235results about "Evaporators with vertical tubes" patented technology

The present application relates to a kind of hot exciting flash evaporation loop lift heat exchanger, including upper head, lower head, cylinder, several heat exchange tubes, the upper end surface of cylinder and the upper head form cavity I between, the lower end surface of cylinder and the lower head form cavity II between, cavity I, cavity II and the inner cavity of cylinder are not communicated with each other between, heat exchange tube is fixed in the inside of cylinder by tube sheet, the upper end of heat exchange tube is placed in cavity I and is communicated with cavity I, lower end and cavity II are communicated, cylinder includes lift section cylinder and hot exciting section cylinder, heat exchange tube includes lift section heat exchange tube and hot exciting section heat exchange tube, lift section heat exchange tube and hot exciting section heat exchange tube are communicated by throttling component between, the inner diameter of throttling component is less than the inner diameter of hot exciting section heat exchange tube.The heat exchanger of the present application is provided with a kind of hot exciting flash evaporation loop lift, will hot exciting pressurization energy storage, throttling flash evaporation kinetic energy release, loop lift heat exchange and vapor-liquid separation function integration in same equipment, solve the problem of traditional lift section heat exchanger dependence big temperature difference.

The utility model discloses a double-tower falling-film evaporator set, which belongs to the technical field of evaporator equipment and comprises a heating evaporation tank, a replacement component is arranged at the top of the heating evaporation tank, feed liquid can be fed more uniformly, heat pipes can be replaced and overhauled conveniently, evaporated liquid and steam are separated by a separator, and the heat pipes can be replaced and overhauled conveniently. Steam is introduced into the heating evaporation tank to serve as a heating medium through a secondary steam outlet in the upper portion of the separator, multi-effect operation is achieved, the energy utilization rate is increased, the heating steam inlet is mainly used for providing heat energy needed by evaporation, and the condensate water outlet is used for discharging water formed by condensation of the heating steam after heat transfer. The mounting slots correspond to the bottoms of the partition plates, so that the mounting stability of the partition plates is ensured, and meanwhile, internal media can be discharged in time through the treatment opening and the concentrated solution outlet.

An inner surface of a thermosyphon reboiler is engraved. The thermosyphon reboiler includes a first side configured to receive a liquid and a second side configured to receive a heating fluid. The thermosyphon reboiler is configured to transfer heat from the heating fluid at the second side to the liquid at the first side to boil the liquid at the first side. Engraving the inner surface of the thermosyphon reboiler includes engraving a pattern across at least a portion of an inner surface of the first side of the thermosyphon reboiler. The pattern has a specified depth that increases a heat transfer surface area of the first side of the thermosyphon reboiler. The engraved pattern prevents film boiling from occurring at the inner surface of the first side of the thermosyphon reboiler.

The invention provides a falling-film evaporator based on a heat exchange tube enhanced heat transfer technology, and relates to the technical field of evaporation equipment, the falling-film evaporator comprises an evaporation tank body, a feed pipe is mounted at the top of the evaporation tank body, a liquid distribution disc is arranged in the evaporation tank body, a liquid distributor is arranged above the liquid distribution disc, the liquid distributor is communicated with the feed pipe, and a lower liquid disc is arranged at the bottom of the liquid distributor; a plurality of liquid discharging holes are formed in the liquid discharging disc, the liquid falling points of the liquid discharging holes and the adjacent pipe openings of the heat exchange pipes are arranged at equal intervals, the distance between each liquid discharging hole and the liquid distributing disc is the same, a floating ball is arranged in the liquid distributor, a switch disc is rotationally installed in the liquid distributor, a plurality of switch holes are formed in the switch disc, and a transmission mechanism is arranged on the side portion of the liquid distributor. The floating ball is in linkage with the switch disc through the transmission mechanism to control the switch hole and the liquid discharging holes to be communicated and blocked, liquid materials are evenly distributed, the liquid discharging holes are controlled to be opened and closed synchronously, the liquid materials are evenly distributed, and the film forming conditions in the heat exchange pipes at different positions are the same as much as possible.

