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45results about How to "Easy to remove by filtration" patented technology
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Heavy metal sewage treatment agent
InactiveCN104118921ARemove reachEasy to remove by filtrationWater/sewage treatment by ion-exchangeWater/sewage treatment by flocculation/precipitationCelluloseCarbamate
The invention relates to a heavy metal sewage treatment agent which is prepared from dodecyl diethylene triamine, dimethyl diallyl ammonium chloride, acrylamide, dibenzoyl peroxide, powdered activated carbon, ethylene diamine tetraacetic acid, tert-butylamine, carbamate, dithiocar-bamate, thiocarbamic acid ester, starch, cellulose, water soluble starch xanthate ester, sodium silicate, potassium peroxodisulfate, sodium hydrosulfite, strong base and water. The heavy metal sewage treatment agent disclosed by the invention is formed by being modified with a high-molecular compound; the mixture contains a plurality of active groups which can be complexed, chelated, absorbed and exchanged with heavy metal, so that heavy metal ions in the aqueous solution can be removed; the heavy metal sewage treatment agent has good removal effect on heavy metal ions, the removal rate is above 97%, and furthermore, the heavy metal sewage treatment agent has stronger Ca2+ and Mg2+ resistant capability; the removal rate of cadmium-containing sewage is 99.8%, which meets the national emission standard; and the removal rate of chromium-containing sewage is above 99.6%.
Owner:江西省恩皓环保有限公司
Heavy metal trapping agent
ActiveCN106986432AChemically stableStrong chelating abilityWater contaminantsWater/sewage treatment by flocculation/precipitationSolubilityEthylenediamine
The invention relates to a heavy metal trapping agent in the field of environment protection. The heavy metal trapping agent is prepared from polymer containing a polyethylene diamine tetra-acetic acid unit, wherein by weight percentage, the content of the polyethylene diamine tetra-acetic acid unit is 45-100% of polymer; the polymer is homopolymer or copolymer; the polyethylene diamine tetra-acetic acid unit is a form of sodium salt, potassium salt or ammonium salt. The defect that a chelate compound of existing ethylenediamine tetra-acetic acid and the heavy metal is generally soluble is overcome, and the provided heavy metal trapping agent has strong heavy metal chelating power, and the solubility can be controlled by pH of the solution; moreover, the trapping agent is free of toxicity.
Owner:ZEROWASTE ASIA PTE LTD
Synthesis method of herbicide 2, 4-dichlorphenoxyacetic acid
InactiveCN101857544AReduce pollutionEasy to remove by filtrationCarboxylic preparation by oxidationSynthesis methodsSodium iodide
The invention relates to a synthesis method of herbicide 2, 4-dichlorphenoxyacetic acid, which comprises the following steps that: under the existence of weak base and the effect of sodium iodide and phase transfer catalyst, 2, 4-dichlorophenol is condensed with monochloroacetone through Williamson to obtain 2, 4-dichlorophenoxy acetone; the obtained 2, 4-dichlorophenoxy acetone is reacted and acidified in sodium hypochlorite solution to finally obtain 2, 4-D. With the method, the free phenol content in the product can be effectively controlled below the national standard, the discharge of the phenol-contained waste water can be reduced, and the synthesis method is simple and convenient to operate and has good product quality and small environmental pollution.
Owner:上海力智生化科技有限公司
Equipment for treating waste emulsion
ActiveCN104649481AGood removal effectExtended service lifeFatty/oily/floating substances removal devicesMultistage water/sewage treatmentWater treatment systemEmulsion
The invention provides equipment for treating waste emulsion. The equipment is characterized by comprising a floating oil removal device, an oil-water separation device, and an electrochemical treatment device, wherein the floating oil removal device is used for removing floating oil from to-be-treated waste emulsion, and removing the floating oil floating on the level of the waste emulsion; the oil-water separation device is used for performing oil-water separation to the waste emulsion without floating oil, and removing the dispersion oil suspending in the waste emulsion; and the electrochemical treatment device is used for performing electrochemical treatment to the waste emulsion which is subjected to oil-water separation treatment, so that emulsifying oil and dissolved oil are flocculated, wherein an electrified aluminum plate and a nanoceramic membrane are used for performing electrochemical treatment; a disconnected nanoceramic membrane is used for performing ultrafiltration treatment to the stand and precipitated crude emulsion. After being treated through the equipment, the quality of effluent water is good, and the effluent water can completely meet the emission limit requirement of a public sewage treatment system in Beijing Integrated discharge standard of water pollutants DB11 / 307-2013.
