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Polyether crude oil demulsifier using straight chain alkyl phenolic resin as initiator and preparation method and application thereof
ActiveCN103396828ASimple preparation processImprove surface activityDewatering/demulsification with chemical meansCarbon numberDemulsifier
The invention discloses a polyether crude oil demulsifier using straight chain alkyl phenolic resin as an initiator and a preparation method and an application thereof. The general formula of the polyether crude oil demulsifier using straight chain alkyl phenolic resin as an initiator is A-(PO)a-(PO)b-(EO)c-(PO) m, wherein PO is -(CH2-O-CH2CH2)-, EO is -(O-CH2CH2)-, A and R are straight chain alkyls with carbon number of 6, n is an integer of 5-13, a+b is equal to m, and in the general formula, the mass of EO accounts for 15-25% of the mass sum of EO and PO. The polyether crude oil demulsifier prepared by the invention is simple in preparation process, good in surface activity, strong in demulsification capability and diffusion capability, good in dehydration effect, excellent in capability of perfecting oil-water interface emulsification performance and strong in universality, and the demulsification and dehydration rate of the crude oil reaches to 80-92%.
Owner:金浦新材料股份有限公司
Reusable carbon-based nano demulsifier and preparation method thereof
ActiveCN110559691AEasy to prepareRapid demulsificationFatty/oily/floating substances removal devicesNature of treatment waterDemulsifierTitanium
The invention discloses a reusable carbon-based nano demulsifier and a preparation method thereof. The preparation method comprises the following steps: carrying out a reaction on carbon nano tubes with a mixed acid solution to obtain oxidized carbon nano tubes with hydroxyl and carboxyl on the surfaces; and grafting nano TiO2 generated by hydrolysis of an organic titanium precursor onto the surfaces of the oxidized carbon nano tubes to obtain the reusable carbon-based nano demulsifier. The invention also discloses the demulsifier obtained by the preparation method. The provided preparation method of the demulsifier is simple, green and environmentally friendly. The demulsifier can be used to quickly demulsify stable oily wastewater at normal temperature, and particularly has a good demulsification effect on oily wastewater with an oil content of 1%; and the water phase is clear and can be recycled.
Owner:YANGTZE UNIVERSITY
Chitosan oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865220AWide variety of sourcesDegradableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainPolythylene glycol
The invention relates to a chitosan oil-in-water type crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereof comprises the following steps: 1) performing alkylation modification on chitosan, to obtain alkylation chitosan; (2) performing carboxyalkylation modification on the alkylation chitosan, to obtain alkylation carboxy alkyl chitosan; (3) performing halogenation modification on a terminal hydroxyl of methoxypolyethylene glycol, to obtain halogenation modified methoxypolyethylene glycol; and 4) enabling the modified methoxypolyethylene glycol to react with the alkylation carboxy alkyl chitosan, to obtain methoxypolyethylene glycol grafted alkylation carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as raw materials, and has the advantages of wide source, nature, non-toxicity, good biocompatibility, degradation and the like.A carboxy group, an group and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series ofthe efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Polyether grafted oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865224AWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentNon toxicitySide chain
The invention relates to a polyether grafted oil-in-water type crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and thepreparation method thereof comprises the following steps: 1) performing aldehydes modification on a terminal hydroxyl of methoxypolyethylene glycol; 2) enabling the modified methoxypolyethylene glycolto react with chitosan, to obtain methoxypolyethylene glycol grafted chitosan; 3) performing alkylation modification on the methoxypolyethylene glycol grafted chitosan; and 4) performing carboxy alkylation modification on methoxypolyethylene glycol grafted alkylation chitosan, to obtain methoxypolyethylene glycol grafted alkylation carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as a raw material, and has the advantages of wide source, nature, non-toxicity, good biocompatibility, degradation and the like. A carboxy alkyl, an alkyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of polyether grafted polysaccharide crude oil demulsifier and preparation method thereof
