150results about How to "Enable recycling" patented technology

The invention relates to a catalyst for ethylene oxide ring-opening polymerization and a preparation method thereof, and belongs to the technical field of high polymer material synthesis, and the catalyst is a composite structure based on a silicon dioxide nanoparticle loaded bimetal organic complex; a modified nitrogen-containing polydentate ligand is prepared by adopting a special method, is coordinated with metal ions through covalent bonds and is loaded on silicon dioxide nanoparticles; by utilizing the high dispersity and stability of the silicon dioxide nanoparticles and the synergistic catalytic effect of the bimetal organic complex, the catalytic effect is effectively improved, the polymerization process is accelerated, the polymerization stability is enhanced, the polymerization molecular weight is improved, and the distribution is narrow.

The invention discloses a twisting clamping refrigerating and heating device with cold and hot end separation and work recovery functions. The twisting clamping refrigerating and heating device comprises a stator module, a rotor module and a heat exchange module. The stator module comprises an inner gear and an outer gear, and teeth are arranged on partial edges of the inner gear and the outer gear. The rotor module comprises a torsion clamping refrigerant and a loading gear; the heat exchange module comprises an inner cylinder and an outer cylinder. And the loading gear revolves to drive the torsion clamping refrigerant to change the heat exchange position, and rotates to drive the torsion clamping refrigerant to be loaded and unloaded. When the loading gear is meshed with the inner gear, the loading gear rotates in the forward direction, and the torsion clamping refrigerant generates heat due to loading; when the loading gear is meshed with the outer gear, the loading gear rotates reversely, and the torsion clamping refrigerant absorbs heat due to unloading. According to the device, a heat exchange area is effectively separated, the problem of mutual interference of cold and heat is avoided, and the heat exchange efficiency and power are greatly improved; the resilience force generated when the torsion clamping refrigerant is unloaded is transmitted to the loading area, auxiliary power is provided for the loading process, recycling of work is achieved, and the energy utilization efficiency is improved.

The invention relates to the technical field of gear oil injection, and provides a power plant coal mill bull gear oil spraying device which comprises an oil storage tank used for storing oil, one side of the oil storage tank is communicated with a pump body provided with two liquid outlets, the two liquid outlets of the pump body are communicated with a spraying assembly in a coal mill gearbox through oil injection pipes, and the spraying assembly is communicated with the oil storage tank. The spraying assembly is driven by an electric push rod to be stored, a cavity is formed in the other side of the oil storage tank, a motor is installed in the cavity, and two cooling pipes in the oil storage tank are located on the outer wall of the motor in a spiral mode so that energy transmission between the cooling pipes and the motor can be achieved. The phenomenon that the spray head is blocked due to exposure in air is avoided, the spraying efficiency of lubricating oil is ensured, meanwhile, the flowability and the lubricating performance of the lubricating oil are ensured through energy conversion, the lubricating effect is improved, gear abrasion is reduced, the service life of the gear is prolonged, and on the contrary, a certain cooling effect can be achieved on the motor.

The invention discloses a recycling pretreatment structure applied to coke oven tail gas treatment. The recycling pretreatment structure comprises a spraying tower barrel, a supporting base is arranged at the bottom of the spraying tower barrel, a water overflow guide frame is arranged in the spraying tower barrel, a condensed coke separation tower barrel is arranged at the top of the spraying tower barrel, the top of the water overflow guide frame is sleeved with multiple sets of scraping frames, and a filter screen ring is arranged at the bottom of the water overflow guide frame; through the design of the arc-shaped groove, the spraying mist disc, the condensation spiral ring and the like, primary treatment, deep treatment and three-time treatment are achieved, the tail gas purification quality is progressively guaranteed layer by layer, tar is effectively separated and extracted and recycled through an oil conveying pipeline, and the economic benefit and the environmental protection value are improved; the smoke pressure is used for pushing the impeller to rotate and driving related parts to be linked, energy consumption is reduced, a standby motor is arranged, modes can be switched according to needs, working conditions can be flexibly adapted, stable operation of equipment is guaranteed, and cost is reduced.