Owner:BEIJING SINORICHEN ENVIRONMENTAL PROTECTION
Pressure stabilizing type non-negative pressure water supply system
ActiveCN111561023AScientific and reasonable structureSafe to useWater/sewage treatment by irradiationGeneral water supply conservationWater supply networkPiston
The invention discloses a pressure stabilizing type non-negative pressure water supply system which comprises a water inlet pipe, a water inlet pipe pressure stabilizing device, a water supply power combination device and a water supply pipe. The water inlet pipe pressure stabilizing device is integrally arranged on the water inlet pipe communicated with a municipal tap water pipe, and the water inlet pipe is supplied to all users after being treated and pressurized by the water supply power combination device; the water inlet pipe pressure stabilizing equipment comprises a high-level water tank, a hydraulic cylinder and a pressurizing barrel, the high-level water tank is communicated with the water inlet pipe through an L-shaped pipe, a water replenishing valve is arranged on the L-shapedpipe, the bottom of the high-level water tank is communicated with the pressurizing barrel through a folding pipe, a first electromagnetic control valve and a third check valve are arranged on the folding pipe, and a liquid level sensor is arranged in the high-level water tank; and an output shaft of the hydraulic cylinder is fixedly connected with a piston in the pressurizing barrel, the bottomend of the pressurizing barrel is communicated with the water inlet pipe through a pressurizing pipe, and a second electromagnetic control valve and a fourth check valve are arranged on the pressurizing pipe.
Owner:安徽海沃特水务股份有限公司
Anti-corrosion secondary water supply non-negative pressure equipment
InactiveCN111547929AScientific and reasonable structureEasy to useWater/sewage treatment by irradiationSpecific water treatment objectivesIon exchangeIon-exchange resin
The invention discloses anti-corrosion secondary water supply non-negative pressure equipment. One end of a water conveying pipe is connected with a treatment tank; a granular activated carbon filterscreen is fixedly mounted at the top of a treatment tank; an annular fixing frame is fixedly connected to a position, which is located below the granular activated carbon filter screen, in the treatment tank; an annular fixing groove is formed in the bottom end of the annular fixing frame; an ion exchange resin filter element is mounted in the middle of the treatment tank; and the top end of the ion exchange resin filter element is fixedly connected with an upper mounting block. The structure is scientific and reasonable, the equipment is safe and convenient to use, by using the ion exchange resin filter element, free anions and cations in the water are removed, the pH value of water is reduced, corrosion of water to the equipment is reduced, water in the equipment will not be polluted bythe rusts, chlorides in the water can be absorbed by using the granular activated carbon filter screen, and the probability that the equipment is corroded is further reduced.
Owner:罗显容
Brewing method of pawpaw rice wine
ActiveCN104152316ASolve the problem of high starting acidityPrevent rancidityAlcoholic beverage preparationFruit winePapaya family
The invention discloses a method for brewing papaya rice wine. The preparation method comprises the following steps of: selecting fresh papaya, crushing, juicing, mixing, fermenting, filtering, performing post-fermentation, clarifying, ageing, and soaking fruit residues; and mixing, clarifying, filtering and canning. The nutrition and medicinal value of papaya are mixed, the drinking mouthfeel aroma and aroma coordination of the rice wine are improved, and the sourness and sweetness are moderate.