ActiveCN108865234BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a polyether grafted polysaccharides crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereof comprises the following steps: 1) performing acylation modification on chitosan, to obtain N-acylated chitosan; 2) performing aldehydes modification on a terminal hydroxyl ofmethoxypolyethylene glycol, to obtain aldehyde methoxypolyethylene glycol; 3) enabling the modified methoxypolyethylene glycol to react with N-acylated chitosan, to obtain methoxypolyethylene glycol grafted N-acylated chitosan; 4) performing carboxy alkylation modification on the methoxypolyethylene glycol grafted N-acylated chitosan, to obtain methoxypolyethylene glycol grafted N-acylated carboxyalkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as a raw material, wide in source, natural, non-toxic, good in biocompatibility, and degradable. A carboxy alkyl, an acyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of novel crude oil demulsifier and preparation method thereof
ActiveCN108865233BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a novel crude oil demulsifying agent and a preparation method thereof. A structural general formula of the novel crude oil demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylation chitosan; 2) performing carboxyl alkylation modificationon the N-acylation chitosan to obtain N-acylated carboxyl alkyl chitosan; 3) performing epoxidation modification on methoxypolyethylene glycol terminal hydroxyl to obtain epoxidation methoxypolyethylene glycol; 4) reacting modified methoxypolyethylene glycol with N-acylated carboxyalkyl chitosan to obtain a target product of methoxypolyethylene glycol grafted N-acylated carboxyalkyl chitosan. According to the novel crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compound is utilized as a raw material; the raw material has the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are guided into a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:滨州市立德石油科技有限公司
A kind of chitosan oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865220BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainPolythylene glycol
The invention relates to a chitosan oil-in-water type crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereof comprises the following steps: 1) performing alkylation modification on chitosan, to obtain alkylation chitosan; (2) performing carboxyalkylation modification on the alkylation chitosan, to obtain alkylation carboxy alkyl chitosan; (3) performing halogenation modification on a terminal hydroxyl of methoxypolyethylene glycol, to obtain halogenation modified methoxypolyethylene glycol; and 4) enabling the modified methoxypolyethylene glycol to react with the alkylation carboxy alkyl chitosan, to obtain methoxypolyethylene glycol grafted alkylation carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as raw materials, and has the advantages of wide source, nature, non-toxicity, good biocompatibility, degradation and the like.A carboxy group, an group and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series ofthe efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Modified chitosan type crude oil demulsifier and preparation method thereof
ActiveCN108865229AWide variety of sourcesDegradableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainBiocompatibility Testing
The invention relates to a modified chitosan type crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing epoxidation modification on the terminal hydroxyl of polyethylene glycolmonomethyl ether to obtain epoxidized polyethylene glycol monomethyl ether; 3) enabling the modified polyethylene glycol monomethyl ether to react with the alkylated chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated chitosan; 4) performing carboxyl alkylation modification on the polyethylene glycol monomethyl ether grafted alkylated chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified chitosan type crude oil demulsifier provided by the invention has the advantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsionare obtained by introducing carboxyl alkyl, alkyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of crude oil demulsifier and preparation method thereof
ActiveCN108865223BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a novel high-efficiency crude oil demulsifying agent and a preparation method thereof. A structural general formula of the novel high-efficiency crude oil demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylation chitosan; 2) performing carboxyl alkylation modification on the N-acylation chitosan to obtain N-acylated carboxyl alkyl chitosan; 3) performing isocyanic esterification modification on methoxypolyethylene glycol terminal hydroxyl to obtain isocyanic esterification methoxypolyethylene glycol; 4) reacting modified methoxypolyethylene glycol with N-acylated carboxyl alkyl chitosan to obtain a target product of methoxypolyethylene glycol grafted N-acylated carboxyl alkyl chitosan. According to the novel high-efficiency crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compound is utilizedas a raw material; the raw material has the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are guided into a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of crude oil demulsifier and preparation method thereof
