55results about How to "Reduce oil content" patented technology

The invention discloses application of a transcription factor BnaMYB52 in regulation and control of oil content and lignin content of rape seeds. The amino acid sequence of the transcription factor BnaMYB52 is shown as SEQ ID NO.5, or other amino acid sequences which are derived from the amino acid sequence shown as SEQ ID NO.5 through substitution and / or deletion and / or addition of one or more amino acid residues and have the same protein function. An agrobacterium tumefaciens-mediated genetic transformation method is used for performing overexpression and gene editing on the BnaMYB52 gene respectively, and it is found that the BnaMYB52 gene negatively regulates and controls the oil content of rape seeds and positively regulates and controls the lignin content. The method disclosed by the invention has very important application prospects in high-oil-content breeding of the rape and quality improvement of the rape cake meal.

The invention discloses a three-sludge treatment agent and a preparation method thereof, and belongs to the technical field of oily sludge treatment, the three-sludge treatment agent comprises a treatment agent A and a treatment agent B. The treatment agent B comprises the following raw materials by mass: 30-40 parts of polyacrylamide, 8-10 parts of modified attapulgite clay, 5-6 parts of a compound, and 40-55 parts of deionized water. The modified attapulgite clay is strongly combined with protective films at oil-water and oil-sludge interfaces in the oil sludge through electrostatic force, hydrogen bonds and hydrophobic interaction, the protective films at the oil-water and oil-sludge interfaces are destroyed, oil drops are released and coalesced to form an oil phase, and separation of oil, water and sludge is achieved; positive charges carried in the modified attapulgite clay can be adsorbed to the surfaces of sludge particles with negative charges to be settled and separated out; carboxyl groups contained in the modified hemicellulose can be combined with hydrophilic groups of sophorolipid to form stable mixed micelles, so that the situation that the sophorolipid is easily influenced by the environment to lose efficacy, and oil drops are regathered and precipitated is avoided.

The invention relates to an oil-containing sludge hydro-thermal treatment energy efficient utilization system and an operation method thereof, and the system comprises a preheating fluidization part which is used for preheating a fluidization material; the steam heating part is used for heating the materials and participating in the hydrothermal reaction; the steam heating part is used for supplying high-temperature steam to the hydrothermal reaction part so as to carry out material heating and hydrothermal reaction, and flash evaporation is carried out after the hydrothermal reaction; the condensing medium flows into the steam heating part after being heated; the gas from the preheating fluidization part is cooled and condensed to form low-temperature flash condensate; the flash tank is used for mixing to form a flash destabilized mixture; and the centrifugal separation part is used for centrifugally separating the flash destabilized mixture from the flash tank. The heat load and the cooling load of system operation are reduced, and energy conservation and consumption reduction are achieved; and the low-temperature flash evaporation condensate is mixed with the materials in the flash evaporation tank, so that the oil content of the residual solid phase after centrifugal separation is further reduced, the volatilization of light petroleum components in the condensate is reduced, and the safety and pollution risks are reduced.

The utility model discloses an efficient oil-water separator which comprises a box body, partition plates are arranged in the box body, the box body is divided into three grooves by the two partition plates, a separation groove is formed in the middle of the grooves, a feeding pipe is arranged in the separation groove, storage grooves are formed in the two sides of the separation groove, and a heating assembly is arranged at the bottom end of the separation groove. A liquid level sensor is arranged on the inner wall surface of the separation tank, a draw-off pump is arranged on the inner wall of the storage tank, a liquid level display screen is arranged on the surface of the box body, and a transparent observation window is arranged on the bottom side of the liquid level display screen. According to the efficient oil-water separator, the heating assembly is arranged to accelerate oil-water layering, meanwhile, the liquid level sensor is arranged to monitor the storage amount of water after layering, water can be accurately pumped into the storage tank to be stored according to the pumping speed of the draw-off pump, and the oil content in the separated water is reduced.

The oil separation device is applied to a high-flow-rate volume space of the compressor, the oil separation device comprises a plurality of oil separation pieces, oil storage cavities are formed in the oil separation pieces, oil separation openings communicated with the oil storage cavities are formed in the surfaces of the oil separation pieces, and the oil separation openings are communicated with the oil storage cavities. The oil separation piece is used for colliding with a gas-liquid mixture when the compressor runs and enabling collided and condensed oil drops to flow into the oil storage cavity through the oil separation opening; and when the compressor is stopped, the oil drops flow out of the oil storage cavity through the oil separation port. According to the invention, the plurality of oil separation pieces are arranged in the high-flow-rate volume space to form the collision oil separation channel, so that the oil separation capacity in the high-flow-rate volume space is improved, the oil yield of the compressor is reduced, and the oil content of the system is reduced.

