193results about "Evaporation with vapour compression" patented technology

A method for starting up vapor-recompression units comprises: providing a vapor recompression sub-system comprising one or more vapor-recompression units, wherein the vapor recompression sub-system has a vapor inlet and a compressed-vapor outlet; providing a means of reducing vapor density through pressure reduction in vapor communication with the vapor recompression sub-system; reducing pressure within the vapor recompression sub-system to reach a sub-system pressure selected from 0.1 kPa to 1000 kPa; introducing a vapor mass flow to the vapor recompression sub-system at a restricted vapor mass flow rate; starting up the vapor recompression sub-system while maintaining the restricted vapor mass flow rate for a start-up time period; and then, following the start-up time period, introducing additional vapor mass flow to the vapor recompression sub-system to reach a full vapor mass flow rate. The restricted vapor mass flow rate is from 0.1% to 90% of the full vapor mass flow rate.

The embodiment of the invention provides an evaporation system control method and an evaporation system, and relates to the technical field of control, the method is applied to a control system in an MVR evaporation system.The method comprises the steps that in response to a starting instruction, a feeding system is controlled to pump to-be-treated liquid into an evaporation crystallization system, and the real-time boiling point rise of the evaporation crystallization system is monitored; and determining to adopt an optimal recovery rate control mode or a boiling point rise control mode as a target control mode based on the real-time boiling point rise, and controlling the feeding system, the evaporative crystallization system and the water production system to treat the to-be-treated liquid according to a preset strategy corresponding to the target control mode, the frequency of the distilled water and the flow of the to-be-treated liquid pumped by the feeding system meet the corresponding recovery rate, so that the control intelligence and reliability of the MVR evaporation system are improved.

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 discloses a vibration plate type anti-scaling MVR evaporator, and relates to the technical field of MVR evaporators. Comprising a compressor, a heater, a separator, a circulating pump and a heat exchanger which are connected with one another, the side end face of the heat exchanger fixedly communicates with a cold side inlet pipe and a hot side inlet pipe, the cold side inlet pipe is located on one side of the hot side inlet pipe, and an L-shaped fixed plate is fixedly installed on the side end face of the heat exchanger and located on the outer side of the cold side inlet pipe; an intercepting assembly is arranged on the L-shaped fixed plate; a mounting fixed plate and a stabilizing transverse plate are fixedly mounted on the heat exchanger, an auxiliary assembly is arranged on the mounting fixed plate and the stabilizing transverse plate, and a vibration transmission plate is arranged on the auxiliary assembly. Through cooperative use of the interception assembly and the auxiliary assembly, the anti-scaling capacity of the MVR evaporator is effectively improved, the heat exchange efficiency is improved, the service life of equipment is prolonged, energy consumption is reduced, and the use effect of the MVR evaporator is greatly improved.

The present invention relates to a gravitational vapor compressor (GVC) device comprising at least one vertical compression chamber (16) and a plurality of droplet spray generating nozzles (10) are arranged at the top thereof, which nozzles form a flow of droplets in the water vapor flow along a height h1 of the vertical shell (16). The speed of the droplets from the droplet beams (10) is adjusted along the height h1 to the terminal fall velocity in relation to a gas flow, the compression chamber (16) has a height h2 from which droplets fall at the same or similar terminal velocity inside a water vapor flow, which compresses the water vapor. The gravitational vapor compressor device further comprises a secondary vapor outlet duct (13).

The application discloses an amino acid hydrolysate acid removal process using indirect MVR evaporation, and particularly relates to the technical field of amino acid hydrolysate acid removal processes, and comprises the following steps: S1, amino acid hydrolysate conveying, S2, hydrolysate evaporation under reduced pressure, S3, acid substance gas-liquid separation, S4, secondary steam conveying, and S5, liquid storage. The acid substance in the amino acid hydrolysate is evaporated and acid removal treated by adopting the MVR evaporation technology, so that the hydrolysate can form concentrated liquid and acid substance after being separated under reduced pressure, the generated acid substance is separated by a gas-liquid separator, and acid liquid and secondary steam are generated, the secondary steam can provide a secondary steam source for an evaporator after being compressed by a compressor, thereby providing a large amount of steam source for the evaporator, reducing the emission of acid gas, improving the resource utilization rate, achieving the protection of the environment, and avoiding the harm of acid gas to the human body.

