10results about How to "Efficient demulsification" patented technology

The invention discloses a tree-shaped heavy oil demulsifier with magnetic response as well as a preparation method and application thereof. The demulsifying agent comprises composite magnetic nano particles, the composite magnetic nano particles are provided with magnetic particle inner cores and polymers coated on the outer surfaces of the magnetic particle inner cores, the magnetic particle inner cores are modified superparamagnetic ferroferric oxide nano particles, and the polymers are alkyl phenolic resin polyoxyethylene polyoxypropylene ether. Rapid demulsification of the emulsion with the magnetic response effect at the low temperature is successfully achieved, the using amount of magnetic particles is small during demulsification, and the demulsification process is environmentally friendly, efficient and low in cost.

The present application relates to oil and gas field development and environmental protection technical field, especially an aging oil demulsification treatment method, comprising: mixing fly ash and sodium hydroxide, then calcining, acid leaching, then mixing with oily sludge and ferroferric oxide, reduction reaction, mixing the reduction reaction product with 3-mercaptopropyl triethoxysilane, modification reaction, to obtain magnetic adsorbent; mixing aging oil, partial phosphate and water, stirring, standing and separating, to obtain pretreated aging oil; adding magnetic adsorbent, complexing agent, wetting reverse agent and demulsifier to the pretreated aging oil, stirring, then microwave irradiation treatment, magnetic separation, vortex separation and centrifugal dewatering, to obtain purified oil. The present application removes FeS particles by magnetic adsorbent, combines with multi-assistant component synergistic demulsification and multi-field coupling physical separation, destroys the stable emulsification system of aging oil, and the process is efficient, suitable for industrial demulsification treatment of high stability aging oil.

The utility model provides a kind of purification and recycling device of cutting fluid, it is specifically related to cutting fluid recycling technical field, to solve the defect of cutting fluid purification technology in prior art.The device includes the pretreatment unit, demulsification unit and separation unit sequentially communicated along cutting fluid processing path;The inlet of pretreatment unit receives cutting fluid to be handled, and outlet is communicated with the inlet of demulsification unit;Demulsification unit is closed cavity, and the inside of closed cavity is equipped with the flow guide mechanism for forming spiral flow field and the aeration mechanism for introducing gas, and outlet is communicated with the inlet of separation unit;Separation unit includes multiple separation chambers connected in series, and its final outlet is used to output purified cutting fluid;Further including control unit.The device is synergistically designed by staged filtration, intensified demulsification, gradient separation and intelligent control, realizes the efficient removal of metal particles and emulsified oil in cutting fluid, and the oil content and granularity of purified cutting fluid meet the requirements of mechanical processing reuse.

The invention relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifier for oilfield sewage treatment and a preparation method of the composite water clarifier. The invention relates to a composite water clarifier for oilfield sewage treatment. The composite water clarifier is prepared from the following raw materials: dual modified polyacrylamide, an imidazoline quaternary ammonium salt grafted copolymer, a scale inhibitor, an adsorbent, dodecyl dimethyl betaine, a coagulant aid and deionized water, the double modified polyacrylamide is obtained by performing double modification on polyacrylamide by using 2, 3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer; the imidazoline quaternary ammonium salt grafted copolymer is a grafted copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropanesulfonic acid. The composite water clarifier can be used for treating high-salt and high-oil sewage generated in the middle and later periods of oilfield exploitation, has the advantages of being high in salt resistance, thorough in demulsification and good in flocculation effect, can efficiently remove oil and suspended solids, ensures that effluent reaches the standard, and meets the complex sewage treatment requirements of an oilfield.

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 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.

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.

The invention belongs to the technical field of sewage treatment, and particularly relates to a demulsifier for oil-containing sewage treatment as well as a synthesis method and application of the demulsifier. The synthesis method comprises the following steps: adding tributylaminomethylsilane, potassium hydroxide and 4-chloro-1-butanol into a reactor, stirring at room temperature, heating, and carrying out heat preservation reaction; transferring the mixture into a high-pressure reaction kettle, adding potassium hydroxide again, vacuumizing, filling nitrogen, repeating for three times, then slowly heating, stopping vacuumizing, introducing epoxypropane, heating and carrying out heat preservation reaction, introducing ethylene oxide, heating and carrying out heat preservation reaction when the pressure does not change any more, and cooling the system to room temperature by adopting circulating cooling water when the pressure does not change any more, so as to obtain a finished product. And adjusting to obtain the product demulsifier. The demulsifier disclosed by the invention has the advantages of wide raw material sources, simple synthesis process and low-concentration efficient demulsification.

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 application relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifying agent for oilfield sewage treatment and a preparation method thereof. The composite water clarifying agent for oilfield sewage treatment is prepared from the following raw materials: double-modified polyacrylamide, imidazoline quaternary ammonium salt graft copolymer, scale inhibitor, adsorbent, dodecyl dimethyl betaine, coagulant aid and deionized water; the double-modified polyacrylamide is obtained by double modification of 2,3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer on polyacrylamide; and the imidazoline quaternary ammonium salt graft copolymer is a graft copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropane sulfonic acid. The composite water clarifying agent can be used for treating high-salt and high-oil sewage generated in the middle and late stages of oilfield exploitation, has the advantages of strong salt resistance, complete demulsification and good flocculation effect, can efficiently remove oil and suspended solids, ensures that the effluent meets the standards, and meets the complex sewage treatment requirements of oilfields.