496results about "Multiple-effect evaporation" patented technology

The invention provides an intelligent dynamic flow rate regulation and double-effect crystallization evaporation device which comprises a feeding system, a double-effect evaporation system, a crystallization system, a circulating pump and a flow rate regulation system, the feeding system is connected to the double-effect evaporation system through a pipeline, the double-effect evaporation system is connected to the crystallization system through the circulating pump, and the flow rate regulation system is connected to the crystallization system through a pipeline. The flow rate adjusting system is connected with the circulating pump and the double-effect evaporation system, and the device realizes intelligent dynamic flow rate adjustment through the circulating closed-loop control system, so that the evaporation efficiency and the crystallization quality are optimized. The circulating closed-loop control system comprises a data acquisition unit, a data processing unit, a flow velocity adjusting system, a feedback optimization unit and an abnormity early warning unit, a flow velocity adjusting strategy is optimized based on real-time data, historical data and machine learning, scaling is reduced through disturbance flow velocity control, and the system stability is improved. The evaporation and crystallization efficiency is improved, the energy consumption is reduced, different working condition requirements are met, and the method is suitable for the field of industrial evaporation and crystallization.

The invention relates to the field of enhanced intrinsic safety in a gas-liquid phase mixing process, and discloses a gas-liquid mixing device and a gas-liquid mixing vaporization method. The device comprises a shell, a Venturi gas-phase turbulent mixing section, a liquid-phase atomizing mixing section and a static mixing section are sequentially arranged in the shell in the flowing direction of material flow, the Venturi gas-phase turbulent mixing section comprises a reducing structure and an expanding structure, a liquid inlet component is arranged at the position, close to the reducing structure, of the expanding structure, and the static mixing section is connected with the liquid inlet component. The liquid phase atomization mixing section is provided with a membrane tube base body, the membrane tube base body is provided with a plurality of inner holes in the axial direction, the surfaces of the inner holes are coated with nanometer materials, and the static mixing section is provided with filler. According to the device, the liquid-phase oxidizing agent and the gas-phase oxidizing agent are subjected to multi-stage mixing vaporization, the atomization degree of the liquid phase is increased, the uniformity degree of the obtained mixed gas phase is improved, meanwhile, the device can be quenched after burning explosion by coupling a porous membrane pipe and filler, and the burning explosion risk in the mixing vaporization process is reduced.

The systems of the present disclosure include a solar-powered steam Rankine cycle (SRC) subsystem to convert solar energy into thermal energy and store the thermal energy; an ejector refrigeration cycle (ERC) subsystem to provide a first refrigeration effect with a first range of temperature based on the thermal energy; an absorption refrigeration cycle (ARC) subsystem to provide a second refrigeration effect with a second range of temperature based on the thermal energy; a brine refrigeration cycle (BRC) subsystem to generate and store when there is no cooling demand and provide a third refrigeration effect with a third range of temperature based on the electrical power generated by the ERC subsystem and the ice being melted; and an adsorption refrigeration cycle (ADRC) subsystem to provide a fourth refrigeration effect with a fourth range of temperature based on the thermal energy.

The utility model belongs to the field of wastewater treatment, in particular relates to multi-effect evaporative crystallization wastewater treatment and recovery equipment, and provides the following scheme aiming at the problems that the contact time with steam is difficult to adjust according to wastewater with different concentrations and the concentration process of the wastewater is inconvenient to manage more effectively in the multi-effect evaporative crystallization wastewater treatment and recovery equipment in the prior art. The device comprises a plurality of evaporators, each evaporator comprises a tank body, a liquid inlet end and an air inlet end are arranged on one side of the outer wall of each tank body, a liquid conveying end is arranged at the bottom end of each tank body, and an air outlet end is arranged on the other side of the outer wall of each tank body; the multiple sets of threaded pipes are used for prolonging the contact time of the wastewater and steam, water is gradually evaporated to form steam, solute is gradually concentrated, the steam and the concentrated wastewater enter the next evaporator, harmful substances in the wastewater are effectively separated out in the evaporation and crystallization process, and pollution to the environment is reduced.

