1024 results about "Waste oil" patented technology

The invention discloses a composite modified waste cooking oil biological asphalt mixture and a preparation method thereof. The asphalt mixture comprises the following substances in percentage by mass: 4-7wt% of biological asphalt, 89-92wt% of aggregate, 2-3wt% of mixed mineral powder and 0.5-1.0 wt% of lignin fiber, the biological asphalt is prepared from the following substances in percentage by mass: 50 to 58 weight percent of matrix asphalt, 18 to 20 weight percent of waste cooking oil, 15 to 18 weight percent of mixed rubber powder, 2 to 2.5 weight percent of polymer modifier, 6 to 8 weight percent of mixed resin and 1 to 1.5 weight percent of additive. The preparation method comprises the following steps: preparing biological asphalt; respectively putting the aggregates with various grades of particle sizes, the mixed mineral powder and the biological asphalt into a drying oven for heating; sequentially putting the biological asphalt and the aggregate with various grades of particle sizes into a mixing pot, and mixing; sequentially adding the mixed mineral powder and the lignin fiber into the mixing pot, and continuously mixing to obtain the composite modified waste cooking oil biological asphalt mixture. The biological asphalt is prepared in a layer-by-layer progressive mode, and the technical problem that the doping amount of the waste cooking oil and the performance of the biological asphalt are difficult to achieve balance is solved.

The invention discloses a system and a method for producing biological aviation kerosene by using waste oil and belongs to the technical field of biological aviation kerosene preparation. The method comprises the following steps: (1) the waste grease and a magnetic catalyst loaded with ionic liquid are mixed and enter a suspended bed pre-hydrogenation reactor for reaction to obtain a pre-hydrogenation product, a carrier in the magnetic catalyst loaded with the ionic liquid is Fe3O4 magnetic particles coated with a silicon dioxide layer, and the ionic liquid is molybdenum-based ionic liquid; (2) separating the pre-hydrogenation product to obtain a primary hydrogenation product; (3) performing hydrogenation upgrading on the primary hydrogenation product to obtain an upgraded intermediate product; (4) separating the upgrading intermediate product to obtain a secondary hydrogenation upgrading product; and (5) carrying out hydroisomerization reaction on the secondary hydrogenation upgrading product to obtain the biological aviation kerosene. According to the method, the magnetic catalyst loaded with the ionic liquid is adopted to catalyze the waste grease, recycling can be achieved under the action of a magnetic field, the catalytic stability is high, and industrial stable production can be achieved without supplementing the catalyst.

This application discloses an ionic liquid catalyst for producing renewable fuel from waste oils and fats, as well as its preparation method and application, belonging to the field of waste oil and fat processing technology. Using a self-synthesized ionic liquid catalyst to catalyze the hydrogenation of waste oils and fats to produce renewable fuels, this catalyst can adsorb or convert impurities in the waste oils and fats into products, improving product yield and quality. This paves the way for the industrialized production of second-generation biodiesel from waste oils and fats.

The invention belongs to the technical field of electric spindles, and particularly relates to an electric spindle and a machine tool. Wherein the machine body assembly is provided with an oil inlet channel and an oil return channel; the shaft core is supported on the machine body assembly through the bearing assembly. One end of the oil injection structure is communicated with the oil inlet channel, and the other end of the oil injection structure is communicated with an inner raceway of the first bearing or the second bearing. A spacer bush arranged on the shaft core in a sleeving mode is arranged between the first bearing and the second bearing, the spacer bush is provided with a flow guide channel and a backflow channel communicated with the oil return channel, and the flow guide channel is provided with an oil throwing inclined face so that waste oil in the first bearing and the second bearing can be guided to the backflow channel. According to the motorized spindle and the machine tool, the flow guide channel is arranged on the spacer bush, the oil slinging slope on the flow guide channel can form forced backflow through centrifugal force, oil return automation is achieved, and old oil and redundant oil are prevented from affecting bearing lubrication and cooling.