ActiveCN108913201BWide variety of sourcesDegradableDewatering/demulsification with chemical meansPolymer scienceSide chain
The invention relates to a crude oil demulsifying agent and a preparation method thereof. The structural general formula of the crude oil demulsifying agent is as shown in a formula I and the preparation method of the crude oil demulsifying agent comprises the following steps: 1) carrying out acylation modification on chitosan to obtain N-acylated chitosan; 2) carrying out carboxyalkylation modification on the N-acylated chitosan to obtain N-acylated carboxyalkyl chitosan; 3) carrying out halogenation modification on terminal hydroxyl groups of methoxypolyethylene glycol to obtain halogenatedmethoxypolyethylene glycol; and 4) allowing the modified methoxypolyethylene glycol to react with the N-acylated carboxyalkyl chitosan, so as to obtain a target product methoxypolyethylene glycol grafted N-acylated carboxyalkyl chitosan. The chitosan natural polymer compound is used as a raw material and the crude oil demulsifying agent has a wide source and is natural, non-toxic, good in biocompatibility, degradable and the like. A carboxyalkyl group, an acyl group and a polyether side chain are introduced into the chitosan molecular chain, the position and the degree of substitution of the substituent groups are controlled to obtain a series of high-efficiency demulsifying agents suitable for oil-in-water(O / W) emulsion.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of modified chitosan crude oil demulsifier and preparation method thereof
ActiveCN108865235BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a modified chitosan type crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylated chitosan; 2) performing carboxyl alkylation on the N-acylated chitosan to obtain modified N-acylated carboxyl alkyl chitosan; 3) performing p-nitrobenzene esterification modification on the terminal hydroxyl of polyethylene glycol monomethyl ether to obtain p-nitrobenzene esterified polyethyleneglycol monomethyl ether; 4) enabling the modified polyethylene glycol monomethyl ether to react with the N-acylated carboxyl alkyl chitosan to obtain a target product polyethylene glycol monomethyl ether grafted N-acylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified chitosan type crude oil demulsifier provided by the invention has theadvantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsion are obtained by introducing carboxyl alkyl, acyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Polyether grafted polysaccharides crude oil demulsifier and preparation method thereof
ActiveCN108865234AWide variety of sourcesSafe to useDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainBiocompatibility Testing
The invention relates to a polyether grafted polysaccharides crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereof comprises the following steps: 1) performing acylation modification on chitosan, to obtain N-acylated chitosan; 2) performing aldehydes modification on a terminal hydroxyl ofmethoxypolyethylene glycol, to obtain aldehyde methoxypolyethylene glycol; 3) enabling the modified methoxypolyethylene glycol to react with N-acylated chitosan, to obtain methoxypolyethylene glycol grafted N-acylated chitosan; 4) performing carboxy alkylation modification on the methoxypolyethylene glycol grafted N-acylated chitosan, to obtain methoxypolyethylene glycol grafted N-acylated carboxyalkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as a raw material, wide in source, natural, non-toxic, good in biocompatibility, and degradable. A carboxy alkyl, an acyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Novel crude oil demulsifying agent and preparation method thereof
ActiveCN108865233AWide variety of sourcesDegradableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainBiocompatibility Testing
The invention relates to a novel crude oil demulsifying agent and a preparation method thereof. A structural general formula of the novel crude oil demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylation chitosan; 2) performing carboxyl alkylation modificationon the N-acylation chitosan to obtain N-acylated carboxyl alkyl chitosan; 3) performing epoxidation modification on methoxypolyethylene glycol terminal hydroxyl to obtain epoxidation methoxypolyethylene glycol; 4) reacting modified methoxypolyethylene glycol with N-acylated carboxyalkyl chitosan to obtain a target product of methoxypolyethylene glycol grafted N-acylated carboxyalkyl chitosan. According to the novel crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compound is utilized as a raw material; the raw material has the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are guided into a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:滨州市立德石油科技有限公司
