20results about How to "Promote demulsification" patented technology

The invention discloses a demulsifier, and relates to the technical field of wastewater treatment, and the demulsifier comprises the following components in parts by weight: 58.5-79.5 parts of polyacrylamide, 3.5-6.5 parts of cationic organosilicon modified polyacrylamide, 14.5-35.5 parts of polyoxyethylene, 0.2-1.8 parts of ammonium sulfate, 0.1-0.5 part of Meso-tetramethyl-meso-tetra-p-aminophenyl calix [4] pyrrole, 1-3 parts of 1, 3-bis ((trihydroxymethyl) methylamino) propane, 1-3 parts of 1, 3-bis (trihydroxymethyl) methylamino) propane, 0.1-0.5 part of 1, 2, 3, 4-tetramethyl-1, 3, 4, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5-tetramethyl-1, 3, 5 The invention relates to a water-soluble hyperbranched polyamide resin paint, which is prepared from the following components in parts by weight: 0.3 to 0.8 part of 2, 3-bis (2-hydroxyethyl)-2-imidazolone, 0.1 to 0.3 part of water-soluble hyperbranched polyamide resin, 0.8 to 1.2 parts of lauryl hydroxyethyl imidazoline, 0.6 to 1 part of amphoteric organic ionic salt and 80 to 100 parts of water. The demulsifier is small in dosage, remarkable in normal-temperature demulsification effect, high in efficiency, wide in application range and capable of effectively achieving oil removal and demulsification of the coking wastewater.

The invention discloses a PVDF emulsion demulsification washing process, and relates to the technical field of polymer modified materials. The process aims at effectively removing the residual additive in the polyvinylidene fluoride emulsion so as to improve the purity and the performance of the final product. The process comprises the following steps: firstly, mixing PVDF emulsion with a pre-prepared nano demulsifier, and conveying the mixture to a condensation tower through a screw pump; in the condensation tower, demulsifying the mixed solution at a set temperature, and mechanically stirring by adopting a frame type stirrer to promote the emulsion to be demulsified and form snowflake-shaped particles; and then, the demulsified material is discharged from the bottom of the condensation tower and enters a washing tower, and the residual auxiliary agent is removed by using deionized water in a countercurrent washing manner. And finally, dehydrating and drying the washed material. The method has the advantages that the demulsification and washing processes are optimized, so that the production efficiency is improved, the resource consumption is reduced, and meanwhile, the high purity and excellent performance of the PVDF product are ensured.

The invention provides a steam turbine oil complexing agent, steam turbine oil as well as a preparation method and application of the steam turbine oil. The steam turbine oil complexing agent is prepared from the following components in parts by mass: 60-80 parts of an antioxidant, 5-15 parts of a metal deactivator, 5-10 parts of an antirust agent, 0.5-5 parts of a demulsifier and 5-30 parts of a cosolvent, wherein the total mass part of the complexing agent is 100 parts. The steam turbine oil contains the steam turbine oil complexing agent which can well balance the acid value, rust resistance, emulsification resistance and oxidation resistance of an oil product, an L-TSA steam turbine oil (grade A) product meeting GB 11120-2011 Turbine Oil can be obtained by adding the complexing agent into proper base oil and supplementing with a proper amount of anti-foaming agent, and the steam turbine oil has the advantages of being long in oxidation life, low in cost and the like. The antirust performance, the anti-emulsification performance and the like are excellent.

The invention relates to the technical field of oil exploitation, in particular to a water-soluble demulsifier and a preparation method thereof.The water-soluble demulsifier is prepared from, by weight, 10-12 parts of composite molybdenum disulfide and 80-90 parts of water; the composite molybdenum disulfide is used as a main demulsifying material, the problems that an existing water-soluble demulsifying agent is large in dosage, poor in demulsifying effect and long in demulsifying time are solved, and meanwhile the good demulsifying performance can still be kept under the high-temperature and high-salt conditions.

The invention relates to the technical field of demulsification, and provides an oxygen-hybridized nonionic demulsification material as well as a preparation method and application thereof, the preparation method of the oxygen-hybridized nonionic demulsification material comprises the following steps: (1) mixing a fatty alcohol nonionic polyether solution, a free radical initiator, olefinic acid and an oil-soluble auxiliary agent, and carrying out polymerization reaction to obtain a first polymer; and (2) carrying out catalytic esterification reaction on oxygen-enriched organic acid and the first polymer to obtain an esterification reaction system, and removing the solvent from the esterification reaction system to obtain the oxygen-hybridized nonionic demulsification material. The oxygen-enriched organic acid and the oil-soluble additive are used as modified substances, so that the ability of the oxygen-hybridized nonionic demulsification material to destroy an oil-water interfacial film and the solubility of the oxygen-hybridized nonionic demulsification material in an oil phase are remarkably improved, the demulsification effect on unconventional petroleum emulsion with stable nano-micro solid particles is excellent, and the application prospect is wide.