The invention discloses a kitchen waste treatment system and treatment method, comprising a conveyor belt for conveying kitchen waste from bottom to top, a grinder is arranged below the top of the conveyor belt, a grease trap for separating oil and water is arranged below the bottom of the conveyor belt, the grease trap is connected to an oil tank, the oil separated by the grease trap enters the oil tank, and the oil tank is connected to a discharge pipe through a pump; it also comprises a press for squeezing liquid, the inlet end of the press is a discharge port, the liquid squeezed by the press is discharged from the discharge port, and the remaining residue is discharged from the residue discharge port; the discharge end of the grinder is connected to a slurry tank, the slurry tank and the grease trap are both connected to the discharge port of the press through a pump, and the discharge port of the press is connected to the discharge pipe. The invention is used to solve the problem that solid and liquid are mixed in kitchen waste in the prior art and cannot be effectively automatically treated, and realizes the purpose of quickly treating kitchen waste and efficiently separating solid and liquid waste therein.

A ventilation cap of a gearbox relates to the technical field of gearboxes and comprises a plug body and a filter screen, an air inlet hole, a first condensation oil cavity, a second condensation oil cavity and an exhaust hole are formed in the plug body, and the air inlet hole, the first condensation oil cavity, the second condensation oil cavity and the exhaust hole are communicated in sequence; the filter screen is installed in the air inlet hole and used for filtering oil liquid in the oil-gas mixture entering the first condensation oil cavity from the air inlet hole. The oil-gas separation effect can be improved while the size is reduced, the oil recovery amount is increased, the operation cost is reduced, and disassembly and assembly in a limited space environment are facilitated.

The utility model discloses a cylinder structure of engine, engine and vehicle, the cylinder structure of engine includes: the cylinder body, the cylinder body forms the blow-by channel, the one end of blow-by channel is suitable for being communicated with the breathing system of engine, the other end of blow-by channel is suitable for being communicated with the crankcase of engine, a first cooling water jacket is further formed on the cylinder body and arranged around the blow-by channel so that heat exchange media in the first cooling water jacket can exchange heat with gas in the blow-by channel. According to the cylinder block structure, the cylinder block structure comprises the cylinder block body, the blow-by channel is formed in the cylinder block body, the first cooling water jacket is formed in the cylinder block body, the first cooling water jacket can cool gas in the blow-by channel, the viscosity of engine oil in blow-by gas can be increased, the engine oil forms large particles, and before the blow-by gas enters a breathing system of an engine, the engine oil can be cooled; the engine oil is separated from the blow-by gas in advance, the engine oil content in the blow-by gas is reduced, engine oil combustion is reduced, whole machine emission is optimized, and environmental pollution is reduced.

The invention discloses a hyperbranched nano POSS (Polyhedral Oligomeric Silsesquioxane) material, a hyperbranched nano POSS active material as well as a preparation method and application of the hyperbranched nano POSS material and the hyperbranched nano POSS active material, the hyperbranched nano POSS material is grafted and modified on the basis of a polyhedral oligomeric silsesquioxane nano material matrix and is used as a base material, and the base material, organic amine and a surfactant are prepared into a hyperbranched response type oily sludge circulating cleaning material NM-POSS. The NM-POSS has excellent pH response performance, and the state of the emulsion can be changed by adjusting the pH, so that the NM-POSS can be recycled after being cleaned; the cleaning agent also has excellent cleaning performance, and the oil content of bottom mud can be reduced to 2% or below when different oily sludge is cleaned, so that the requirement for cleaning different oily sludge is met.

The utility model provides an oily sludge treatment device. The oily sludge treatment device comprises a preheating unit, a thermal desorption reactor, a dust removal unit, a condensation unit, a tail gas treatment unit, a dry powder processing unit, a cooling water storage unit and an oil storage tank, oily sludge enters the preheating unit, and the top of the preheating unit is connected with the bottom of the thermal desorption reactor; one side of the thermal desorption reactor is connected with the upper side surface of the dust removal unit; the lower part of the thermal desorption reactor is connected with the top of the dry powder processing unit; the upper part of the dedusting unit is connected with the bottom of the condensing unit; the lower part of the dedusting unit communicates with the top of the dry powder processing unit; the lower part of the condensing unit is connected with the cooling water storage unit, the upper part of the condensing unit is communicated with the bottom of the preheating unit, the bottom of the condensing unit is connected with an oil storage tank, and the top of the condensing unit is connected with the tail gas treatment unit through a pipeline. The oil separation device has the beneficial effects that oil can be relatively thoroughly separated from solid components, and the oil content in obtained solid residues is extremely low.