Owner:HUANGSHAN DUOWEI BIOLOGICAL GRP
Preparation method of potassium ferrate
The invention discloses a preparation method of potassium ferrate solid, belonging to the technical field of water treatment. The preparation method comprises the following steps: (1) reacting calcium hypochlorite and potassium carbonate to obtain an alkaline saturated potassium hypochlorite solution; (2) in an ice water bath environment, adding iron nitrate nonahydrate solid into the alkaline saturated potassium hypochlorite solution to generate a potassium ferrate solution; (3) adding a saturated potassium hydroxide solution into the potassium ferrate solution, standing in an ice water bath, and carrying out vacuum filtration to obtain a potassium ferrate solid crude product; (4) dissolving the potassium ferrate crude product in a potassium hydroxide solution, carrying out vacuum filtration, recrystallizing in the ice water bath, and carrying out vacuum filtration to obtain the recrystallized potassium ferrate solid; and (5) carrying out immersion cleaning on the recrystallized potassium ferrate solid sequentially with n-hexane, ethanol, n-pentane and ethanol, and carrying out vacuum drying to constant weight, thereby obtaining the finished potassium ferrate powder solid product. The method is simple to operate, avoids using dangerous gas chlorine and aether, and has the advantages of high safety and high potassium ferrate purity (greater than 98%).
Owner:MUNICIPAL ENVIRONMENTAL PROTECTION ENG CO LTD OF CREC SHANGHAI GRP
Method for recovering, treating and recycling quaternary ammonium base
InactiveCN108623475AReduce viscosityImprove liquidityAmino compound purification/separationOrganic matterSolvent
The invention discloses a method for recovering, treating and recycling quaternary ammonium base. According to the invention, the method overcomes disadvantages in conventional recovery and treatmentof quaternary ammonium base produced in preparation of p-aminodiphenylamine by using a nitrobenzene process; the method of the invention has an extra procedure of solvent extraction and recovery of p-aminodiphenylamine and macromolecular viscous organic substances in the quaternary ammonium base, thereby lowering the content of p-aminodiphenylamine and macromolecular viscous organic matters in theammonium base, reducing the viscosity of the recovered quaternary ammonium base, decreasing difficulties in desalting filtering of the recovered quaternary ammonium base, improving desalting effect on the recovered quaternary ammonium base and promoting normal implementation of subsequent condensation reactions and reduction reactions.
Owner:CHINA PETROLEUM & CHEM CORP +1
Treatment agent for wastewater containing heavy metals
InactiveCN108358251AGood removal effectReduce moisture contentWater contaminantsWater/sewage treatmentChemical reactionCadmium Cation
The invention discloses a treatment agent for wastewater containing heavy metals. The treatment agent comprises raw materials in parts by weight as follows: 40-50 parts of sodium sulfate, 50-70 partsof polymeric silicate-aluminum sulfate, 45-60 parts of sodium sulfide, 8-16 parts of natural coal, 10-15 parts of acrylamide, 10-15 parts of activated carbon, 6-10 parts of cellulose, 10-20 parts of sodium chloride, 2-8 parts of strong base, 15-25 parts of a surfactant, 12-20 parts of an antirust agent and 50-60 parts of clear water. The treatment agent can be subjected to a chemical reaction withvarious heavy metal ions in wastewater under the conditions of normal temperature and large-range pH by adjusting pH value, and insoluble flocculent precipitates which are low in water content and easily removed by filtering are rapidly generated in a short time; compared with a common agent, the removing effect is improved by 9%-15%, decontamination time is remarkably shortened by 20%-40%, cadmium-containing sewage removal rate reaches 99.3%, chromium-containing sewage removal rate reaches 99.6%, lead-containing sewage removal rate reaches 99.5%, all the indexes exceed the national standard,and the decontamination effect is obvious.
