20results about How to "Improve demulsification efficiency" patented technology

The invention discloses a flow field-electric field coordinated regulation and control dielectric and microchannel demulsification device and a flow field-electric field coordinated regulation and control demulsification method. The demulsification device comprises an outer cylinder electrode, an inner cylinder, a flow channel regulation assembly and a central electrode, the inner cylinder is sleeved in the outer cylinder electrode; the flow channel adjusting assembly comprises a plurality of sub-structures which are arranged in the first direction. The central electrode is arranged in the flow channel adjusting assembly; a second cavity for the fluid to pass through is formed between the inner surface of the inner cylinder and the outer surface of the flow channel adjusting assembly; and an electric field is formed between the outer cylinder electrode and the central electrode. According to the invention, the balance between the flow flux and the control precision is established by utilizing flow field-electric field coordinated regulation and control and the size effect of a fluid channel, so that the relatively large flow flux is ensured, the flow field-electric field can be precisely regulated and controlled, the collision and coalescence of emulsion droplets are effectively regulated and controlled, and the problem of high-efficiency separation of two phases after emulsification and extraction is solved.

The invention relates to the technical field of oily wastewater treatment, and discloses a kitchen oily wastewater treatment process based on demulsifying bacteria, which comprises the following steps: adjusting the pH value of kitchen oily wastewater to 6-9, standing and settling, skimming and collecting scum to obtain pretreated oily wastewater a; mixing the pretreated oily wastewater a with a composite demulsifier, introducing air at the speed of 10-20 mm / s, carrying out air flotation treatment for 45-55 minutes, skimming, and collecting suspended matters, so as to obtain pretreated oily wastewater b; and filtering the pretreated oily wastewater b, collecting filtrate and precipitates, and recovering, detecting and reusing the filtrate. The composite demulsifier can improve the stability of the strain in the kitchen oily wastewater and improve the treatment efficiency of the kitchen oily wastewater, and after the composite demulsifier absorbs water, swells and breaks, the modified nano carbon black can be combined with the modified carboxymethyl cellulose through static electricity, so that the composite demulsifier can be used for treating the kitchen oily wastewater. The adsorbed modified carboxymethyl cellulose is flocculated and settled along with the modified nano carbon black, and is removed through filtration.

The invention discloses a method for extracting plukenetia volubilis linneo oil based on pulsed electric field and freeze thawing synergistic demulsification. The method comprises the following steps: shelling plukenetia volubilis linneo, crushing the plukenetia volubilis linneo into powder, stirring the powder with deionized water to form a uniform solution, adjusting the pH value to 9.5-11.5, adding alkaline protease, carrying out water bath enzymolysis, standing to room temperature, separating, taking an upper-layer plukenetia volubilis linneo emulsion, carrying out pulsed electric field treatment, freezing and thawing, and centrifuging to obtain yellow and transparent plukenetia volubilis linneo oil. The method comprises the following steps: treating a plukenetia volubilis linneo emulsion formed in an aqueous enzymatic method system in a pulsed electric field static treatment chamber, controlling the electric field intensity at 3.5-8.5 kV / cm, immediately transferring the emulsion treated by the electric field into a refrigerator at-20 DEG C, freezing for 4-8 hours, unfreezing at room temperature, and centrifuging to obtain upper grease. The obtained sacha inchi oil is high in yield and good in nutritional quality, and has the advantages of being short in demulsification period, efficient in oil-water separation and the like.

The present application relates to a kind of demulsifier for oily wastewater and its preparation method, belong to oily wastewater treatment technical field.The raw material component of the demulsifier includes 15-25wt% iron salt, 10-20wt% aluminum salt, 5-10wt% auxiliary salt and the balance deionized water;Auxiliary salt is the complex system of magnesium salt and zirconium salt;The demulsifier is complexed into intermediate by its raw material component, then polymerized at the temperature of ≤30 ℃.The synergistic effect of iron ion, aluminum ion, magnesium ion and zirconium ion, the prepared demulsifier keeps the oil removal rate at 95% or more in the range of temperature 5-40 ℃, salinity 0.5%-5%, pH 4.0-10.0, COD removal rate is more than 85%, and the performance stability is significantly better than traditional demulsifier, with high demulsification efficiency, low sludge yield, strong adaptability, green environmental protection, low cost and wide application scenarios, with high market value.