The invention discloses a production process and production equipment of corn grit rice crust, which comprises the following steps: mixing rice crust raw materials to form a mixture, and laying the mixture in a baking tray; adding water into the mixture in the baking tray through an atomizing nozzle; carrying out primary baking on the baking tray after the water is added so as to obtain a cake-shaped primary material blank; slicing the primary material blank, removing water, and frying to obtain an intermediate material blank; seasoning the intermediate material blank, cooling and packaging to obtain a rice crust finished product; in the technical process, the raw materials are not soaked, steamed, boiled or intervened and ground, but are directly baked and formed after being mixed, and particle tissues are not damaged, so that the produced finished product is relatively low in oil content, crisp and tasty, and meanwhile, the original particle shape and original grain fragrance of grains are reserved; in the forming process, the manpower and material resource cost is well saved, and the production efficiency is improved.

This invention discloses the application of GmSTART protein in increasing the protein and oil content of soybeans, belonging to the field of plant breeding technology. To improve the quality, yield, and plant height of soybeans and Arabidopsis thaliana, this invention provides the application of GmSTART protein in increasing the protein content, oil content, total fat content, yield, and / or plant height of soybeans or Arabidopsis thaliana. This provides more options for breeding soybeans with high oil and high protein content.

The application discloses a pretreatment method of gas field water, which comprises the following steps: gas stripping of the gas field water to obtain gas phase and liquid phase, wherein the volume ratio of the gas field water to the stripping gas is 1:8-20; returning the gas phase to the previous step after dry desulfurization; adding the liquid phase into a dissolved air water floatation after oxidative desulfurization and oil-water separation by biomass modified cotton sponge; performing oxidation treatment on the water phase after oil-water separation, then performing sedimentation treatment, and performing filtration treatment on the water phase after solid-liquid separation; removing sulfur and reducing COD by gas stripping and oxidation; treating the hydrogen sulfide gas generated by the gas stripping by dry desulfurization; recycling the desulfurized gas; removing suspended solids, high-valence metal ions with valence of two or more, colloids, organic matters, bacteria and microorganisms by a ceramic ultrafiltration membrane filter and a ceramic nanofiltration membrane filter.

The present invention belongs to the technical field of preparation of agents for oily sludge, and specifically relates to a recyclable agent for treating oily sludge, a preparation method and its application. The recyclable agent for treating oily sludge is composed of the following raw materials: 2-5% magnetic responsive ionic liquid, 1-6% nonionic surfactant, 10-20% low molecular weight alcohol, 8-15% alkaline component, 0.2-1.0% flocculant, and the rest is water. The recyclable agent for treating oily sludge of the present invention is a micellar solution stably formed by magnetic responsive ionic liquid and nonionic surfactant, relying on the solubilization ability of micelles themselves for oil-soluble substances, the hydrophobicity of nonionic surfactants, and the synergistic effect between various non-covalent interactions such as π-π stacking of magnetic responsive ionic liquid and crude oil components, and has a strong removal effect on crude oil on the surface of oily sludge, and the magnetic responsive ionic liquid can be recycled and reused after treating oily sludge.

The invention provides application of soybean GmSMS6 protein and a coding gene thereof in regulation and control of soybean grain quality traits. The genome sequence of the GmSMS6 is as shown in SEQ ID No. 1, and the coded amino acid sequence is as shown in SEQ ID No. 2. Gene editing is carried out on soybean Zp661 through a CRSIPR-Cas9 system, homozygous mutant plants Z1 and Z2 with the seed protein content obviously increased and the oil content obviously reduced compared with wild soybean Zp661 are obtained, and it is proved that soybean GmSMS6 has the function of regulating and controlling the quality of soybean seeds. The invention provides important gene resources and theoretical guidance for soybean molecular breeding and germplasm innovation.

