375results about How to "Improve evaporation efficiency" patented technology

The utility model relates to the technical field of rectification equipment, and particularly discloses hydrocyanic acid rectification equipment which comprises a tower body, a tower tray structure arranged in the tower body, a spraying structure arranged at the top of the tower and a liquid separation structure arranged at the bottom in the tower body, the liquid separation structure comprises a connecting ring table fixed on the inner wall of the tower body and a plurality of first separation plates fixed in the connecting ring table, and the bottom surfaces of the first separation plates are not in contact with the inner bottom surface of the tower body. The problems that hydrocyanic acid is easy to polymerize at the tower bottom and hydrocyanic acid residues exist exist.

The invention provides a preparation method of an integrated and dual-channel PCNFs / ZIF8-SA composite aerogel and a product and application thereof, and the preparation method comprises the following steps: step 1, adding sodium alginate SA and ZIF-8 into a PCNFs suspension, and stirring until the SA is fully dissolved until a uniform mixed solution is formed; the PCNFs is PAN / ZIF-8 / lignin / NaCl carbon nanofibers after hydrophilic modification, and the pH value of the PAN / ZIF-8 / lignin / NaCl carbon nanofibers is 7-8; step 2, pouring the mixed solution into a mold, and performing directional freezing in a freeze dryer to obtain a composite aerogel columnar structure with a directional channel structure; 3, hydrophobic modification is conducted on the upper layer of the composite aerogel columnar structure, a hydrophobic layer with a certain thickness is formed, the lower layer of the composite aerogel columnar structure is a hydrophilic layer, and the hydrophobic layer and the hydrophilic layer are integrated. The aerogel disclosed by the invention has a dual-channel integrated special structure including a fresh water channel and a salt extraction channel, accumulated salt can be extracted from a side channel while efficient solar seawater desalination is realized, an evaporation channel is prevented from being blocked, and the evaporation efficiency and the stability of the composite aerogel are well improved.

The invention discloses a biomass photo-thermal interface evaporation material based on a nano TiO2-CNT photocatalytic thermal insulation layer, a preparation method of the biomass photo-thermal interface evaporation material and application of the biomass photo-thermal interface evaporation material in solar-driven interface evaporation, photo-thermal seawater desalination and sewage treatment. The preparation method comprises the following steps: S1, pulp pretreatment: softening pulp and removing saccharides and impurities; s2, preparing a carbonization layer; s3, a photocatalytic heat insulation coating is coated; S3.1, a photocatalytic heat insulation coating solution is prepared, wherein nanometer titania, carbon nanotubes, polyvinyl alcohol and lauryl sodium sulfate are taken and added into water, and a photocatalytic heat insulation layer solution is obtained; s3.2, a photocatalytic heat insulation coating is coated; and S4, pyrrole coating: uniformly coating the carbonized layer of the cactus pulp block with pyrrole, then uniformly coating the carbonized layer coated with pyrrole with the oxidant aqueous solution, and carrying out full polymerization reaction to obtain the biomass photo-thermal interface evaporation material Ppy / CTPS cactus.

The invention provides a photo-thermal material based on RE-MOF, a photo-thermal interface evaporator and a preparation method and application of the photo-thermal material. The photo-thermal material based on the RE-MOF comprises a two-dimensional nanosheet-shaped rare earth MOF material and a polydopamine coating layer on the surface of the rare earth MOF material. According to the photo-thermal material based on RE-MOF, the rare earth MOF material is coated with polydopamine, so that the photo-thermal material has high light absorption capacity and hydrothermal stability, the evaporation efficiency and photo-thermal conversion capacity of a photo-thermal interface evaporator can be effectively improved, the photo-thermal conversion capacity of the photo-thermal interface evaporator can be effectively improved when the photo-thermal material is applied to the photo-thermal interface evaporator, and the photo-thermal efficiency of the photo-thermal interface evaporator is improved. The photo-thermal interface evaporator which is high in sunlight absorption capacity, stable in performance structure, high in photo-thermal conversion efficiency and good in salt tolerance can be obtained.

