1256results about "Evaporation" patented technology

The invention discloses a p-methyl benzyl chloride production process and a production system thereof, p-xylene side chains and chlorine are subjected to a gas phase substitution reaction under micro negative pressure and visible light catalysis to generate crude methyl benzyl chloride and hydrogen chloride, and 99.0% methyl benzyl chloride, a small amount of benzyl dichloride and 31% hydrochloric acid are respectively generated through rectification and absorption; the device consists of four working sections of chlorination, rectification, hydrochloric acid absorption and distillation. According to the method, the defects in the prior art are overcome, on one hand, chlorine is introduced, and an aromatic ring chlorination reaction is carried out under visible light catalysis; on one hand, a supported catalyst filler is arranged at the bottom of a chlorination tower, and a zeolite molecular sieve modified by long-chain alkylsilane and supported by metal salt is used as a catalyst to catalyze chloromethylation reaction, on the other hand, the hydrophobicity of the modified catalyst is obviously enhanced, and meanwhile, the density of acidic sites is not reduced; the contact opportunity of the catalyst and a reaction substrate is greatly increased, and the catalytic efficiency of the catalyst is improved.

The invention belongs to the technical field of condiment production, and particularly relates to a condiment processing and extracting device and a condiment processing technology.The extracting device comprises an extracting mechanism, a first filtering mechanism, a second filtering mechanism, a residue discharging mechanism and a solvent recycling mechanism, and the extracting mechanism comprises an extracting tank and a control valve block; the control valve block is arranged at a discharging port in the lower end of the extraction tank, the first filtering mechanism is installed on the second filtering mechanism and connected with the control valve block through a pipeline, the second filtering mechanism is connected with the solvent recycling mechanism through a pipeline, and the slag discharging mechanism is installed on the first filtering mechanism and connected with the solvent recycling mechanism through a pipeline. Through cooperation of the combined filter screen and the liquid inlet assembly, the filtering efficiency is effectively improved, the technical problems that the production period is prolonged and the content of residual solids is high are solved, and through cooperation of the control valve block and the first filtering mechanism, the dynamic continuous separation function can be achieved.

The invention discloses a wall scraping type film evaporator, which relates to the technical field of evaporators, and comprises a barrel body, a heating barrel cover arranged on the outer wall of the barrel body, a top cover arranged at the top end of the barrel body and a bottom cover arranged at the bottom end of the barrel body, the liquid distribution disc is arranged in the top cover, is used for detecting the sticky state of the waste liquid according to the weight and is self-adaptively lifted; the first scraping plate and the second scraping plate are arranged on the inner wall of the barrel body and are used for identifying the sticky state of the waste liquid and adaptively switching the two states of efficient scraping wall evaporation and accelerated discharging, and the switching mechanism is used for controlling the switching of the first scraping plate and the second scraping plate according to the lifting of the liquid distribution disc. Lifting is carried out through the weight borne by the upper surface of the liquid distribution disc, the switching mechanism controls the first scraping plate and the second scraping plate to be switched for use, and therefore the first scraping plate or the second scraping plate is switched for film scraping evaporation in a self-adaptive mode according to the content of sticky matter in waste liquid, and the film scraping effect of the waste liquid and the discharging efficiency of the sticky matter are improved.

Methods and systems for separating a first metal from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

The invention provides a polymer devolatilization process and a devolatilization system. The devolatilization process comprises the following steps: heating a polymer raw material containing volatile components to obtain a molten polymer, pressurizing the molten polymer, mixing with an entrainer, and feeding into a falling film device; after sudden pressure drop and heating, the entrainer carries volatile components to be separated from the system, and a devolatilization product is obtained; the mass ratio of the polymer raw material to the entrainer is (10: 1)-(10000: 1). According to the polymer devolatilization process provided by the invention, the entrainer with a low boiling point is introduced into a reaction system, a large number of microbubbles are formed through vaporization of the entrainer and azeotropy of volatile components, removal of the volatile components in the material is enhanced through pressure swing flash evaporation, and extremely low pressure does not need to be reached in a devolatilization device.