The present invention provides a lithium sulfide material and a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing organic lithium with an organic solvent, introducing methyl mercaptan to react, and obtaining a crude intermediate product; (2) reacting the crude intermediate product with sulfur vapor under a protective gas atmosphere, and purifying the obtained material to obtain the lithium sulfide material. The method of the present invention has a wide range of raw material sources, mild reaction conditions, and the solvent can be recycled and reused, and can produce high-purity lithium sulfide without generating pollutants.

The invention belongs to the technical field of olefin hydroesterification reaction and catalysts thereof, and particularly relates to a Pd-loaded PAN catalyst, a preparation method thereof and a method for preparing carboxylic ester by adopting the Pd-loaded PAN catalyst. The preparation method of the Pd-loaded PAN catalyst comprises the following steps: performing vacuum drying on PAN, and then pre-oxidizing to obtain pre-oxidized PAN; adding the pre-oxidized PAN into a sulfonating reagent solution, stirring for reaction, taking out, washing and drying to obtain sulfonated PAN; and putting the sulfonated PAN into a Pd compound solution in a dark N2 atmosphere, and filtering, washing and drying after dipping to obtain the Pd-loaded PAN catalyst. According to the preparation method of the Pd-loaded PAN catalyst provided by the invention, the prepared catalyst has many active sites and is applied to preparation of carboxylic ester, so that the catalyst is recycled, and the stability of the catalyst is improved.

The invention discloses a method for recovering scandium and titanium from Bayer process red mud. The method comprises the following steps: (1) drying the red mud; (2) mixing the dried red mud and phosphoric acid, performing acid leaching reaction, and then filtering and drying to obtain pretreated red mud; (3) carrying out acid leaching on the pretreated red mud by adopting a phosphoric acid-hydrogen peroxide system, and carrying out solid-liquid separation to obtain red mud leachate containing scandium and titanium and iron-rich leaching residues; (4) mixing the red mud lixivium containing scandium and titanium with a P204 extracting agent, stirring, oscillating and carrying out oil-water separation to obtain a scandium-loaded organic phase and a titanium-containing lixivium, and carrying out acid pickling on the organic phase for multiple times; and (5) adding ammonia water into the titanium leachate to adjust the pH value, heating and stirring, standing and precipitating to obtain amorphous titanium phosphate, and carrying out acid pickling after solid-liquid separation. According to the method, scandium and titanium in the red mud are separated and recycled in a two-stage acid leaching-extraction-precipitation combined mode. The selectivity of scandium and titanium is improved. And technical support is provided for recovery of scandium and titanium and comprehensive utilization of red mud.

The utility model relates to the technical field of conveyor belt cleaning equipment, in particular to a chemical fertilizer conveyor belt self-cleaning device. The cleaning device comprises a machine frame, a conveying belt installed on the machine frame, a bracket arranged below the machine frame, a box body capable of moving towards the conveying belt for adjustment is arranged on the bracket, two sets of cleaning pieces capable of transversely moving in a reciprocating mode are installed in the box body, and the two sets of cleaning pieces are arranged up and down. The working face of the cleaning piece makes contact with the surface of the conveying belt. According to the cleaning device, the cleaning piece is in contact with the surface of the conveying belt, the cleaning operation is completed in the rotating process of the conveying belt, the cleaning efficiency is effectively improved, the cleaning piece can transversely move in a reciprocating mode in the cleaning process, the cleaning effect is improved, and cleanliness of the surface is guaranteed.

The utility model discloses a seedling culture incubator for agricultural modernization production, which comprises a base, universal wheels are fixedly connected to the bottom of the base close to four corners, a box body is fixedly connected to the top of the base close to the right side, and partition plates are fixedly connected to the left and right sides of the inner cavity of the box body close to the top. When the seedling culture device is used, impurities in redundant water can be filtered through the arrangement of the metal filter screen, and the filtered water is guided into the water storage tank, so that the water is recycled, and the seedling culture cost is reduced; meanwhile, through mutual cooperation of a first single-groove wheel, a second single-groove wheel, a belt, a rotating rod, a cam, a top plate, a sliding block, a sliding groove, a first spring and a steel ball, the steel ball is driven to move up and down in a reciprocating mode to knock and vibrate the metal filter screen in the left-right moving water spraying process of a spray head, and it is avoided that impurities in water block meshes of the metal filter screen, and the filtering efficiency is affected; and therefore, the water can be fully recycled.