Owner:佛山杰致信息科技有限公司
Production method of green plum essence
The invention discloses a production method of green plum essence. The production method includes the steps of: 1) washing and pre-boiling green plums, removing pits and squeezing the green plums to obtain green plum pulp; 2) sterilizing the green plum pulp and filling and sealing the green plum pulp and storing the green plum pulp for 1-2 years at normal temperature; 3) pouring the green plum pulp into a heat-preservative jacketed pot, heating the green plum pulp to boiling, performing boiling reflux for 8-10 h, and stopping heating and maintaining the temperature for 8-10 h; 4) heating the green plum pulp to boiling again, and concentrating the green plum pulp under normal pressure, filtering the green plum pulp to remove pulp fibers, and maintaining the temperature of the filtrate in a heat-preservative material for 8-10 h; and 5) heating the filtrate to boiling, and concentrating the filtrate under normal pressure to obtain the green plum essence. The green plum essence is high in content of mumefural and reaches more than 0.5% in mass percentage content of the mumefural. The green plum essence has a clear and bright color, has good solubility, is free of coking taste and has a pure mouth feel and high nutritional value. The method is simple in operations, is low in production cost and is easy to achieve large-scale industrial production.
Owner:广东科贸职业学院
Preparation method of mumefural
The invention provides a preparation method of mumefural, which comprises the following steps: selecting raw materials; performing pretreatment; preparing green plum slurry; performing biological enzymolysis; performing inactivation; performing primary filtration; performing primary concentration; performing secondary concentration; and performing secondary filtration to obtain the mumefural. Themumefural prepared by the invention has bright color, good solubility and high nutritional values, and has no burnt taste, no carcinogenic substance, pure taste and high nutritional values because a traditional high-temperature boiling process is not adopted.
Owner:NANJING FORESTRY UNIV
L-carnitine preparation method
ActiveCN103012177BReduce energy consumptionReduce difficultyOrganic compound preparationAmino-carboxyl compound preparationStructural formulaSolvent
The invention discloses a L-carnitine preparation method which comprises the following steps: (1), adding an alcohol solvent, a compound shown as a formula (I) and a catalyst with a structural formula (V) into a reaction kettle, sealing the reaction kettle, displacing air in the reaction kettle with nitrogen, then displacing the nitrogen in the reaction kettle with hydrogen, carrying out asymmetric catalytic hydrogenation to obtain an alcohol solution of a compound shown as a formula (II); and (2), adding organic alkali, which can be dissolved in an anhydrous alcohol solvent, in the compound shown as the formula (II), introducing trimethylamine gas while stirring, so as to obtain a compound shown as the formula (III) and a sodium chloride solid; filtering and separating the sodium chloride solid, concentrating and recycling the alcohol solvent, and finally adding water for hydrolysis to realize a compound L-carnitine shown as the formula (IV). By adopting the preparation method provided by the invention, the difficulty in the aftertreatment in greatly reduce, the production cost is further reduced, and the total recovery is higher than 65%.
Owner:南通宏信化工有限公司
Preparation method by using amine and imine nitrogen methylation and application thereof
ActiveCN106892826ARich sourcesLow costCarboxylic acid nitrile preparationOrganic compound preparationPhenylsilaneIsotope
The invention discloses a preparation method by using amine and imine nitrogen methylation and application thereof. The preparation method comprises the following steps: A, adding an active carbon loaded platinum catalyst into a Schlenk tube, and after vacuumizing to replace argon, adding a solvent; B, under protection of argon, separately adding phenylsilane, an initial raw material and formic acid; C, stirring the whole reaction system at a certain temperature to react; and D, after reaction, adding ethyl acetate into the system to dilute, stopping the reaction by using a sodium hydroxide aqueous solution, performing extraction with ethyl acetate, separating out an organic phase, drying and filtering the organic phase, and performing rotatable evaporation to remove the solvent. Column chromatography is performed on residues by using ethyl acetate / petroleum ether mixed solvent to obtain a target product, wherein the ethyl acetate and petroleum ether are different in proportion. According to the application of the method in isotope labeled drug synthesis, the dosage of a catalyst is extremely low, the cost is quite low, and the method is suitable for large-scaled production, can be suitable for amine and imine with different substituents, and suitable for realizing methylation conveniently on nitrogen atoms in a natural product structure to prepare drug molecules.