The invention discloses a targeted barite collecting agent. The targeted barite collecting agent comprises bipyridinium salt and carboxylic acid. The invention also discloses a preparation method and application thereof. According to the oil-based rock debris resourceful treatment method, oil is extracted through a low-temperature counter-current extraction technology, barite minerals are extracted from deoiled solid phases through a flotation method, a propping agent is prepared from flotation tailings, and development of an efficient extraction agent and a flotation agent is carried out. The recovery rate of barite can reach 95% or above.

The invention discloses a method for extracting vegetable wax from a wood sterol by-product, which comprises the following steps: S1, mixing the wood sterol by-product with a solvent at a first temperature to obtain a mixed solution; s2, performing extraction treatment on the mixed solution to obtain a treated mixed solution; s3, filtering the treated mixed solution to obtain cerate and filtrate; and S4, purifying the cerate by adopting an adsorption method to obtain the vegetable wax. According to the method, the vegetable wax is efficiently extracted from the lignosterol molecular distillation waste by means of solvent extraction and adsorption, and the high-quality vegetable wax is obtained from byproducts, so that the application range of low-cost biomass raw materials is expanded, the utilization value of low-grade raw oil is increased, high-value utilization of waste resources is realized, and the method is suitable for industrial production. Meanwhile, the method has the characteristics of high treatment capacity, simple process, low toxicity, environment friendliness, low cost and the like and is suitable for industrial production.

The present application relates to the technical fields of oil exploitation downhole separation equipment, and particularly relates to a parallel type gravity oil-water separation unit, characterized by comprising gravity separation modules arranged in a stack, a liquid inlet distribution module is vertically inserted and arranged in the central part of the gravity separation module, the liquid inlet distribution module is arranged in the lifting sleeve, and the gravity separation module, the liquid inlet distribution module and the lifting sleeve are detachably connected through standardized interfaces. The present application combines multiple parallel gravity separation modules with a unique inclined guide plate group in the module, which greatly improves the oil-water separation efficiency, effectively prolongs the flow path and residence time of the oil-water mixture, and creates sufficient conditions for gravity stratification based on density difference. Compared with the traditional series type single-cavity separation device, the design makes the oil-water separation more thorough, and the oil content in the separated water can be less than 20 mg / L, and the separation efficiency is improved by orders of magnitude.

The present invention discloses a device and method for realizing rapid separation of large-scale oil-water mixtures. The separation device includes one or more cyclone core tubes, which are cyclone sections, tapered sections and flow-stabilizing tubes from bottom to top. The cyclone section is a cylinder with upper and lower openings, and the lower end opening of the cyclone section is an axial inlet, and a spiral blade is provided on the upper part of the axial inlet; the tapered section includes an inner cone section with a certain taper and upper and lower openings, and a sleeve outside the inner cone section, and a plurality of water phase outlets are evenly distributed on the sleeve in an annular direction, and two rows of water holes are axially symmetrically provided on the inner cone section; the flow-stabilizing tube is a cylinder with upper and lower openings, and the lower end of the flow-stabilizing tube penetrates into the inner cone section from the upper opening of the inner cone section and is fixed to the upper part of the cyclone section, and the upper opening of the flow-stabilizing tube is an oil phase outlet. The separation device of the present invention introduces a flow-stabilizing tube to collect large oil droplets near the axial direction of the cyclone section, and has a compact structure, high separation efficiency and stable separation effect.

The invention provides an oil-water separation device for a transformer accident pool, comprising an oil-water aeration tank and an oil-water separation pipe, wherein an aeration pipe and a water supply pipe are arranged at the bottom of the oil-water aeration tank, and an oil-water overflow pipe is arranged at the top, and an oil-water feed port is opened on the oil-water separation pipe, and the oil-water feed port is connected to the oil-water overflow pipe. When the sewage of the transformer accident pool is subjected to the oil-water separation operation, the sewage first enters the oil-water aeration tank, and the liquid level is controlled to the entrance of the oil-water overflow pipe. Aeration, on the one hand, separates the oil and water, and reduces the oil content in the water phase. On the other hand, the liquid level in the oil-water aeration tank fluctuates, and the transformer oil and part of the water floating on the liquid level enter the oil-water separation pipe from the oil-water overflow pipe. After a period of time, the oil-water separation pipe is allowed to stand, so that the oil and water in the oil-water separation pipe are separated into layers. After the standing and separation, the water phase at the bottom can be returned to the oil-water aeration tank for secondary aeration to increase the treatment depth. The oil phase is discharged, which greatly reduces the amount of water in the oil phase, and realizes true oil-water separation.