The invention relates to an automatic temperature control type concentration device for an industrial biological enzyme preparation, in particular to the technical field of enzyme preparation purification devices. The technical problem that a heating plate cannot conduct targeted heating on the position where enzyme-containing liquid is located is solved. Comprising a support, a heating shell is slidably connected to the interior of the support, a liquid storage tank is fixedly connected to the interior of the heating shell, a hot air pump is installed on the support, the hot air pump is fixedly connected with a first air conveying pipe, the first air conveying pipe is fixedly connected and communicated with the heating shell, and a sealing ring is slidably connected to the interior of the heating shell in a sealed mode. The sealing ring is connected with the outer side of the liquid storage tank in a sealed and sliding mode. The position of the sealing ring is changed along with the change of the liquid level of the stock solution in the liquid storage tank, so that the volume of hot air stored between the heating shell and the liquid storage tank is changed, the heating position of the liquid storage tank is further changed, the volume of the stock solution in the liquid storage tank is heated, and waste of the hot air is avoided.

A method for increasing the yield of an artemisinin crude product belongs to the technical field of artemisinin extraction, and comprises the following steps: an extraction step: adding artemisia apiacea leaves into a petroleum ether solvent, and extracting by combining heating stirring, ultrasonic waves or microwaves; a separation step: carrying out liquid-solid separation by adopting a filtering or centrifuging mode to obtain an artemisinin extracting solution containing artemisinin; a concentration step: evaporating and concentrating the artemisinin extracting solution to obtain an artemisinin concentrated solution; a crystallization step: putting the artemisinin concentrated solution into a crystallization tank for crystallization, and filtering after crystallization to obtain a mother solution and an artemisinin crude product; the crystallizing tank is a cold and hot crystallizing tank provided with a refrigerant ring cavity and a heating medium ring cavity at the same time, the artemisinin extracting solution on the upper portion can be rapidly cooled, meanwhile, the artemisinin extracting solution on the lower portion is kept at the constant temperature, impurities attached to low-temperature crystals can be reduced, the crystallizing speed is increased, and the crystallizing recovery rate of the artemisinin crude product is increased.

A hydrostatic gas bearing with humidity removed by electrical heating. The hydrostatic gas bearing includes a bearing seat, a rotary shaft, an annular throttling component, and a plurality of heating rods. A cavity is provided inside the bearing seat and an inlet pipe is provided on an outer surface of the bearing seat that communicates with the cavity. The annular throttling component is sleeved on the outside of the rotary shaft, with a first gap provided between the annular throttling component and the rotary shaft. The annular throttling component is configured to throttle and cool a medium. A plurality of heating rods are provided in the annular throttling component, arranged circularly along a circumference of the annular throttling component, and configured to heat and vaporize a part in liquid phase in a cooled medium.

Systems and methods for crude oil desalting technology are provided. More specifically, systems and methods for the usage of waste heat from compression to treat high salinity water are provided. The systems and methods generate recycled water streams for desalter treatment. The systems and methods can treat high salinity waters from desalters and dehydrators. The high salinity streams are introduced to the compressed gas streams, where the waste heat causes the water portion of the water streams to evaporate, resulting in a fully or near-saturated gas stream and a concentrated waste water stream. The saturated gas streams are cooled and condensed, and low TDS water is separated from the gas stream in knockout drums. The low TDS water can be reintroduced to the desalting system as wash water, generating a circular water reuse.

A hydrostatic gas bearing is provided that is configured to remove humidity by heat exchanging, including a bearing seat, a rotary shaft, an annular throttling component, and a plurality of heat exchanging tubes. A cavity is provided inside the bearing seat and an inlet pipe is provided on an outer surface of the bearing seat. The annular throttling component is sleeved on the outside of the rotary shaft with a first gap provided between the annular throttling component and the rotary shaft. The first gap goes through the bearing seat to form an exhaust channel therein, and the annular throttling component is configured to throttle and cool a working medium. The plurality of heat exchanging tubes are provided in the annular throttling component, with heat exchanging medium flowing therein, which is configured to heat and vaporize a part of an in-liquid phase in a cooled portion of the working medium.