The utility model discloses a cascade heat pump system which comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first compressor and a second compressor. The first heat exchanger is arranged in an outdoor environment and exchanges heat through an outdoor fan; the second heat exchanger comprises a first passage and a second passage and is used for heat exchange between a refrigerant in the first passage and a refrigerant in the second passage; the first compressor, the first heat exchanger and the first passage form a first cycle; the third heat exchanger exchanges heat with the liquid heat exchange medium; the second compressor, the second passage and the third heat exchanger form a second cycle; the fourth heat exchanger exchanges heat with the liquid heat exchange medium and forms a third cycle with the first heat exchanger and the first compressor; the first cycle and the second cycle are in linkage heating operation or the third cycle is in linkage operation; and the third cycle can be used for refrigerating or heating. According to the utility model, high-efficiency operation and high-efficiency defrosting of the system are realized when the compression ratio is medium and small, the power of an outdoor fan is not increased, and energy and cost are saved.

The invention relates to the technical field of wastewater treatment equipment, in particular to a forced circulation evaporation crystallizer with a refrigeration loop, which comprises a circulation pipe, a preheating chamber, a stock solution pipe, an input outer pipe, an output outer pipe, a compression pipe, a crystallization pipe, a liquid distributor, a flow combiner, a heat exchange outer pipe and a transition pipe, through the superposition design of the heat exchange outer pipe and the heat exchange inner pipe, the heat obtained by the high-salinity wastewater in the single circulation process is greatly increased, the evaporation efficiency of the high-salinity wastewater in the single circulation process is improved, the circulation times required by the treatment of the high-salinity wastewater in unit volume are reduced, and the energy consumption is reduced. Therefore, the use energy consumption of the forced circulation evaporation crystallizer is reduced.

The invention provides a methanol preheating and catalytic cracking system for a methanol engine, a ship and a control method, and belongs to the technical field of ship methanol engines. The problems that an existing methanol engine is difficult in cold start and methanol gasification are solved. The system comprises a methanol engine, a methanol storage tank, a water storage tank, a heat exchanger, an inlet temperature sensor and an outlet temperature sensor, one passage of a third three-way valve is connected with the waste gas output end of the methanol engine, the other passage of the third three-way valve is connected with another cooling water pipeline, and the methanol output end of the heat exchanger is connected with the methanol input end of the methanol engine. The methanol input end is connected with the methanol storage tank, a methanol pump is arranged on a methanol conveying pipeline between the methanol storage tank and the heat exchanger, two passages of the first three-way valve are arranged between the methanol conveying pipelines, and the inlet temperature sensor and the outlet temperature sensor are respectively arranged at a methanol inlet and a methanol outlet of the heat exchanger. The method is mainly used for starting the methanol engine.

The utility model discloses a soy sauce wine cellar bottom water biogas slurry evaporation concentration and crystallization device, which relates to the technical field of wastewater treatment and comprises an evaporation treatment tank body, heat recovery mechanisms are arranged on the side surface and the top of the evaporation treatment tank body, and a rapid evaporation mechanism is arranged at the bottom of the evaporation treatment tank body. The heat recovery mechanism comprises a first extension table and a second extension table, a first hollow plate is fixedly mounted at the top of the first extension table, a heat exchange copper pipe is fixedly connected to the top of the first hollow plate, a condensate water drainage pipe is fixedly connected to the bottom of the first hollow plate, and a second hollow plate is fixedly connected to the top of the heat exchange copper pipe. Steam flows through the inner cavity of the heat exchange copper pipe under the guidance of the flexible air pipe, external cold water flows through the outer wall of the heat exchange copper pipe due to the design of the sealing cover and the water inlet and outlet pipe, the steam can heat the cold water through the heat exchange copper pipe, the heat recovery function is achieved, and the waste rate of energy is reduced.

The utility model provides a sodium hydrosulfide concentration and purification device, and belongs to the technical field of sodium hydrosulfide processing. Comprising an evaporation tank and a separator, a heating chamber is fixed on the inner wall of the evaporation tank, a large flow channel is arranged close to the center of the heating chamber, a small flow channel is arranged on one side of the heating chamber close to the inner wall of the evaporation tank, a central circulating pipe is fixed on the inner wall of the large flow channel, and the evaporation tank is connected with the separator through a pipeline. Through the arrangement of the waterproof motor, the driving fan blade, the driven fan blade and the scraping plate, the waterproof motor drives the driving fan blade to rotate to enable sodium hydrosulfide in the central circulating pipe to forcibly flow downwards, so that the circulating efficiency of the sodium hydrosulfide in the evaporating tank is enhanced, and the evaporating efficiency of the sodium hydrosulfide is improved; sodium hydrosulfide drives the driven fan blades to rotate, the driven fan blades drive the scraping plates to rotate on the inner walls of the small flow channels, the scraping plates scrape off sodium hydrosulfide crystals in the small flow channels, the crystals are prevented from affecting heat transfer, and the evaporation efficiency is further guaranteed.

