47results about How to "Achieve demulsification" patented technology

Disclosed is a thick granulating grease intercepter with filament agglomeration, which leads oil dripping to be capable of floating upward in time along a filtering layer by lifting of bubbles through a reasonable filtering layer framework, thereby achieving double goal of thick granulating and filtering degreasing. The grease intercepter comprises a degreasing reactor barrel (1), an inflowing and overflowing unit (2), a modified fiber bundle assembly (3), a water-yielding and backwash unit (4), a degreasing barrel connector (5) and a sample port (6), wherein the degreasing reactor barrel (1) is divided into an upper portion and a lower portion which are integrated via the degreasing barrel connector (5), the modified fiber bundle assembly (3) is arranged in the degreasing reactor barrel (1), the sample port (6) is arranged on the side surface of the degreasing reactor barrel (1), and the upper portion and the lower portion of the degreasing reactor barrel (1) are respectively provided with the inflowing and overflowing unit (2) and the water-yielding and backwash unit (4). The upper portion of the degreaser feeds water, the lower portion of that aerates, thereby achieving the agglomeration and thick granulating of the oil dripping in oily wastewater and reaching water-oil separating.

The invention discloses a preparation method of an in-situ nano-emulsifier and an oil reservoir application method, the in-situ nano-emulsifier is successfully prepared, the property of the in-situ nano-emulsifier is weakly hydrophobic and oleophylic nano colloidal particles, and the nano-emulsifier provided by the invention is directly dispersed by injecting water into an oil field, is slightly higher than the injected water in viscosity, and is high in injectivity; under the condition that the water saturation of an oil reservoir is 25-85%, water-in-oil Pickering emulsion with stable dynamics is generated through the reverse phase bending effect of an oil-water interface and crude oil, the water-in-oil Pickering emulsion does not generate phase change in the range of the water saturationof the oil reservoir, and the viscosity of the Pickering emulsion is in direct proportion to the water saturation of a stratum and is in inverse proportion to the oil saturation. The viscosity of theemulsified liquid is 1.5-20 times that of crude oil, the viscosity of the emulsified liquid in a high-permeability area is higher than that of the emulsified liquid in a low-permeability area, the fluidity can be adaptively controlled, the displacement leading edge can be stabilized, intelligent oil displacement is achieved, and the crude oil recovery rate is increased to the maximum extent.

The invention discloses an integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate. The integrated disposal of the waste emulsion liquid, electroplating wastewater and landfill leachate can be implemented by utilizing demulsification, oxidation pre-treatment and biological treatment. According to the integrated disposal technology for waste emulsion liquid, electroplating wastewater and landfill leachate, provided by the invention, the demulsification of various waste emulsion liquid with high COD can be implemented, the waste emulsion liquid, the electroplating wastewater and the landfill leachate can be disposed in the same disposal facility to reach the emission standard, the equipment is compact, and the investment is low.

The invention discloses a preparation method of a magnetic nanometer water treatment agent for oil field sewage. The preparation method includes firstly, soaking magnetic nanometer particles of Fe3O4 with water while regulating pH to 5-7 and then carrying out ultrasonic dispersion to obtain an aqueous solution containing magnetic nanometer particles of Fe3O4; stirring the aqueous solution containing magnetic nanometer particles of Fe3O4 in a container, placing the container in constant-temperature water bath for holding temperature, gradually dropwise adding sodium oleate solution, after that, continuing to stir for 20 to 40 minutes, and cooling the solution to the temperature of 45 to 55 DEG C to obtain a mixture; finally, adding block polyether modifier solution in the mixture while stirring at the temperature of 45-55 DEG C for 0.5 to 2 hours so as to obtain the magnetic nanometer water treatment agent. The water treatment agent has the advantages such as flocculation, demulsification and easiness in magnetic separation. The water treatment agent can be recovered so that consumption of the water treatment agent is lowered and water treatment cost is reduced.

The invention relates to an oil-gas field oil-containing sludge treatment method. According to the method, the used oil-containing sludge treatment apparatus comprises a microwave reaction chamber, awaveguide pipe, a microwave generator and a power source; the stable emulsifying state of oil-containing pollution is destroyed by using a microwave catalytic oxidation method, and part of residual chemical agents in the oil-containing sludge can be subjected to a chemical reaction, such that demulsification and viscosity breaking are achieved, and the three-phase separation of oil, water and mudsand is achieved; the pollutants in the oil-containing sludge are mainly transferred into a water phase, the water is discharged into a sewage treatment system so as to be treated, and the crude oil is recycled; and the mud sand phase has extremely low oil content and extremely low content of other pollutants, can be used for paving various internal roads for oil field production, well sites and solid waste yards, and can be used as natural pit filling materials. According to the present invention, the method has advantages of simple treatment process, low treatment cost, safety, environmentalprotection, high recovery rate of crude oil, resource utilization of mud sand, and the like.