Owner:湖北骐盛医药科技有限公司
Acidic sewage heavy metal trapping agent
InactiveCN111825191AReduce moisture contentLow toxicityWater contaminantsWaste water treatment from metallurgical processChemical reactionSodium phosphates
The invention relates to an acidic sewage heavy metal trapping agent, which is prepared from the following raw materials by weight: 12-21 parts of sodium dimethyl dithiophosphate; 6-10 parts of sodiumdimethyldithiocarbamate; 3-6 parts of sodium thiosulfate; 1-3 parts of trisodium phosphate; 0.2-0.5 part of sodium nitrite; and 59.5-77.8 parts of water . The preparation process is simple, the operation is easy, the acidic sewage heavy metal trapping agent can be effectively subjected to chemical reaction with heavy metals in acidic sewage with a pH value of 0-5 to generate insoluble substancesinsoluble in a dilute acid solution, and almost can capture various heavy metals including Cu<2+>, Cd<2+>, Hg<2+>, Pb<2+>, Mn<2+>, Ni<2+>, Zn<2+>, Cr<3+> and Co<3+>. Precipitation is rapid, and afterthe acidic sewage is treated, the solid-liquid separation is rapid, simple and convenient.
Owner:NORTHWEST RES INST OF MINING & METALLURGY INST
Treating agent for removing heavy metals in wastewater
InactiveCN106830122AEasy to prepareRemove reachWater contaminantsScale removal and water softeningEmission standardDipotassium phosphate
The invention belongs to the technical field of wastewater treatment and particularly relates to a treating agent for removing heavy metals in wastewater; the treating agent is prepared from 30-60 parts of Chinese medicine fermentation broth, 20-50 parts of tannins, 15-35 parts of dipotassium phosphate, and 5-20 parts of sodium polyacrylate. The treating agent according to the invention has the advantages that various heavy metal ions can be removed at a time, a varieties of heavy metal ions can be treated, the removal rate reaches 99% and above, the national specified emission standard is met, the Chinese medicine fermentation broth and tannins are natural materials and have low secondary pollution caused to water, a treating method is simple, and treating cost is low.
Owner:GUILIN RONGTONG TECH CO LTD
Method for preparing chiral organoboron compound
ActiveCN110590820ARich sourcesSimple methodOrganic-compounds/hydrides/coordination-complexes catalystsCatalytic reactionsSolventChemistry
The invention relates to the field of compound synthesis, in particular to a method for preparing chiral organoboron compound through catalysis of functionalized chitosan support copper, and further relates to application of the method for preparing the chiral organoboron compound through catalysis of functionalized chitosan support copper in synthesizing a delta-hydroxyl compound and diabetes treatment drug molecules. The functionalized chitosan support copper is adopted as a catalyst, bisdiboron is adopted as a reaction reagent, water is adopted as a solvent, sodium perborate tetrahydrate isadopted as an oxidant, boron addition reactions are selectively performed for substrates with different substituent groups respectively, and furthermore, the delta-hydroxyl compound is prepared through a continuous oxidation reaction.
Owner:HUBEI ENG UNIV
Method for extracting grease in food and application thereof
InactiveCN113654864ASimple filterLow boiling pointPreparing sample for investigationTesting foodProcess engineeringSolvent
The invention discloses a method for extracting grease in food and application thereof, and the method comprises the following steps: (1) mixing sesame paste or peanut butter with a flocculant, violently stirring and uniformly mixing, then adding a grease extraction agent, shaking, and standing; and (2) after standing and layering, taking an upper-layer organic-phase supernatant, carrying out dehydration treatment on the organic phase, and then carrying out desolventizing treatment, so as to obtain the grease to be detected. According to the method, protein is subjected to modification treatment and then is extracted and filtered, so that the method is simple and convenient to operate, is more efficient and rapid, and effectively solves the problem of inaccurate detection caused by oxidation due to overlong filtering time in the process of extracting grease in peanut butter and sesame paste samples. Meanwhile, an organic phase in the filtered filtrate can be quickly removed in an evaporation manner, so that the oil extraction and preparation time is remarkably shortened, and the detection efficiency is greatly improved. In addition, the method disclosed by the invention is good in oil extraction effect and extremely easy to meet the use amount required by an oil test.