Provided are a method and an apparatus for continuously dehydrating a paste for manufacturing a lithium-ion secondary battery and recycling a gas used as a drying gas. A method for dehydrating a paste for manufacturing a lithium-ion secondary battery having a viscosity at 100 °C of 30 mPa·s or more and less than 5,000 mPa·s, wherein the paste contains at least one of an electrode active material, a conductive assistant, and a solid electrolyte as a constituent component of a solid content, and contains an organic solvent having a boiling point higher than that of water or having an azeotropic point with water as a dispersion medium, the paste and a drying gas for removing moisture from the paste are brought into contact with each other in a countercurrent or a cross-flow, moisture contained in the paste volatilizes to the gas side from a gas outlet and a gas containing moisture is discharged, and a paste dehydrated to moisture within a range of 1×10 -7 to 1×10 -4 is discharged from a paste outlet. The present invention relates to a method and an apparatus for dehydrating a paste for manufacturing a lithium-ion secondary battery.

The present invention relates to a chemical additive recovery device for textile fabric printing and dyeing, aiming to solve the technical problem of insufficient recovery of chemical additives during current textile fabric printing and dyeing, comprising an air pump connected to the exhaust port of a dyeing machine, a cooler connected to the output end of the air pump, a multi-stage recovery system connected to the output end of the cooler, the multi-stage recovery system comprising a plurality of chemical additive recovery lines and a chemical additive replenishing tank; the chemical additive recovery line comprises a recovery tank; and a gas-liquid separation mechanism and a heater are arranged in the recovery tank. The present invention utilizes the different boiling points of each chemical additive to sequentially increase the temperature to evaporate different chemical additives, thereby recovering the chemical additives in the exhaust gas of the dyeing machine, and then through the concentration detection and liquid replenishment method, the recovered chemical additives are returned to the dyeing machine for reuse. Compared with the recovery method of the prior art, the present invention not only fully recovers, but also avoids the problem of safety risks of chemical additives spilling in the exhaust gas during textile fabric printing and dyeing, and is energy-saving and environmentally friendly.

The invention discloses a concentration device capable of ensuring the stability of an organic solution, and relates to the technical field of organic matter purification, the concentration device comprises a central tower, the interior of the central tower is divided into a concentration cavity and a regeneration cavity left and right, heating devices are arranged in the concentration cavity and the regeneration cavity, one side of the concentration cavity is connected with a liquid inlet pipe, and the other side of the concentration cavity is connected with a liquid outlet pipe. The bottom is connected with a liquid outlet pipe; the first cooling tower and the second cooling tower are arranged on the left side and the right side outside the central tower respectively, condensing devices are arranged in the first cooling tower and the second cooling tower, and liquid outlet pipes are connected to the bottoms of the first cooling tower and the second cooling tower; the rotating disc system comprises rotating discs which rotate on the front surface and the rear surface in the central tower respectively and penetrate through the concentration cavity and the regeneration cavity, the two rotating discs are fixedly connected through a central shaft, and a plurality of adsorption assemblies for adsorbing organic matters are distributed between the two rotating discs around the circumference of the central shaft; according to the invention, efficient concentration and stable protection of the organic solution at low temperature are realized.

The invention relates to a supergravity adiponitrile production system and method, the system comprises a supergravity nitrile reactor, a separation tower, a semi-nitrile evaporator and a refining device, the middle part of the supergravity nitrile reactor is communicated with the lower part of the separation tower through a main pipeline, and the top of the supergravity nitrile reactor is communicated with a main ammonia gas pipeline; the top of the separation tower is respectively communicated with an ammonia recovery pipeline and a water recovery pipeline, and the upper part of the separation tower is communicated with the refining device through a pipeline; and the top of the semi-nitrile evaporator is respectively communicated with the bottom of the separation tower, the main pipeline and the main ammonia gas pipeline through pipelines. The reactor has the beneficial effects that the characteristics of structure, technology and the like of the supergravity reactor are utilized, the reverse concentration gradient of ammonia gas and molten adipic acid is formed in the radial direction of the rotor from inside to outside, the gas-liquid contact specific area is increased, the mass transfer driving force is increased, the reaction rate is increased, reaction products are separated out in the reaction process, and the reaction is accelerated and pushed.