The invention provides a treatment method of wastewater containing rubber latex. The method comprises a step that the wastewater is frozen and is then thawed. With the method provided by the invention, emulsion breaking can be effectively realized out upon the rubber-latex-containing wastewater with relatively low rubber latex content. With the method, solid substances in opalescent wastewater can be flocculated, water quality can be clarified, and wastewater can be decolorized. Therefore, subsequent wastewater treatment can easily be carried out upon the clarified liquid. No agent is adopted according to the invention, such that no secondary pollution is caused. Therefore, the method is environment-friendly.

The invention relates to an amino-rich magnetic nanoparticle demulsifier preparation and an application method thereof in treating a waste emulsion. Magnetic nanoparticle demulsifier makes polyethyleneimine branched molecules fixed to the surface of a magnetic core, and a large number of effective action sites are provided for the emulsion. The method for treating the waste emulsion particularly comprises the steps that a magnetic nanoparticle demulsifier suspension is added in the waste emulsion, the mixture is fully mixed to be uniform, and oil-water separation is conducted by means of a magnetic field. By means of the simple method, the novel magnetic nanoparticle demulsifier is synthesized, efficient and rapid demulsification of emulsions with different compositions and properties is achieved, the operation condition is simple, the application range is wide, and industrial application is easy. The treatment scheme is particularly suitable for the waste emulsion generated in the machining process.

The invention discloses a Pickering emulsion with a CO2/double-response surfactant and a preparation method of the Pickering emulsion, which belong to the technical field of oil and gas field chemical agents. The preparation method comprises the following steps of firstly preparing carboxyl modified nano silicon dioxide particles, then preparing a CO2/redox dual-responsive surfactant, finally mixing the carboxyl modified nano silicon dioxide particles and the CO2/redox dual-responsive surfactant according to a certain proportion, adding the mixture into an oil phase and a water phase according to a certain proportion, and emulsifying through a vortex oscillator at a certain rotating speed to obtain the product. The emulsion has good stability, when the emulsion does not need to be kept in a stable state any more, the stable state of the emulsion can be broken and demulsification can be achieved only by introducing CO2 or adding an oxidizing agent into an emulsion system, on the other hand, the reversible emulsification process can be achieved by introducing N2 or adding a reducing agent into the emulsion, and the stable emulsion is obtained again.

The invention provides a nanofiber membrane, a preparation method thereof and application of the nanofiber membrane to oil-water separation. The nanofiber membrane comprises a cross-type nanofiber membrane body, and polytetrafluoroethylene nanoparticles for surface modification of the cross-type nanofiber membrane body. According to the nanofiber membrane, through the joint effect of a three-dimensional topology structure of the cross-type nanofiber membrane body and surface chemical component modification, a water-in-oil emulsion or an oil-in-water emulsion can be broken, and thus efficient oil-water separation is achieved; the membrane can be reused for multiple times, and the oil-water separation efficiency is stable; and experimental results show that the oil-water separation nanofibermembrane has no selectivity for the oil-in-water emulsion and the water-in-oil emulsion, the water-in-oil emulsion and the oil-in-water emulsion can both achieve the separation efficiency of 99% or above, and the separation efficiency is maintained at 98% or above after repetition for eight times.

The invention discloses a method for demulsifying and extracting grease from oil-containing algae or fungal cell wall-broken liquid. The pH of the wall-broken liquid is adjusted under the vacuum condition, a proper amount of inorganic salt is added, the stirring rotating speed and temperature in different time periods are regulated and controlled, oil, water, protein and fermentation extracellularproducts in the wall-broken liquid are completely separated, and the extraction yield of intracellular grease of algae and fungal cells is increased to 90%-96% from 85%-90%. When the method is used for demulsifying oil-containing emulsion, solvent residues caused by extraction and demulsification with an organic solvent and unsaturated fatty acid oxidation caused by high-temperature solvent recovery can be effectively avoided, meanwhile, various physicochemical indexes of the extracted crude grease are better, the quality of the crude grease is better, and the green, non-toxic and residue-free effects in the product extraction process are achieved.