This invention discloses a superhydrophobic fiber membrane with a wrinkled structure and its preparation method. The preparation method is as follows: immersing a polypropylene fiber membrane in a methanol solution of a photoinitiator; removing it and irradiating it under a UV lamp; then immersing it in a methanol solution of an amino monomer and irradiating it under a UV lamp; then immersing it in a hexane solution of an acyl chloride, removing it, and then immersing it in a methanol solution of a hydroxyl monomer for interfacial polymerization; removing it; drying it; immersing it in a hexane solution of a long-chain alkylchlorosilane, removing it, and drying it to obtain a superhydrophobic fiber membrane with a wrinkled surface structure. The method of this invention is simple, easy to implement, and operates under mild conditions, requiring no precision instruments. It offers fast separation speed, high efficiency, and good reusability. When used to separate water-in-oil emulsions containing surfactants, the wrinkled structure on the fiber membrane surface increases the contact area between the superhydrophobic surface and the emulsion, promoting the coalescence and demulsification of microemulsions, and achieving a water retention rate of over 99%.

The invention provides an emulsified fiber asphalt anti-collapse plugging agent and a preparation method thereof. The emulsified fiber asphalt anti-collapse plugging agent is formed by mixing emulsified asphalt, MMH positive electricity gel and basalt fiber powder. The basalt fiber powder is distributed in the emulsified asphalt anti-collapse plugging agent in a three-dimensional disordered manner, so that the strength of an asphalt plugging layer can be enhanced, the monofilament diameter of the basalt fiber powder is consistent with the average crack distribution of most shale stratums, the basalt fiber powder has better compatibility, the adhesive force between the plugging layer and the stratums after demulsification of the emulsified asphalt is enhanced, and the anti-collapse plugging effect is improved. The MMH positive electricity adhesive improves the stability of the whole system due to the characteristics of the MMH positive electricity adhesive, and is beneficial to adsorption, demulsification and sheet connection of emulsified asphalt and a stratum with negative charges. The emulsified fiber asphalt anti-sloughing plugging agent enhances the strength of a plugging layer after demulsification of emulsified asphalt and the adhesive force between the plugging layer and the stratum, and improves the anti-sloughing plugging effect. In addition, the preparation process is easy to operate, the cost is low, and the anti-collapse plugging agent has extremely high application prospects in the field of anti-collapse plugging of well walls.

The present invention relates to a preparation method and application of a polymer-based heavy oil low-temperature demulsifier, and belongs to the technical field of petroleum processing. The preparation method of the polymer-based heavy oil low-temperature demulsifier disclosed in the present invention comprises the following steps: (1) preheating resorcinol, mixing it with a sulfuric acid solution and keeping it warm, then adding formaldehyde and stirring to form a mixture; (2) cooling the mixture to room temperature, adding distilled water, and then adding sodium hydroxide to adjust the pH value to form a mixed solution; (3) adding an acyl chloride compound to the mixed solution and heating it, then passing ammonia gas to keep it warm, cooling it to room temperature and letting it stand for stratification, taking the lower layer and vacuum distilling to obtain a modified phenolic resin; (4) reacting the modified phenolic resin with an epoxy compound to obtain a demulsifier. The present invention obtains a modified phenolic resin by introducing a highly polar sulfonic acid group and an amide group, so that it is fully dispersed in an emulsion, replacing the natural active substance so that the interfacial film strength of the emulsion is reduced, thereby showing good demulsification performance.

The invention relates to the technical field of oil exploitation, in particular to an oil-soluble demulsifier and a preparation method thereof.The oil-soluble demulsifier is prepared from, by weight, 8-9 parts of block polymer, 2-3 parts of adsorption filler and 80-90 parts of water. Therefore, the problem that the demulsification efficiency is reduced due to re-aggregation of micro-oil drops after an alkali-surfactant-polymer flooding produced water system is demulsified by the existing demulsifier is solved, and meanwhile, the demulsifier can still keep good demulsification efficiency after being recycled for multiple times.