The invention discloses a graphite electrode surface optimizing and grinding device, and relates to the technical field of graphite electrode grinding. The device comprises a mounting outer frame, a grinding mechanism is arranged at the top end of the inner side of the mounting outer frame, material moving mechanisms used in cooperation with the grinding mechanism are arranged on the two sides of the interior of the mounting outer frame, and a cleaning mechanism used in cooperation with the material moving mechanisms is arranged at the lower end of the mounting outer frame. Through cooperative use of the grinding mechanism and the material moving mechanism, two to-be-ground graphite electrode bars with different sizes can be clamped and fixed and are respectively driven to horizontally move, position and rotate, and two driven gears can be driven to rotate through a driving gear, so that two grinding rotating rods can be driven to rotate; and the two heat conduction ring tanks can be driven to synchronously rotate with the grinding sleeve roller, so that the surfaces of two to-be-ground graphite electrode bars with different sizes can be subjected to optimized grinding treatment at the same time, and the grinding efficiency and practicability of the graphite electrode surface optimized grinding device are effectively improved.

The invention belongs to the field of gas technical purification, and particularly relates to a honeycomb-shaped high-concentration NO2 adsorption trapping material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing adsorbent slurry by taking high-silicon molecular sieve raw powder as a raw material; (2) putting a honeycomb carrier into the adsorbent slurry for dipping and coating; and (3) naturally airing, drying and roasting the impregnated carrier to obtain the integral honeycomb-shaped high-concentration NO2 adsorbing and trapping material. On the basis of the honeycomb-shaped high-concentration NO2 adsorption trapping material (the molecular sieve silica-alumina ratio is 1000-5000), NO2 is efficiently trapped through a pressure swing adsorption technology, meanwhile, the adsorbent subjected to adsorption saturation is reversibly regenerated, high-concentration NO2 desorbed gas is obtained, NO2 recycling is achieved, NOx tail gas of a nuclear industry post-treatment plant is recycled, and the purpose of recycling the NOx tail gas of the nuclear industry post-treatment plant is achieved. A stable NO2 gas source is provided for a spent fuel post-treatment main process, the dual requirements of NO2 raw material preparation and tail gas denitration of a post-treatment plant are met, and purification and recycling of NO2 are achieved.

This invention relates to the technical field of fire hydrants and discloses an intelligent fire hydrant with water consumption monitoring function, comprising: a hydrant end cap at the upper end of the hydrant body assembly, and an equipment assembly installed inside the hydrant end cap; a transparent detection window on the hydrant body assembly, a rod inside the transparent detection window, a central rotating shaft installed on the inner side of the transparent window assembly, and a rotating scraper on the central rotating shaft; the rod can detect the water level in the hydrant body in real time, and the rotating scraper can clean the dirt on the surface of the transparent window assembly; this invention, through the coordinated linkage structure of the float, rod, and float plate inside the transparent detection window, combined with the visual observation slot design of the transparent window assembly, realizes real-time accurate monitoring and intuitive visual feedback of water consumption in the fire hydrant, effectively solving the technical pain points of traditional fire hydrants lacking convenient monitoring methods and having difficulty in accurately controlling water consumption.

The invention relates to the technical field of steelmaking. The invention relates to a preheating method, in particular to an environment-friendly waste steel preheating method and system. Aiming at the problem that dioxin can be generated in an existing waste steel preheating technology, the environment-friendly waste steel preheating method and system are provided, greenization of an electric furnace is promoted, waste heat utilization of flue gas of the electric furnace and green preheating of waste steel are achieved, and greenization and efficient smelting of the flue gas of the electric furnace are achieved at the same time.

This invention relates to the field of industrial unmanned aerial vehicle (UAV) technology, specifically a hydrogen fuel cell and lithium battery hybrid UAV. The UAV includes a fuselage, a high-pressure hydrogen storage tank fixedly mounted on top of a gas cylinder mounting base, a battery stack mounted on the bottom of a mounting frame assembly, and a circuit control module located inside the mounting frame assembly. This hydrogen fuel cell and lithium battery hybrid UAV, based on multi-source data fusion and a sliding window anti-disturbance design, achieves accurate identification of all operating conditions, including steady-state cruise, high-power transients, surplus recharge, and regenerative braking. It is equipped with a differentiated intelligent power allocation algorithm, enabling a dynamic allocation strategy that allows for continuous and stable main power supply from the fuel cell during cruise, coordinated lithium battery replenishment during high-power conditions, and real-time recharge of the lithium battery with surplus power. Through a power change rate feedforward compensation design, it maximizes the utilization of the high energy density of hydrogen energy while simultaneously achieving energy recovery and reuse, further improving the system's energy utilization rate.

