64results about How to "Improve oil-water separation effect" patented technology

The invention provides a preparation method of an oil-water separation material, which comprises the following steps: soaking a sponge material in a graphene oxide solution, taking out the obtained sponge material and centrifuging the sponge material, so that a graphene oxide coated sponge material is obtained; and carrying out a reduction reaction on the graphene oxide coated sponge material under the action of a reducing agent so as to obtain the oil-water separation material. The oil-water separation material prepared by using the method provided by the invention is a reduced graphene oxide coated sponge material, is coated with a graphene layer uniformly and tightly and has good rebound resilience and mechanical stability, and the reduced graphene oxide layer provides good hydrophobicity and lipophilicity, therefore, the preparation method disclosed by the invention can be applied to oil-water separation technologies.

The invention discloses modified nano-silica, a PVDF micro-filtration membrane and application of the PVDF micro-filtration membrane. A preparation method of the modified nano-silica comprises the following steps: at first, enabling reaction between nano-silica and an amino silane coupling agent to prepare aminated silica; adding paraffin to prepare paraffin balls of which the surfaces are covered with aminated silica; adding an acid capture agent, and dripping brominated alkyl acyl bromide or brominated alkyl acyl chloride under an ice-water bath condition to obtain a silica initiator; adding a monomer, cuprous bromide and aglucon, and enabling reaction to obtain polymer-grafted silica; and dispersing the product in an alpha-methoxy-omega-carboxyl polyethylene glycol solution, and performing stirring for reaction to obtain the modified nano-silica. Polymer chain segments, easily miscible with PVDF, on the surfaces of the modified nano-silica can fix the nano-silica particles after film forming, so that the stability of a micro-nanostructure on the surface of a film is enhanced, and the hydrophilic modified micro-filtration membrane has very good durability.

The invention provides a method for coating the surface of an underwater oleophobic net film with a nano-material. The method comprises the following steps of carrying out chemical etching on a cleaned and dried stainless wire net film by a chemical etching agent, carrying out ultrasonic cleaning and drying, immersing the stainless wire net film in a cation precipitating agent solution so that chemical modification is realized, taking out the stainless wire net film, carrying out washing by deionized water, carrying out blow-drying by a nitrogen flow, immersing the stainless wire net film in a silicon dioxide dispersion liquid of graphene oxide so that a coating process is realized, taking out the treated stainless wire net film, carrying out washing by deionized water, repeating chemical modification-coating processes multiple times to obtain a coated stainless wire net film, carrying out drying, carrying out calcination at a temperature of 500-550 DEG C in a nitrogen protective atmosphere for 3-4h and carrying out cooling to obtain the stainless wire net film finished product. The method is carried out at a normal temperature, has simple processes and a low cost, utilizes an etching agent and a modified agent with low environment pollution and does not cause secondary pollution. The stainless wire net film has strong corrosion resistance, substantial oil-water separation effects, a long service life and good escherichia coli inhibition effects.

The invention discloses long-life oil jet rotary air compressor oil composition. The composition is prepared from components shown in the specification in percentage by mass.

The invention relates to a screw-type ammonia compressor oil composite, which mainly solves the technical problems of poor resistance to oxidation and short oil product service life of the screw-type ammonia compressor oil composite under the condition that cuprammonia is mixed with ammonia in the prior art. The screw-type ammonia compressor oil composite comprises the following ingredients in parts by weight: 100 parts of mineral base oil and 0.01-2 parts of antioxygen, wherein the antioxygen consists of phenol-type antioxygen and ammonia-type antioxygen; the phenol-type antioxygen is selected from at least one of 4,4-methylenebis (2,6- di-tert-butyl phenol), 3,5-di-tert-butyl-4-hydroxy phenyl acrylic ester or quadri[beta(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester; and the ammonia-type antioxygen is selected from at least one of phenyl-alpha-naphthylamine, alkylating phenyl-alpha-naphthylamine and octyl butyl diphenylamine or alkylating diphenylamine. According to the technical scheme, the problem is favorably solved, and the technical scheme can be used for the industrial production of the screw-type ammonia compressor oil composite.

The invention discloses totally-synthesized DAJ heavy-load screw air compressor oil composition. The composition is prepared from components shown in the specification in percentage by mass.

The invention provides a magnetic response oil-water separation membrane, a preparation method and a self-cleaning method thereof. The magnetic response oil-water separation membrane comprises a basemembrane and magnetic composite nanoparticles chemically grafted on the surface of the base membrane. The oil-water separation membrane provided by the invention can realize self-cleaning of the membrane surface by utilizing periodic transformation of an external magnetic field; meanwhile, the oil-water separation membrane provided by the invention can well prevent oil macromolecules from being incontact with a membrane contact channel to pollute pore channels, so that the oil-water separation membrane can keep a certain membrane flux and stable separation efficiency, and has a good application prospect.