The utility model discloses a landfill leachate evaporation mother liquor treatment device which comprises an evaporation box, a filter box body is fixedly connected to the upper end of the evaporation box, mounting grooves are formed in the four inner walls of the filter box body, springs are fixedly connected to the tops and the bottoms of the mounting grooves, one end of each spring is fixedly connected with a connecting block, and the other end of each spring is fixedly connected with a connecting rod. A mounting frame is fixedly connected to one side of the connecting block, a filter screen is fixedly connected to the inner wall of the mounting frame, a transmission motor is fixedly connected to the upper end of the evaporation box, a first rotating rod is fixedly connected to an output shaft of the transmission motor, and a first gear is fixedly connected to the outer surface of the first rotating rod; and second gears are symmetrically and rotationally arranged at the top of the evaporation box. And by arranging a connecting frame and a second electric push rod, a cover plate and a sealing plate can be conveniently opened, then the landfill leachate which is not completely evaporated in the evaporation box is discharged, and meanwhile, the interior of the evaporation box is conveniently cleaned.

The invention relates to a mother liquor continuous treatment device, which is used for treating mother liquor containing a high-boiling-point organic solvent, water and salt, and is characterized in that the device comprises a raw material tank, a scraper evaporator, a mother liquor recovery system and a condensation system, the mother liquor recovery system comprises a stirring tank connected with the bottom of the scraper evaporator, a centrifugal machine connected with the bottom of the stirring tank, and a centrifugal mother liquor receiving tank connected with the centrifugal machine; the condensation system comprises a first-stage preheater, a second-stage preheater, a condenser, a tail cooler and an evaporated liquid receiving tank, wherein the second-stage preheater and the condenser are connected with the first-stage preheater, the tail cooler is connected with the condenser, and the evaporated liquid receiving tank is respectively connected with the condenser and the tail cooler.

The invention relates to the technical field of environmental protection and energy, and discloses a fixed grate incinerator which comprises a warm air box, the top of the warm air box is fixedly connected with a containing box, the two sides of the inner wall of the containing box are rotationally connected with discharging plates through rotating shafts, the right side of the containing box is fixedly connected with a discharging cavity, and the bottom of the inner wall of the warm air box is fixedly connected with a warm air pipe. The top of the warm air pipe is fixedly connected with the inner wall of the placing box, the cutting mechanism comprises a blanking plate fixedly connected with the left side of the inner wall of the placing box, and the bottom of the inner wall of the blanking plate is fixedly connected with a rotating cavity. By arranging the cutting mechanism, negative pressure suction force is generated in an absorption bag, and an absorption plate is in contact with the surface of garbage, so that water in the garbage is absorbed into a folding belt, some sealed and packaged garbage can be cut to form a notch, and redundant water on the surface of the garbage is absorbed; and the subsequent evaporation efficiency of water in the garbage is improved.

The invention relates to the technical field of drill bits, in particular to a self-adjusting diamond compact drill bit which comprises a drill bit body, a cutting wing and a diamond compact, a tunneling mechanism is arranged on the side wall of the cutting wing and comprises two arc-shaped cavities formed in the side wall of the cutting wing, and a sliding plate is connected into each arc-shaped cavity in a sealed and sliding mode; an arc-shaped plate is fixedly connected to the side wall of each sliding plate, the other end of each arc-shaped plate is fixedly connected with a diamond compact, a communicating hole is formed between the two arc-shaped cavities, sealing plugs are symmetrically connected into the communicating hole in a sealed and sliding mode, and an arc-shaped rack is fixedly connected between the two sealing plugs. When the diamond compact drill bit enters a hard rock stratum from a soft rock stratum, the memory alloy rod, the gears, the bearing frame and other structures are arranged to drive the diamond compacts to rotate and adjust a certain angle, so that drilling in the hard rock stratum is more facilitated through the adjusted angle of the diamond compacts.