Owner:SHANDONG INST FOR FOOD & DRUG CONTROL
Treatment method of landfill leachate concentrate
InactiveCN111995111ASolve processing problemsAchieve stabilizationWater contaminantsTreatment involving filtrationSulfateSlag
The invention discloses a treatment method of A landfill leachate concentrate, specifically comprising the following steps of: (1) adding a heavy metal ion precipitation agent to a landfill leachate concentrate, stirring, standing, and filtering to obtain a concentrate I; (2) sequentially adding sodium sulfate and calcium sulfate into the concentrate I, and stirring to obtain a concentrate II; and(3) adding Portland slag cement or Portland fly-ash cement into the concentrate II, stirring, curing and landfilling. According to the invention, the Portland slag cement or Portland fly-ash cement is used to solidify the landfill leachate concentrate therein, thereby achieving the purposes of harmlessness and stabilization, and effectively solving the treatment problem of the landfill leachate concentrate.
Owner:山东达源环保工程有限公司
A pressure-stabilized non-negative pressure water supply system
ActiveCN111561023BScientific and reasonable structureEasy to useWater/sewage treatment by irradiationGeneral water supply conservationHydraulic cylinderPressure stabilization
The invention discloses a pressure-stabilizing non-negative pressure water supply system, which comprises a water inlet pipe, a water inlet pipe voltage stabilizing device, a water supply power combination device and a water supply pipe. , after the water inlet pipe is processed and pressurized by the water supply power combination equipment, it is supplied to each user; the water inlet pipe pressure stabilization equipment includes a high-level water tank, a hydraulic cylinder and a pressurized cylinder. The high-level water tank is connected with the water inlet pipe through an L-shaped pipe. A replenishment valve is provided, and the bottom of the high-level water tank communicates with the pressurized cylinder through a folded pipe. The folded pipe is provided with a first electromagnetic control valve and a third check valve, and a liquid level sensor is built in the high-level water tank; the output shaft of the hydraulic cylinder It is fixedly connected with the piston in the pressurized cylinder, and the bottom end of the pressurized cylinder communicates with the water inlet pipe through the pressurized tube, and the second electromagnetic control valve and the fourth check valve are arranged on the pressurized tube.
Owner:安徽海沃特水务股份有限公司
Heavy metal sewage treatment agent
InactiveCN104118921BRemove reachEasy to remove by filtrationWater/sewage treatment by ion-exchangeWater/sewage treatment by flocculation/precipitationCelluloseCarbamate
The invention relates to a heavy metal sewage treatment agent which is prepared from dodecyl diethylene triamine, dimethyl diallyl ammonium chloride, acrylamide, dibenzoyl peroxide, powdered activated carbon, ethylene diamine tetraacetic acid, tert-butylamine, carbamate, dithiocar-bamate, thiocarbamic acid ester, starch, cellulose, water soluble starch xanthate ester, sodium silicate, potassium peroxodisulfate, sodium hydrosulfite, strong base and water. The heavy metal sewage treatment agent disclosed by the invention is formed by being modified with a high-molecular compound; the mixture contains a plurality of active groups which can be complexed, chelated, absorbed and exchanged with heavy metal, so that heavy metal ions in the aqueous solution can be removed; the heavy metal sewage treatment agent has good removal effect on heavy metal ions, the removal rate is above 97%, and furthermore, the heavy metal sewage treatment agent has stronger Ca2+ and Mg2+ resistant capability; the removal rate of cadmium-containing sewage is 99.8%, which meets the national emission standard; and the removal rate of chromium-containing sewage is above 99.6%.
Owner:江西省恩皓环保有限公司
heavy metal scavenger
ActiveCN106986432BStrong chelating abilityImprove adsorption capacityWater contaminantsWater/sewage treatment by flocculation/precipitationSolubilityEthylenediamine
The invention relates to a heavy metal trapping agent in the field of environment protection. The heavy metal trapping agent is prepared from polymer containing a polyethylene diamine tetra-acetic acid unit, wherein by weight percentage, the content of the polyethylene diamine tetra-acetic acid unit is 45-100% of polymer; the polymer is homopolymer or copolymer; the polyethylene diamine tetra-acetic acid unit is a form of sodium salt, potassium salt or ammonium salt. The defect that a chelate compound of existing ethylenediamine tetra-acetic acid and the heavy metal is generally soluble is overcome, and the provided heavy metal trapping agent has strong heavy metal chelating power, and the solubility can be controlled by pH of the solution; moreover, the trapping agent is free of toxicity.