The invention discloses super-hydrophobic/super-oleophilic cotton cloth as well as a preparation method and application thereof. The super-hydrophobic/super-oleophilic cotton cloth is mainly preparedby carrying out polypyrrole coating on an infiltrated FeCl3 solution to form a rough surface of the cotton cloth and using residual FeCl3 on the cotton cloth to react with low surface energy stearic acid to generate hydrophobic ferric stearate precipitate on the surface of the cotton cloth. The water contact angle of the super-hydrophobic/super-oleophilic cotton cloth in air is greater than 150 degrees and the sliding angle is smaller than 10 degrees. In addition, oil is extremely easy to penetrate; the super-hydrophobic/super-oleophilic cotton cloth shows good super-hydrophobicity and super-oleophilic property; besides, the super-hydrophobic/super-oleophilic cotton cloth has the advantages of simple preparation process, lower material cost, greenness and environment friendliness and excellent self-cleaning ability.

The invention discloses an oil composition for a marine diesel engine and a preparation method and application thereof, and mainly solves the technical problem that a demulsifier needs to be added into the oil composition for the marine diesel engine to improve the oil-water separation performance in the prior art. The oil composition for the marine diesel engine is prepared from the following components in parts by mass: 0.1-20 parts of a clearing agent; 0.1-20 parts of a dispersant, 0.6-15 parts of an antioxidant; 0.001-1 part of an anti-foaming agent; an 50-98 parts of base oil. The preparation method of the marine diesel engine oil composition comprises the following steps: adding the clearing agent, the dispersing agent, the antioxidant and the anti-foaming agent into the base oil atthe temperature of 50-60 DEG C, performing stirring for 0.5-3 hours, and performing complete dissolving to obtain the marine diesel engine oil composition. The present invention discloses the application of the marine diesel engine oil composition in marine diesel engines, thereby better solving the problems. The marine diesel engine oil composition and preparation method and application thereof are suitable for industrial application of lubrication of marine diesel engines.

The invention discloses a preparation method of a bacterial cellulose membrane for oil-water separation and with the pore diameter adjusted by potato starch. The invention discloses a novel bacterialcellulose/silicon dioxide/hexadecyltrimethoxysilane oil-water separation composite membrane with good oil-water separation capability and high biodegradability, and a preparation method thereof, and belongs to the technical field of functional materials. The preparation method comprises the following steps: (1) culturing and purifying a bacterial cellulose/starch membrane; (2) preparing an ethyl orthosilicate/ethanol solution and a hexadecyl trimethoxy silane/ethanol solution; and (3) preparing the bacterial cellulose/silicon dioxide/hexadecyltrimethoxysilane oil-water separation composite membrane. The preparation method is simple, compared with a traditional oil-water separation mode, the prepared composite membrane not only has good oil-water separation capacity, but also has a series of advantages of high biodegradability, no toxicity or harm, shape plasticity and the like, and technical support is provided for saving water and oil resources and protecting the environment.

The present invention discloses a device and method for oil-water separation on the top of a debenzolization tower with excellent separation effect, and relates to the technical field of debenzolization of chemical production, and the device and method are used for improving the oil-water separation effect on the top of the debenzolization tower. The technical proposal is as follows: according tothe device and method, a plurality of liquid level gauges are adopted to display height of an oil-water separation interface of each part of a tank body, and the separation interface of an oil-water mixture in the tank body is controlled between a separation oil outlet and an oil-water mixture inlet through regulating control valves of different separated water outlets and different oil return ports, thus the oil-water separation effect is improved, it is ensured that separated oil does not carry water, and separated water does not carry oil, benzene oil is fully returned to the debenzolization tower, and the separated water is continuously discharged outside the debenzolization tower, debenzolization distillation operation is stabilized, the light benzene yield and quality are greatly improved, and significant economic benefits are achieved; and oil-water separation control operation is normalized and standardized, the operation efficiency is improved, the time for regulating oil-water separation to achieve optimal effect is effectively shortened, and safe and stable production of debenzolization distillation is ensured.

The invention discloses a preparation method of a polyacrylonitrile/reduced graphene oxide composite oil absorption material, belongs to the field of oil absorption materials, and aims to solve the problems that an existing polymer porous oil absorption material is low in oil absorption rate and complex in preparation process. The preparation method comprises the following steps of: chopping polyacrylonitrile fibers to 3-5mm; putting the chopped polyacrylonitrile fibers into a crusher; uniformly dispersing and infiltrating the chopped polyacrylonitrile fibers into a reduced graphene oxide aqueous solution; carrying out ultrasonic treatment for 10-30min; sealing an obtained product in a container; putting the container into a drying oven; carrying out hydrothermal reaction; cooling to roomtemperature; washing a reaction product with distilled water; freezing the reaction product in a refrigerator; and finally drying the reaction product in a freeze dryer to obtain the polyacrylonitrile/reduced graphene oxide composite oil absorption material. According to the preparation method, the polyacrylonitrile fibers are taken as a framework, and the reduced graphene oxide is taken as a reinforcing phase; the oil absorption material which is ultra-light, high in saturated oil absorption rate, high in oil absorption rate, stable in structure and capable of being recycled for multiple times is prepared through the hydrothermal method and freeze drying, and the oil absorption material is widely applied to the fields of oil stain leakage and the like.