The present invention relates to the technical field of lithium battery manufacturing, and specifically to a compact oven. The compact oven is used for coating and drying pole pieces, and includes an oven chamber for accommodating pole pieces, wherein the oven chamber is provided with an air inlet chamber and an air return chamber on both sides of the pole piece, wherein the air inlet chamber is connected to a multi-slot air nozzle for air outlet, and the air return chamber is connected to the oven chamber, wherein the multi-slot air nozzle is provided with a plurality of air outlet slots at one end thereof close to the pole piece. This solution eliminates the form of the upper and lower hulls, and has a simple and compact structure, and the multi-slot air nozzle has good air outlet uniformity, and the pole piece drying efficiency is high.

The steam generator with the cleaning assembly comprises a fixing frame and a body, and the middle of the top surface of the fixing frame is connected with the body in a penetrating mode. A motor box is fixedly mounted in the middle of the top surface of the body, a driving motor is fixedly mounted in the motor box, and the output end of the driving motor penetrates through the surface of one side of the body and is fixedly connected with a rotating rod; locking assemblies are symmetrically arranged on the surface of the top of the connecting rod; wherein the locking assembly comprises a connecting block fixedly connected with the connecting rod, by arranging the locking assembly, the connecting rod and the scraper which are soaked in water for a long time can be replaced, and therefore the situation that the inner wall of the interior of the body cannot be effectively cleaned due to the fact that the connecting rod and the scraper are prone to being damaged after being used for a long time is avoided; and meanwhile, by arranging a driving gear and a driven gear, the inner wall can be better cleaned, and therefore the heating efficiency of the water source is improved.

The invention discloses a sewage treatment mechanism based on solar energy, and relates to the technical field of sewage treatment.The sewage treatment mechanism comprises a box body, a sewage inlet and a hot air inlet are formed in the box body, a plurality of evaporation plates and baffles are further arranged in the box body, the evaporation plates are arranged from top to bottom, and sediment storage tanks are constructed at the bottoms of the evaporation plates; and the baffle has a first state for blocking the sediment storage tank and disturbing the flow of hot air and a second state for opening the sediment storage tank. According to the sewage treatment mechanism based on solar energy provided by the invention, the sediment storage tank can be blocked through the baffle plate in the first state, and hot air is discharged into the box body through the hot air inlet, so that sewage and the hot air are in countercurrent contact so as to evaporate the sewage; in the process, flowing of the hot air can be disturbed through the baffle in the first state, so that the contact time of the hot air and the sewage is prolonged, and the sewage evaporation efficiency is improved.

A solar evaporator comprises a heat insulation floating block, a plurality of water delivery rods with the water absorption characteristic are perpendicularly arranged on the heat insulation floating block in a penetrating mode, each water delivery rod comprises a water absorption part located below the heat insulation floating block and an evaporation part located above the heat insulation floating block, and the water absorption parts are immersed into a water source to be treated. Hydrophilic photothermal conversion coatings are arranged on the upper surface of the heat insulation floating block and the outer surface of the evaporation part. The water conveying rod forms a water conveying channel, water can be rapidly conveyed to the surface of the evaporator from the bottom of the evaporator, light energy can be efficiently converted into heat energy through the photo-thermal conversion characteristic of the photo-thermal conversion coating, the temperature of the surface of the evaporator is rapidly increased, efficient absorption of solar energy and rapid evaporation of water are achieved, and the device is simple and low in manufacturing cost.

The invention discloses a vacuum spiral dryer, which relates to the technical field of dryers, and comprises an evaporation barrel, a driving motor is arranged on one side of the evaporation barrel, a central shaft is fixedly arranged on a rotating shaft of the driving motor, the central shaft penetrates through the evaporation barrel, a spiral roller and a material stirring rod I are fixedly arranged on the central shaft, and a recovery device is arranged on the lower side of the evaporation barrel. Material carrying plates are uniformly and fixedly mounted on the spiral roller and located at the position away from the center shaft, the multiple material carrying plates are spirally arranged along the center shaft, the center shaft is hollow, and high-temperature liquid is introduced into the center shaft; according to the technical scheme, materials in the evaporation barrel are pushed forwards by the spiral roller when being evaporated, and meanwhile, the material carrying plate can stir the materials, so that the materials are more fully contacted with the interior of the evaporation barrel to be heated for evaporation, the materials are raised, vapor evaporation is more facilitated, and the drying efficiency is greatly improved.