The invention provides a mechanical vapor recompression-based dehumidizer regeneration type air water taking system, which comprises a moisture absorption unit, which comprises a gas-liquid contact reaction device, and is used for enabling a dehumidizer solution to be in full contact with air for mass transfer and heat transfer, and enabling the dehumidizer solution to absorb moisture in the air so as to be diluted; the mechanical vapor recompression evaporator comprises an evaporator and a compressor, the evaporator comprises a dilute solution inlet, a concentrated solution outlet, a vapor outlet, a vapor inlet and a condensed water outlet, the evaporator comprises a dehumidizer channel capable of containing a dehumidizer solution, and the dilute solution inlet and the concentrated solution outlet are connected to the moisture absorption unit; the dilute solution inlet is used for receiving the diluted desiccant solution, the concentrated solution outlet is used for leading the evaporated and concentrated desiccant solution to the moisture absorption unit, the compressor comprises a compressor inlet and a compressor outlet, the compressor inlet is connected to the steam outlet, and the compressor outlet is connected to the steam inlet.

The invention relates to the technical field of food processing, in particular to a beverage concentrated solution extraction device and an extraction method. An air inlet of a compressor is communicated with a secondary steam outlet of a separator, and the compressor is used for sucking and compressing secondary steam; an air outlet of the compressor communicates with an inlet of the shell-and-tube heat exchanger shell layer, and the compressor is used for feeding compressed and heated steam into the shell-and-tube heat exchanger shell layer as a heating medium; a vapor-liquid mixture outlet of the shell-and-tube heat exchanger is communicated with an inlet of the separator, and a concentrated solution outlet of the separator is communicated with the storage tank through a pipeline; a condensate water outlet of the shell-and-tube heat exchanger is communicated with a condensate water tank through a pipeline via a flow meter; a suction port of the water ring vacuum pump is communicated with a non-condensable gas exhaust port of the shell-and-tube heat exchanger tube layer through the steam water ring vacuum pump; a suction port of the steam water ring vacuum pump is communicated with the condensate water tank and the storage tank and used for forming negative pressure in the condensate water tank and the storage tank. According to the technical scheme, boiler steam and a large amount of cooling water are not used, environment protection and energy conservation are achieved, and operation is convenient; the problems of high investment cost, large occupied area, complex operation and maintenance and the like of large industrial equipment in the prior art are solved.

The invention relates to a compressed air distribution device and a tail end wastewater bypass flue evaporation system. The compressed air distribution device comprises a spray gun group, a control valve group and an air path distributor, one end of the air path distributor is connected with compressed air input equipment, a flow guide plate and a pressure balance cavity are arranged in the air path distributor, the flow guide plate is used for conducting angle optimization on input compressed air, and the pressure balance cavity is used for distributing the compressed air optimized by the flow guide plate into all the cavities in a balanced mode. The hoses are connected with the spray guns in the spray gun group in a one-to-one correspondence manner; one end of the waterway distributor is connected with a desulfurization wastewater pipeline and is connected with the corresponding spray gun through a pipeline; and the control valve group is distributed in a hose connected with the gas path distributor and a pipeline connected with the water path distributor. Compared with the prior art, the system has the advantages that the stability is improved, the energy consumption is reduced, and equipment protection and automatic control are realized.

Provided is a method for concentrating a sodium hydroxide aqueous solution including: in a stepwise concentration process of sodium hydroxide aqueous solution, including a concentration part in which a plurality of evaporators from a first evaporator to a nth evaporator are connected in series, adding a sodium hydroxide aqueous solution to the first evaporator and then performing evaporation to obtain a first sodium hydroxide concentrate, and recovering steam evaporated from the sodium hydroxide aqueous solution; and adding the first sodium hydroxide concentrate to an evaporator at a subsequent stage, and adding the steam recovered from the first evaporator to a mechanical vapor recompression device to perform compression, wherein the nth evaporator uses the compressed steam as a heat source.