A kind of chitosan comb polymer crude oil demulsifier and preparation method thereof
ActiveCN108865227BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainPolythylene glycol
The invention relates to a chitosan comb-shaped polymer crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereof comprises the following steps: 1) performing acylation modification on chitosan, to obtain N-acylated chitosan; 2) performing carboxy alkylation modification on the N-acylated chitosan, to obtain N-acylated carboxy alkyl chitosan; 3) performing acrylic acid esterification modification on a terminal hydroxyl of methoxypolyethylene glycol, to obtain acrylic acid esterification methoxypolyethylene glycol; and 4) enabling the modified methoxypolyethylene glycol to react with the N-acylated carboxy alkyl chitosan, to obtain a target product of methoxypolyethylene glycol graftedN-acylated carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as raw materials, and has the advantages of wide source, nature, non-toxicity, good biocompatibility, degradation and the like. A carboxy alkyl, an acyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of modified chitosan crude oil demulsifier and preparation method thereof
ActiveCN108865229BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a modified chitosan type crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing epoxidation modification on the terminal hydroxyl of polyethylene glycolmonomethyl ether to obtain epoxidized polyethylene glycol monomethyl ether; 3) enabling the modified polyethylene glycol monomethyl ether to react with the alkylated chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated chitosan; 4) performing carboxyl alkylation modification on the polyethylene glycol monomethyl ether grafted alkylated chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified chitosan type crude oil demulsifier provided by the invention has the advantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsionare obtained by introducing carboxyl alkyl, alkyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of polyethylene glycol monomethyl ether grafted alkylated carboxyalkyl chitosan crude oil demulsifier and its preparation method
ActiveCN108998074BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentDemulsifierPolymer science
The invention relates to a polyethylene glycol monomethyl ether grafted alkylated carboxyalkyl chitosan type crude oil demulsifier and a preparation method thereof. The structure general formula of the demulsifier is as shown in the formula I, and the preparation method of the demulsifier comprises the followings: (1) chitosan is subjected to alkylation modification, so as to obtain alkylated chitosan; (2) the alkylated chitosan is subjected to carboxyalkylation modification, so as to obtain alkylated carboxyalkyl chitosan; (3) terminal hydroxyl of polyethylene glycol monomethyl ether is subjected to esterification modification, so as to obtain esterified polyethylene glycol monomethyl ether; and (4) the modified polyethylene glycol monomethyl ether and the alkylated carboxyalkyl chitosanare in reaction so as to obtain the polyethylene glycol monomethyl ether grafted alkylated carboxyalkyl chitosan. The chitosan type natural high-molecular compounds are used as raw materials, therefore, the crude oil demulsifier has the advantages of wide raw material sources, being natural, non-toxicity, good biocompatibility and being degradable. Carboxyalkyl, alkyl and polyether side chains areintroduced to chitosan molecular chains, and by controlling the positions and degree of substitution of the substituents, a series of efficient demulsifiers suitable for O / W type emulsion can be obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of polyethylene glycol monomethyl ether grafted n-acylated carboxyalkyl chitosan crude oil demulsifier and preparation method thereof