The invention discloses an evaporative crystallization device based on high-concentration wastewater and a zero discharge process, and relates to the technical field of wastewater treatment.The evaporative crystallization device based on the high-concentration wastewater comprises an evaporation tank, and a drainage device is arranged in the evaporation tank; the flow guide device comprises a heat conduction inner barrel fixed in the evaporation tank, an inner ring channel formed in the center of the heat conduction inner barrel, a flow guide pipe fixed in the inner ring channel and a plurality of groups of outer ring channels formed in the heat conduction inner barrel, and the plurality of groups of outer ring channels are sequentially formed from inside to outside by taking the inner ring channel as the center; first water outlets which are arranged up and down are formed between the inner ring channel and the adjacent outer ring channel, and second water outlets are formed between the other outer ring channels. By arranging the drainage device, when entering the evaporation tank, wastewater can sequentially pass through the multiple groups of outer ring channels along the inner ring channel in an S-shaped trend so as to diffuse and flow towards the periphery, so that disorder and stagnation of flow in a traditional system are avoided, and continuous flowability of the wastewater is ensured.

The invention provides concentration equipment for waste hydrochloric acid purification and recovery, and relates to the field of waste hydrochloric acid purification, the concentration equipment comprises a concentration machine table, a supporting plate is mounted in the middle of the concentration machine table, a concentration tower is mounted above the supporting plate, a refrigeration compressor is mounted below the supporting plate, and the concentration equipment further comprises a condensation part, a stirring mechanism, a scraping mechanism and a driving mechanism. A driving motor works to drive a bevel gear II to be meshed with a bevel gear I, so that a hollow shaft pipe is driven to rotate, the hollow shaft pipe stirs and mixes a solution through stirring blades during rotation, the overall evaporation efficiency of the concentration tower is improved, and the bevel gear II synchronously drives a guide rail to move during rotation; when the guide rail moves, the balance rod moves in the retaining groove to keep the height unchanged, and moves upwards when moving in the swing groove, so that the ejector rod is driven to jack the lapping rod, the clamping block is clamped with the butt joint ring, and at the moment, when the stirring rod rotates, the butt joint ring and the scraper are driven to clean the interior of the concentration tower.

The application discloses a double-hearth two-stage heating vacuum distillation furnace, which comprises an evaporation furnace and a condensation furnace which are communicated through a gas passage, wherein the evaporation furnace comprises an evaporation furnace body and at least one top heating mechanism which is detachably arranged on the top of the evaporation furnace body; and the condensation furnace comprises a condensation furnace body, a side heating structure and a furnace cover, wherein the condensation furnace body is divided into a temperature control condensation chamber and a plurality of layers of multistage condensation chambers, and the gas passage can be combined or replaced according to the required reaction conditions of different materials. The vacuum distillation furnace can collect different metals through the gradient change of the temperature of the two hearths, reduces the process of secondary distillation of volatile matters after the furnace is stopped, can complete the processing of diversified raw materials, improves the work efficiency and reduces the processing cost; the modular top heating mode directly radiates heat to the materials, improves the heat utilization rate, can realize the working mode of stopping the furnace without stopping the work, helps to improve the work efficiency, and is convenient for completing the furnace cleaning, maintenance and solid material taking and placing.

The invention discloses a garlic deep processing and drying device, which relates to the technical field of fruit and vegetable drying. The main points of the technical scheme are as follows: the bracket is installed in a swinging component, a knocking component is arranged at the bottom of the bracket, and the swinging component is used to pull the bracket to swing so that the knocking component knocks the bottom of a tray to turn over the garlic slices and improve the evaporation efficiency. The effect is that the swinging component is arranged to pull the bracket to swing, so that the knocking component at the bottom of the bracket knocks the bottom of the tray on the bracket under the swinging, so that the garlic slices on the tray are vibrated, the gas circulation effect is improved, and thus the drying efficiency is improved. An elastic supporting component is also arranged. When the moisture of the garlic slices on the tray is continuously evaporated, the overall gravity of the tray becomes lighter, the pressure on the spring becomes smaller, and the spring lifts the tray, so that the knocking force of the knocking component on the bottom of the tray gradually becomes smaller, thereby avoiding the garlic slices from being broken due to excessive shaking when they are close to a shriveled state, thereby ensuring the appearance of the garlic slice products.