The utility model belongs to the field of agricultural instruments, and particularly relates to an agriophyllum squarrosum recycling device which comprises an agriophyllum squarrosum recycling body and a conveying supporting plate, the agriophyllum squarrosum recycling body is fixedly installed on the upper surface of the conveying supporting plate, the agriophyllum squarrosum recycling body comprises an air exhaust assembly, a cutting assembly and a storage cavity, and the air exhaust assembly is in threaded connection with the upper portion of the cutting assembly; the storage cavity is in threaded connection below the cutting assembly; the cutting assembly comprises a stepped cutting cavity and cutting blades, a supporting seat is integrally connected to the bottom of the stepped cutting cavity, a rotating shaft is fixedly connected to the center of the supporting seat, a plurality of sets of cutting blades are fixedly connected to the rotating shaft, and the cutting blades are longitudinally and fixedly installed on the rotating shaft at equal intervals; when the agriophyllum squarrosum is conveyed into the cutting assembly, the agriophyllum squarrosum can be smashed and collected into the storage cavity through cutting of the multiple sets of cutting blades, the processed agriophyllum squarrosum can serve as medicine, organic fertilizer and feed, recycling is achieved, and more economic benefits are brought.

The invention belongs to an amide intermediate treatment device and method for hydrazine hydrate production. Comprising a concentration tank, the concentration tank is provided with a water-phase reaction liquid inlet pipeline and a catalyst inlet, the catalyst inlet is connected with a quartz sand catalyst preparation unit, an outlet of the concentration tank is connected with a concentrated material inlet of an intermediate recovery kettle, and the intermediate recovery kettle is further connected with an ammonia feeding pipeline. An ammoniation liquid outlet of the intermediate recovery kettle is connected with a separation and recovery unit, and a liquid phase outlet of the separation and recovery unit is connected with a hydrazine compound synthesis section; a steam discharge pipeline is arranged at the top of the concentration tank; the method has the advantages that moisture in the water-phase reaction liquid can be removed, ammonium formate is converted into formamide and recycled, meanwhile, metal ions are prevented from being contained in ammoniation liquid, and further, the treatment cost is reduced and continuous treatment is achieved on the basis of energy conservation and consumption reduction.

The utility model provides a kind of industrial silicon powder granulating device, comprising: granulator body, the screening device of being equipped in the discharge port below of granulator body, the conveying plate of being fixed in the discharge port below of screening device, the powder elevator of being equipped in granulator body, conveying plate side, the inlet of powder elevator of being equipped in the lower end of conveying plate, the discharge port of powder elevator being equipped in the above of granulator body;Through above-mentioned scheme, screening device can promptly, effectively screen the particle produced by granulator, effectively separate qualified particle meeting granularity requirement and unqualified particle or powder, powder recycling is realized by powder elevator, avoid the waste of powder, reduce the consumption of raw material, reduce the raw material procurement cost of enterprise.

The present application provides a remanufacturing method of a process box and a regenerated process box, wherein the process box is detachably mounted on an electronic imaging device to provide a developer for electronic imaging. A chip assembly electrically connected to the electronic imaging device is provided at one end of the process box in the length direction. The remanufacturing method includes removing a chip fixture on the chip assembly and machining the chip fixture. By processing the chip fixture, rational utilization of resources is achieved. Multiple chips can be used compatibly, thereby improving the versatility of the regenerated process box.