Disclosed herein are systems and embodiments for improving energy efficiency of a chemical separations plant through heat integration. Heat integration may provide heating loops between distillation columns and / or integrated electric heating components configured to supply heat to reboilers in the chemical separations plant. Heat integration may use heat from an associated chemical synthesis plant configured to carry out an exothermic reaction (e.g., production of methanol from CO2 and H2). Such integrated process designs allow for the use of “low-grade” heat, thereby improving energy efficiency. Furthermore, such integrated process designs allow for electrification of exemplary chemical separations plants, replacing the use of steam as a heating medium with more energy efficient and carbon-emission neutral, electrical methods.

The utility model provides a mercury-containing organic wastewater treatment device in a Tibetan medicine processing process. The mercury-containing organic wastewater treatment device comprises a raw water tank, a micro-filtration membrane treatment unit, an electro-catalysis pretreatment unit, a mercury capturing and separating unit and a high-precision filtering unit which are sequentially connected, and the electro-catalysis pretreatment unit is further connected with a comprehensive waste gas purification unit; the mercury capture and separation unit comprises a chalcogenide reaction tank, a PAM reaction tank and a clarification tank which are communicated in sequence; the chalcogenide reaction tank is connected with a chalcogenide dosing device; and the PAM reaction tank is connected with a PAM dosing device. According to the utility model, the processes of filtration, electro-catalysis pretreatment, heavy metal capture, targeted adsorption and solid-liquid separation are adopted to treat a large amount of high-mercury, high-chromaticity, high-suspended-matter and high-COD wastewater generated in the Tibetan medicine zogtai processing process, so that the organic matter content of a water sample can be greatly reduced, the chromaticity of water is reduced, the suspended matter in water is removed, and the mercury concentration in water is reduced.

Methods and systems for separating a first metal from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

A sustainable system for removing and concentrating per- and polyfluoroalkyl substances (PFAS) from water. The system includes an anion exchange vessel having a selected anion exchange resin therein configured to remove PFAS from the water. A line coupled to the vessel introduces a flow of water contaminated with PFAS such that the PFAS bind to the selected anion exchange resin and are thereby removed from the water. A regenerant solution line is coupled to the anion exchange vessel to introduce an optimized regenerant solution to the anion exchange vessel to remove the PFAS from the anion exchange resin, thereby regenerating the anion exchange resin and generating a spent regenerant solution comprised of the removed PFAS and the optimized regenerant solution. A separation and recovery subsystem recovers the optimized regenerant solution for reuse and separates and concentrates the removed PFAS.

Embodiments presented provide for a multirotational counter rotating reactor. The reactor is configured to accept a fluid stream and separate the fluid stream into high quality liquid and gaseous phases through spinning of the sets of discs as well as through performing a heat transfer to the fluid stream.

The invention concerns a short-path evaporator (SPE) (1), comprising a housing (2) with: at least one evaporation section (4, 28), configured to be kept at an evaporation temperature (T1), at least one condensation section (6, 29) associated with the at least one evaporation section, configured to be kept at a condensation temperature (T3), a main inlet (5) for feeding a liquid (26) to be distilled to the at least one evaporation section, a distillate collection device (7) for collecting condensed distillate (8) from the at least one condensation section, a distillate outlet (9) for removing the condensed distillate from the housing, and a main outlet (17) for removing residue (10) from the at least one evaporation section from the housing.