This utility model belongs to the technical field of MVR evaporators, specifically relating to an MVR evaporation crystallization device. It includes: a forced circulation system, a hydrocyclone, a thickener, and a centrifuge. In the forced circulation system, material sequentially enters a first heater, a circulation pump, a second heater, and a separator through circulation pipes, then returns to the first heater, forming a cycle. The circulation pipes are connected to a feed pump and a discharge pump. The hydrocyclone inlet is connected to the output end of the discharge pump. The hydrocyclone overflow outlet and underflow outlet are respectively connected to a mother liquor tank and a thickener. The thickener's clear liquid overflow outlet and crystal slurry outlet are respectively connected to the mother liquor tank and the centrifuge. The centrifuge's liquid outlet and solid outlet are connected to the mother liquor tank and the outside environment. This utility model achieves equipment compactness through skid-mounted integrated design and process optimization; by using the hydrocyclone for low-concentration material intake, the thickener does not require a large buffer space, further saving space.

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.

The invention relates to the technical field of MVR (mechanical vapor recompression) evaporators, in particular to an anti-scaling enhanced heat transfer system of an MVR evaporator, which comprises an evaporator, a separator in pipeline communication with the evaporator and a compressor in pipeline communication with the separator, and the compressor and the output end of the evaporator are in pipeline communication with the evaporator; wherein the evaporator comprises a shell, an upper plate and a lower plate, the upper plate and the lower plate are rotationally connected into the shell, the multiple heat exchange pipes are connected in an overall rotating mode, steam is input into the shell through the compressor, an input port is formed in one side of the shell, and therefore the heat exchange pipes can be installed in a traditional fixed heat exchange pipe installation mode, and the heat exchange pipes can be installed more conveniently. Compared with the prior art, the heating uniformity of the heat exchange tube is general, and the heating uniformity of the heat exchange tube can be improved by adopting the mode that the heat exchange tube rotates circumferentially as a whole in the scheme, so that the heat transfer effect is enhanced; in addition, the arranged cleaning assembly can be used for flushing the heat exchange pipe, and therefore the durability and reliability of the whole device are improved.

The invention provides an MVR distillation and concentration device for pharmaceutical production, and relates to the field of pharmaceutical concentration. The MVR distillation and concentration device for pharmaceutical production comprises a concentration table, an evaporation tank is arranged on the inner side of the concentration table and used for evaporating and converting liquid medicine into gas, the surface of the evaporation tank is communicated with a steam cylinder and used for storing steam, and a compression mechanism is arranged on the inner side of the steam cylinder and used for compressing the steam. According to the MVR distillation and concentration device for pharmaceutical production, liquid medicine is evaporated into the inner side of the steam cylinder through the evaporation tank, steam on the inner side of the steam cylinder is compressed through the compression mechanism, so that the steam forms small water drops to be adhered to the inner wall of the compression bin, and compressed substances which still keep gas are cooled and discharged through the output assembly; the liquid substance is circularly evaporated, so that the liquid medicine is concentrated and separated, the concentration effect is achieved by extruding the steam to separate the liquid medicine, and the problems that a large amount of heat and steam can be released and consumed by direct distillation during liquid medicine concentration, and the cooling time and process are relatively tedious are solved.

The utility model discloses an MVR (Mechanical Vapor Recompression) evaporation wastewater treatment device, and particularly relates to the field of wastewater treatment, the MVR evaporation wastewater treatment device comprises an MVR evaporator shell, a driving motor is fixedly mounted at the top end of the MVR evaporator shell, and an output shaft of the driving motor penetrates through the side wall of the top end of the MVR evaporator shell and is fixedly connected with a first bevel gear arranged in the MVR evaporator shell; a first bevel gear is arranged on the inner side wall of the MVR evaporator shell, a second bevel gear is arranged at the lower end of the first bevel gear in a meshed mode, the second bevel gear is fixedly installed on a stirring shaft, a stirring assembly and a defoaming plate are arranged on the stirring shaft, a water guide ring is arranged on the inner side wall of the MVR evaporator shell, and a plurality of spray heads are evenly arranged on the water guide ring at intervals. When the stirring rod rotates, the gear can be driven to rotate under the action of the annular tooth groove, so that the stirring rod drives the stirring blades to rotate, the stirring efficiency of the stirring assembly is improved, wastewater in the MVR evaporator is uniformly heated, and the wastewater is fully heated and evaporated.