The invention belongs to the technical field of impurity separation, and particularly discloses a method for separating and purifying impurities in a process for preparing glyoxylic acid through oxalic acid electrolysis, a crystallization kettle is included, an isolation device is arranged in the crystallization kettle, and the isolation device comprises a conical top cover, a conveying pipe, an annular filter screen, a directional conveying assembly and a sealing assembly; the conical top cover is arranged at the axis of the crystallization kettle, an opening of the conical top cover faces downwards, and a plurality of fixing rods are fixedly connected between the top of the conical top cover and the inner wall of the side face of the crystallization kettle. According to the method, glyoxylic acid product solutions with different concentration specifications and the high-purity glyoxylic acid crystal can be obtained after the electrolyte is sequentially subjected to pre-evaporation, electrodialysis, secondary evaporation, cooling crystallization, solid-liquid separation, washing and drying and other procedures, so that the prepared high-purity glyoxylic acid crystal can be popularized and applied in the field of high-end medicine.

The utility model relates to the technical field of hydrochloric acid desorption, in particular to a hydrochloric acid desorption device which comprises a hydrochloric acid desorption tower, and the top of the hydrochloric acid desorption tower is sequentially communicated with a primary condensing device, a secondary condensing device, a freezing device, a demister and a hydrogen chloride buffer tank; one side wall of the hydrochloric acid desorption tower is communicated with a hydrochloric acid storage tank; the side wall of the hydrochloric acid desorption tower is also communicated with a calcium chloride solution storage tank; a bottom liquid outlet of the hydrochloric acid desorption tower is communicated with a first inlet of the thermosyphon reboiler, the thermosyphon reboiler is provided with a first outlet and a second outlet, the first outlet is communicated with a liquid inlet of the hydrochloric acid desorption tower, and the second outlet is sequentially communicated with the multi-effect evaporation device and the flash separation tank; and the flash separation tank is respectively communicated with a calcium chloride solution storage tank and a second inlet of the thermosyphon type reboiler. According to the utility model, the equipment investment is reduced, the concentration efficiency of the calcium chloride solution is improved, the energy consumption is reduced, and calcium chloride is prevented from flowing back into the desorption tower to cause blockage.

The demister cleaning device comprises a first-effect evaporation module, a second-effect evaporation module, a third-effect evaporation module and a feeding pipe, the first-effect evaporation module, the second-effect evaporation module and the third-effect evaporation module are sequentially connected through the feeding pipe, and a third-effect demister in the third-effect evaporation module is connected to a condenser and a centrifugal water vapor compressor through a three-way pipe. The centrifugal water vapor compressor is connected into a first-effect heater in the first-effect evaporation module through a pipeline; a bypass valve is connected to the pipeline between the condenser and the first-effect heater and connected with the centrifugal water vapor compressor in parallel. A top inlet of the triple-effect demister is connected with a high-pressure water inlet pipe. Secondary steam generated by triple effect is recycled instead of directly entering the condenser to be condensed, the recycled secondary steam enters the centrifugal steam compressor to pressurize the triple effect secondary steam, and the triple effect secondary steam is supplied to the first-effect heater to be used for heating materials to replace original live steam, so that the purposes of saving energy and reducing consumption are achieved.

The invention belongs to the technical field of chemical fertilizer production and livestock feed, and particularly relates to a combined preparation method of water-soluble potassium sulfate and feed-grade potash magnesium sulphate fertilizer. According to the method, the picromerite concentrate wet material is taken as an initial raw material, the picromerite concentrate wet material with relatively low potassium and magnesium content is purified into high-grade potassium sulfate and the potash magnesium sulphate fertilizer by utilizing hot melt mother liquor at different mother liquor points through multi-stage hot melt and multi-stage vacuum evaporative crystallization, so that efficient distribution and conversion of potassium and magnesium elements in the raw material are realized, resource waste is avoided, and the production cost is reduced. The comprehensive utilization rate of raw materials is greatly improved. Two high-added-value products, namely the water-soluble potassium sulfate and the feed-grade potassium-magnesium fertilizer, are prepared at the same time, and the blank of combined preparation of raw materials required by agriculture and animal husbandry is filled.