Owner:ZEROWASTE ASIA PTE LTD
Method for neutralizing sulphur acidity by using refined lime
InactiveCN102887483ALow priceReduce manufacturing costSulfur preparation/purificationSulfateChemistry
The invention provides a method for neutralizing sulphur acidity by using refined lime, belonging to the field of sulfuric acid production processes. According to the technical scheme, the method comprises the steps of: adding the refined lime in melted liquid sulphur, stirring for reacting to generate micro-soluble calcium sulfate, and removing the calcium sulfate through a filter net. The method has the beneficial effects that the price of the refined lime is lower than that of sodium carbonate, thus the production cost is lowered for enterprises, and a neutralizing effect same as that of a method based on sodium carbonate is achieved, the production is ensured; and insoluble calcium sulfate is generated after the refined lime is used and insoluble calcium sulfate can be filtered and removed conveniently, thus the method is more convenient and rapid.
Owner:TIANJIN BODA SULFURIC ACID IND
A kind of preparation method of potassium ferrate
Owner:MUNICIPAL ENVIRONMENTAL PROTECTION ENG CO LTD OF CREC SHANGHAI GRP
Processing technology of wall-broken glossy ganoderma tritici
InactiveCN111904987AEasy to remove by filtrationAvoid confusionPowder deliveryPlant ingredientsProcess engineeringFiltration
The invention discloses a processing technology of wall-broken glossy ganoderma tritici. The processing technology comprises the following steps of P1, selecting glossy ganoderma tritici raw materials; P2, obtaining cleaned raw materials; P3, obtaining cooked raw materials; P4, obtaining cooled raw materials; P5, obtaining molten raw materials; P6, obtaining mixed raw materials; P7, obtaining treated raw materials; P8, performing filtering to remove a solution to obtain wall-broken raw materials; and P9, drying the wall-broken raw materials to complete processing of the tritici, cooking and softening the tritici raw materials, then performing repeated liquid nitrogen freezing operation, treating spore walls through rapid thermal expansion and contraction characteristics, and then performing ultrasonic treatment by mixing sodium chloride particles, so that filtration and removal are convenient, and mixing is avoided. Besides, the wall breaking rate and treatment efficiency are effectively improved, the product quality is guaranteed, processing is convenient, and application and popularization are facilitated.
Owner:ZHEJIANG FANGGE PHARMA
Method for deep removal of molybdenum in manganese sulfate solution by fresh nano-hydrated manganese oxide
InactiveCN110240204AMeet production needsLower Disposal CostsNanotechnologyManganese oxides/hydroxidesSulfateFiltration
The invention discloses a method for deep removal of molybdenum in a manganese sulfate solution by a fresh nano-hydrated manganese oxide. The method comprises the following steps: adding an oxidizing agent to the manganese sulfate solution, performing stirring and carrying out a reaction, oxidizing manganese ions in the manganese sulfate solution to form fresh nanometer manganese oxide, adjusting a pH value of the solution, and performing stirring and carrying out a reaction and then performing filtering to obtain a filtrate, namely a purified manganese sulfate solution. The method for deep removal of molybdenum in a manganese sulfate solution has the advantages of simplicity, high efficiency, low cost and good stability, deficiencies of existing methods are solved, requirements of a molybdenum content of a manganese sulfate solution for preparing high-purity manganese-based materials are met, the fresh nano-hydrated manganese oxide used for molybdenum removal is generated in situ in the manganese sulfate solution, and does not need to be separately prepared. The treatment process does not need to be heated, no other preparations are needed for auxiliary filtration, a molybdenum content of a filtered manganese sulfate solution can be 0.015 mg / L or less, and needs of subsequent high-purity manganese-based material production are met.