Methods and systems for separating a first metal from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

A reactor for coating particles includes a stationary vacuum chamber to hold a bed of particles to be coated, a chemical delivery system, and a paddle assembly. The paddle assembly includes a rotatable drive shaft and a first plurality of paddles and a second plurality of paddles that extend radially from the drive shaft. The spacing, cross-sections, and oblique angles of the paddles are such that orbiting of the paddles causes the first plurality of paddles and the second plurality of paddles to displace substantially equal volumes in opposite directions in the lower portion of the stationary vacuum chamber.

The invention discloses an NMP wastewater low-temperature recovery system and a method thereof. The recovery system comprises a raw material barrel, a middle barrel, a concentrated liquid barrel, a product pool, a low-temperature heat pump evaporation unit, a low-temperature scraper evaporation unit and a filtering unit, the low-temperature heat pump evaporation unit is communicated with the raw material barrel and the middle barrel, NMP wastewater enters the low-temperature heat pump evaporation unit from the raw material barrel and then is evaporated and separated, distilled water formed by steam condensation is independently collected, and the NMP wastewater is purified into NMP liquid with the concentration of 80%; the low-temperature scraper evaporation unit is communicated with the middle barrel and the concentrated liquid barrel, NMP liquid with the concentration of 80% enters the low-temperature scraper evaporation unit from the middle barrel and then is evaporated and separated, distilled water formed by steam condensation is independently collected, and the NMP liquid with the concentration of 99.9% is purified and discharged into the concentrated liquid barrel; the filtering unit is communicated with the concentrated liquid barrel and the product pool, NMP liquid with the concentration of 99.9% enters the filtering unit from the concentrated liquid barrel to filter impurities, and finally the NMP liquid is discharged into the product pool; the recovery method is applied to the recovery system.

The invention relates to the technical field of nutrient element extraction, and discloses a step-by-step extraction method of organic selenium in natural selenium-rich agricultural products, which comprises the following steps: cleaning, drying and crushing the natural selenium-rich agricultural products into fine powder; then sequentially using an aqueous solution containing a buffer agent, low-concentration ethanol and a high-concentration organic solvent for ultrasonic-assisted extraction to respectively obtain water-soluble, hydrophilic, hydrophobic and fat-soluble organic selenium compounds; and finally, combining the extracting solutions in the steps, and carrying out rotary evaporation concentration and purification treatment to obtain the high-purity organic selenium compound. Through a step-by-step extraction method, different types of organic selenium compounds in natural selenium-rich agricultural products are efficiently extracted by using the aqueous solution, the low-concentration ethanol and the high-concentration organic solvent respectively under low-temperature and mild conditions, so that high purity and biological activity are kept, meanwhile, the process flow is simplified, and the production cost is reduced. The energy consumption and the use of organic solvents are reduced, the environmental pollution is reduced, and the method is suitable for large-scale industrial production.

The utility model discloses a combined ammonia synthesis system combining series connection and parallel connection. The combined ammonia synthesis system comprises a first reaction and heat recovery unit, a second reaction and heat recovery unit, a cold recovery unit, a separation unit, a flash evaporation unit and a compression circulation unit, the first reaction and heat recovery unit is used for carrying out first-stage reaction and carrying out cooling and heat recovery on first-stage reaction gas; the second reaction and heat recovery unit is used for carrying out second-stage reaction and carrying out cooling and heat recovery on second-stage reaction gas; the cold recovery unit is used for respectively condensing the first-stage reaction gas and the second-stage reaction gas which are subjected to cooling and heat recovery and recovering cold energy; the separation unit is used for performing gas-liquid separation on the condensed primary reaction gas and the condensed secondary reaction gas respectively, supplementing the gas separated from the secondary reaction gas and then feeding the gas into the circulator, and supplementing the gas separated from the primary reaction gas and then feeding the gas into the second reaction and heat recovery unit. The system is low in circulation volume, high in synthetic tower operation efficiency, high in catalyst reaction efficiency and low in circulation power consumption.

