47results about How to "Easy to break emulsion" patented technology

The invention relates to a preparation method of a water-soluble anion polymer-type thickened oil viscosity reducer. The thickened oil viscosity reducer comprises a component A and a component B; thecomponent A is an acrylamide copolymer containing acryloyl morpholine blocks; the component B is an acrylamide copolymer containing active end groups. A thickened oil viscosity reducer solution is mixed with thickened oil; it is proved through viscosity reduction tests that when the dosage reaches 0.2 mg / mL, the viscosity reducer can achieve high-temperature stirred emulsification and viscosity reduction in pure water and salt water, the viscosity reduction rate is greater than 93%, and stirred demulsification is stopped at room temperature. The thickened oil emulsification viscosity reducer is obvious in viscosity reduction effect and high in environmental adaptability, the emulsification and viscosity reduction behaviors of the thickened oil viscosity reducer have temperature and shearing responsiveness, and convenience is provided for application and post-treatment in oil fields.

A preparation method of a powdered acrylonitrile-butadiene rubber with high performance comprises steps of: dispersing of carbon nanotubes: adding carbon nanotubes and water in a high-speed disperser, and stirring to evenly disperse the carbon nanotubes; preparation of a rapid polymerization latex: adding water, acrylonitrile and an emulsifier into a polymerization kettle, after confirmation of no leakage, adding butadiene, a crosslinking agent, an initiator and a molecular weight regulator for polymerization; and when the conversion rate reaches a certain level, adding a terminator to obtain a fast polymerization acrylonitrile-butadiene latex; and condensation into a powder: adding the acrylonitrile-butadiene latex, water, carbon nanotubes, a separant, a flocculant and a coagulant into a coagulation tank; curing, washing, dehydrating and drying to obtain the powdered acrylonitrile-butadiene rubber. The prepared acrylonitrile-butadiene rubber slurry has the following properties: pH of 7-10, Mooney viscosity of ML (1+4) 100 DEG C 60-110, structure gel of 75%-85%, and acrylonitrile-butadiene rubber mechanical stability of less than 1.0%; and the powdered acrylonitrile-butadiene rubber has the following properties: powder particle size of 0.6-1.0 mm, acrylonitrile content of 40%-55%, ash content no more than 1.0, volatile matter no more than 1.0, and powdered ratio no less than 95%.

A special lubricating liquid for rolling copper and copper alloy is prepared from 32# universal engine oil, 7# universal engine oil, petroleum sulfosodium, emulsifier and white oil. The deionized water is added some time according to rolling condition. The process for preparing the lubricating liquid includes mixing, agitating or diluting and heating in circulation node with heating temp of 30-50 deg.C.

Disclosed herein are processes for obtaining a microbial oil comprising one or more polyunsaturated fatty acids (PUFAs) from one or more microbial cells by lysing the cells to form a lysed cell composition and then recovering the oil from the lysed cell composition. Further disclosed herein is microbial oil comprising one or more PUFAs that is recovered from microbial cells by at least one process described herein.

The present invention describes soap-free emulsion polymerization process to prepare fluorous emulsion. The fluorous emulsion is prepared with trifluorochloroethylene as main component and through the ternary copolymerization of three kinds of monomer including trifluorochloroethylene, alphatic olefine ester and alphatic olefine acid; and has homogeneous grains and high storage stability. The copolymerization is completed in a high pressure reactor with water, monomers and initiator, at 65-75 deg.c and 0.7-2.5 MPa condition for 20-45 hr. The fluorous emulsion has solid content of 21-35 %, and polymer number average molecular weight of 7000-9500, and may be stored stably for over 6 months without lamination and gelatinizing.

The invention discloses an absorbent for removing non-methane hydrocarbons and a preparation method of the absorbent. The absorbent is prepared from raw materials in percentage by mass as follows: 1.8% of Span 80, 7.2% of Tween 80, 3% of n-butyl alcohol, 1% of glycerin, 20% of biodiesel and 67% of water. The preparation method of the absorbent comprises steps as follows: the raw materials in percentage by mass are weighed; a surfactant, n-butyl alcohol, the glycerin, the biodiesel and the water are sequentially added while stirring. The absorbent has the benefits as follows: the cost for removing the non-methane hydrocarbons is low, thorough up-to-standard emission can be guaranteed on the basis that the treatment ratio is 70% or above, equipment is not corroded, and potential safety hazards are eliminated.