The present invention relates to the technical field of phosphoric acid solution concentration, and in particular to a system for comprehensive heat utilization in a phosphoric acid concentration device, comprising: an inlet and outlet heat exchanger; a raw acid preheater; a first-stage evaporation separator; a first-stage circulation pump; a first-stage evaporator; a gas-liquid separator; a second-stage evaporator; a second-stage evaporation separator; and a second-stage circulation pump, with defined connections between the various devices. The present invention utilizes an inlet and outlet heat exchanger to eliminate the need for circulating water for cooling finished phosphoric acid, making heat utilization in the concentration process more efficient and reasonable, thereby increasing the economic efficiency of the device. In the present invention, the various devices can effectively cooperate, effectively and reasonably utilizing the heat in the concentration process, reducing steam consumption and increasing the economic efficiency of the device.

The utility model discloses a fin type multi-effect evaporation and concentration device, which comprises a first-effect evaporation and separation device, a second-effect evaporation and separation device, a third-effect evaporation and separation device and a fourth-effect evaporation and separation device, wherein the first-effect evaporation and separation device is used for heating liquid feed to evaporation temperature to evaporate volatile substances so as to realize separation and obtain primary feed; the first-effect fin type heat exchanger is used for evaporation and compression; the second-effect evaporation and separation device is used for further evaporating and separating the vaporized liquid; a coil heat exchanger for evaporation and compression is arranged; and the matching device is used for controlling the first-effect evaporation separation device and the second-effect evaporation separation device. According to the utility model, the spiral plate type heat exchanger is arranged in the heater to collect residual steam of fresh steam in evaporation and concentration, and the heat of the residual steam is used for heating feed liquid, so that the heat exchange efficiency is improved.

The invention belongs to the technical field of heat pump rectification, and particularly relates to a double-effect heat pump rectification system which comprises a first-effect rectification tower feeding pump connected with a preheater, the preheater is connected with a first-effect rectification tower, the first-effect rectification tower is connected with a gas-liquid separator through a screw compressor, and the gas-liquid separator is connected with a tail gas condenser through a second-effect falling film reboiler. The second-effect falling film reboiler is connected with a first-effect reflux discharge pump through a first-effect reflux tank, and the first-effect reflux discharge pump is connected with the preheater; the first-effect rectifying tower is respectively connected with a first-effect falling film reboiler and a first-effect falling film circulating pump; the first-effect rectifying tower is connected with a second-effect rectifying tower through a first-effect tower kettle discharging pump; the first-effect falling film reboiler is connected with a second-effect reflux discharge pump through a second-effect reflux tank; the second-effect falling film reboiler is connected with a second-effect falling film circulating pump and a second-effect rectifying tower, the second-effect falling film reboiler is connected with a second-effect rectifying tower kettle discharging pump through the second-effect rectifying tower, and the second-effect rectifying tower is connected with the first-effect falling film reboiler. According to the invention, double-effect rectification and heat pump rectification are successfully combined, and the cost is low.

The utility model relates to an ammonium phosphate evaporation and concentration system and belongs to the field of chemical engineering. The system comprises a concentrated ammonium phosphate pump, a concentrated ammonium phosphate storage tank, an I-effect evaporation chamber, an I-effect heater, an I-effect circulating pump, an I-effect charging pump, an II-effect evaporation chamber, an II-effect heater, an II-effect circulating pump, an II-effect charging pump, an III-effect evaporation chamber, an III-effect heater and an III-effect circulating pump. By adopting the system and the method, low-pressure saturated live steam is utilized to indirectly heat dilute ammonium phosphate to generate secondary steam and tertiary steam to continuously heat the dilute ammonium phosphate to produce concentrated ammonium phosphate. Compared with a two-effect evaporation concentration process flow which is widely used at present, the three-effect countercurrent evaporation concentration process flow saves energy by 47%. The utility model aims at saving energy, reducing consumption, reducing carbon emission of a production device and protecting the environment.