The invention discloses an efficient separation system for three-phase components of oily sludge and a separation method of the efficient separation system. The system comprises a homogenizing and tempering tank for dilution and viscosity reduction, a demulsification unit for chemical agent demulsification and thermal vibration agglomeration demulsification, a separation unit for three-phase separation and a recovery unit for recovering oil liquid, wastewater and oil sludge waste residues, an oil-containing sludge inlet of the homogenizing and conditioning tank is communicated with an oil-containing sludge outlet of the oil-containing sludge storage tank, a water inlet of the homogenizing and conditioning tank is communicated with a water outlet of the wastewater heating tank, and an oil-containing sludge outlet of the homogenizing and conditioning tank is communicated with an oil-containing sludge inlet of the demulsification unit; an oil-containing sludge outlet of the demulsification unit is communicated with an oil-containing sludge inlet of the separation unit; an oil phase outlet, a water phase outlet and an oil sludge solid phase outlet of the separation unit are respectively communicated with an oil phase inlet, a water phase inlet and an oil sludge solid phase inlet of the recovery unit; the oil-containing sludge is destabilized in a multi-stage enhanced synergistic demulsification mode, and efficient separation of three-phase components of the oil-containing sludge is realized through solid-liquid separation and oil-water separation.

The invention belongs to the technical field of oil production, and relates to a comb-shaped demulsifier for high solid crude oil demulsification and a preparation method thereof. The preparation method is as follows: 2-methacrylic alcohol and a catalyst are added to an autoclave, propylene oxide is added, the temperature is increased, the reaction is incubated, cooled, ethylene oxide is passed, the temperature is increased, the reaction is incubated, cooled, the pH value is adjusted to 7-8, and an intermediate is obtained; the intermediate is transferred to a reactor, and (3-acrylamide propyl) trimethylammonium chloride, benzyl methacrylate, butyl acrylate, nonylphenol polyoxyethylene ether, buffer salt, deionized water are added in sequence, stirred at high speed, a uniform emulsion is formed, and the pH value is adjusted to 7-8; an initiator is added dropwise, the temperature is increased, the reaction is incubated, the temperature is increased, the reaction is incubated, the temperature is lowered, and a viscous liquid is obtained; the above-mentioned viscous liquid is granulated to obtain a final product. The present invention has the characteristics of a wide source of raw materials, a simple synthesis process, no by-products, and a good demulsification effect.

The utility model relates to a kind of heavy hydrocarbon demulsification devices, comprising: first separator, including feed inlet and reflux port, the filter core is equipped in the first separator, the reflux port is located at the bottom end of the first separator, the reflux port is connected with the heavy tower by pipeline;Second separator, including discharge port and blowdown port, the second separator is equipped with water-absorbing adsorption layer inside, the blowdown port is located at the bottom end of the second separator;Transfer line, the two ends of the transfer line are connected with the first separator and the second separator respectively.The utility model can effectively realize heavy hydrocarbon demulsification clarification by step processing of heavy hydrocarbon, obtain high-purity heavy hydrocarbon product, and the overall structure of device is simple, equipment investment is small, operating cost is low, and demulsification effect is obvious.

The invention relates to a preparation method and application of a polymer-based thick oil low-temperature demulsifier, and belongs to the technical field of petroleum processing. The invention discloses a preparation method of a polymer-based thick oil low-temperature demulsifier. The preparation method comprises the following steps: (1) preheating resorcinol, mixing the resorcinol with a sulfuric acid solution, preserving heat, adding formaldehyde, and stirring to form a mixture; (2) cooling the mixture to room temperature, adding distilled water, and then adding sodium hydroxide to adjust the pH value to form a mixed solution; (3) adding an acyl chloride compound into the mixed solution, heating, then introducing ammonia gas for heat preservation, cooling to room temperature, standing for layering, taking a lower layer, and carrying out reduced pressure distillation to obtain modified phenolic resin; and (4) reacting the modified phenolic resin with an epoxy compound to obtain the demulsifier. The modified phenolic resin is obtained by introducing a high-polarity sulfonic acid group and an amide group, and the modified phenolic resin is fully dispersed in an emulsion to replace natural active substances to reduce the interfacial film strength of the emulsion, so that the emulsion shows good demulsification performance.

The invention discloses a demulsifier for oilfield sewage treatment, and relates to the technical field of sewage treatment. The preparation method of the demulsifier comprises the following steps: S1: after monomer A, monomer B and a catalyst are mixed evenly, propylene oxide is added and mixed evenly, and the mixture is reacted for 2-3 hours at 120-130°C, and then aged for 0.5-1.5 hours to obtain a low molecular weight polyether; S2: ethylene oxide is added to the low molecular weight polyether of step S1, mixed evenly, heated to 130-140°C, reacted for 2-3 hours, aged for 1-2 hours, cooled, washed, and obtained a high molecular weight polyether; S3: the high molecular weight polyether, monomer C, initiator and solvent in S2 are mixed evenly, the temperature is increased to 55-80°C, the mixture is reacted for 2-4 hours, cooled, and obtained a demulsifier. The demulsifier prepared by the invention not only has a good demulsification effect, but also has high stability and durability.