ActiveCN108998075BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a polyethylene glycol monomethyl ether grafted N-acylated carboxyalkyl chitosan type crude oil demulsifier and a preparation method thereof. The structure general formula of the crude oil demulsifier is as shown in the formula I, and the preparation method of the crude oil demulsifier is as follows: (1) chitosan is subjected to acylation modification, so as to obtain N-acylated chitosan; (2) the N-acylated chitosan is subjected to carboxyalkylation modification, so as to obtain N-acylated carboxyalkyl chitosan; (3) terminal hydroxyl of polyethylene glycol monomethyl ether is subjected to esterification modification, so as to obtain esterified polyethylene glycol monomethyl ether; and (4) the modified polyethylene glycol monomethyl ether and the N-acylated carboxyalkyl chitosan react, so as to obtain the polyethylene glycol monomethyl ether grafted N-acylated carboxyalkyl chitosan. The chitosan type natural high-molecular compounds are used as raw materials, therefore, the crude oil demulsifier has the advantages of wide raw material sources, being natural, non-toxicity, good biocompatibility and being degradable. Carboxyalkyl, acyl and polyether side chainsare introduced to chitosan molecular chains, and by controlling the positions and degree of substitution of the substituents, a series of efficient demulsifiers suitable for O / W type emulsion can beobtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of polyether grafted oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865224BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainPolythylene glycol
The invention relates to a polyether grafted oil-in-water type crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and thepreparation method thereof comprises the following steps: 1) performing aldehydes modification on a terminal hydroxyl of methoxypolyethylene glycol; 2) enabling the modified methoxypolyethylene glycolto react with chitosan, to obtain methoxypolyethylene glycol grafted chitosan; 3) performing alkylation modification on the methoxypolyethylene glycol grafted chitosan; and 4) performing carboxy alkylation modification on methoxypolyethylene glycol grafted alkylation chitosan, to obtain methoxypolyethylene glycol grafted alkylation carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as a raw material, and has the advantages of wide source, nature, non-toxicity, good biocompatibility, degradation and the like. A carboxy alkyl, an alkyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of multi-branched crude oil demulsifier and preparation method thereof
ActiveCN108865222BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a multi-branched type crude oil demulsifier and a preparation method thereof. The structural general formula of the multi-branched type crude oil demulsifier is shown by formula I; the preparation method comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylated chitosan; 2) performing carboxyl alkylation on the N-acylated chitosanto obtain modified N-acylated carboxyl alkyl chitosan; 3) performing amination modification on the terminal hydroxyl of polyethylene glycol monomethyl ether to obtain aminated polyethylene glycol monomethyl ether; 4) enabling the modified polyethylene glycol monomethyl ether to react with the N-acylated carboxyl alkyl chitosan to obtain a target product polyethylene glycol monomethyl ether grafted N-acylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the multi-branched type crude oil demulsifier provided by the invention has the advantagesof wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsion are obtained by introducing carboxyl alkyl, acyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN HYPERBRANCHED POLYMER RESINS SCI& TECH CO LTD
Chitosan crude oil demulsifier and preparation method thereof
ActiveCN108865225AWide variety of sourcesSafe to useDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainChemistry
The invention relates to a chitosan crude oil demulsifier and a preparation method thereof. A structure general formula of the demulsifier is as shown in formula I, and the preparation method thereofcomprises the following steps: 1) performing acylation modification on chitosan, to obtain N-acylated chitosan; 2) performing epoxidation modification on a terminal hydroxyl of methoxypolyethylene glycol, to obtain epoxidation methoxypolyethylene glycol; 3) enabling the modified methoxypolyethylene glycol to react with N-acylated chitosan, to obtain methoxypolyethylene glycol grafted N-acylated chitosan; and 4) performing carboxy alkylation modification on the methoxypolyethylene glycol grafted N-acylated chitosan, to obtain a target product of methoxypolyethylene glycol grafted N-acylated carboxy alkyl chitosan. The demulsifier is capable of using chitosan natural macromolecular compounds as raw materials, and has the advantages of wide source, nature, non-toxicity, good biocompatibility,degradation and the like. A carboxy alkyl, an acyl and a polyether side chain are introduced into a chitosan molecular chain, and through controlling a position and a substitution degree of each substituent group, a series of the efficient demulsifiers suitable for oil-in-water (O / W) emulsion is obtained.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of modified crude oil demulsifier and preparation method thereof