The utility model discloses an MVR (Mechanical Vapor Recompression) evaporation system for lactic acid production, which comprises a first-effect falling film evaporator, a second-effect falling film evaporator, a third-effect falling film evaporator, a first-stage steam compressor, a second-stage steam compressor and a third-stage steam compressor which are sequentially communicated in series along a material flowing direction, secondary steam generated by the second-effect falling-film evaporator and the third-effect falling-film evaporator is heated by the first-stage steam compressor and then enters the second-stage steam compressor to be compressed into secondary compressed steam, and one part of the secondary compressed steam enters the first-effect falling-film evaporator and the second-effect falling-film evaporator to evaporate and concentrate low-concentration lactic acid; the other part of secondary compressed steam and secondary steam generated by the first-effect falling film evaporator enter a third-stage steam compressor to generate third-time compressed steam, the third-time compressed steam enters a third-effect falling film evaporator to evaporate and concentrate lactic acid, and low-concentration lactic acid is evaporated and concentrated by using high-quality compressed steam; the consumption of fresh steam is effectively reduced, the energy consumption is reduced, and the evaporation and concentration cost is reduced.

The utility model provides a caprolactam rectification heat energy coupling utilization system, which comprises a cyclohexane refining tower, a cyclohexene separation tower and a debenzolization tower which are communicated in sequence, in the system, high-temperature gas-phase materials generated by the cyclohexane refining tower and the cyclohexene separation tower and kettle bottom liquid in the next tower are subjected to heat exchange treatment through a falling film evaporator, and the cyclohexene separation tower and the kettle bottom liquid in the next tower are separated; the feeding temperature of the next tower is increased, so that the heat utilization of high-temperature steam is improved, the use of steam is reduced, and the production cost is reduced; meanwhile, the use of fire coal is reduced, the emission of waste gas is reduced, and the environment is protected.

The application provides a multi-effect desalination system and relates to the technical field of multi-effect evaporation. The multi-effect desalination system can have two working conditions under the action of a first valve, a second valve and a third valve. The first working condition is that the third valve is closed, and the first valve and the second valve are opened. At this time, low-pressure steam discharged by a low-pressure steam generation device is directly introduced into a first-effect evaporator as heating steam. A second condenser can condense part of secondary steam generated by an mth-effect evaporator, so that the pressure in the first condenser and the second condenser is balanced, and the two can work under normal working conditions. The second working condition is that the second valve is opened, the first valve and the third valve are closed, and the second condenser stops working. Medium-pressure steam discharged from a medium-pressure steam generation device is introduced into the mth-effect evaporator to inject the secondary steam generated by the mth-effect evaporator through a steam heat compressor. After mixing, the medium-pressure steam is introduced into the first-effect evaporator as heating steam, so that the energy of the medium-pressure steam can be effectively utilized, and a higher water production ratio is obtained.

The utility model relates to the technical field of wastewater treatment, in particular to a treatment system for wastewater containing high-boiling-point organic matters, which comprises a stripping tower, a feed port of the stripping tower is connected with a wastewater feed pipe, a liquid outlet at the bottom of the stripping tower is connected with a first-effect evaporator through a pipeline, and the first-effect evaporator is connected with a second-effect evaporator through a pipeline. The second-effect evaporator is connected with a third-effect evaporator through a pipeline; the second-effect evaporator is used for receiving an evaporation concentrated solution of the first-effect evaporator, and the third-effect evaporator is used for receiving an evaporation concentrated solution of the second-effect evaporator; a gas outlet in the top of the stripping tower is connected with a condenser through a pipeline; the condenser is connected with a chromatography device through a pipeline; according to the device disclosed by the utility model, heavy components, light components and water can be finally separated and respectively recovered, heavy component materials concentrated by the triple-effect evaporator are rectified and recovered, the light components are waste oil to be sold, and the recovered water is secondarily utilized.