The utility model relates to crude oil separation technical field, concretely relates to a crude oil high frequency demulsification separation device, include: feed system, feed system includes mixing tank, one side of feed system is provided with high frequency demulsification unit, high frequency demulsification unit includes demulsification tank, the top fixedly connected with high frequency power supply of demulsification tank, the inside of demulsification tank is provided with electrode plate, the other side of high frequency demulsification unit is provided with gravity separation unit, gravity separation unit includes gravity sedimentation tank, the inside even fixedly connected with a plurality of inclined plate of gravity sedimentation tank, the other side of gravity separation unit is provided with cyclone separation unit, and cyclone separation unit includes cyclone separator, through the setting of high frequency demulsification unit, gravity separation unit and cyclone separation unit, can quickly destroy crude oil emulsification structure, improve demulsification efficiency, combine gravity sedimentation and cyclone separation technology, realize the depth separation of crude oil, water and impurity, and further greatly improved the separation effect.

The invention discloses a treatment method of retainer cleaning water and mold processing cutting fluid, and belongs to the technical field of industrial sewage treatment. The mixed sewage of holder cleaning water and mold processing cutting fluid is subjected to first filter pressing and then conveyed into a sewage pool to adjust the pH value, the sewage oil removal agent accounting for 70% of the total weight of the sewage oil removal agent and the sewage are synchronously conveyed into a stirring cylinder to be stirred, then second filter pressing is conducted, and the sewage oil removal agent is obtained. Adding the rest 30% by weight of the sewage oil removal agent into a second stirring cylinder for treatment, then carrying out third filter pressing, conveying the sewage oil removal agent into a sedimentation tank, adding a bactericide, and standing in the sedimentation tank to obtain treated water. According to the process, the sewage and the sewage oil-removing liquid medicine are simultaneously input into the stirring cylinder, so that the contact area of the liquid medicine and the sewage can be increased, the sewage oil-removing liquid medicine can play a role in the conveying process, and the sewage treatment efficiency is improved.

The present application relates to the technical field of oilfield chemistry, in particular to a salt-tolerant demulsifier system, application and a high-salt shale oil produced liquid treatment method.The salt-tolerant demulsifier system comprises a salt-tolerant block polyether main agent, a zwitterionic surfactant and an organic acid complexing agent; the salt-tolerant block polyether main agent is a star-shaped block copolymer with polyethylene oxide as a hydrophilic head, polypropylene oxide as a hydrophobic chain and polyglycerol or pentaerythritol as a starter; and the zwitterionic surfactant is a sulfobetaine surfactant.The salt-tolerant demulsifier system has excellent salt tolerance, high demulsification efficiency, fast speed and clean water quality; and the high-salt shale oil produced liquid treatment method has wide applicability and good effects on not only high-salt shale oil but also conventional high-salt crude oil produced liquid.

The utility model belongs to the field of essential oil production, in particular relates to a quick demulsification and phase separation device for essential oil, and aims to solve the problems that the dissolving efficiency is increased due to the fact that steam is used for heating treatment, but the steam is relatively single in use effect and only can be used for heating independently, and the practicability is reduced, so that the quick demulsification and phase separation device for essential oil comprises a demulsification tank, the demulsification tank comprises a tank body and a tank cover mounted at the top of the tank body, a feeding end is arranged on one side of the top of the tank cover, and a discharging end is arranged at the bottom of the tank body; the ultrasonic device is used for demulsifying raw materials, the ultrasonic device is installed at the top of the tank cover, after feeding is conducted through the feeding end, demulsification is achieved through ultrasonic waves by means of the ultrasonic device, and the fluidity of the raw materials can be improved on the basis that only heating can be conducted originally through the steam assembly; and the final demulsification efficiency is further improved.

This invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and its preparation method, relating to the field of petrochemical technology. The key technical points include: using cashew nut shell powder, pentaethylene hexamine, and bisphenol F in a specific molar ratio as an initiator, and preparing a composite initiator via formaldehyde condensation; incorporating propylene oxide and ethylene oxide through staged block copolymerization to form a polyether backbone; introducing fluorinated epoxy monomers for end-fluorination modification; and finally, performing chain extension and crosslinking with adipic acid and epichlorohydrin to obtain a demulsifier with a molecular weight of 8000~12000 Da, a fluorine content of 5.5~6.5 wt%, and a PDI ≤ 1.3. The effect is that through the synergistic effect of the composite initiator, the superhydrophobic penetration of the fluorinated block, and precise molecular weight control, efficient demulsification at low temperatures is achieved, improving demulsification efficiency and reducing dosage, solving the problems of low-temperature failure and easy emulsification of traditional demulsifiers, and adapting to the low-temperature operating conditions of oil and gas gathering and transportation.

The invention relates to a bifunctional low-temperature demulsifier prepared by modifying polysuccinimide, the low-temperature demulsifier is an amphiphilic polysuccinimide derivative obtained by one-step reaction of polysuccinimide and primary amine, and the main chain of the amphiphilic polysuccinimide derivative is a strong-polarity polyamide group. According to preparation and application of the difunctional low-temperature demulsifier prepared through polysuccinimide modification, aiming at the problems that an existing reverse demulsifier is low in demulsification efficiency, long in time and high in temperature and a product has certain toxicity, a fully-degradable high-polarity low-temperature directional demulsifier is designed with environment-friendly high-molecular polysuccinimide as a raw material and primary amine as a modification reagent; the polysuccinimide is wide in source and low in price, the polysuccinimide reacts with primary amine, the demulsification efficiency of the agent is improved by adjusting the aromaticity of the demulsifier, the water purification capacity of the agent is improved by optimizing the chain length of side chain alkyl, the modified polyamide demulsifier is a green polymer, and the demulsification efficiency is improved. And the application prospect is promising.

This invention relates to the field of petroleum processing aids technology, and discloses a crude oil demulsifier and its preparation method. The crude oil demulsifier prepared by this invention differs from traditional demulsifiers that use linear polyethers as the main component. It is prepared by surface modification of hyperbranched polyether with Fe3O4@MOF-Cu nanomaterials, followed by mixing with water and methanol. This demulsifier not only achieves efficient demulsification during crude oil demulsification but can also be recycled, reducing demulsification costs.

This invention discloses a novel cross-linked polymeric demulsifier and its preparation method. Specifically, it uses a polyoxyethylene / polyoxypropylene block polyether demulsifier as a base, which undergoes esterification of terminal hydroxyl groups, followed by a Michael addition reaction with ethylene amine to obtain the cross-linked polymeric demulsifier. This novel cross-linked polymeric demulsifier exhibits low organochlorine residue, a simple production process, mild reaction conditions, controllable molecular weight, and uniform molecular weight distribution. In application, it offers significant advantages such as high demulsification efficiency, rapid demulsification speed, low dosage, and low demulsification temperature, as well as broad applicability to various crude oil emulsions.

The present application relates to a kind of sea urchin type demulsifier with glucose as raw material and preparation method and application, the preparation method includes the following steps: S1, with glucose as raw material, prepare carbon ball containing hydroxyl on surface by hydrothermal reaction;S2, maleic anhydride is grafted to the surface of carbon ball by esterification reaction, and intermediate product is obtained;S3, by thiol-alkene click reaction, alkyl mercaptan is grafted to intermediate product, and demulsifier is obtained.The demulsifier of the present application has a hydrophilic center core and several hydrophobic branches, has high demulsification efficiency, the light transmittance of water phase after demulsification is high, and emulsion oil removal rate can reach more than 99%.