The present application relates to a kind of methods for extracting oil and rubber oil dewaxing, it is characterized in that using the composite solvent of polar solvent and solubilizer is dewaxing solvent, polar solvent uses N-methyl pyrrolidone, solubilizer is the mixture of one, two or three of benzene, toluene, xylene, above wax precipitation temperature, the composite solvent is mixed with extracting oil or rubber oil, then crystallization is cooled, filtration is obtained wax cream and filtrate, wax cream and filtrate are respectively heated and evaporated to recover solvent and obtain wax and dewaxed oil.

The invention provides a multi-stage oil removal device and method for copper electricity rich liquor, and relates to the technical field of copper hydrometallurgy. The device comprises a pump, a micro-nano bubble generator and an oil removal tank, a first discharge port in the bottom of the oil removal tank is connected with the micro-nano bubble generator through the pump, and an outlet of the micro-nano bubble generator is connected to a gas-liquid inlet of the oil removal tank. The interior of the oil removal tank is divided into an air flotation oil removal area and an adsorption oil removal area through a vertical overflow baffle, a liquid level plate is arranged on the upper portion of the overflow baffle, a gas-liquid inlet is formed in the lower portion of the air flotation oil removal area, two layers of horizontal blocking partition plates are arranged on the lower portion of the adsorption oil removal area, and a vertical porous seepage plate is arranged on the lower portion of the lower blocking partition plate close to a discharging opening in the bottom of the side wall. Fiber balls are filled at the lower part of the blocking clapboard; and an overflow weir is arranged on the side of the top of the adsorption deoiling area. Through micro-nano bubble air flotation oil removal and fiber ball adsorption oil removal, the oil content in the electro-pregnant solution is effectively reduced, the high-quality and qualified electro-pregnant solution is provided for electro-deposition operation, the influence of organic matter on the electro-deposition operation is reduced, and high-quality cathode copper is obtained.

The invention discloses skid-mounted equipment for treating VOCs in a petroleum refining sewage pool. The skid-mounted equipment comprises a pretreatment unit, a cooling unit, a solvent absorption unit and an adsorption unit, wherein the adsorption unit comprises a biological catalase device and a zeolite adsorption device which are sequentially connected in series along the flow direction of waste gas. According to the invention, multi-stage dehumidification and oil removal are realized, the oil content and moisture content of waste gas entering a rear-end system are reduced, and the problems of poisoning and blockage of an adsorbent are solved; high-boiling-point components are recovered through condensation, medium-boiling-point components and high-boiling-point components are recovered through solvent absorption, low-boiling-point components are desorbed after being adsorbed and concentrated through zeolite, graded recovery of resources is achieved, and economical efficiency is improved; through cooperative treatment of biological catalase and zeolite adsorption, the biological catalase device is used as pre-pretreatment, macromolecules are converted into micromolecules, and the adsorption load of follow-up zeolite is reduced, so that the whole system can still keep stable emission indexes under the conditions that the concentration of waste gas in a petroleum refining sewage pool is large in fluctuation and the components are complex.

The present invention provides a rotor assembly structure, a motor and a compressor, which relate to the technical field of refrigeration devices, and solve the technical problem that the conventional rotor assembly structure in the prior art makes the cooling effect of the refrigerant on the rotor assembly relatively poor. The rotor assembly structure includes a rotor core and a flow hole, wherein the rotor core is provided with a flow hole and the flow hole is spiral, and part of the refrigerant can flow from the bottom of the rotor core to the top of the rotor core along the flow hole. The present invention is used to reduce the temperature of the compressor and the amount of oil discharged.

The present application specifically provides a sludge treatment process and equipment, and the sludge treatment process includes: pretreatment, uniformly mixing the sludge; rotary cavitation, stirring the pretreated sludge at high speed through a rotary cavitation device, so that the bubbles generated in the sludge split after approaching the inner wall of the rotary cavitation device, and the released energy destroys the combination of oil, mud and water, so that the sludge and water particles are redispersed; jet cavitation, spraying the sludge after rotary cavitation through a jet cavitation device; solid-liquid separation, the sludge after rotary cavitation is separated into solid and liquid phases through a solid-liquid separation device. The rotary cavitation and jet cavitation in the sludge treatment process can effectively destroy the combination of oil, mud and water by physical means, so that the solid-liquid separation process separates the solid tailings with low oil content.

