12results about How to "Good demulsification effect" patented technology

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 relates to a modified hydrogen-silicon-containing modified oil polyether demulsifier and a preparation method thereof, and belongs to the technical field of oil field chemicals. The preparation method comprises the following steps: carrying out polymerization reaction on modified polyether taking an amino-modified molybdenum disulfide nanosheet as an initiator, hydrogen-containing silicone oil block polyether modified by a silane coupling agent and quaternary ammonium salt containing a furan structure under the action of ammonium persulfate and a silicon-containing reducing agent to form a high-molecular-weight inorganic hybrid polymer composite structure; the surface activity can be further improved, and the demulsification effect is enhanced. The furan ring, quaternary ammonium salt, organic silicon, block polyether and molybdenum disulfide nanosheets in the molecular structure play a role together, so that the demulsifier is easier to dissolve natural emulsifiers such as colloid, asphaltene and solid powder adsorbed on an oil-water interface, and an interfacial film formed by the natural emulsifiers is prevented from hindering water drop coalescence; and the demulsifying agent can more easily and rapidly penetrate through an emulsion external phase to be dispersed on an oil-water interface so as to play a demulsification role.

The application discloses a kind of pure natural demulsification granules preparation method and its application method, comprising the following steps: selecting dry lotus, the lotus is segmented, the segmented lotus is sent into pulverizer and broken into powder, the final powder is screened by screen mesh, the raw material of powder passing through screen mesh is obtained, lotus powder is obtained, finally lotus powder is placed in oven and dried, it is demulsification granule, the method utilizes the composition characteristics of dry lotus powder with oil-water amphiphilic, the hydrophobic part of lotus can be combined with the oil-loving group in surfactant, thereby causing the rupture of emulsion interface, so that oil droplets in rolling oil emulsion cannot be stably dispersed in water phase, the balance of oil phase and water phase in emulsion is destroyed, and finally the effect of demulsification is achieved, and after demulsification is completed, the property of plant granule is not easy to change, even if oscillation, it is also not easy to emulsify again, and the use time of the whole demulsification is shorter, and the solution is stable.

The application belongs to the technical field of demulsification dehydration, and discloses a preparation method of a demulsifier and application of the demulsifier in asphalt mixture. The preparation method of the demulsifier comprises the following steps: reacting acidified clay minerals with gamma-methacryloxypropyltrimethoxysilane to obtain modified clay minerals; reacting the modified clay minerals with triethylenetetramine to obtain polyamine-based clay minerals; and reacting the polyamine-based clay minerals with bromohexadecane to obtain the demulsifier. The demulsifier is a polyquaternary ammonium salt type cationic demulsifier. Through the positive charges of cations contained on the surface of the clay minerals and quaternary ammonium salts, the double electric layer structure of the surface of anionic emulsified asphalt is changed, the thickness of the double electric layer is compressed, the electrostatic repulsion between the emulsified asphalts is reduced, and the demulsification effect is good. When the asphalt mixture is prepared, the adhesion of asphalt particles to aggregates can be effectively promoted, the water in the asphalt mixture can be effectively discharged, and the solidification and molding of the asphalt mixture can be accelerated.

This application relates to the field of demulsifiers, and more specifically, to an oil sludge demulsifier, its preparation method, and its application. An oil sludge demulsifier comprises the following components in the following mass ratio: 20-35 parts of a surfactant complex, 7-12 parts of an alkyl sulfate sodium cosolvent, 0.6-1.8 parts of a stabilizer, and 48-55 parts of water; wherein the surfactant complex comprises hyperbranched polyamide amine and polyether amine modified magnetic nanoparticles. This oil sludge demulsifier improves upon the problems of existing demulsifiers, such as low dehydration capacity, slow dehydration speed, poor demulsification effect, and low oil content, thereby improving the demulsification performance and dehydration efficiency, and achieving effective separation of oil sludge.