The present invention relates to the technical field of oyster taurine extraction, and discloses a concentration device for oyster taurine extraction, the concentration device comprises a support frame and three concentration tanks arranged on the support frame, a gas-liquid separation tank is fixed in the support frame, a controller is fixed in the support frame, a liquid conveying assembly is fixed below the concentration tanks, and the liquid conveying assembly is connected with the gas-liquid separation tank and the controller. A steam conveying assembly is fixed on the outer wall of the concentration tank, and the gear vacuum pump is fixed on the inner side of the support frame and is used for carrying out vacuum work on the concentration tank; one end of the vacuum distribution pipe is fixed on the gear vacuum pump; large negative pressure is generated in the evaporation pipe, and the boiling temperature of mother liquor in the evaporation pipe is reduced along with increase of the negative pressure, so that energy consumption in the evaporation process is reduced; the evaporation pipe is in a negative pressure state, and the negative pressure is beneficial to pushing mother liquor to flow, reducing the thickness of a liquid film in the heating pipe and ensuring that liquid is uniformly heated, so that the viscosity of the mother liquor and the evaporation concentration efficiency are improved.

Embodiments of the invention provide systems and methods for water treatment and / or desalination.

The utility model discloses a vertical pipe efficient falling film evaporator, and belongs to the technical field of vertical pipe falling film evaporators.The vertical pipe efficient falling film evaporator comprises an evaporation mechanism, two sets of inserting rods are pressed, the two sets of inserting rods enter a mounting block, the mounting block is inserted into a mounting groove block, and the inserting rods are inserted into the mounting groove block under the action of spring bounce; the movable scraping plate is installed in the vertical pipe evaporator body through the installation block, the servo motor drives the connecting rod to rotate, the connecting rod drives the flow guide block and the connecting block to rotate, it can be guaranteed that material liquid is evenly discharged through the flow guide block, and the material liquid can be evenly discharged through the flow guide block. The connecting block drives the movable scraper to rotate, the material liquid can be evenly smeared, the inner wall of the vertical pipe evaporator body can be conveniently cleaned in the later period, the material liquid can be conveniently and evenly discharged and evenly smeared, mounting and dismounting are convenient, the evaporation and extraction efficiency is improved, operation is easy and fast, and using is convenient.

The invention relates to a system and device for desalination by liquid water jet compression, which is a phase-change desalination with a high-efficiency latent heat exchanger in which the pressure of the primary saturated vapor is increased until obtaining the secondary saturated vapor by injecting translational and rotational kinetic energy via pressurized water jets, so as to leave an unobstructed path through which the vapor flows at high speed in order to achieve a high flow rate and high efficiency.

The present invention relates to a process for removing impurities from vegetable oil, wherein the process is comprising the step of subjecting a vegetable oil to a short-path evaporation, wherein the short-path evaporation is performed at a pressure of below 1 mbar, at an evaporator temperature in a range of from 50 to below 150° C. and with a feed rate per unit area of evaporator surface of the short-path evaporation equipment of more than 25 kg / h·m2, and thus obtaining a retentate vegetable oil and a distillate. The present invention further relates to the use of a short-path evaporation for removing impurities from a vegetable oil.

In an embodiment, a circuit includes: a transformer defining an inductive footprint within a first layer; a grounded shield bounded by the inductive footprint within a second layer separate from the first layer; and a circuit component bounded by the inductive footprint within a third layer separate from the second layer, wherein: the circuit component is coupled with the transformer through the second layer, and the third layer is separated from the first layer by the second layer.

The present invention relates to a vacuum evaporator device and system for separation of products, in particular water-based products, by-products and waste, into a non-volatile fraction and a volatile fraction. The vacuum evaporation device comprises a tubular member, heating means for heating at least a part of the outer surface of the tubular member, and a stirrer disposed along at least a part of the interior of the tubular member. The tubular member has first and second closed ends such that a substantially airtight chamber is formed in the interior of the tubular member; the tubular member further comprises: an inlet for the entry of the product, a first outlet for the discharge of the non-volatile fraction and a second outlet for the exit of the volatile fraction.

A hybrid process and system for separating water from an inlet brine solution is disclosed. The hybrid process couples at least two different separation processes / systems. The inlet brine solution is fed into a first separation process, which produces a water distillate and a brine concentrate. The brine concentrate from the first separation process is then fed into the second separation process to further recover additional water. The excess heat from the second separation process is supplied to the first separation process.

A distillation device may comprise a source fluid input and an evaporator in fluid communication therewith. The device may further comprise a compressor 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 may further comprise at least one temperature sensor configured to monitor temperature of vapor in the inlet and a condenser in heat transfer relationship with exterior surfaces of the evaporator and in fluid communication with the compressor outlet. The device may further comprise a controller configured to govern rotation speed of the impeller with an impeller motor command based on a calibrated motor speed for the distillation device. The controller may be configured to determine an adjusted motor speed for a next use of the device and overwrite the calibrated motor speed with the adjusted motor speed.