The invention relates to the technical field of universal joint transmission, in particular to a universal joint transmission shaft assembly which comprises a cross shaft, four bearing sleeves are connected to the cross shaft, roller pins are arranged between the bearing sleeves and the cross shaft, oil seals are installed on one sides of the bearing sleeves and make contact with the surface of the cross shaft, and an oil injection pipeline is arranged in the cross shaft. According to the design, the driving assembly is arranged on the cross shaft, a worker can control the second circular ring to move through the driving assembly, and the second circular ring can pull the oil seal on the side where waste oil is completely discharged so that the oil seal can be better attached to the cross shaft; when oil is injected, waste oil can be discharged from the position between the oil seal on the side with the smaller gap and the cross shaft, so that the amount of fresh oil flowing out of the cross shaft during oil injection is reduced, waste of the fresh oil is avoided, the situation that the waste oil cannot be discharged from the oil seal on the side with the smaller gap is avoided, the lubricating effect is ensured, and the service life is prolonged.

The utility model belongs to the technical field of separating devices, and relates to an oil-liquid separating device of a numerical control grinding machine tool, which comprises a separating cylinder, a filtering device, a machine frame and a separating motor, the separating cylinder is arranged on the lower portion of the machine frame, an oil-liquid tank, a rotating drum and a rotating shaft coaxial with the separating cylinder are arranged in the separating cylinder, and the lower end of the rotating shaft is connected with the separating motor. The oil liquid tank is coaxially suspended in the separation barrel, the filtering device is arranged above the oil liquid tank and comprises a filtering box, an electric heating strip, a magnetic stirring rod and a stirring rotating shaft, a filtering net disc is arranged at the bottom of the filtering box, and the upper end of the stirring rotating shaft is connected with a stirring motor. The electric heating strip melts greasy dirt condensed on waste chips and then flows into the lower separating barrel along with an oil-liquid mixture for centrifugal separation, a centrifugal separation method is adopted for oil-liquid separation, waste oil and cutting fluid are rapidly separated, and the recycling speed of the cutting fluid is increased.

The utility model belongs to the technical field of vacuum pumps, and particularly relates to an oil supplementing and changing system for a vacuum pump, which is characterized in that a balance oil delivery tank is arranged on one side of the vacuum pump or a vacuum pump group, a first vent is arranged at the top of the balance oil delivery tank, a first oil discharge outlet is arranged at the bottom of the balance oil delivery tank, and a first liquid level transmitter is arranged on one side of the balance oil delivery tank; a second air vent is formed in the top of an oil tank of the vacuum pump or the vacuum pump set and connected with a first valve, the first valve is communicated with the balance oil conveying tank through a pipeline, and a second oil discharge outlet is formed in the bottom of the oil tank of the vacuum pump or the vacuum pump set and connected with a second valve and a third valve. The second valve is connected with the waste oil tank through a pipeline, and the third valve is connected with the first oil outlet through a pipeline. According to the utility model, a large amount of labor cost is saved, and the problem that parts of the vacuum pump are abraded due to lack of lubricating oil or deterioration of the lubricating oil caused by mistakes and omissions of manual operation is avoided.

The application relates to the technical field of pavement materials, and particularly discloses a high-strength asphalt-based pavement material and a preparation method and application thereof. The high-strength asphalt-based pavement material comprises the following raw material components in mass fractions: waste rubber powder 60-80 parts, base asphalt 20-50 parts, sodium lignosulfonate modified petroleum resin 10-20 parts, deacidified waste oil 5-15 parts and solid filler 20-30 parts; wherein the raw material components of the solid filler comprise furan resin glass fiber reinforced material, cement kiln dust, blast furnace slag and coal gangue powder. The high-strength asphalt-based pavement material provided by the application has excellent road performance, can maintain good stability at low temperatures, is not prone to cracking, the raw material components are cheap and easy to obtain, the preparation cost is low, and the treatment pressure of solid waste can be effectively relieved.