The invention provides a low-temperature demulsifier and a preparation method and application thereof, and belongs to the technical field of oil-water emulsion treatment, the low-temperature demulsifier has the following structure: # imgabs0 #, in which R1 and R2 are alkyl groups with C8-C18 carbon atoms; n is an integer greater than or equal to 1. The demulsifier provided by the invention is a novel amphiphilic surfactant, has high surface activity and good thermal stability, has good dispersibility in an oil phase due to two long carbon chains and a hydrophilic center, and has stronger acting force with natural interfacial active substances, so that an interfacial film composed of asphaltene is destroyed, and the demulsification process is promoted. The demulsifying agent is especially suitable for petroleum crude oil emulsion, and has the advantages of high demulsifying efficiency, small injection dosage, high demulsifying speed, obvious demulsifying effect and clear separated water phase. The method for preparing the demulsifying agent is simple in step and low in raw material price, and does not need complex separation equipment and expensive instrument equipment, so that the production cost of the demulsifying agent can be greatly reduced.

The invention relates to a pretreating agent as well as a preparation method and application thereof. The pretreatment agent is prepared from the following raw material components: cationic polyacrylamide, poly dimethyl diallyl ammonium chloride, 1-hydroxyethylidene-1, 1-diphosphonic acid, xanthan gum, potassium chloride, chitosan, acetic acid and a solvent, wherein the content of the cationic polyacrylamide is 0.7%-0.9% in percentage by mass, the content of the poly dimethyl diallyl ammonium chloride is 1.5%-3.0% in percentage by mass, the content of the hydroxyethylidene diphosphate is 25.3%-39.4% in percentage by mass, the content of the xanthan gum is 0.08%-0.15% in percentage by mass, the content of the potassium chloride is 0.08%-0.15% in percentage by mass, the content of the chitosan is 0.04%-0.06% in percentage by mass, and the balance of water. The content of the acetic acid is 2.0%-3.0%. The pretreatment agent improves the oil removal effect of a heavy crude oil sewage physicochemical process, is used for a heavy crude oil sump oil dehydration process, and realizes three-phase separation of oil, water and mud.

The invention discloses a treatment method of dicarboxylic acid fermentation liquor, which comprises the following steps: controlling pH and temperature, acidifying to a specific pH value, heating, adding dicarboxylic acid single salt and controlling temperature, promoting the demulsification of the fermentation liquor, layering the solution, separating and recovering upper alkane, carrying out solid-liquid separation on the lower solution containing the dicarboxylic acid single salt to obtain dicarboxylic acid single salt filtrate, and carrying out solid-liquid separation on the lower solution containing the dicarboxylic acid single salt to obtain the dicarboxylic acid single salt filtrate. And continuously adding acid for acidification to crystallize and separate out the dicarboxylic acid, and filtering, washing and drying to obtain the dicarboxylic acid. According to the treatment method disclosed by the invention, the dicarboxylic acid fermentation liquor is milder, the energy consumption is lower, the demulsification is better realized, more dicarboxylates are released, the alkane recovery and impurity separation are realized, the nitrogen content of the obtained dicarboxylic acid is lower, and the product quality is improved.

The present application provides a method for quantitatively detecting nucleic acids in a nucleic acid lipid nanoparticle complex, wherein sodium dodecyl sulfate is used as a demulsifier. According to the method for quantitatively detecting nucleic acids in a nucleic acid lipid nanoparticle complex of the present application, the effective nucleic acid concentration and encapsulation rate thereof can be accurately and quantitatively determined.

The present invention relates to the field of material technology, and discloses a super-hydrophobic porous organic cage-modified melamine sponge material and a preparation method and application thereof. The preparation method comprises: using a melamine sponge as a substrate, and using a solvothermal method to modify a super-hydrophobic porous organic cage on the substrate to obtain a super-hydrophobic porous organic cage-modified melamine sponge material. The material not only has obvious super-hydrophobicity, but also can efficiently demulsify an oil-in-water emulsion, and has excellent reusability, thereby expanding the application fields of porous materials and melamine sponges.

The present invention provides a centrifugal compressor oil additive, a centrifugal compressor oil and a centrifugal compressor. The lubricating oil additive of the present invention comprises, by mass percentage, 5%-30% of ionic liquid; 5%-50% of antioxidant; 1%-30% of rust inhibitor; 1%-30% of metal passivator; 1%-20% of demulsifier; 1%-20% of antifoaming agent; and a diluent oil balance; wherein the ionic liquid comprises a structure of formula 1. The lubricating oil additive of the present invention has relatively excellent anti-oxidation, anti-corrosion, anti-emulsification, anti-foaming and environmental friendliness.