The utility model provides a desulfurization waste water hot concentration and flue gas drying zero emission system, which comprises a heat source unit, a flue heat exchanger and a steam pressure stabilizing module, and low-temperature flue gas is used as a heat source to heat water to generate low-temperature saturated steam; the multi-effect evaporation unit comprises a plurality of evaporation modules, and the evaporation modules are arranged in series to realize step-by-step heating and concentration of wastewater; the conditioning unit is used for adjusting the pH value of the wastewater concentrated solution; conveying the conditioned wastewater concentrated solution to a flue gas drying unit to be evaporated and dried; the condensation vacuum unit is connected with a steam outlet of the evaporation module at the tail end of the multi-effect evaporation unit and is used for condensing and recycling steam; and the condensate water tank is used for collecting condensate water of each stage of evaporation module of the multi-effect evaporation unit. According to the utility model, a wastewater zero-discharge technology is formed through a high-salinity wastewater zero-discharge technology of coupling low-temperature flash evaporation concentration reduction with rotary atomization drying, so that zero discharge of high-salinity wastewater under various process conditions and unit loads is stably realized, and the operation cost of a zero-discharge system is reduced.

The utility model relates to the field of multi-stage evaporation and concentration equipment, and discloses multi-stage evaporation and concentration equipment which comprises a distillation still, a groove is fixedly connected to the inner wall of the top side of the distillation still, a barrel cover is arranged on the inner wall of the groove, and sliding buckles are fixedly connected to the left side and the right side of the barrel cover. Fixing blocks are fixedly connected to the left side and the right side of the top end of the distillation kettle, the outer walls of the fixing blocks are arranged on the inner walls of the sliding buckles, a heating plate is arranged on the inner wall of the distillation kettle, a rack is fixedly connected to the bottom side of the heating plate, and a gear is connected to the bottom side of the rack in a meshed mode. According to the utility model, the barrel cover of the distillation kettle is convenient to install through the matching between the fixed block and the barrel cover, the maintenance and overhaul become more efficient through the cover which is convenient to quickly disassemble and assemble, the heating plate on the inner wall of the distillation kettle is rotatably heated through the matching between the heating plate and the rack, and heat can be more uniformly transferred to liquid through rotation; the heat exchange process is optimized, and the overall energy efficiency is improved.

The application discloses a continuous evaporator and a working method thereof, relates to the technical field of evaporators, and comprises a primary evaporator, a body, an auxiliary component and a matching component, the primary evaporator is communicated with the body through a conveying pipe, a heater is arranged on the primary evaporator, a fixed plate is fixedly connected to the inner wall of the body, a base is fixedly connected to the bottom surface of the body, the auxiliary component is arranged in the body and comprises four auxiliary blocks, intermittent vibration of the four auxiliary blocks is generated through the arrangement of the auxiliary component, the matching component is drivingly connected to the auxiliary component and comprises a displacement plate slidingly connected to the inner wall of the body, the displacement plate is reciprocatingly displaced in the vertical direction and has the features of slow upward displacement and rapid downward displacement through the arrangement of the matching component, and the auxiliary component comprises a main shaft; through mutual cooperation between the above-mentioned structures, the application has the effects of improving overall evaporation efficiency, shortening the time required for boiling of the secondary evaporator and reducing the energy consumption demand.