The invention discloses a preparation method and application of an oil-soluble heteropolyacid ionic liquid catalyst. The catalyst is composed of organic cations and inorganic anions, the cations are one of quaternary ammonium, imidazole and pyridine cations containing long-chain alkyl, the anions are heteropolyacid anions, the long-chain alkyl enables the catalyst to have good oil solubility, the catalyst can be efficiently dispersed in the waste grease, heteropolyacid provides active sites, and the catalyst can be used for treating the waste grease. Nano-scale active particles are formed after in-situ vulcanization, and the catalytic hydrogenation effect is achieved. The invention also provides a preparation method of the oil-soluble heteropolyacid ionic liquid catalyst, the catalyst can be prepared from tertiary amine and halogenated hydrocarbon through three-step reaction of alkylation, anion exchange and acid-base neutralization, the preparation process is simple, a highly toxic reagent is avoided, and the cost is low. The catalyst provided by the invention can be used for catalytic hydroisomerization of various waste oils and fats, has the characteristics of high conversion rate, low coking rate and high product calorific value, and has relatively high industrial application potential.

The invention relates to the field of biodiesel catalytic materials, and particularly discloses a catalyst for kitchen waste oil, a preparation method and biodiesel. The catalyst for the kitchen waste oil is prepared from a Fe3O4-SiO2-Pr < 3 + > nano-particle carrier and a lipase solution, the catalyst is prepared from a Pr (NO3) 3 solution doped with Pr < 3 + > being 0.88-0.92 wt%, the lipase solution is a pseudomonas lipase solution with the concentration being 22-28 mg / mL, and the pH is 7.0; the preparation method comprises the following steps: preparing Fe3O4 nanospheres, coating the surfaces of the Fe3O4 nanospheres with SiO2 layers, dipping the Fe3O4 nanospheres in a Pr (NO3) 3 solution, carrying out calcination treatment to obtain a Fe3O4-SiO2-Pr < 3 + > nanoparticle carrier, placing the carrier in a lipase solution, carrying out adsorption fixation, and separating out the carrier to obtain the catalyst. The catalyst is used for processing biodiesel and has the advantages of being easy to recycle, high in loading capacity, low in activity loss and good in stability.

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

The invention relates to the field of oil-water separators, and discloses an oil-containing waste liquid treatment device for aramid fiber production, the oil-containing waste liquid treatment device comprises a mounting box, a waste oil pool is arranged at the lower end of the mounting box, a steel belt is arranged on one side of the mounting box, and an oil removal assembly is arranged in front of the waste oil pool; the oil removal assembly mainly comprises first scrapers, sliding rods, a rotating roller, a water supply pipe and a nozzle, the first scrapers are arranged on the two sides of the steel belt, and the sliding rods are arranged on the two sides of the lower end of each first scraper. The cleaning effect can be enhanced, waste oil is prevented from flowing back to a waste liquid pool, oil blocks are prevented from entering a driving roller to interfere with running of a steel belt, fine oil blocks can be reduced, and the waste oil falling probability is further reduced; in addition, clear water is dripped on the surface of the steel strip to form thin ice, so that the steel strip can be quickly cooled by utilizing large specific heat capacity of water, and can be kept warm and slow down in temperature rise when the steel strip moves downwards.

Provided herein are processes for recycling hydrocarbons in a used high performance lubricant such as wind turbine gear oil. In the present process and methodologies, the used high performance lubricant is not mixed with another type of used oil. The used high performance oil is contacted with a solvent in an extraction process. Contaminates are extracted and circular hydrocarbons are formed. Solvent can be recovered, and the circular hydrocarbon combined with a high performance base stock for use as a high performance lubricant in a mechanical system.

The utility model relates to an electromagnetic heating waste oil deslagging system, and belongs to the field of waste oil regeneration, the electromagnetic heating waste oil deslagging system comprises a reaction kettle, a circulating pump, an electric heater, an electric heating groove, a slag oil tank, a regulating valve, a switch valve and an extraction piece, the circulating pump is communicated with the reaction kettle, and the electric heater is communicated with the circulating pump and is communicated with the reaction kettle; the electric heating tank is arranged on the circulating pump in a communicating mode, the residue oil tank is arranged on the electric heating tank in a communicating mode, the adjusting valve is arranged at the communicating position of the circulating pump and the electric heating tank, the switch valve is arranged at the communicating position of the electric heating tank and the residue oil tank, and the extraction part is arranged on the residue oil tank and used for discharging residue oil in the electric heating tank into the residue oil tank. The waste oil regeneration device has the advantages that the probability of coking and blocking of waste oil is reduced, time consumed for equipment maintenance is shortened, the heating temperature of the waste oil is reasonably distributed through the electric heater and the electric heating groove, the heating efficiency is improved, energy consumption is reduced, and the problems of low production efficiency and high recovery cost in the waste oil regeneration process are effectively solved.