The utility model relates to the technical field of hydrometallurgy water treatment, and discloses a multi-effect horizontal tube falling film evaporator which comprises a front sealing head, a rear sealing head and at least two evaporation devices, the front sealing head, the at least two evaporation devices and the rear sealing head are sequentially connected from front to back, the front sealing head is provided with a steam inlet, and the rear sealing head is provided with a steam outlet; the front tube plate and the rear tube plate are arranged in a front-back spaced mode so as to divide the interior of the evaporation device into a steam inlet chamber, an evaporation chamber and a steam exhaust chamber from front to back, and the steam exhaust chamber of the previous evaporation device is communicated with the steam inlet chamber of the next evaporation device. A steam inlet hole and a front steam outlet hole are formed in the front pipe plate, the rear pipe seal is communicated with the steam exhaust chamber through a rear liquid discharge pipe, a rear steam outlet hole is formed in the rear pipe wall, and the evaporation chamber is communicated with the steam exhaust chamber through the rear steam outlet hole; the heat exchange pipe is arranged in the evaporation chamber in a front-back extending mode and comprises an upper pipe body and a lower pipe body. The evaporator disclosed by the utility model is more uniform in liquid distribution, higher in steam utilization rate, higher in heat transfer efficiency, better in system performance and higher in water yield.

The invention discloses a phosphorus slag field percolate concentrated water evaporative crystallization desalting system which comprises a filtering mechanism, an evaporation mechanism is installed at the lower end of the filtering mechanism, a crystallizer is installed at the lower end of the evaporation mechanism, the filtering mechanism comprises a filtering box and a filtering plate, a liquid inlet pipe is installed at the upper end of the filtering box, and a conveying pipe is installed at the lower end of the filtering box. A plurality of filtering plates are arranged in the filtering box, the diameters of filtering holes of the filtering plates are different, the left ends of the filtering plates penetrate through the filtering box, sealing plates are installed at the right ends of the filtering plates, a matching plate is installed at the left end of the filtering box, and clamping mechanisms are symmetrically installed at the left end of the matching plate. The filtering plate with the corresponding filtering hole diameter can be selected according to the filtering requirement, the percolate concentrated water is stirred through the stirring plate, and the heating evaporation efficiency of the percolate concentrated water is improved; meanwhile, heat exchange is conducted in the annular cavity through the spiral heat exchange pipe, the temperature of the outer surface of the evaporation box is increased, the heat preservation effect of the evaporation box is improved, and heat loss of the evaporation box is reduced.

The invention discloses a process for extracting copper, lead and precious metals by a vacuum distillation method. The process for extracting the copper, lead and precious metals by the vacuum distillation method comprises the following steps: step 1, preparing and pretreating raw materials; 2, plasma pretreatment; step 3, carrying out segmented heating and rotary distillation; step 4, multi-stage condensation; 5, online monitoring is carried out; according to the technology for extracting the copper-containing, lead-containing and precious metal through the vacuum distillation method, metal steam with different boiling points can be accurately separated at different temperature sections through a multi-stage condensation system, follow-up purification steps such as cross contamination, multi-stage condensation and electrolytic refining between the metals are avoided, the purity of the metals can be remarkably improved, and the purity of the copper-containing, lead-containing and precious metal is improved. The final product is ensured to meet the high-quality standard; the boiling point of metal in a vacuum environment is reduced, energy consumption required by heating is reduced, the rotary distiller is used, raw materials are continuously turned over in the heating process, uniform heating is guaranteed, the evaporation efficiency is improved, and residues are reduced.

The invention relates to the technical field of evaporation systems, in particular to a skid-mounted evaporation system and an operation method.The skid-mounted evaporation system comprises a feed preheating unit which comprises a cooling water tank and a preheater, the cooling water tank is connected with a feed pipeline and provided with a heat exchange coil, and the preheater is connected with the cooling water tank; the preheater comprises a discharge waste heat preheater and a condensate water waste heat preheater; the evaporation separation unit comprises an evaporation separator connected with the discharge waste heat preheater and the condensate water waste heat preheater at the same time, a water vapor compressor connected with the evaporation separator, and a condensate water tank connected with the water vapor compressor; wherein the condensate water tank is connected with the condensate water waste heat preheater through the condensate water pump; and the cooling unit comprises a pipeline arranged between the cooling water tank and the water vapor compressor, and a cooling water pump arranged on the pipeline.