The invention belongs to the technical field of olefin hydroesterification reaction and catalysts thereof, and particularly relates to a sulfonic acid resin-based Pd catalyst double-modified by a sulfonic acid group and a phosphine ligand, a preparation method of the sulfonic acid resin-based Pd catalyst and application of the sulfonic acid resin-based Pd catalyst in olefin hydroesterification reaction. The preparation method of the sulfonic acid resin-based Pd catalyst comprises the following steps: adding halogen into sulfonic acid resin in a dark place, and refluxing alkali liquor to obtain halogenated sulfonic acid resin; carrying out reflux reaction on the phosphine ligand and a deprotonation agent to obtain a phosphine ligand precursor; dropwise adding a phosphine ligand precursor into the halogenated sulfonic acid resin for reaction, and adding an acidic solution to obtain dual-modified sulfonic acid resin; and adding sulfonic acid and phosphine ligand double-modified sulfonic acid resin into the Pd compound, carrying out impregnation reaction, and drying to obtain the sulfonic acid resin-based Pd catalyst. When the sulfonic acid resin-based Pd catalyst is used for preparing organic carboxylic ester, the product is easy to separate, the corrosion to equipment is small, the repeated utilization rate of the sulfonic acid resin-based Pd catalyst is high, the reaction conditions are mild, the raw material application range is wide, and the product selectivity is high.

According to the turnover box type house steel foundation cross beam and longitudinal beam assembly, a plurality of front side cross beams can be connected in a left-right mode through front side cross beam fixing plates, a plurality of rear side cross beams can be connected in a left-right mode through rear side cross beam fixing plates, and a plurality of single cross beams can be connected in a left-right mode through single cross beam fixing plates. A plurality of double-interval cross beams can be connected left and right through double-interval cross beam fixing plates, short longitudinal beams or long longitudinal beams can be connected behind front side cross beams through web fixing plates, short longitudinal beams or long longitudinal beams can be connected in front of rear side cross beams through web fixing plates, and short longitudinal beams or long longitudinal beams can be connected in front of and behind single-interval cross beams through web fixing plates. The front portion and the rear portion of the double cross beams can be connected with the short longitudinal beams or the long longitudinal beams through the web fixing plates, and therefore multi-truss rectangular frame structures of various shapes can be erected. The H-shaped steel can be quickly assembled and disassembled, can be repeatedly used, is ingenious in design and simple in structure, realizes the recycling of the H-shaped steel, and reduces the construction cost.

The invention discloses a two-way stiffening earthing corrugated steel plate arch bridge containing waste tire fragment filler. The arch bridge is composed of a steel skewback, a corrugated steel plate arch ring, a corrugated steel web stiffening arch, a corrugated steel web stiffening beam, a steel bracket, an angle steel connecting piece, a reinforcing piece, waste tire fragments, compacted sand and a bridge deck. The waste tire fragments are light in dead weight and compressible, the positive soil arch effect can be easily formed, the deformation and stress level of the corrugated steel plate arch ring is greatly reduced, meanwhile, solid waste recycling is achieved, the influence on the environment is extremely small, and the concept of ecological environmental protection is met. The steel skewback can greatly reduce the stress of the foundation, is suitable for differential settlement of the foundation, and greatly strengthens the applicability of the arch bridge in bad foundations; the steel bracket is suitable for connection of corrugated steel web stiffening beams and stiffening arches with any wing plate width and corrugated steel plate arch rings. Rigidity, buckling resistance and bearing capacity of the corrugated steel plate arch ring are remarkably improved through the corrugated steel web stiffening beams and the stiffening arches which are arranged in a crossed mode, and the spanning capacity of the arch bridge is greatly enhanced.

The invention discloses a method for recycling and reusing waste lithium-ion battery positive electrode materials, which comprises the following steps: discharging and disassembling waste lithium-ion batteries to obtain positive electrode sheets; adding mixed salt and calcium oxide to the positive electrode sheets and mixing them, and calcining them at a predetermined temperature to obtain waste lithium-ion battery positive electrode materials; adding conductive substances, ethanol and lithium sheets to half of the waste lithium-ion battery positive electrode materials for cleaning, and mixing the other half with an electron-ion dual conductive polymer and subjecting them to a first tempering treatment to obtain a first positive electrode material and a second positive electrode material; mixing the first positive electrode material and the second positive electrode material, and then subjecting them to air flow milling and a second tempering treatment to obtain the positive electrode material. The method of the invention can realize efficient separation of positive electrode materials and aluminum foil without high temperature and long time, is simple to operate, has low energy consumption and a short cycle, and provides a new idea for separation, recycling and reuse of waste lithium-ion battery positive electrode materials and aluminum foil, and has great application prospects.