Disclosed herein are processes for obtaining a microbial oil comprising one or more polyunsaturated fatty acids (PU-FAs) from one or more microbial cells by lysing the cells to form a lysed cell composition and then recovering the oil from the lysed cell composition. Further disclosed herein is microbial oil comprising one or more PUFAs that is recovered from microbial cells by at least one process described herein.

The invention relates to auxiliary agent for exploiting thick oil with formula as: 10-15% amphoteric surfactant, 5-10% polyvinyl polyamine block polyether, 12-15% phenolic resin block polyether, 5-10% low-molecular alcohol polyether, 5-8% penetrant, 5-10% lignin sodium, and 32-58% water. This product can reduce viscosity thousand times to replace high-pressure steaming exploit and save cost.

The present invention discloses a method comprises the following steps: synthesizing a nano-emulsion oil-displacing agent through a one-step method, preparing a nano-emulsion oil-displacing agent dispersion liquid by using injected water, pumping the nano-emulsion oil-displacing agent dispersion liquid into a stratum, enabling the nano-emulsion oil-displacing agent to be spontaneously enriched onan oil-water interface, and performing directional adsorption on the oil-water interface under the induction of stratum shearing to form Pickering emulsion, and under the condition of reservoirs withwater, the emulsion viscosity is in direct proportion to the stratum water saturation and is in inverse proportion to the stratum oil saturation, so that the oil-water interface fluidity is automatically adjusted, the displacement leading edge is stabilized, and the crude oil recovery rate is increased. The nano-emulsion oil-displacing agent can also be compounded with a surfactant for use, and the crude oil recovery ratio is increased through the cooperation of in-situ emulsification tackifying and ultralow interfacial tension oil washing. The method has the advantages of reliable principle,cheap and easily available raw materials, outstanding economic benefit and wide industrial application prospect.

Disclosed herein are processes for obtaining a microbial oil comprising one or more polyunsaturated fatty acids (PU-FAs) from one or more microbial cells by lysing the cells to form a lysed cell composition and then recovering the oil from the lysed cell composition. Further disclosed herein is microbial oil comprising one or more PUFAs that is recovered from microbial cells by at least one process described herein.

Disclosed herein are processes for obtaining a microbial oil comprising one or more polyunsaturated fatty acids (PUFAs) from one or more microbial cells by lysing the cells to form a lysed cell composition and then recovering the oil from the lysed cell composition. Further disclosed herein is microbial oil comprising one or more PUFAs that is recovered from microbial cells by at least one process described herein.

The invention discloses a method for treating thickened oil oil-in-water type emulsion through magnetic nano particles and microwaves, which belongs to the technical field of oil-water separation engineering. By means of the coupling synergistic effect of the magnetic nanoparticles and the microwave high-frequency electromagnetic field, the demulsification rate and demulsification efficiency are greatly improved, and the water diversion rate of a high-stability thick oil O / W type emulsion can exceed 99% in a short time. The problems that a traditional chemical demulsifier is large in dosage and limited in application range, so that a catalyst is poisoned, flocculate generated after demulsification stays in a water phase or an oil phase all the time, and secondary pollution is caused to theenvironment are solved. Besides, the magnetic nanoparticles can be repeatedly recycled for multiple times, the demulsification cost is reduced to a great extent, the demulsified magnetic nanoparticles can be adsorbed and recycled again under the action of an external magnetic field, environmental pollution is avoided, and the magnetic nanoparticles have good application prospects.