The invention relates to the technical field of waste oil heating, in particular to an electromagnetic heating system of a waste oil conveying pipeline, and aims to solve the problem that in the prior art, the heating temperature of waste oil is not uniform, and coking is easily generated in the pipeline. Comprising an oil reservoir; the oil delivery pipe is communicated with the oil storage pool, and the bottom of the oil delivery pipe is communicated with an oil discharge pipe; a heating coil; the decoking mechanism is coaxially arranged in the oil conveying pipe, and the end, away from the oil storage pool, of the decoking mechanism is connected with a driving mechanism; wherein the heating coil is used for uniformly heating the oil conveying pipe, and the driving mechanism is used for driving the decoking mechanism to reciprocate along the axis direction of the oil conveying pipe or driving the decoking mechanism to rotate along the circumferential direction of the oil conveying pipe. The heating coil wound on the peripheral wall of the oil conveying pipe can uniformly heat oil in the oil conveying pipe, coking caused by local overheating is avoided, meanwhile, the decoking mechanism can continuously enable the oil in the oil conveying pipe to flow, and coking caused by the fact that the oil stays in a certain area for a long time is avoided.

This invention relates to a bitumen pavement system enhanced for durability through the innovative use of carbon black and waste oil microcapsules. Traditional bitumen pavements often suffer from degradation due to environmental factors and heavy traffic loads, leading to increased maintenance costs and reduced lifespan. This advanced pavement system incorporates carbon black to improve resistance to cracking and wear, while waste oil microcapsules are integrated to provide self- healing properties. As a result, the pavement can recover from minor damages autonomously, significantly extending its service life. This invention not only enhances the performance of bitumen pavements but also contributes to sustainability by utilizing waste materials, making it an effective solution for modern road construction and maintenance. The system is designed for easy application, allowing for seamless integration into existing road construction practices, thus promoting durable and environmentally friendly infrastructure.

The application provides a continuous hydrogenation-isomerization method capable of meeting the treatment requirements of biological oils, especially waste oils, using a homogeneous hydrogenation process with strong adaptability to raw materials as a raw material pretreatment process, and matching a high-activity nanometer transition metal sulfide catalyst. On this basis, a catalytic distillation process is used for selective cracking of long-chain alkanes to improve the yield of medium and long-chain alkanes; an ultramicro flow hydrogen gas mixer and a reduced non-noble metal hydrogenation-isomerization catalyst are used to reduce the hydrogen / oil ratio and the energy consumption of the circulating hydrogen system, and to reduce the production cost of the catalyst, so as to finally realize efficient and low-carbon conversion of waste oils, and low-cost and high-selectivity preparation of biological aviation kerosene.

The invention discloses an experimental device and an experimental method for monitoring oil-gas-water components in a shaft, and particularly relates to the technical field of monitoring equipment.The experimental device comprises the shaft, a single-mode laser, a polarization maintaining optical fiber, a Brillouin optical time domain reflectometer, a condensate gas tank, a pressurization driving device, a stratum water tank, a condensate oil tank, a natural gas tank, a conveying device, an oil-gas-water separator and a waste oil tank; the polarization-maintaining optical fiber is spirally wound outside the shaft, and two ends of the polarization-maintaining optical fiber are respectively connected with the single-mode laser and the Brillouin optical time domain reflectometer; the pressurization driving device is used for pressurizing the condensate gas to the dew point pressure higher than that of the condensate gas and driving the condensate gas to leave the condensate gas tank; the conveying device is used for conveying formation water of the formation water tank, condensate oil of the condensate oil tank and natural gas of the natural gas tank to the shaft, and an outlet of the shaft is connected with the waste oil tank through the oil-gas-water separator. The oil-gas-water three-phase fluid in the shaft can be captured and dynamically tracked in real time, the measurement precision is high, and the experimental device is simple in structure and convenient to install.