The utility model discloses a rotary evaporator which comprises a heating base, a water bath kettle is arranged on the heating base, a connecting base is arranged on one side of the heating base, a lifting device is arranged on the connecting base, and the lifting device comprises a fixed seat connected with the connecting base and a lifting platform vertically connected with the fixed seat in a sliding mode. A rotary seat is arranged on the lifting platform, a distillation bottle and a cooling bottle are respectively arranged on two sides of the rotary seat, the distillation bottle rotates around the central axis of the distillation bottle under the driving of the rotary seat, the bottle body of the distillation bottle is positioned in the water bath kettle, and a spiral pipeline is arranged on the distillation bottle along the surface of the bottle body; the distillation bottle is communicated with the cooling bottle through a rotating seat, and a collecting bottle is communicated below the cooling bottle. During rotary evaporation, high-temperature liquid in the water bath kettle enters the pipeline and flows along the bottle body, even if the bottle body of the distillation bottle rotates, the bottle body exposed out of the liquid level is continuously heated by the high-temperature liquid in the pipeline above the liquid level, and the evaporation efficiency is improved.

The invention relates to a method for separating and purifying PVP (Polyvinyl Pyrrolidone) from silver-containing wastewater. The method comprises the following steps: adjusting PH; performing membrane filtration; performing low-temperature concentration; biochemical oxidation; wherein low-temperature evaporation concentration equipment adopted for low-temperature concentration comprises a tank body separator, a steam compressor and a low-temperature evaporator, the tank body separator is connected with the low-temperature evaporator through a circulating pump and a circulating pipe, and steam is used for the low-temperature evaporator at the top of the tank body separator through the steam compressor; a plurality of film uniformizing pieces which are arranged downwards in a cambered surface shape are fixedly connected in the tank body separator at intervals up and down through a mounting shaft which is coaxially arranged, the liquid outlet end of the low-temperature evaporator communicates with the tank body separator through a plurality of liquid return branch pipes which are connected in parallel, and the liquid outlet ends of the liquid return branch pipes are arranged at the tops of the corresponding film uniformizing pieces in a one-to-one correspondence mode. Liquid is dispersed in a water film shape, the evaporation surface is increased, the evaporation efficiency is effectively improved, the evaporation treatment capacity is improved, and the overall treatment efficiency of silver-containing wastewater is improved.

The utility model relates to the technical field of falling film evaporators, and provides a multi-effect falling film evaporator which comprises a tank body and a stirring structure, the tank body comprises a sealing cover, a feeding pipe, the stirring structure, a splitter plate, an evaporation structure, an air inlet pipe, a discharging pipe, an air outlet pipe and supporting legs, and the sealing cover is arranged at the top end of the tank body; and a feeding pipe is fixed to one side of the top end of the sealing cover, a stirring structure is arranged in the middle of the top end of the sealing cover, and a splitter plate is arranged in the middle of the interior of the tank body. By arranging the evaporation structure, hot air is input into the tank body through the air inlet pipe, the stirring shaft rotates to drive the rotating rod to rotate, the rotating rod drives the driving gear to rotate, and the driving gear rotates to enable the multiple sets of driven gears to drive the evaporation pipe to rotate; and the materials fall into the bottom end of the interior of the tank body after being heated, evaporated and extracted and are discharged outwards through the discharging pipe, so that the evaporation efficiency is improved.

The utility model relates to the technical field of discharging control of a drying machine, in particular to automatic control equipment of the drying machine. According to the technical scheme, the device comprises at least one mass detector which is arranged at the bottom of a drying machine tank body and is used for measuring the net weight of materials in the drying machine tank body; the feeding unit comprises a feeding pipeline formed by connecting a feeding pipe and a first connecting hose, one end of the feeding pipe is connected with the drying machine tank body, the feeding pipe is connected with an MVR evaporator and used for conveying viscous liquid of pre-concentrated liquid to the drying machine tank body, and a feeding flowmeter is installed at the feeding end of the feeding pipe; and the steam unit comprises a secondary steam pipeline formed by connecting a steam pipe and a second connecting hose. According to the utility model, the operation of the machine is controlled by utilizing the concentration ratio of materials and steam before and after the drying machine, so that the operations such as automatic discharge are realized, and the problem that the drying machine cannot realize automatic discharge control due to the fact that the actual liquid level cannot be detected under the condition that a viscous object is irregular at present is solved.