The invention relates to a process for obtaining free fatty acid and / or free fatty acid ester, in which a liquid mixture containing the free fatty acid and / or the fatty acid ester is separated by contacting a vapour of the liquid mixture in a column of a distillation apparatus with condensate formed from the vapour running downward, wherein heat and mass transfer takes place between the vapour and the condensate on column internals. According to the invention, the column has at least 10 theoretical plates and the separation is conducted with a pressure drop between the top and bottom of the column Δp of ≥ 3.3 mbar. Appropriately, the liquid mixture, preferably produced from vegetable oil or from fish oil, contains polyunsaturated fatty acid, preferably omega-6 or omega-3 fatty acid and / or alkyl monoesters and / or glycerol monoesters. In one configuration of the invention, the column has at least 30, preferably at least 40, theoretical plates and the separation is conducted with a pressure drop Δp between 3.5 mbar and 6 mbar.

The invention relates to a distillation unit (100 000) which is designed for a continuous distillation process and to a method for a continuous operation for separating a liquid substance mixture (10) into two to six liquid product flows (201, 202, . . . ) with different compositions and into a gaseous product flow (300). For this purpose, an evaporation unit (10 000) is provided consisting of multiple evaporation devices (10 000-1, 10 000-2, . . . ), wherein each evaporation device has a circuit device (1 200-1, 1 200-2, . . . ) for recirculating a sub-quantity of each of the liquid sump flows (22, 21, . . . ) of an evaporation device into the respective evaporation device, and each of the circuit devices additionally has a discharge device (1 300-1, 1 300-2, . . . ) for providing one of the liquid product flows (201, 202, . . . ).

Disclosed herein is a refined PUFA oil with an enhanced palatability comparing to the same PUFA oil without refinement. Also disclosed is a food composition for a companion animal or a food for human consumption wherein said food composition comprises the above refined PUFA oil and thus having enhanced palatability. Further disclosed herein is a method for manufacturing the above-mentioned refined PUFA oil wherein said method comprises the step of deodorization.

A bottom chamber of a stripper (or bottom liquid holder) including a vortex breaker, a blocking plate and a guiding plate. A stripper, a urea HP stripper, a urea plant, a method for operating a stripper and a method for producing a solid, particulate urea-based composition.

The utility model relates to a multi-effect tubular falling film evaporation device which comprises a plurality of tubular falling film evaporators which are sequentially connected in series, a dead steam outlet is connected with one end of a dead steam pipe, and a gas outlet is connected with the dead steam pipe through a pipeline; an air inlet of the first-effect tubular falling-film evaporator is connected with a steam pipe, the other end of a steam exhaust pipe of the first-effect tubular falling-film evaporator is connected with an air inlet of the second-effect tubular falling-film evaporator, and so on, the other end of a steam exhaust pipe of the last-effect tubular falling-film evaporator is connected with a water cooler. The air outlet of the heat exchange cavity is connected with the steam exhaust pipe through the pipeline, so that steam exhausted from the heat exchange cavity directly enters the heat exchange cavity of the next-effect evaporator without passing through the liquid distribution area, the steam is prevented from impacting feed liquid from top to bottom after entering the material distribution area, and uniform film distribution of the feed liquid is guaranteed; meanwhile, impact of steam on the heating pipe head is avoided, the service life of equipment is prolonged, and efficient and stable operation of the evaporator is ensured.

This application provides an evaporation device and a heat exchange system, including an evaporation chamber, a heat absorption chamber, and a liquid storage chamber. A gas pipeline is connected to the evaporation chamber, and a liquid pipeline is provided with multiple liquid inlet pipes. Liquid inlet holes are provided on the walls of the liquid inlet pipes, and the liquid inlet pipes are connected to the liquid storage chamber. The liquid control mechanism includes a water suction plate and multiple sealing components. The water suction plate is disposed in the evaporation chamber, and one end of the sealing component is connected to the water suction plate, while the other end of the sealing component extends into the interior of the liquid inlet pipe. When the liquid in the evaporation chamber cannot evaporate in time, the sealing component blocks the liquid inlet holes of the liquid inlet pipe, controlling the flow rate of the liquid inlet pipe. This prevents excessive liquid accumulation in the evaporation chamber from affecting the steam discharge in the heat absorption tube, thereby improving the evaporation efficiency of the liquid. The liquid medium that the water suction plate cannot evaporate in time avoids blocking the inlet of the heat absorption tube assembly. Due to the increased weight of the water suction plate after absorbing liquid, it presses down on the sealing components, blocking part of the liquid inlet pipe, thereby reducing the liquid flow rate and improving the evaporation efficiency of the liquid medium.