Provided is a method for manufacturing instant fried noodles having a high degree of gelatinization and having a good taste and texture, the method comprising frying raw noodle strings in oil without steaming, and drying the noodle strings. This method for manufacturing instant fried noodles comprises: preparing a dough by kneading a noodle raw material containing a main raw material, water, and at least one calcium-containing material selected from the group consisting of baked calcium and calcium hydroxide; cutting out raw noodle strings from the dough; and frying the raw noodle strings in oil without steaming the raw noodle strings, and drying the noodle strings.

The invention discloses an exhaust silencer and a compressor applying the exhaust silencer, the exhaust silencer comprises a shell assembly, an air inlet assembly and an exhaust assembly, the air inlet assembly and the exhaust assembly are both connected to the shell assembly, and the shell assembly, the air inlet assembly and the exhaust assembly are internally provided with silencing areas which are communicated with one another; an oil return hole communicated with the silencing area of the shell assembly is formed in the shell assembly, and after a gas-liquid mixture enters from the gas inlet assembly, is subjected to vibration reduction and silencing through the silencing areas and is subjected to liquid separation, gas is discharged out of the exhaust assembly, and liquid is discharged out of the oil return hole. Mutually communicated silencing areas are arranged in the shell assembly, the air inlet assembly and the exhaust assembly, and communicated oil return holes are further formed in the silencing areas, so that exhaust pressure pulsation of the compressor can be effectively restrained, output air is smoother, and noise and vibration are reduced; the reliability of the compressor is improved, the oil content of the compressor is reduced, and the heat exchange efficiency of a system pipeline is improved.

The present invention provides a transformer accident oil pool system, including an accident oil pool, an oil-water buffer tank and an oil-water separation device. An oil-water feed pump is arranged on the oil-water buffer tank, and the oil-water feed pump is connected to the accident oil pool. A debris retention filter frame is arranged in the oil-water buffer tank. The outlet of the oil-water feed pump extends into the debris retention filter frame. An oil-water discharge pump is also arranged on the oil-water buffer tank, the feed end of the oil-water separation device is connected to the outlet of the oil-water discharge pump, and the water outlet is connected to a wastewater storage tank, a wastewater circulation pump is arranged on the wastewater storage tank, and the outlet of the wastewater circulation pump is connected to the oil-water buffer tank. The low-oil-content wastewater treated by the oil-water separation device is transported back to the oil-water buffer tank by the wastewater circulation pump, and the dust, sand, animal and plant carcasses and other debris trapped in the debris retention filter frame are circulated by the low-oil-content wastewater to reduce the amount of transformer oil attached to the debris, so as to achieve harmless disposal of solid waste.

The invention discloses a deep sea nano-generator, a preparation method thereof and a water flow energy collecting device. The nano-generator is of a symmetrical structure and comprises a packaging film layer, an electrode layer, a positive friction film layer, an oil layer, a negative friction film layer, an electrode layer and a packaging film layer which are sequentially stacked from top to bottom, and the electrode layer is connected with a wire; the negative friction film layer is a polyvinylidene fluoride film doped with titanium dioxide. According to the invention, the PVDF film doped with titanium dioxide is used as the negative friction layer, so that the mechanical property of the nano-generator is improved, and the nano-generator adapts to a high-pressure working environment of a deep sea; a single oil layer air layer is adopted, and the oil content of the oil layer is reduced, so that the performance output of the nano generator under the deep sea pressure is improved. The water flow energy collecting device can still supply power stably in a deep sea environment with high pressure under the condition that the water flow speed is low; and the device can still work normally under the hydrostatic pressure of 20Mpa.

The present disclosure provides an oil separation device and a compressor. The oil separation device is arranged on the exhaust side of the compressor, and includes: a compressor end cover, a first oil separation structure and a second oil separation structure are arranged in the compressor end cover; the first oil separation structure and the second oil separation structure are arranged in series along the exhaust flow direction of the compressor, and the oil-gas mixture discharged from the compressor enters the first oil separation structure for oil-gas separation, and then enters the second oil separation structure for oil-gas separation again. The oil separation device of the present disclosure adopts a two-stage oil separation mode, and a two-stage oil separation structure is arranged in the end cover of the compressor. The first oil separation structure and the second oil separation structure are connected in series with the exhaust port of the compressor, and the refrigerant gas discharged from the compressor is separated from the oil and gas twice, thereby improving the effect of gas-liquid separation, reducing the oil content of the refrigerant gas discharged from the compressor, and avoiding that the friction pair of the compressor cannot be effectively lubricated and affects the long-term reliability of the compressor.