ActiveCN108865228BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a modified crude oil demulsifier and a preparation method thereof. The general structural formula of the demulsifier is shown in formula I, and its preparation method is as follows: 1) carry out epoxidation modification to polyethylene glycol monomethyl ether terminal hydroxyl; 2) modify polyethylene glycol monomethyl ether and Chitosan is reacted to obtain polyethylene glycol monomethyl ether grafted chitosan; 3) the polyethylene glycol monomethyl ether grafted chitosan is modified by alkylation to obtain polyethylene glycol monomethyl ether grafted 4) carry out carboxyalkylation modification to the alkylated chitosan grafted with polyethylene glycol monomethyl ether to obtain alkylated carboxylated chitosan grafted with polyethylene glycol monomethyl ether Alkyl chitosan. The invention uses chitosan natural macromolecular compounds as raw materials, and has the advantages of wide source, natural, non-toxic, good biocompatibility, degradability and the like. By introducing carboxyalkyl groups, alkyl groups and polyether side chains into the molecular chain of chitosan, by controlling the position and degree of substitution of each substituent, a series of high-efficiency breaking agents suitable for oil-in-water (O / W) emulsions can be obtained. emulsion.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of comb-shaped polymer oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865221BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to a comb-shaped polymer oil-in-water type crude oil demulsifying agent and a preparation method thereof. A structural general formula of the demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing carboxyalkylationmodification on the alkylated chitosan to obtain alkylated carboxyl alkyl chitosan; 3) performing acrylic esterification modification on methoxypolyethylene glycol terminal hydroxyl to obtain acrylated methoxypolyethylene glycol; 4) enabling modified methoxypolyethylene glycol to react with alkylated carboxyl alkyl chitosan to obtain methoxypolyethylene glycol grafted alkylated carboxyl alkyl chitosan. According to the comb-shaped polymer oil-in-water type crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compounds are utilized as raw materials; the raw materials have the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are introduced to a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Comb-shaped polymer oil-in-water type crude oil demulsifying agent and preparation method thereof
ActiveCN108865221AWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentAlkyl transferSide chain
The invention relates to a comb-shaped polymer oil-in-water type crude oil demulsifying agent and a preparation method thereof. A structural general formula of the demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing carboxyalkylationmodification on the alkylated chitosan to obtain alkylated carboxyl alkyl chitosan; 3) performing acrylic esterification modification on methoxypolyethylene glycol terminal hydroxyl to obtain acrylated methoxypolyethylene glycol; 4) enabling modified methoxypolyethylene glycol to react with alkylated carboxyl alkyl chitosan to obtain methoxypolyethylene glycol grafted alkylated carboxyl alkyl chitosan. According to the comb-shaped polymer oil-in-water type crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compounds are utilized as raw materials; the raw materials have the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are introduced to a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of chitosan crude oil demulsifier and preparation method thereof
ActiveCN108865225BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of reusable carbon-based nano demulsifier and preparation method thereof
ActiveCN110559691BEasy to prepareRapid demulsificationFatty/oily/floating substances removal devicesNature of treatment waterDemulsifierCarbon oxide
The invention discloses a reusable carbon-based nano demulsifier and a preparation method thereof. The preparation method includes: reacting carbon nanotubes with a mixed acid solution to obtain oxidized carbon nanotubes containing hydroxyl and carboxyl groups on the surface; hydrolyzing an organic titanium precursor to produce nano-TiO 2 Grafted onto the surface of oxidized carbon nanotubes to obtain a reusable carbon-based nanodemulsifier. The invention also discloses the demulsifier obtained by the above preparation method. The preparation method of the demulsifier provided by the invention is simple and environmentally friendly. The demulsifier can quickly demulsify stable oily wastewater under normal temperature conditions, especially for oily wastewater with an oil content of 1%, and has a good demulsification effect. The phase is clear and can be recycled for reuse.