The invention relates to the technical field of aviation fuel preparation, and particularly discloses a device and method for preparing sustainable aviation fuel from waste grease. The device comprises a hydrogenation reactor and a smoke exhaust pipe, and a first cleaning device is arranged in the smoke exhaust pipe; the filter plate is in sliding fit with the interior of the smoke exhaust pipe and used for cleaning impurities on the inner wall of the smoke exhaust pipe, the driving mechanism is used for driving the filter plate to slide, the filter plate comprises a fixed part and an elastic part, the elastic part is made of an elastic material, and an expansion pipe communicated with the smoke exhaust pipe is arranged at the end, away from the hydrogenation reactor, of the smoke exhaust pipe. The size of the expansion pipe is larger than that of the smoke exhaust pipe, a second cleaning device used for cleaning impurities on the filter plate is arranged in the smoke exhaust pipe, in the initial state, the elastic part is bent, and when the driving mechanism drives the filter plate to move to the expansion pipe, the elastic part stretches and drives the second cleaning device to clean the two side faces of the filter plate; the device has the effect of improving the discharging efficiency of high-temperature flue gas.

The invention discloses a dechlorinating agent, a preparation method thereof and application of the dechlorinating agent in grease dechlorination, and belongs to the technical field of grease treatment. According to the technical scheme, the method comprises the following steps: dispersing a Fe3O4-coated SiO2 carrier into deionized water, adding into a methanol and glycerol mixed solution, removing oxygen, carrying out ultrasonic dispersion, adding ammonia water, adding a sulfydryl silane coupling agent, introducing inert gas into a reaction system, sealing, heating to 50-90 DEG C, reacting, washing and drying after the reaction is finished, so as to obtain an adsorbent Fe3O4-coated SiO2-SH, namely the dechlorinating agent. The method is applied to the aspect of grease dechlorination, solves the problem that chlorine impurities in existing waste grease cannot be effectively treated, and then serious corrosion is caused to equipment and pipelines, and has the characteristics that the preparation process is simple and easy to operate, and the prepared dechlorination agent can effectively reduce the content of organic chlorine in grease.

The invention belongs to the field of regeneration treatment of waste mineral oil, and particularly relates to a hydrogenation catalysis treatment process for a waste mineral oil suspension bed. The method aims at the problem of deep removal of impurities such as organic chlorine and organic silicon in waste mineral oil. A novel multifunctional composite adsorbent is prepared, a modified aluminum oxide-titanium oxide composite carrier is used as a basis, a main active metal tungsten and an auxiliary agent metal copper are loaded, and the main active metal tungsten and the auxiliary agent metal copper are converted into corresponding sulfides through vulcanization treatment; through multi-stage countercurrent contact, impurities such as chlorine and silicon in the waste oil are deeply removed, the process can efficiently remove organic chlorine and silicon impurities in the waste mineral oil, the service life of a hydrogenation catalyst is remarkably prolonged, the product quality is improved, and downstream equipment is prevented from being corroded.

The present invention relates to the technical field of waste lubricating oil treatment, and discloses a non-distillation regeneration apparatus and system, the non-distillation regeneration apparatus comprises: a high pollution lubricating oil pretreatment unit for removing water and other large particle impurities in waste oil; the electro-adsorption unit is used for capturing pollutants such as polar oxides and colloids in oil by adopting a porous conductive framework under the action of a direct-current electric field; the molecular filtering unit is used for carrying out cross-flow filtering by utilizing a ceramic membrane assembly and removing macromolecular non-ideal components; the deep purification unit is filled with a composite adsorbent to further purify the base oil, and the final product quality is ensured. By means of the innovative electro-adsorption refining filter and the multi-stage collaborative purification process, efficient regeneration of the waste lubricating oil under the non-distillation condition is achieved, high-quality base oil can be stably produced, and the method has the remarkable advantages of being energy-saving, environmentally friendly and high in automation degree.