The invention discloses a composite demulsifier for dehydrating oily scum and a process for treating oily scum, wherein the composite demulsifier is prepared by the following method: S1, preparing porous aluminum-doped manganese dioxide; S2, loading ruthenium-doped carbon dots on Al-MnO2 by a one-pot hydrothermal method to obtain a composite demulsifier. Under the combined action of the composite demulsifier provided by the invention and ultrasound, demulsification with multiple physical and chemical effects can be achieved, thereby promoting efficient dehydration of oily scum. The process for treating oily scum of the invention first alkalizes the scum, and then demulsifies and layers the scum wastewater by combining the composite demulsifier with ultrasound. Under the action of ultrasound, the organic components in the water are degraded by the strong oxidizing ability of the composite demulsifier; the oily scum is separated by three phases, and the oil phase product is recovered, and finally the resource treatment of the scum is achieved, which can reduce environmental pollution, recycle useful resources, and form obvious economic and environmental benefits.

The invention discloses a filter pressing treatment process for oily sludge, and belongs to the technical field of oil and gas field waste treatment. Comprising the following steps: feeding the oily sludge into a preheating tempering tank, adding alkyl glycoside and amorphous silicon powder, and carrying out gradient heating and stirring to obtain pretreated sludge; then feeding the pretreated sludge into a mixing reactor, adding a composite modified filter aid prepared from hydrophobic modified diatomite, quaternized modified chitosan, aminated modified graphene oxide and the like, and performing stirring-ultrasonic treatment to obtain demulsified sludge; feeding the demulsified sludge into a filter press which is pre-coated with a porous non-hydrophobized diatomite pre-coating layer and is provided with double-layer breathable gradient aperture filter cloth, and finally, performing low-pressure material distribution and gradient boosting filter pressing, and after filter pressing, introducing instantaneous high-pressure nitrogen to perform micro back-flushing and cake unloading, and purging the filter cloth to complete the operation. According to the process, an oil-water-silicon fine particle emulsification system can be effectively broken and removed, the problems of high-altitude low-temperature agglomeration and system microphase separation are relieved, graded interception and blockage prevention are realized, and the filter pressing efficiency and stability are improved.

The present application relates to the technical field of petroleum chemical industry, and particularly relates to a biochemical composite demulsifier, which comprises a microbial demulsifier and a chemical demulsifier, wherein the microbial demulsifier is prepared from a fermentation liquor of pseudomonas aeruginosa, and the chemical demulsifier is a mixture of trimethylolpropane polyether and epoxy polyether, and has the advantages of excellent demulsification effect and low cost.

The application provides a high-efficiency treatment and sludge concentration device for fracturing flowback fluid, which comprises an electric flocculator, a settling cylinder and a cyclone pipe. The electric flocculator comprises a plurality of flocculation tubes arranged side by side and connected in series, a U-shaped joint connected between adjacent flocculation tubes, and a power supply for supplying power to the flocculation tubes. The settling cylinder is used for separating oil, water and mud in the fracturing flowback fluid. The cyclone pipe is connected to the outlet end of the electric flocculator and extends into the settling cylinder along the tangent direction of the cross section of the settling cylinder. The electric flocculator and the settling cylinder are arranged. The electric flocculator breaks the emulsification of the fracturing flowback fluid, and flocculates the oil droplets, suspended impurities and solid impurities in the fracturing flowback fluid into flocs, so that the oil, water and mud can be separated by the subsequent settling cylinder.

The present invention relates to the technical field of asphalt road materials, and specifically to a high early strength emulsified asphalt cold recycled mixture and a preparation method thereof, wherein the mixture is composed of the following components, by weight: 3.2 to 4.5 parts of emulsified asphalt, 75 to 85 parts of waste asphalt mixture, 5 to 8 parts of new aggregate, 0.5 to 3.0 parts of mineral powder, 0.5 to 2.5 parts of cement, 2.5 to 5 parts of water, and 5 to 35 parts of pretreated steel slag. The present invention also discloses a method for treating the pretreated steel slag and a preparation method of the mixture. The high early strength emulsified asphalt cold recycled mixture of the present invention uses pretreated steel slag to solve the problem that the steel slag expands when exposed to water and affects the road performance of the mixture, and can also consume waste solid and waste steel slag to achieve the purpose of resource recycling, and accelerates the emulsified asphalt demulsification by heating with a microwave transmitter to achieve the purpose of improving the early strength of the mixture.

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 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.