The invention relates to a supergravity sewage treatment device. Firstly, a filter and a membrane component are utilized for carrying out pretreatment on electro-desalting sewage, then alkali liquor in an alkali liquor tank is mixed with the sewage treated by the filter and the membrane component, the mixture enters a supergravity machine through a fluid channel of the supergravity machine, by virtue of a unique supergravity machine structure and a rotating channel which is formed between a hollow rotating shaft and a sleeve, is communicated with a filler region and is provided with a helical channel, spinning entrance of fluid through the rotating channel after passing the hollow rotating shaft is realized, intensive mixing of the sewage in the fluid and the alkali liquor is realized under the actions of a rotation acting force, a shearing force and a spinning acting force of the fluid at the moment that the fluid enters the filler region, and sufficient degree of liquid-liquid contact is improved, so that removal of the alkali liquor on oily substances and COD in the sewage is realized.

The invention discloses a CO2/N2 switching type double-circulation extraction process. The process comprises: mixing oil-containing solid waste and organic acid, separating to obtain mixed liquid A and solid waste, adding a polyetheramine aqueous solution into the mixed solution A, separating to obtain an oil phase and a mixed solution B, introducing CO2 into the mixed solution B, protonating, separating to obtain an organic acid and a mixed solution C, returning the organic acid to the oily solid waste, introducing N2 into the mixed solution C, deprotonating to obtain CO2 and a polyetheramineaqueous solution, returning the polyetheramine aqueous solution to the mixed solution A, and returning CO2 to the mixed solution B, wherein the temperature control range of the whole extraction process is 30-70 DEG C. The method has the advantages that (1) the organic acid aqueous solution and the polyether amine aqueous solution are combined for use, so that the purpose of oil removal is achieved, the organic acid aqueous solution and the polyether amine aqueous solution are recycled, the method is environment-friendly and safe to operate, and the oil removal cost is saved, the recovery rateof oil products is high, other impurities are not introduced, and the recovery rate of conventional oil products, especially heavy oil products, can reach 90% or above.

The invention relates to biological asphalt and a preparation method thereof. The preparation method comprises steps as follows: 1) inorganic salt is blended in biological oil and mixed uniformly; crude glycerin is added, and the mixture is mixed uniformly; 2) a product obtained in the step 1) is distilled under the normal pressure, and light components and mixed components comprising glycerin andlignin pyrolysis products are separated; 3) water is added to the mixed components, the mixture is mixed uniformly, left to stand and filtered, a water-glycerin mixed phase is removed, and a crude lignin pyrolysis product is obtained; 4) the crude lignin pyrolysis product is heated to the constant weight state, and the biological asphalt is obtained; the water-glycerin mixed phase is distilled under the normal pressure, and separated glycerin is recycled. The lignin pyrolysis product can be effectively separated through pretreatment of biomass pyrolysis oil, and meanwhile, the separation process of conventional distillation is improved, so that the asphalt components in the biomass pyrolysis oil can be sufficiently separated and have excellent usability and ageing resistance.

The invention relates to a method for treating wastewater containing rubber latex, wherein the method comprises the steps of: mixing and standing the wastewater, water soluble alkali substances and water soluble metal halides. The method provided by the invention can effectively achieve demulsification of the wastewater containing the rubber latex with lower content, so that the wastewater is in milky wastewater layering to obtain a supernatant liquid layer, and the wastewater is decolored to facilitate the subsequent wastewater treatment of the supernatant liquid, so that the wastewater reaches the emission standard.

The invention provides a soap-free emulsion polymerization method based on a temperature responsive monomer. The method takes a temperature responsive monomer aqueous solution, when a system temperature rises above the lowest critical solution temperature, the monomer is subjected to dehydration phase change, an aggregate is produced in water, the monomer local concentration is increased, and the aggregate is similar to a micelle; in the presence of a water soluble initiator, the monomer is subjected to a polymerization reaction. Under a condition without addition of an emulsifier, the emulsion is formed only by increasing the temperature, soap-free emulsion polymerization is achieved, and emulsion copolymerization with a non-temperature-responsive monomer can be achieved. The method has the advantages that the influence of the emulsifier on the performance of the product can be avoided, and the complex process of removing the emulsifier is also omitted.