The invention relates to the technical field of catalysis, and particularly discloses a method for preparing pure biodiesel from kitchen waste oil through enzyme catalytic desulfurization. The method comprises the following steps: adding a Sm2O3 / ZrO2 solid acid catalyst into the kitchen waste oil for pretreatment to obtain pretreated waste oil, and then adding lipase into the pretreated waste oil for catalyzing transesterification to obtain the biodiesel. According to the method for preparing the pure biodiesel from the kitchen waste oil through enzyme catalytic desulfurization, in-situ esterification and synchronous desulfurization of free fatty acid can be completed in a single-step reaction, the stability of a conversion reaction is effectively improved, the production process is simplified, and the conversion efficiency of preparing the biodiesel from the kitchen waste oil is improved.

The utility model discloses an integrated collection device for waste oil in a laboratory, and belongs to the technical field of waste oil collection and treatment. The turning cover is rotationally connected to the funnel; the mesh screen is detachably connected in the funnel; the diversion pipe is in threaded connection with the bottom of the funnel; the connecting plate is in threaded connection with the connecting ring; the breather pipe is fixedly connected to the connecting ring; according to the utility model, the funnel is fixedly arranged on the waste oil collecting barrel through the device, so that the funnel does not need to be taken down to seal the cover, on one hand, the problem that oil is easy to drip when the funnel is taken out is solved, and on the other hand, the problem that a barrel cover is difficult to open by a single hand when a worker pours round-bottom glass instruments such as a distillation flask and a test tube in the prior art is solved; meanwhile, through the turning cover arranged on the funnel, the problem that in the prior art, waste oil remaining on the funnel is prone to volatilizing and polluting the environment is solved.

The invention relates to the field of abandoned oil well transformation application, in particular to a device and method for conducting solar phase change energy storage through an abandoned oil well. According to the technical scheme, a water inlet of a heat storage water tank is connected to a water outlet of a first water pump through a pipeline and a first three-way valve, and a first water pump pipeline is connected with a high-temperature water outlet of a solar heat collection system; a water return port of the solar heat collection system is connected to a user water return pipeline at the heat storage water tank through a second three-way valve; the waste oil well adopted by the invention not only utilizes the geothermal energy of the waste oil well, but also serves as an energy storage container of solar energy, and the heat exchange device adopts a layered variable-pitch spiral tube heat exchanger to adapt to the change of ground temperature and water temperature at different depths; the phase change materials filled in the waste oil well are distributed in a multi-melting-point gradient mode according to changes of ground temperature and water temperature, the problem of large-scale long-time efficient energy storage of solar energy can be solved, the effect of supplementing stratum heat is achieved, and the heat exchange efficiency of the waste oil well serving as an energy storage well can be improved.

The invention discloses a composite adsorption flocculant for waste oil regeneration and a preparation method thereof, and belongs to the technical field of waste oil regeneration. The composite adsorption flocculant is prepared from the following components: 30 to 60 parts of functional modified core-shell microspheres, 6 to 18 parts of polyaluminum chloride, 0.5 to 2 parts of cationic polyacrylamide and 5 to 10 parts of sodium carbonate. According to the functionalized modified core-shell microsphere, the core is the hydroxyl-functionalized nano silicon dioxide core, and the surface of the core has a large number of hydroxyl groups derived from glycerol, which are extremely strong hydrogen bond sites; polar pollutants such as small molecular organic acids, sulfur and phosphoric acid substances in the waste oil can penetrate through the nano pore channels of the shell to reach the inner core; hydroxyl can generate multi-point and strong hydrogen bond locking with carboxyl, sulfo groups and the like of acidic substances, so that the total acid value of the waste oil is reduced, and an inner core can also react with polar functional groups containing oxygen and sulfur, so that further degradation of the waste oil is inhibited.