The invention discloses a demulsifier and a preparation method thereof, and belongs to the technical field of demulsifiers. The preparation method of the demulsifier comprises the following steps: adding ferric trichloride hexahydrate, sodium acetate and polyethylene glycol into a polyol solvent, uniformly mixing at 60-80 DEG C, then adding bentonite, carrying out ultrasonic dispersion for 20-40 minutes, then reacting at 180-250 DEG C for 20-30 hours, washing and drying; carrying out ultrasonic dispersion on the obtained magnetic bentonite in an organic solvent for 15-30 minutes, adding a silane coupling agent, stirring for 6-10 hours at 70-85 DEG C, collecting a magnet, washing and drying; and carrying out ultrasonic dispersion on the obtained silanized magnetic bentonite in an organic solvent for 15-30 minutes, dissolving an acrylate copolymer demulsifier and a sulfonate demulsifier in the organic solvent, then adding 4-dimethylaminopyridine, carrying out ultrasonic dispersion for 10-20 minutes, then adding into a silanized magnetic bentonite solution, stirring for 4-6 hours at 85-110 DEG C, and carrying out magnet collection, washing and drying, so as to obtain the water-soluble magnetic bentonite. The demulsifying agent is obtained. The demulsifier is safe and environment-friendly, and can repeatedly and efficiently realize demulsification.

The invention discloses a flocculating agent for machine cleaning wastewater of a pesticide missible oil preparation and application of the flocculating agent. The flocculating agent is prepared from the following components in parts by weight: 50-60 parts of an inorganic flocculating agent, 35-45 parts of an organic flocculating agent, 8-12 parts of a demulsification aid and 4-6 parts of a pH regulator. The flocculant disclosed by the invention is good in demulsification effect, high in COD removal rate, high in treatment efficiency, strong in floc stability, economical in cost and wide in wastewater adaptability, and solves the problems of poor demulsification effect, low COD removal rate, large flocculant dosage and the like when an existing flocculant is used for treating pesticide missible oil preparation cleaning wastewater.

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 provides a crude oil pretreatment demulsifier, and belongs to the technical field of oilfield chemical engineering, and the crude oil pretreatment demulsifier comprises the following steps: S1, cutting feather fibers into small sections, carrying out ball milling treatment to obtain nano feather fibers, carrying out surface treatment with hydrofluoric acid, immersing the nano feather fibers subjected to surface treatment into a hydrogen peroxide solution, heating and stirring, and carrying out vacuum drying to obtain a crude oil pretreatment demulsifier; hydrophilic modified nano feather fibers are obtained; and S2, mixing tetraethoxysilane with ethanol, adjusting the pH value to 7-9, stirring at normal temperature to generate silica sol, immersing the hydrophilic modified nano feather fibers into the silica sol, continuously stirring, drying and curing to obtain the crude oil pretreatment demulsifier. The crude oil pretreatment demulsifier provided by the invention realizes the purpose of efficient demulsification.

The present application relates to a kind of demulsifiers and its preparation method and application.The preparation method includes the following steps: (1) glycerol and p-hydroxy isophthalic acid are mixed, esterification is carried out, and branched prepolymer is obtained;(2) branched prepolymer is mixed with L-arginine, and amide reaction is carried out, and branched body is obtained;(3) branched body is mixed with carboxyl-terminated agent, and amide reaction is carried out, and the demulsifier is obtained.The demulsifier prepared by the specific preparation method can realize the efficient demulsification of high-salt crude oil emulsion, has the advantages of low toxicity, high demulsification efficiency, wide pH range, biodegradable.

The invention discloses an ionic compound, a demulsifier as well as a preparation method and application of the demulsifier. The preparation method of the ionic compound comprises the following steps: carrying out ring-opening reaction on glycerol triglycidyl ether and N, N-dibutyl ethanolamine to obtain a ring-opening product; and carrying out ionization reaction on the ring-opening product and halogenated hydrocarbon in a solvent A. The prepared ionic compound is used as a demulsifier for a crude oil emulsion, and has the characteristics of high demulsification efficiency, low demulsification temperature and high demulsification rate; in addition, the preparation method provided by the invention is simple in steps, low in raw material cost and suitable for industrial production.

The invention relates to the technical field of demulsifiers, and particularly discloses a preparation method of a demulsifier for a desulfurization system. The preparation method of the demulsifier for the desulfurization system comprises the following steps: firstly, preparing high-molecular polyether, then carrying out cross-linking reaction on the high-molecular polyether, and finally, adding the modified hollow porous silicon dioxide tube and uniformly mixing to obtain the demulsifier for the desulfurization system. The demulsifier for the desulfurization system has the advantages of high dehydration rate and good demulsification effect.