The bottom of a first-effect heater, the bottom of a second-effect heater and the bottom of a third-effect heater are connected with a feeding pipeline, and discharging openings in the top sides of the first-effect heater, the second-effect heater and the third-effect heater are connected with a first-effect evaporator, a second-effect evaporator and a third-effect evaporator through first horizontal pipelines respectively. Bottom discharge ports of the first-effect evaporator, the second-effect evaporator and the third-effect evaporator are respectively communicated with the bottom side of the heater through return pipelines, and the tops of the first-effect evaporator, the second-effect evaporator and the third-effect evaporator are respectively connected with a first-effect separator, a second-effect separator and a third-effect separator through steam outlet pipelines. Liquid outlets at the bottoms of the first-effect separator, the second-effect separator and the third-effect separator are respectively connected with the top sides of the first-effect evaporator, the second-effect evaporator and the third-effect evaporator, and the third-effect concentrator disclosed by the utility model has the advantages of compact structural design, convenience in maintenance, flexibility in use, high fault tolerance, stability in system operation, high reliability and the like.

The utility model discloses a two-stage falling film MVR (Mechanical Vapor Recompression) evaporation device, which comprises a falling film heater comprising a first accommodating cavity comprising a heating area and a liquid storage area, the heating area is positioned in the middle of the first accommodating cavity, and the liquid storage area is positioned at the bottom of the first accommodating cavity; the heat exchanger is arranged in the heating area; the partition piece is arranged in the liquid storage area, one end of the partition piece and the heat exchanger are arranged at intervals, the other end of the partition piece is connected with the bottom of the liquid storage area so that the liquid storage area can be divided into a first liquid storage cavity and a second liquid storage cavity, the lower end of the first liquid storage cavity is used for communicating with an external first material inlet, and the lower end of the second liquid storage cavity is used for communicating with an external discharging pump; two ends of the first circulating pump are respectively communicated with the first liquid storage cavity and the heat exchanger; the two ends of the second circulating pump communicate with the second liquid storage cavity and the heat exchanger correspondingly. According to the utility model, the heat exchange area of the falling-film evaporator can be effectively reduced while the consumption of live steam is saved, and the purposes of reducing the volume of the falling-film heater and reducing the occupied area are achieved while the operation cost is reduced.

Provided are compositions and processes concerning efficient downstream processing of products derived from organic acids pretreatment of plant materials.

A membrane assembly for extracting water from ambient air or seawater includes a manifold tube surrounded by a membrane web arranged about the manifold tube in a spiral configuration. The manifold tube has an entrance end, an exit end, web entrance ports, and web exit ports. The web membrane has a first osmosis membrane, a second osmosis membrane, a barrier layer positioned between the first osmosis membrane and the second osmosis membrane to form a first fluid flow conduit in fluid communication with the web entrance ports and a second fluid flow conduit in fluid communication with the web exit entrance ports and an end of the first fluid flow conduit. The web membrane also has a first porous structural material layer positioned within the first and second fluid flow conduit, and a second porous structural material layer positioned about the first osmosis membrane.

The embodiment of the application provides a kind of integrated salt-containing wastewater concentration reduction system, including high-temperature heat mass generation absorption integrated tower and low-temperature heat mass generation absorption integrated tower, in the application, the wastewater that can be same or different in high-temperature heat mass generation absorption integrated tower and low-temperature heat mass generation absorption integrated tower can be classified or graded treatment, while, water is heated by gas step by step, and different quality clean water can be obtained, which is beneficial to match sewage grade and the cascade utilization of clean water, to realize the cascade treatment of sewage.

The utility model discloses a maintenance system for a double-effect falling-film evaporator, which relates to the technical field of double-effect falling-film evaporators and comprises a first-effect falling-film evaporator and a second-effect falling-film evaporator. A low-pressure steam inlet pipeline of the first-effect falling film evaporator is connected with a first blind plate valve; a low-pressure steam inlet pipeline of the first-effect falling film evaporator is connected with a secondary steam inlet pipeline of the second-effect falling film evaporator through a first pipeline, and the first pipeline is connected with a second blind plate valve; and a secondary steam inlet pipeline of the second-effect falling film evaporator is connected with a third blind plate valve. On the premise of ensuring the normal overhaul and processing capacity of the double-effect falling film evaporator, the normal production load of the device is stabilized, and the fluctuation of the device caused by overhaul is avoided.