The utility model discloses a sand core finishing and discharging device which comprises a core finishing unit and a discharging unit, the core finishing unit comprises a fixed base, a mechanical arm and a core finishing floating main shaft, and an air cylinder in driving connection with the core finishing floating main shaft is arranged on one side of the fixed base; the discharging unit is sequentially provided with a sand core fixing table, a discharging sliding table and a moving tool from top to bottom, a supporting column, a limiting wheel support and a positioning column are arranged on the sand core fixing table, a discharging hole is formed in the sand core fixing table, a material collecting hole corresponding to the discharging hole is formed in the top of the discharging sliding table, and discharging side holes are formed in the two sides of the discharging sliding table. The bottom of the discharging sliding table is in sliding connection with a guide rail on the movable tool. Through the arrangement, the sand core during transportation after core repairing is finished is protected, the situation that the sand core is collided and damaged in the core repairing process is prevented, and the sand core production success rate is increased; and dust raising caused by a large amount of waste generated during core repairing is prevented, a good working environment is maintained, the health of workers is protected, the waste is collected more conveniently, and recycling and reusing of the waste are achieved.

The invention discloses a waste heat recycling method for a heat exchanger and a flash tank replacing a tubular furnace, and relates to the field of waste heat recycling in the industrial debenzolization process, the waste heat recycling method comprises the following steps: collecting steam generated during coke oven operation in real time, and dynamically adjusting the temperature and pressure of the steam through the design of a water circulation cooling device and a multi-stage pressure reducing valve; introducing the cooled and depressurized steam into a heat exchanger, evaluating the heat exchange deviation between the steam and the pressurized crude oil in the crude benzene area based on the type of the crude oil, and adjusting the flow output of a circulating pump; conveying the crude oil subjected to heat exchange to a debenzolization tower, evaluating the debenzolization efficiency based on an infrared spectrum technology, and if the debenzolization efficiency does not reach the standard, carrying out heat exchange again and conveying the crude oil to the debenzolization tower; and the condensed steam after heat exchange is input into a flash tank, and the low-pressure saturated steam after pressure reduction is merged into a low-pressure steam pipe network to realize secondary recovery of the steam.

The invention discloses a tea garden sloping field surface runoff nitrogen and phosphorus multi-stage treatment and recovery system and method, and the system comprises a tea garden sloping field and a drainage ditch arranged in the tea garden sloping field, and further comprises a multi-stage permeable reactive barrier and a multi-stage soil seepage ditch which are arranged in the tea garden sloping field, the multi-stage permeable reactive barrier comprises at least three stages of permeable reactive barriers which are arranged in parallel at intervals; the multiple stages of soil seepage ditches are arranged close to the last-stage permeable reactive barrier and comprise water collecting ditches which are arranged in parallel in the direction perpendicular to the sloping field, M-shaped soil bricks are arranged in the water collecting ditches, pebbles are filled in the water collecting ditches, and the upper portions of the water collecting ditches are filled with vegetation belts; and the surface runoff passing through the multi-stage permeable reactive barrier enters the multi-stage soil seepage ditch and overflows to the drainage ditch of the tea garden slope through the multi-stage soil seepage ditch. By coupling the multi-stage permeable reactive barrier and the multi-stage soil seepage ditch technology, nitrogen and phosphorus pollution driven by runoff of the southwest tea garden is effectively prevented and controlled, and nitrogen and phosphorus are effectively recovered.

The invention discloses a carbon fiber production waste liquid recycling process, which comprises: (1) inputting a waste liquid containing acrylonitrile and dimethyl sulfoxide into an acrylonitrile recovery tower, controlling the pressure and the temperature, enabling acrylonitrile and a part of water to form a gas phase, and separating the gas phase from the tower top to obtain dimethyl sulfoxide and water at the tower bottom; (2) dimethyl sulfoxide and water at the bottom of the acrylonitrile recovery tower sequentially enter a first-stage dehydrating tower, a second-stage dehydrating tower and a third-stage dehydrating tower, water is discharged from the tops of the dehydrating towers, and dimethyl sulfoxide at the bottom of the tower is purified step by step until the concentration reaches 99.5% or above; and (3) the purified dimethyl sulfoxide enters a rectifying tower, the pressure and the temperature are controlled, dimethyl sulfoxide impurities exist at the tower bottom, dimethyl sulfoxide forms a gas phase, the gas phase is discharged through the tower top, and after condensation and recovery, a pure dimethyl sulfoxide product without impurities is obtained. The process is efficient, environment-friendly and energy-saving, and the recovery rate of acrylonitrile and dimethyl sulfoxide is high.