Owner:XINJIANG TARIM OILFIELD CONSTR ENG
A kind of oil-in-water type crude oil demulsifier and preparation method thereof
ActiveCN108865226BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentPolymer scienceSide chain
The invention relates to an oil-in-water type crude oil demulsifying agent and a preparation method thereof. A structural general formula of the demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing carboxyl alkylation modification on the alkylated chitosan to obtain alkylated carboxyl alkyl chitosan; 3) performing amination modification on methoxypolyethylene glycol terminal hydroxyl to obtain aminomethoxypolyethylene glycol; 4) enabling modified methoxypolyethylene glycol to react with alkylated carboxyl alkyl chitosan to obtain a target product of methoxypolyethylene glycol grafted alkylation carboxyl alkyl chitosan. According to the oil-in-water type crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compounds are utilized as raw materials; the raw materials have the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are guided into a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Modified chitosan type crude oil demulsifier and preparation method thereof
ActiveCN108865235AWide variety of sourcesSafe to useDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainNatural property
The invention relates to a modified chitosan type crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing acylation modification on chitosan to obtain N-acylated chitosan; 2) performing carboxyl alkylation on the N-acylated chitosan to obtain modified N-acylated carboxyl alkyl chitosan; 3) performing p-nitrobenzene esterification modification on the terminal hydroxyl of polyethylene glycol monomethyl ether to obtain p-nitrobenzene esterified polyethyleneglycol monomethyl ether; 4) enabling the modified polyethylene glycol monomethyl ether to react with the N-acylated carboxyl alkyl chitosan to obtain a target product polyethylene glycol monomethyl ether grafted N-acylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified chitosan type crude oil demulsifier provided by the invention has theadvantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsion are obtained by introducing carboxyl alkyl, acyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Modified crude oil demulsifier and preparation method thereof
ActiveCN108865228AWide variety of sourcesDegradableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainBiocompatibility Testing
The invention relates to a modified crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing epoxidation modification on the terminal hydroxyl of polyethylene glycol monomethyl ether; 2) enabling the modified polyethylene glycol monomethyl ether to react withchitosan to obtain polyethylene glycol monomethyl ether grafted chitosan; 3) performing alkylation modification on the polyethylene glycol monomethyl ether grafted chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated chitosan; 4) performing carboxyl alkylation modification on the polyethylene glycol monomethyl ether grafted alkylated chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified crude oil demulsifier provided by the invention has the advantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsion are obtained byintroducing carboxyl alkyl, alkyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Oil-in-water type crude oil demulsifying agent and preparation method thereof
ActiveCN108865226AWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentSide chainBiocompatibility Testing
The invention relates to an oil-in-water type crude oil demulsifying agent and a preparation method thereof. A structural general formula of the demulsifying agent is shown as a formula I. The preparation method of the demulsifying agent comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing carboxyl alkylation modification on the alkylated chitosan to obtain alkylated carboxyl alkyl chitosan; 3) performing amination modification on methoxypolyethylene glycol terminal hydroxyl to obtain aminomethoxypolyethylene glycol; 4) enabling modified methoxypolyethylene glycol to react with alkylated carboxyl alkyl chitosan to obtain a target product of methoxypolyethylene glycol grafted alkylation carboxyl alkyl chitosan. According to the oil-in-water type crude oil demulsifying agent disclosed by the invention, chitosan natural polymer compounds are utilized as raw materials; the raw materials have the advantages of wide sources, natural performance, no toxin, good biocompatibility, degradation and the like; carboxyalkyl, alkyl and a polyether side chain are guided into a molecular chain of the chitosan; by means of controlling positions and substitution degrees of all substituent groups, a series of high-efficiency demulsifying agents suitable for oil-in-water (O / W) type emulsion can be prepared.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
A kind of modified crude oil demulsifier and preparation method thereof
ActiveCN108865231BWide variety of sourcesSustainableDewatering/demulsification with chemical meansHydrocarbon oils treatmentDemulsifierPolymer science
The invention relates to a modified crude oil demulsifier and a preparation method thereof. The structural general formula of the demulsifier is shown as formula I; the preparation method comprises the following steps: 1) performing alkylation modification on chitosan to obtain alkylated chitosan; 2) performing carboxyl alkylation modification on the alkylated chitosan to obtain alkylated carboxylalkyl chitosan; 3) performing epoxidation modification on polyethylene glycol monomethyl ether to obtain epoxidation modified polyethylene glycol monomethyl ether; 4) enabling the modified polyethylene glycol monomethyl ether to react with the alkylated carboxyl alkyl chitosan to obtain polyethylene glycol monomethyl ether grafted alkylated carboxyl alkyl chitosan. With chitosan type natural high-molecular compounds as raw materials, the modified crude oil demulsifier provided by the invention has the advantages of wide source, natural property, no toxicity, high biocompatibility, degradability and the like. A series of efficient demulsifiers suitable for oil-in-water (O / W) type emulsion are obtained by introducing carboxyl alkyl, alkyl and polyether side chain to a chitosan molecular chain and controlling the position and substitution degree of each substituent.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
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