The invention discloses a falling film demisting gas washing device which comprises a steam treatment part and a gas washing part, the folded plate demister comprises a shell and a #-shaped distribution plate, the shell comprises a first inner cavity, one end of the first inner cavity is communicated with the steam treatment part, and the other end of the first inner cavity is used for being communicated with an external steam compressor; the defoaming part comprises a plurality of baffle plates and a plurality of trapping hooks, each baffle plate comprises a plurality of peak parts, every two adjacent peak parts face the same direction in the second direction, every two adjacent peak parts face different directions in the first direction, each trapping hook comprises a connecting part and a hook part which are connected, and the hook parts and the corresponding peak parts are arranged at intervals in the second direction; the projections of the hook parts and the corresponding peak parts coincide; wherein external secondary steam can sequentially flow through the external falling film evaporator, the steam treatment part, the #-shaped distribution plate, the defoaming part and the external steam compressor. According to the steam compressor, entrainment carried in secondary steam can be reduced, and the influence on the efficiency of the steam compressor and the dynamic balance of the impeller is reduced.

The utility model discloses a safe, efficient and energy-saving ammonium nitrate solution production system which comprises an efficient tubular reactor, a reactor flash tank and a reflux mixer, the efficient tubular reactor is communicated with the reactor flash tank and the reflux mixer, and an ammonia gas pipe and a nitric acid pipe are connected to the efficient tubular reactor. An adjusting loop is connected among the ammonia gas pipe, the nitric acid pipe and the efficient tubular reactor, the reflux mixer comprises a neutralization washing tower, and the reactor flash tank is further connected with a falling film primary evaporator. Compared with the prior art, the system provided by the utility model has the advantage that the ammonium nitrate solution can be prepared safely, efficiently and in an energy-saving manner by utilizing the pressurized tubular reactor and the MVR evaporator.

The utility model relates to the technical field of heating boxes, and discloses a heating box of an MVR (mechanical vapor recompression) evaporator for electrolytic aluminum ash treatment, which comprises a mixing mechanism, a conveying mechanism and a discharging mechanism, the discharging mechanism is positioned on the right side of the mixing mechanism, and the conveying mechanism is positioned inside the mixing mechanism. The motor is fixed at the top of the fixing plate, the motor drives the worm to rotate, the worm is meshed with the turbine, and the turbine is fixed with the stirring rod, so that electrolytic aluminum ash liquid inside is stirred and can be uniformly heated, the worm is fixed with the gear, and the gear is meshed with the rack, so that the stirring efficiency is improved. The fixing plate slides on the outer surface of the sliding groove through the sliding block, meanwhile, the stirring rod is rotationally connected with the fixing plate, the stirring rod moves back and forth along the outer surface of the sliding groove through the sliding block, it is guaranteed that electrolytic aluminum ash on the back flows in the heating box and is evenly heated, excessive heating or insufficient heating is prevented, and the product quality is guaranteed.

The invention provides a horizontal tube falling film MVR evaporator. Functional areas comprise a liquid distribution area, a falling film evaporation area, a gas-liquid separation area and a steam condensation area. The equipment is divided into a left tube box, a main shell and a right tube box, a steam condensation area is formed by the interior of the heat exchange tube bundle, the left tube box and a part of space of the right tube box. The upper part of the heat exchange tube bundle and the liquid distributor are liquid distribution areas; the main shell is divided into two outer side cavities and a central cavity, the tops of the two outer side cavities are isolated, the bottoms of the two outer side cavities are communicated, a heat exchange tube bundle area in the central cavity is a falling film evaporation area, and the lower portion of a heat exchange tube bundle, the two outer side cavities and the other part of space of the right tube box are gas-liquid separation areas. Materials enter from the liquid distribution area and absorb heat of the steam condensation area in the falling film evaporation area to generate gas-liquid two-phase fluid, and the fluid enters the gas-liquid separation area to be separated; liquid is discharged from the bottom; gas is discharged from the right pipe box, is compressed by an external compressor and enters the steam condensation area for condensation, and the equipment is high in evaporation efficiency, small in liquid holdup and low in entrainment amount.