An oil-water separator with an oil discharge outlet adjusting spontaneously includes a liquid storage tank with grease and wastewater, a telescopic pipe in the liquid storage tank, and a floater unit connected with the telescopic pipe. The liquid storage tank comprises an inlet for grease and wastewater input, and a water outlet for wastewater output. The floater unit comprises at least one floater floating between grease and wastewater, and an isolation member extending in the height direction between the floater and the telescopic pipe. The isolation member fluctuates along with height changes of wastewater and includes an oil discharge outlet for grease entering the telescopic pipe. Therefore, an oil outlet, adjusting height spontaneously, is configured by the at least one floater, such that the overall height is reduced, a sufficient difference of levels of grease and wastewater is generated by the isolation member, thereby improving the oil-water separation effect.

The invention provides a demulsifier composition, a lubricating oil composition containing the demulsifier composition, and a method for improving the demulsification performance of lubricating oil. The demulsifier composition comprises an alkyl acrylate and alpha-alkenylsulfonic acid copolymer and a tetra(4-hydroxyphenyl)porphyrin-epoxypropane-ethylene oxide polymerization reaction product according to a mass ratio of 1-10:10-1. The demulsifier composition has the advantages of good stability, excellent oil-water separation effect and excellent demulsification effect, is especially suitable for separating a tiny amount of water from the lubricating oil, and is also especially suitable for industrial gear oil, steam turbine oil and marine crankcase oil.

The invention discloses a super-hydrophobic cotton yarn material for oil-water separation as well as a preparation method and application of the super-hydrophobic cotton yarn material. The preparationmethod of the super-hydrophobic cotton yarn material for oil-water separation comprises the following steps: providing a cotton yarn material; etching the cotton yarn material by using an alkaline solution to obtain an etched cotton yarn material; immersing the etched cotton yarn material into a tannic acid solution, then adding a ferrous sulfate solution for modification, circularly immersing the cotton yarn material into the mixed solution for multiple times, and drying the modified product to prepare the super-hydrophobic cotton yarn material for oil-water separation. The super-hydrophobiccotton yarn material for oil-water separation has good oil-water separation performance.

The invention discloses a composite polyurethane foam emulsion separation material. The separation material is polyaluminum chloride in-situ composite polyurethane foam. The separation material is prepared from polyether polyol, a catalyst, a foaming agent, a foam stabilizer, isocyanate and polyaluminum chloride. The preparation method of the separation material adopts a quick foaming method, and comprises the following steps: adding commercial polyaluminum chloride into a polyurethane foam synthesis raw material, and uniformly dispersing the polyaluminum chloride into the foam synthesis raw material by stirring; and foaming and naturally curing to obtain the emulsion separation material. The preparation method is simple in process, short in period, mild in condition, green and environment-friendly, and easy for large-scale production and application. The emulsion separation material of the polyaluminum chloride in-situ composite polyurethane foam has excellent hydrophobicity and stable physical and chemical properties; and the efficient separation efficiency on oil-in-water type emulsification is realized, and the wide application prospect is realized in the field of oily sewage treatment.

The invention provides a preparation method of dissolving-resistant oil-water separation filter paper, and the preparation method comprises the following steps: obtaining raw materials; adding nano-diatomaceous earth, calcium carbonate, water-soluble phenolic resin, coconut fibers, saw dust, citric acid, zinc nitrate and microcrystalline cellulose into mixed slurry, and heating to 70-80 DEG C; after defibering by a defibering machine, grinding pulp, performing papermaking according to a conventional papermaking process, forming, squeezing and drying; compared with the prior art, the preparation method comprises the following beneficial effects: by selecting natural cotton fibers, gypsum fibers, and polyester fibers to serve as basic raw materials, the characteristics of oil-water resistance and high temperature resistance of the filter paper are provided, by addition of the saw dust, the environment-friendly performance is improved, and the oil-water separation performance of the filter paper material is effectively improved.

The invention relates to a buffer support of a marine separator. The buffer support comprises a support plate used for installing a separator, wherein short columns are symmetrically installed on the lower surface of the support plate and are connected with the support plate by first cushions; the lower ends of the short columns are jointly connected with a bottom plate fixedly; the lower end of the bottom plate is fixedly connected with supporting legs symmetrically; the ends of the supporting legs are connected with second cushions; the second cushions are alternately distributed on the supporting legs. The buffer support has the technical effects that through a double buffer structure of the short columns and the supporting legs, the buffering effects of the separator are effectively improved and vibration is reduced, thus improving the oil-water separating effects of the separator.