The invention provides an industrial test system for simulating long-distance pipeline conveying of slurry, which comprises a feeding system, a slurry making system, a pumping system, a ring pipe system, a dehydration system, a water loss pipeline, a waste slurry treatment system and a control system, the feeding system is used for conveying materials to the slurry making system, the slurry making system is used for preparing material particles into slurry and conveying the slurry to the pumping system, and the ring pipe system is used for conveying the slurry to the ring pipe system. The pumping system conveys slurry to the annular pipe system through a slurry pump, the annular pipe system comprises three pipelines, the middle sections of the pipelines are further provided with water loss pipelines used for simulating the slurry water loss condition, the annular pipe system is further connected with a dewatering system, and after simulation is finished, materials are recycled after being dewatered through the dewatering system. All the systems operate in a linkage mode and are controlled through a control system, and the control system is specifically a ShenWei SCADA system. The linkage device provided by the invention can be used for simulating safe and stable transportation under the conditions of pipeline transportation and working condition change, and provides theoretical analysis and design basis for a slurry transportation technology.

The utility model relates to metallographic sample preparation equipment. Comprising a sample preparation device, a spray head is arranged on the sample preparation device, the purification mechanism comprises a water collecting tank, a solution inlet and a solution outlet are formed in the two ends of the water collecting tank respectively, the solution inlet is connected with a liquid outlet of the sample preparation device, and the solution outlet is connected with the spray head. The interior of the water collecting tank is divided into a plurality of settling areas, the settling areas are sequentially distributed in the direction from the solution inlet to the solution outlet, every two adjacent settling areas are communicated, and an electromagnet is arranged in at least one settling area. The sample preparation device is connected with the water collecting tank, flushing fluid is sequentially settled in the settling area of the water collecting tank, the electromagnet in the settling area can effectively remove fine scrap iron in the solution, and purified water can be recycled, so that water resources are recycled.

The invention relates to fermented soybean meal as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing all fermentation raw materials required by fermentation of the current batch to prepare a fermentation material; and fermenting the fermentation material until the content of a target component in an obtained fermentation system reaches a preset level, and preparing fermented soybean meal, wherein the fermentation raw materials comprise fermentation water, crushed soybean meal, zymophyte and enzyme; the fermentation water contains condensate water obtained by condensing dry tail gas generated by drying other batches of fermented soybean meal. According to the application, the fermented soybean meal is prepared in a biological fermentation and enzymolysis combined manner, and condensate water obtained by condensing dry tail gas generated by drying other batches of fermented soybean meal is added into the fermentation water, so that the recycling of the condensate water is realized; the time consumed from fermentation to the time when the content of the target component in the obtained fermentation system reaches the preset level is not obviously prolonged, the utilization rate of fermentation equipment is increased, and the fermentation cost is reduced.

The utility model discloses a preparation device of glucose stevioside, and relates to the technical field of glucose stevioside production, an inlet of a conversion tank is respectively communicated with a raw material tank, an auxiliary material tank and a cyclodextrin glucoside transferase tank, an outlet of the conversion tank is communicated with a hydrolysis tank, an outlet of the hydrolysis tank is communicated with a reaction tank, and the reaction tank is communicated with a reaction tank. The inlet of the reaction tank is respectively communicated with a sucrose tank, a sucrose synthase tank, a uridine diphosphate tank, a first UGT glycosyltransferase tank, a second UGT glycosyltransferase tank and an alkali liquor tank; an outlet of the reaction tank is communicated with a first macroporous adsorption resin column, an inlet of the first macroporous adsorption resin column is communicated with a first ethanol tank, an outlet of the first macroporous adsorption resin column is communicated with a first concentration tank, and a lower outlet of the first concentration tank is communicated with a first dryer; and an outlet of the first dryer is communicated with a first glucosyl stevioside tank. And the residual substrate is converted into stevioside with relatively better taste, so that the taste and quality of the product are improved.