The invention discloses a method for temporarily plugging diversion fracturing by using a salinity response type emulsion. The method comprises the following steps of 1, preparing the salinity response type emulsion; 2, injecting the salinity response type emulsion to plug old cracks or high-permeability layers; 3, aging the salinity response type emulsion and initiating phase inversion to form plugging; and 4, injecting a fracturing fluid for the diversion fracturing to form new cracks. A salinity response type emulsion-based diverting agent has the advantages of simple preparation, high plugging performance and small formation damage, and solves the problems of low plugging strength, complex use process, difficult gel breaking or degradation, low flowback rate and large formation damage of an existing diverting agent; and the diverting agent can effectively plug the original cracks, and then the new cracks have a certain angle with respect to the original cracks are formed after the diversion fracturing, so that more oil gas seepage channels are formed, the oil drainage area is expanded, the crude oil recovery rate and economic benefits are greatly improved, and the diverting agent is convenient to popularize and use.

The invention discloses a sewage air flotation treatment device, which comprises a cylinder, a dissolved air flotation device and an ultrasonic generator; the cylinder comprises a sewage chamber, an air flotation treatment chamber, an ultrasonic demulsification chamber and Clear water overflow chamber; the top of the sewage chamber is provided with a sewage water inlet, and a first partition perpendicular to the bottom of the cylinder is provided between the sewage chamber and the air flotation treatment chamber; the top of the air flotation treatment chamber is provided with A slag scraping mechanism, the slag scraping mechanism includes a sprocket, a chain and a scraper vertically arranged on the chain, a second partition perpendicular to the bottom of the cylinder is provided between the air flotation treatment chamber and the ultrasonic demulsification chamber, The side of the second partition located in the air flotation treatment chamber is provided with a slag discharge tank corresponding to the slag scraping mechanism; chamber, and an oil suction pump is arranged in the oil collection chamber.

A Yarrowia lipolytica (GMCC No.0692) and its application in refining petroleum are disclosed. Said application process includes such steps as slant culturing at 25-30 deg.C, shake culturing, fermenting respectively and sequentially in stage-one and stage-three seeding tanks for 10-18 hr, mixing with raw oil, water and culture medium, fermenting in production tank for 30-100 hr, heating and emulsifying. Its advantages are high activity, dewaxing efficiency and productivity, easy demulsifying, and high quality of oil product.

A Candida maltosa (CGMCC No.0693) and its application in refining petroleum are disclosed. Said application process includes such steps as slant culturing at 25-30 deg.C shake culturing, sequentially fermenting in stage-one and stage-three seeding tanks for 10-18 hr, mixing with raw oil, water and culture medium, fermenting in production tank for 30-100 hr, heating and demulsifying. Its advantages are high activity, dewaxing efficiency and productivity, easy demulsifying and high quality of oil product.

The invention provides a method for extracting lignin in papermaking black liquor by magnetic emulsion liquid-membrane separation. The method comprises the following steps: taking oleic acid cladded ferriferrous oxide (Fe3O4) nano solid particles as a stabilizer and mixing an organic solvent and a carrier to form an oil membrane; dispersing the particle stabilizer into the oil membrane to form anoil phase; then shearing and emulsifying the oil phase and a water phase to obtain needed stable water-in-oil type emulsion; adding the stable water-in-oil type emulsion into supernatant of the blackliquor and stirring to form water-in-oil-in-water composite emulsion; under the action of a pushing force of concentration difference, enriching the lignin into the water phase through the carrier; after finishing extraction, demulsifying to recycle an emulsifier and the oil membrane for recycling. The method provided by the invention is simple in steps, convenient to operate and strong in practicability.

The invention discloses a water-soluble hyperbranched polymer heavy oil viscosity reducer and a preparation method thereof. The viscosity reducer is composed of 0.1%-0.5% functionalized skeleton monomer, 10%-20% acrylamide, 35%- 45% modified non-ionic polyoxyethylene ether and 40% to 50% anionic monomer olefin sulfonate are formed by free radical polymerization in an aqueous solution at 45°C to 60°C. This polymer thick oil viscosity reducer can be quickly dissolved in water, has strong temperature resistance and salt resistance, and has good emulsification performance when mixed with crude oil. The emulsification viscosity reduction rate of medium and low viscosity heavy oil is over 85%, and the emulsion is easy to break. . At the same time, the raw materials for the preparation of the polymer heavy oil viscosity reducer come from a wide range of sources, and the preparation process of the viscosity reducer is simple.