Owner:GUIZHOU UNIV +1
Method for determining thiocyanate in water containing iron-cyanogen complex in gold cyaniding process
PendingCN112345518AIncrease the absorbance valueEasy to remove by filtrationMaterial analysis by observing effect on chemical indicatorPreparing sample for investigationFerricyanideThiocyanic acid
The invention relates to a method for determining thiocyanate in water containing an iron-cyanogen complex in a gold cyaniding process, and belongs to the technical field of thiocyanate determination.The method comprises the following steps: adjusting a sample solution to be acidic, adding 0.1 g of ferrous sulfate to form iron ferrocyanide precipitate, adjusting to be alkaline, adding 0.1 g of zinc sulfate to flocculate the precipitate, heating to boil for 20 minutes, taking down, cooling, fixing the volume to a 100mL volumetric flask, performing dry filtration, taking a proper volume of testsolution, and determining the content of thiocyanate by adopting an iron salt colorimetric method. Aiming at the water quality containing high-content ferricyanide complex, the invention successfullyfinds out a combined masking agent for masking the ferricyanide complex, finds out an organic solvent capable of inhibiting fading of thiocyanate, and solves the problem that thiocyanate in wastewater containing the ferricyanide complex cannot be accurately determined.
Owner:CHANGCHUN GOLD RES INST
A kind of preparation method and application of amine and imine nitrogen methylation
ActiveCN106892826BRich sourcesLow costCarboxylic acid nitrile preparationOrganic compound preparationPtru catalystEthyl acetate
Owner:湖北骐盛医药科技有限公司
A kind of method for reducing polychlorinated biphenyl content in diphenyldimethoxysilane
The invention relates to a method for reducing polychlorinated biphenyl content in diphenyldimethoxysilane. The method comprises the following steps: S1, adding metal sodium into diphenyldimethoxysilane containing polychlorinated biphenyl, maintaining the temperature in an oil bath at a temperature of 100-105 DEG C, stirring for 5-6 hours, and cooling to room temperature; S2, regulating the pH value of the system to be 6-8 by using organic acids; and S3, filtering, and rectifying, thereby obtaining the diphenyldimethoxysilane product. With the adoption of the technical scheme, the method disclosed by the invention has the advantages that the metal sodium can be in a molten state at the temperature of 100-105 DEG C and has high enough activity, so that the metal sodium is easily reacted with chlorine in the polychlorinated biphenyl; acid used for regulating the pH value of the system is acetic acid, the formed salt is sodium acetate, and the diphenyldimethoxysilane product is not damaged in the subsequent distillation process so as not to cause product losses; and the by-product, namely sodium chloride or sodium acetate is not dissolved in the reaction system and is easily removed by filtration, and the industrial operation is simple.
Owner:湖北省化学工业研究设计院 +1
Method for preparing light-color disproportionated rosin by using organic ceramsite decolorising agent
InactiveCN106010272AReduce dosageReduce manufacturing costNatural resin chemical modificationNatural resin purificationLiquid stateAcid value
The invention discloses a method for preparing light-color disproportionated rosin by using an organic ceramsite decolorising agent. The method comprises the steps of: 1) transferring the rosin from a sedimentation tank to a dissolver for dissolving, and sending the dissolved grease liquid into a clarification tank; 2) introducing protection gas, standing the dissolved grease liquid in the clarification tank static to automatically stratify the grease liquid and water, and sending the clarified grease liquid into a reactor; 3) in an inert gas environment, heating the reactor to 250-270 DEG C; 4) maintaining the protection gas environment, reducing the temperature to below 160 DEG C, and adding a palladium carbon ceramic catalyst and an organic ceramsite decolorising agent; 5) maintaining the protection gas environment, heating to 280-290 DEG C; and 6) reducing the temperature, and filtering the product in liquid state to remove the catalyst and decolorising agent mixed in the reaction product to obtain the light-color disproportionated rosin. The method for preparing light-color dispropriated rosin reduces the amount of catalyst in posttreatment, and reduces production cost, and the disproportionated rosin has higher acid value, lighter color and higher yield.
Owner:广西容县宏旺树脂有限公司
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