The present disclosure provides a preparation system and a preparation method for xylitol crystals. In the preparation system, outlets of a first centrifuge are connected with an inlet of a hot air drying tank and an inlet of a primary mother liquor storage tank through pipelines, respectively. Outlets of a second centrifuge are connected with an inlet of a second fluidized bed dryer and an inlet of a secondary mother liquor storage tank through pipelines, respectively. An outlet of a dicrystalline sugar dissolution tank is connected with an inlet of a blending tank through a pipeline. An outlet of a tricrystalline sugar dissolution tank is connected with the inlet of the primary mother liquor storage tank. The blending tank is provided with an inlet for a raw material of xylitol hydrogenation solution. An output of an outlet of a first fluidized bed dryer is prepared xylitol crystals.

A cross-feed method for evaporating diluted sugar juice in beet sugar production includes the following steps: The purified diluted sugar juice is fed into a four-effect evaporator for evaporation and concentration; the sugar juice output from the four-effect evaporator is fed into a first-effect evaporator for further evaporation and concentration, using exhaust steam from the power plant to heat the first-effect evaporator, with all secondary steam from the first-effect evaporator supplied as a heat source to the second-effect evaporator; the sugar juice output from the first-effect evaporator is fed into the second-effect evaporator for further evaporation and concentration, with all secondary steam from the second-effect evaporator supplied as a heat source to the third-effect evaporator; the sugar juice output from the second-effect evaporator is fed into the third-effect evaporator for further evaporation and concentration, with 60% of the secondary steam from the third-effect evaporator used as a heat source to the fourth-effect evaporator; the sugar juice output from the third-effect evaporator is fed into a fifth-effect evaporator for further evaporation and concentration, with 80% of the secondary steam from the fourth-effect evaporator used as a heat source to the fifth-effect evaporator. This invention offers high production efficiency, higher steam heat utilization, and good production stability.

The application discloses a kind of liquor vinasse and high-concentration wastewater comprehensive recovery system, including tube bundle dryer, steam source, mixing auger, feed auger, multi-effect evaporation system, surface condenser, wastewater collection tank and vacuum pump, steam source provides steam for tube bundle dryer, tube bundle dryer is used to dry the mixture of vinasse and high-concentration wastewater after evaporation concentration, after washing, waste gas is transported to multi-effect evaporation system, and multi-effect evaporation system uses the waste gas after washing as heat source to evaporate and concentrate liquor high-concentration wastewater, and mixing auger is used to mix vinasse and concentrated liquor high-concentration wastewater.The application uses the waste gas generated when drying vinasse by tube bundle dryer as heat source to concentrate liquor high-concentration wastewater, and after mixing the concentrated wastewater thick slurry and vinasse, they are dried together in tube bundle dryer, and after crushing, the dried vinasse can be used to produce feed and the like, so as to realize the recycling of vinasse and high-concentration wastewater in liquor production process.

The utility model relates to an aluminum oxide mother liquor evaporation system capable of reducing multi-effect evaporation steam consumption, which comprises a plurality of evaporators which are sequentially arranged, a steam jet mixer, a steam outlet pipe and a steam outlet pipe, the steam jet mixer is provided with a steam inlet, a steam suction port and a mixed steam outlet connected with the first-effect evaporator, the aluminum oxide mother liquor evaporation system further comprises a steam supplementing pipeline connected between the steam suction port and the last-effect secondary steam pipeline, and a steam compressor is arranged on the steam supplementing pipeline. Due to the fact that the last-effect secondary steam contains more latent heat, by means of the scheme, the last-effect secondary steam can be used for replacing part of new steam, the latent heat of the last-effect secondary steam is effectively recycled, and energy consumption of an evaporation system is reduced; and meanwhile, the amount of last-effect secondary steam entering the water cooler can be reduced, so that the load of a circulating water system of the water cooler is reduced, and the operation cost of the circulating water system is reduced.