The invention discloses a device and method for demulsifying water-in-oil type emulsion. The device comprises an injection pump A, an injection pump B, an intermediate container A, an intermediate container B, an intermediate water container, an intermediate oil container, a high-pressure demulsifying reaction kettle, a rock core clamping device and a collection container, wherein the intermediatewater container and the intermediate oil container are arranged in parallel, and two ends of the intermediate water container and the intermediate oil container communicate with the injection pump Band the rock core clamping device respectively; two connectors are arranged at the top of the high-pressure demulsifying reaction kettle; one connector communicates with the rock core clamping deviceand the other connector communicates with the intermediate container A and the intermediate container B; a collection opening is formed in a side face of the high-pressure demulsifying reaction kettle; the collection opening communicates with the collection container; and the intermediate container A communicates with the injection pump A. According to the device disclosed by the invention, the volumes of an oil phase and a water phase in a physical simulation experiment process can be collected at the same time and the volumes of the produced oil phase and water phase can be accurately metered in real time, so that the accuracy of calculating the oil displacement efficiency and the moisture content of produced liquid is ensured, and the precision of experiments is further improved.

The present invention describes soap-free emulsion polymerization process to prepare fluorous emulsion. The fluorous emulsion is prepared with trifluorochloroethylene as main component and through the ternary copolymerization of three kinds of monomer including trifluorochloroethylene, alphatic olefine ester and alphatic olefine acid; and has homogeneous grains and high storage stability. The copolymerization is completed in a high pressure reactor with water, monomers and initiator, at 65-75 deg.c and 0.7-2.5 MPa condition for 20-45 hr. The fluorous emulsion has solid content of 21-35 %, and polymer number average molecular weight of 7000-9500, and may be stored stably for over 6 months without lamination and gelatinizing.

Disclosed are processes for obtaining a microbial oil comprising one or more polyunsaturated fatty acids (PUFAs) from one or more microbial cells by lysing the cells to form a lysed cell composition and then recovering the oil from the lysed cell composition. Further disclosed is microbial oil comprising one or more PUFAs that is recovered from microbial cells by at least one process described.

The invention belongs to the technical field of oil field wastewater treatment, and particularly relates to a cationic type degreaser for polymer flooding produced water treatment. The degreaser is characterized in that n-capric aldehyde reacts with epoxy bromobutane under catalysis of a boron trifluoride diethyl etherate solution to generate a midbody, and then the midbody reacts with quinoline to generate the cationic type degreaser. The molar ratio of the n-capric aldehyde to the epoxy bromobutane to the quinoline is 1:(0.75-1.5):(0.6-1.2), the preferential molar ratio is 1:1.25:0.80. The degreaser has the beneficial effects of being simple in preparing process, low in cost, high in adaptability and good in degreasing effect, and the degreasing rate is higher than 97%. The cationic type degreaser can be widely applied to an oil field polymer flooding produced water degreasing process.

The invention discloses a device and method for demulsification of water-in-oil emulsion, which comprises an injection pump A, an injection pump B, an intermediate container A, an intermediate container B, an intermediate water container, an intermediate oil container, a high-pressure demulsification reaction kettle, A core holder and a collection container; the intermediate water container and the intermediate oil container are arranged in parallel, and the two ends are respectively communicated with the injection pump B and the core holder; the top of the high-pressure demulsification reactor is provided with two interfaces, one The interface is connected with the core holder, and the other interface is connected with the intermediate container A and the intermediate container B. The side of the high-pressure demulsification reactor is provided with a collection port, and the collection port is connected with the collection container; the intermediate container A is connected with the injection Pump A is connected. The present invention can simultaneously collect the volumes of the oil phase and the water phase during the physical simulation experiment, and accurately measure the volumes of the produced oil and water phases in real time, thereby ensuring the accuracy of the calculation of the oil displacement efficiency and the water content of the produced fluid , further improving the accuracy of the experiment.