To provide a carbon dioxide recovery system where heat supply amount from outside to a distillation column diffusing carbon dioxide from an absorbent in which carbon dioxide is absorbed is reduced.SOLUTION: A carbon dioxide recovery system comprises: a first distillation column where an absorbent in which carbon dioxide is absorbed is heated and carbon dioxide is diffused from the absorbent; a first reboiler where heat exchanging is performed between the absorbent taken out from the first distillation column and steam; a second reboiler where heat exchanging is performed between the absorbent taken out from the first distillation column and a fluid which is a different kind from either an outflow gas outflowing from the first distillation column or steam; and a first compressor compressing the fluid before flowing the fluid in the second reboiler.SELECTED DRAWING: Figure 1

This invention discloses an MVR evaporator, belonging to the field of evaporators. The MVR evaporator includes a tank, a stirring assembly, a heat exchanger assembly, a gas-liquid separator, a preheater, a wastewater inlet pipe, a gas pipe, a compressor, a distilled water outlet pipe, and a concentrated liquid outlet pipe. The heat exchanger assembly is fixed inside the tank, comprising an outer ring, an inner ring, and a gas collecting plate. The top of the gas collecting plate is fixedly connected to the outer ring and the inner ring. The stirring assembly has a first stirring end, a second stirring end, and a third stirring end. The first stirring end passes through the top wall of the tank and extends into the inner ring. The second stirring end passes through the top wall of the tank and extends between the inner and outer rings. The third stirring end passes through the side wall of the tank and extends to the outside of the outer ring. This invention employs a design combining a heat exchanger assembly and a stirring assembly, achieving high-efficiency heat exchange between wastewater and the heat exchanger assembly through multiple stirring methods.

The utility model relates to the technical field of condensate water collection, and discloses a condensate water collection device of an MVR evaporator for electrolytic aluminum ash treatment, which comprises a collection box, a drain pipe is mounted on the surface of the collection box, a filtering inclined plate is fixedly connected to the inner wall of the collection box, and a mounting shell is fixedly connected to the surface of the collection box. A hydraulic electric push rod is mounted in the mounting shell, the output end of the hydraulic electric push rod is fixedly connected with a right-angle scraping plate, and a limiting hole is formed in the surface of the right-angle scraping plate. By arranging the filtering inclined plate and the scraping plate, the clamping plate is pulled out from the interior of the filtering inclined plate, the hydraulic electric push rod is started, the output end of the hydraulic electric push rod drives the right-angle scraping plate to move on the surface of the filtering inclined plate, and dust and impurities on the surface of the filtering inclined plate are scraped to the right end of the partition plate to be collected; the situation that in the process of collecting the condensate water for a long time, the surface of the filtering inclined plate is blocked, and consequently the condensate water cannot be collected and filtered is avoided.

To provide an improved vapor compression distillation system.SOLUTION: The distillation device comprising a raw fluid input and an evaporator 6060 in fluid communication therewith, the device further comprising a compressor 6064 having an impeller coupled to a motor, the compressor having a low pressure inlet for vapor from the evaporator and a high pressure outlet for compressed vapor, the device further comprising a temperature sensor 6066 monitoring the temperature of the vapor at the inlet, and a condenser 6076 in heat transfer relationship with a plurality of external surfaces of the evaporator and in fluid communication with the outlet of the compressor; The device further comprises a controller 6034 for adjusting the rotational speed of the impeller with an impeller motor command based on a calibrated motor speed for the distillation device, wherein the controller is configured to determine an adjusted motor speed for a next device use and overwrite the calibrated motor speed with the adjusted motor speed.SELECTED DRAWING: Figure 2

The disclosure pertains to a distillation system comprising two columns operating at different pressures, a compressor, and a reboiler and a condenser that are heat integrated with each other.