The invention provides molybdenum sulfide powder, a heavy metal adsorbent, a photo-thermal conversion material, a distillation method, an oxygen reduction catalyst and catalyst ink. This molybdenum sulfide powder contains a 3R crystal structure of molybdenum disulfide. The heavy metal adsorbent according to the present invention contains molybdenum sulfide particles having a median diameter (D50) of 10-1000 nm as determined by a dynamic light scattering type particle size distribution measurement device. This photo-thermal conversion material contains a material containing molybdenum sulfide particles, and generates heat by absorbing light energy.

The present disclosure relates to a production process and device for synthesizing bisphenol A by a resin method, including a condensation reaction unit for performing a catalytic condensation reaction between phenol and acetone to generate bisphenol A, a first-stage adduct crystallization unit for mixing a concentrated solution with adduct crystals recycled after melting and then performing adduct crystallization, a liquid-phase dephenolization unit for melting an adduct to yield a bisphenol A product, a secondary adduct crystallization unit for recycling phenol and bisphenol A from a mother solution, a solvent recycling unit for recycling unreacted phenol and unreacted acetone, and discharging phenol-containing process water for sewage treatment, and a cracking and rearrangement unit for recycling the phenol from the mother solution, and convert bisphenol A, 2,4-bisphenol A and the like therein in the mother solution into the bisphenol A.

The invention relates to a scraper type film evaporator, and belongs to the technical field of evaporators, the scraper type film evaporator comprises a heating cylinder and a scraper plate, a vertical pipe is rotatably arranged in the heating cylinder, the center line of the vertical pipe and the center line of the heating cylinder coincide, the vertical pipe rotates relative to the heating cylinder, and a connecting plate is fixed between the vertical pipe and the scraper plate; a scraper is arranged on the scraper in a sliding mode, the scraper slides in the direction close to or away from the inner wall of the heating cylinder, the end face of the end, close to the inner wall of the heating cylinder, of the scraper is inclined, and the included angle between the inclined face of the scraper and the inner wall of the heating cylinder ranges from 15 degrees to 30 degrees; and a moving assembly used for driving the scraper to move is arranged between the heating cylinder and the scraper. The raw material liquid drying and recycling device has the effects that raw material liquid can be conveniently scraped to be thin, and the drying and recycling efficiency of the raw material liquid is improved.

The utility model discloses a concentration tank for producing food grade calcium propionate, which comprises a concentration tank body, three supporting legs are fixedly arranged at the bottom end of the concentration tank body, a tank cover is fixedly arranged at the top end of the concentration tank body, a driving motor is fixedly arranged at the center of the top wall of the tank cover, the output end of the driving motor is in transmission connection with a rotating rod, and the rotating rod is in transmission connection with the bottom end of the concentration tank body. The concentration tank comprises a tank cover and a rotating rod, the rotating rod is rotatably mounted on the tank cover, a U-shaped scraping plate is fixedly mounted at the bottom end of the rotating rod and attached to the inner wall of the concentration tank body, a rotating plate is fixedly welded to the rotating rod, and an inner gear ring is arranged above the rotating plate. When raw materials are concentrated and processed, the driving motor can drive the rotating plate to rotate through the rotating rod, so that the plurality of stirring rods can rotate through meshed connection of the gear and the inner gear ring when rotating around the rotating rod, the plurality of stirring rods are driven to stir the raw materials, and the stirring uniformity of the raw materials is improved; the concentration effect of the raw materials is improved.

The invention discloses a salt lake brine evaporative crystallization method and device, and the crystallization method comprises the following steps: spreading and straightening a brine absorbing cloth, setting the included angle between the brine absorbing cloth and the horizontal plane to be 80-90 degrees, immersing the lower end of the brine absorbing cloth in brine, and carrying out evaporative crystallization; after evaporative crystallization, the lower end of the halogen absorbing cloth is removed from the brine, and salt on the halogen absorbing cloth is collected; the aperture of the halogen absorbing cloth is lt; the top end of the halogen absorbing cloth is positioned at the height gt above the brine; 7 m. Under the action of wind energy and solar energy, the brine evaporation speed of the brine absorption cloth per unit area is more than 20 times that of the salt pan solar pond per unit area, and the occupied area of the evaporation device and the salt pan can be effectively reduced.