A Trichosporon sp. (CGMCC No.0694) and its application in refining petroleum are disclosed. Said application process includes such steps as slant culturing at 25-30 deg.C, shake culturing, sequentially fermenting in stage-one and stage-three seeding tanks for 10-18 hr, mixing with raw oil, water and culture medium, fermenting in production tank for 30-100 hr, heating and demulsifying. Its advantages are high activity, dewaxing efficiency and productivity, easy demulsifying, and high quality of oil product.

A Candida maltosa (CGMCC No.0693) and its application in refining petroleum are disclosed. Said application process includes such steps as slant culturing at 25-30 deg.C shake culturing, sequentially fermenting in stage-one and stage-three seeding tanks for 10-18 hr, mixing with raw oil, water and culture medium, fermenting in production tank for 30-100 hr, heating and demulsifying. Its advantages are high activity, dewaxing efficiency and productivity, easy demulsifying and high quality of oil product.

The invention belongs to the technical field of oil field wastewater treatment, and specifically relates to a degreasing agent of polymer flooding effluent and a preparation method thereof. The degreasing agent is prepared by reacting n-capric aldehyde with epoxy bromobutane under the catalysis of a boron trifluoride diethyl etherate solution to generate an intermediate, and then reacting with pyrrolidone to generate the cationic type degreasing agent. The molar ratio of n-capric aldehyde, epoxy bromobutane to pyrrolidone is 1.0: (0.5 to 1.25): (0.5 to 1.5), preferably 1.0: 1.0: 1.1. The degreasing agent disclosed by the invention has the characteristics of simple preparation technology, low cost, high adaptability and good degreasing effect, and the degreasing reaches up to more than 97%. Therefore, the degreasing agent can be widely applied to a degreasing technology of oil field polymer flooding effluent.

The invention relates to a preparation method of a water-soluble anion polymer-type thickened oil viscosity reducer. The thickened oil viscosity reducer comprises a component A and a component B; thecomponent A is an acrylamide copolymer containing acryloyl morpholine blocks; the component B is an acrylamide copolymer containing active end groups. A thickened oil viscosity reducer solution is mixed with thickened oil; it is proved through viscosity reduction tests that when the dosage reaches 0.2 mg / mL, the viscosity reducer can achieve high-temperature stirred emulsification and viscosity reduction in pure water and salt water, the viscosity reduction rate is greater than 93%, and stirred demulsification is stopped at room temperature. The thickened oil emulsification viscosity reducer is obvious in viscosity reduction effect and high in environmental adaptability, the emulsification and viscosity reduction behaviors of the thickened oil viscosity reducer have temperature and shearing responsiveness, and convenience is provided for application and post-treatment in oil fields.

The invention relates to a composite foaming agent. The composite foaming agent is prepared from an anionic oligomeric surfactant, an organic foam stabilizer and water. The nionic oligomeric surfactant is of a structure shown in the formula (I), wherein n is any integer from 1 to 6, R is alkyl, and M is at least one of Li+, Na+ and K+. The invention also relates to application of the composite foaming agent to carbon dioxide oil driving. The composite foaming agent is low in using amount and good in thickening performance when the composite foaming agent is actually used; the composite foaming agent is used for carbon dioxide oil driving, and formed milky liquid is prone to emulsion breaking, and the composite foaming agent is good in stability and foaming performance, wide in application range and capable of being applied to the field of carbon dioxide oil driving. The formula is defined in the description.

The invention discloses a nano-emulsion oil-displacing agent synthesized by a one-step method. The nano-emulsion oil-displacing agent dispersion is prepared with injected water and pumped into the formation. The nano-emulsion oil-displacing agent is spontaneously enriched at the oil-water interface, and Under the induction of formation shear, the Pickering emulsion is formed by directional adsorption at the oil-water interface. Under the condition of water content in the reservoir, the viscosity of the emulsion is directly proportional to the formation water saturation and inversely proportional to the formation oil saturation, thereby automatically adjusting the oil-water interface. Mobility, stable displacement front, enhanced oil recovery. Nano-emulsification oil displacement agent can also be used in combination with surfactants to enhance oil recovery through the synergy of in-situ emulsification viscosity increase and ultra-low interfacial tension oil washing. The principle of the method is reliable, the raw material is cheap and easy to obtain, the economic benefit is outstanding, and the method has broad industrial application prospects.