The invention relates to the technical field of evaporative crystallization devices, in particular to a multi-effect plate type MVR (mechanical vapor recompression) evaporative crystallization device and technology.The multi-effect plate type MVR evaporative crystallization device comprises an evaporation assembly and a compression assembly which are arranged on a base, the evaporation assembly comprises a separator, a plate type evaporator and a preheater, and a solid-liquid separation system is further arranged on the base; the solid-liquid separation system comprises a thickener, a centrifugal machine and a mother liquor tank, a pump set matched with the evaporation assembly, the compression assembly and the compression assembly is arranged on the base, the plate-type evaporator comprises a plurality of heat exchange structures which are sequentially connected, the output ends of the heat exchange structures are all connected with separators, and the separators are connected with the centrifugal machine. By arranging the plate-type evaporator and the preheater, the stock solution is preheated before evaporation operation, the difficulty of heating the stock solution by the plate-type evaporator is lowered, and the plate-type evaporator is high in heat transfer efficiency, better in heat exchange effect, compact in structure and high in integration level.

The invention provides a low-temperature evaporation and concentration recycling system for medium-high-temperature geothermal thermal spring water, which comprises a raw heat energy adaptation and raw water conveying unit, a pure physical pretreatment unit, a low-temperature high-power concentration unit, a solid-liquid concentrated liquor treatment and mineral recovery unit, a condensate water full-recycling unit and an intelligent monitoring unit, the invention further provides a medium-high temperature geothermal thermal spring water low-temperature evaporation and concentration recycling method adopting the medium-high temperature geothermal thermal spring water low-temperature evaporation and concentration recycling system. According to the invention, the technical problems of primary heat energy waste, high-hardness scaling and chemical pollution of medium-high temperature geothermal hot spring water, health component attenuation, high energy consumption of tail end byproduct treatment and single resource utilization of geothermal hot spring water in the existing geothermal hot spring water concentration recycling technology are effectively solved.

The disclosure pertains to distillation system comprising two columns operating at different pressure, a compressor, and a reboiler and a condenser that are heat integrated with each other.

The utility model discloses a kind of separation and purification system of secondary steam in MVR evaporation system, including cylinder, cylinder is sequentially distributed with cyclone separation chamber, purification settling chamber and silk screen demisting chamber from bottom to top, cyclone separation chamber middle part has spray washing chamber, spray washing chamber bottom is connected with cyclone separation chamber, spray washing chamber top is connected with purification settling chamber, cyclone separation chamber is connected with steam inlet pipe, silk screen demisting chamber is connected with steam outlet pipe, cyclone separation chamber has collection tank, collection tank is used to collect the droplet of secondary steam being thrown to cylinder wall, spray washing chamber has spray pipe, spray pipe is used to spray atomized washing liquid contact secondary steam absorption volatile component contained;By cyclone separation, countercurrent spray washing, sedimentation and silk screen demisting four-stage treatment process, liquid droplet, mist droplet and volatile component in secondary steam are purified gradually, greatly improve the purification quality of secondary steam, effectively solve the problem of poor effect of traditional purification mode.

The embodiment of the invention provides a fault diagnosis method, device and equipment for an MVR concentration system. The method comprises the following steps: collecting operation data of the MVR concentration system; performing fault analysis according to the operation data, and determining a target fault type of the MVR concentration system; and sending an alarm signal according to the target fault type of the MVR concentration system. In this way, the operation data of the MVR concentration system can be monitored in real time, the fault type of the MVR concentration system can be accurately analyzed, and an alarm signal can be sent out in time.

The invention relates to the technical field of bisphenol F dephenolization, in particular to a bisphenol F dephenolization system which comprises an evaporation kettle, a steam compressor, a falling film evaporator, a circulating pump and a phenol recovery tank. The evaporation kettle is provided with a first feeding hole and a live steam inlet; a first air outlet is formed in the top of the evaporation kettle, a first air inlet is formed in the upper part of the falling-film evaporator, and the first air outlet, the steam compressor and the first air inlet are sequentially communicated; a first discharging opening is formed in the bottom of the evaporation kettle, a second feeding opening is formed in the top of the evaporation kettle, and the first discharging opening, the circulating pump, the falling film evaporator and the second feeding opening are sequentially communicated; the falling film evaporator is provided with a phenol liquid outlet, and the phenol liquid outlet is communicated with the phenol recovery tank. According to the bisphenol F dephenolization system, effective recycling of low-temperature and low-pressure phenol steam latent heat is achieved, meanwhile, cooling water resources consumed for condensing the steam are avoided, and therefore energy consumption and production cost are reduced.