The invention discloses a method for predicting porosity-permeability dynamic evolution of a carbon sealed storage layer of an abandoned oil reservoir, and belongs to the technical field of carbon sequestration of abandoned oil and gas reservoirs, and the method comprises the following steps: carrying out a visual microfluidic experiment of CaCO3 heterogeneous precipitation under a residual oil condition; carrying out precipitation characteristic parameter extraction according to a visual micro-fluidic experiment result; calculating an effective flow porosity, a reactive bending factor and an interface reaction correction factor on the basis of the precipitation characteristic parameters, and further performing multi-physics field coupling correction on the Kozeny-Carman model to obtain a permeability dynamic evolution model; and performing reservoir permeability evolution prediction by adopting the permeability dynamic evolution model. According to the method, high-precision prediction of porosity-permeability dynamic evolution of the abandoned oil and gas reservoir carbon seal storage layer is realized, multiphase flow and solute transport provide a flow velocity and concentration field for geochemical reaction, the reaction feeds back physical property influencing parameters by changing mineral volume and pore structure, the physical property parameters update the flow field in turn, and the porosity-permeability dynamic evolution of the abandoned oil and gas reservoir carbon seal storage layer is predicted. And thus, dynamic evolution is realized.

A waste oil recycling system (100) comprises one or more filters having one or more filter nets (1120) operatively coupled to one or more oil drain valves (110). A waste oil input drawer directs waste oil to a waste oil tank, which is operatively connected to the one or more filters (112). The filtered oil flows into a clean oil tank through the one or more oil drain valves (110). The system includes an oil pump (114) operatively connected between the waste oil tank and the one or more filters (112) and one or more sensors (106) configured to detect oil level, pressure on the one or more filter nets, water content, temperature, and contamination. A control module (108), operatively connected to the sensors (106), communication modules, tanks, and pump (114), automates operations based on sensor inputs. A user interface (104) enables data retrieval, monitoring, and control, ensuring automated, efficient oil recycling.

The utility model discloses a waste oil flocculation, filtration and regeneration device and relates to a waste oil purification device. According to the device, a flocculation tank, a filtering tank, a receiving tank, an oil inlet pump, an oil outlet pump, an operation cabinet, an electric heating control cabinet and a vacuum assembly are arranged on a rack; the regeneration path of the waste oil is as follows: waste oil-oil inlet pump-flocculation tank-flocculation tank-flocculation tank-regenerated oil-receiving tank-regenerated oil output by oil outlet pump; the oil inlet pump, the flocculation tank, the filtering tank, the receiving tank and the oil outlet pump are connected in series. Compared with the conventional waste oil regeneration device, the waste oil flocculation, filtration and regeneration device disclosed by the utility model has the following four advantages: firstly, the structure is simple, and the equipment investment is obviously reduced; 2, the device adopts low-temperature regenerated waste oil, so that the energy consumption is low; thirdly, regenerated oil produced by the regeneration device is good in quality; the waste oil regeneration cost is greatly reduced, and the device has popularization value.

The invention belongs to the field of biofuel preparation through grease hydrogenation, and provides a catalyst for biofuel preparation through waste grease one-step hydrogenation and a preparation method of the catalyst. The catalyst is a non-supported NixMoyWz-kHY catalyst, and the preparation method of the catalyst comprises the following steps: uniformly mixing a nickel source, a molybdenum source and a tungsten source according to a certain proportion, adding deionized water and a reaction aid ethylene glycol, dissolving, heating, stirring, adding an ammonia water-ethanolamine mixed solution, complexing, steaming until the pH value of the solution is 7-8, and filtering to obtain the catalyst. And adding a certain amount of HY molecular sieve powder, methyl cellulose (MC) and citric acid into the solution, filtering the reaction solution, drying the filter cake at 120 DEG C, performing extrusion molding, and roasting to obtain the catalyst. The catalyst provided by the invention effectively solves the problems of high oxygen content, difficulty in deep isomerization and the like in the waste oil and fat, has the functions of hydrodeoxygenation, cracking and isomerization at the same time, and realizes one-step conversion of the waste oil and fat into biological aviation kerosene and biodiesel. Besides, the non-supported catalyst adopted by the invention has high-activity center density, the problems of aging and shedding of the carrier are not needed to be worried about, and the preparation method of the catalyst is simple, environment-friendly and pollution-free, and meets the requirements of industrial preparation.