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 a method and a system for purifying 4-hydroxybutyl acrylate based on film evaporation coupled extractive distillation, a reaction solution obtained after esterification reaction of acrylic acid and 1, 4-butanediol is subjected to film evaporation to obtain light component acrylic acid and concentrated solution, and the concentrated solution comprises 1, 4-butanediol, 4-hydroxybutyl acrylate, 1, 4-butanediol, 1, 4-hydroxybutyl acrylate, 1, 4-butanediol, 1, 4-butanediol, 1, 4-butanediol, 1, 4-butanediol, 1, 4-butanediol, 1, 4-butanediol and 1, 4-butanediol. The preparation method comprises the following steps: adding 1, 4-butanediol diacrylate, an esterification reaction catalyst and a polymerization inhibitor; carrying out extractive distillation on the concentrated solution and an extractant ionic liquid to respectively obtain a product 4-hydroxybutyl acrylate and a post-reaction extractant; and rectifying the reacted extracting agent, recovering the extracting agent, and reusing the extracting agent for extractive distillation. By adopting thin film evaporation, the separation period can be effectively shortened, and the polymerization risk is reduced; extractive distillation not only shortens the separation period and reduces the risk of polymerization, but also the ionic liquid can break azeotropy among 1, 4-butanediol, 4-hydroxybutyl acrylate and 1, 4-butanediol diacrylate, the high-purity product 1, 4-butanediol is obtained through separation, and purification of 4-hydroxybutyl acrylate is achieved.

The invention relates to an evaporator-condenser-type heat exchanger comprising a plurality of zones, each zone comprising at least one extractor means configured to channel at least a portion of the primary vapor generated in said zone towards the outside of the heat exchanger. The heat exchanger includes a plurality of sub-assemblies consisting in part of a layer of a thermally conductive material.

To provide an improved vapor compression distillation system.SOLUTION: A distillation device comprises a source fluid input and an evaporator 6060 in fluid communication therewith. The device further comprises 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 comprises a temperature sensor 6066 configured to monitor the temperature of the vapor in the inlet, and a condenser 6076 in heat transfer relationship with multiple exterior surfaces of the evaporator and in fluid communication with the compressor outlet. The device further comprises a controller 6034 configured to adjust a rotation speed of the impeller with an impeller motor command based on a calibrated motor speed for the distillation device. The controller is configured to determine an adjusted motor speed for a next use of the device and overwrite the calibrated motor speed with the adjusted motor speed.SELECTED DRAWING: Figure 2

Proposed are a device and a method based thereon for continuously purifying high-boiling thermolabile compounds of more highly volatile impurities by the selective continuous distillation of a medium fed into the device. The device is a column apparatus comprising at least three sections arranged successively one above another: a mass exchange section, an evaporation section and a cooling section, wherein the evaporation section is a vertically oriented falling film evaporator with a fixed residence time for thermolabile mixtures in the evaporation zone. In a specific embodiment, examples of high-boiling thermolabile media are mixtures of aromatic polyamines, for example mixtures of methylene diphenyl diamine (MDA) and higher homologues thereof, as well as mixtures of aromatic polyisocyanates, for example mixtures of methylene diphenyl diisocyanate (MDI) and higher homologues thereof. The method based on the device makes it possible to obtain the above-mentioned media in a purified form in which the residual content of more volatile solvents such as, for example, aniline or chlorinated benzene is not more than a few dozen ppm and the residence time of the medium undergoing evaporation in the evaporator region is not more than 100 seconds, which does not cause significant changes in the colour value of a thermolabile medium.

The present invention provides a falling film evaporator based on the heat exchange tube enhanced heat transfer technology, which relates to the technical field of evaporation equipment, including an evaporation tank body, a feed pipe installed on the top of the evaporation tank body, a liquid separation plate provided inside the evaporation tank body, a liquid separator provided above the liquid separation plate, the liquid separator is connected to the feed pipe, a lower liquid plate is provided at the bottom of the liquid separator, a plurality of lower liquid holes are provided on the lower liquid plate, the liquid falling points of the lower liquid holes are arranged at equal intervals with the pipe openings of the adjacent heat exchange tubes, and the distance between each lower liquid hole and the liquid separation plate is the same, a float is provided in the liquid separator, a switch plate is rotatably installed in the liquid separator, a plurality of switch holes are opened on the switch plate, and a transmission mechanism is provided on the side of the liquid separator, the float is linked with the switch plate through the transmission mechanism, controls the flow resistance of the switch holes and the lower liquid holes, realizes uniform distribution of liquid and material, controls the synchronous opening and closing of the lower liquid holes, and realizes uniform distribution of liquid and material. This scheme realizes uniform distribution of liquid and material, so that the film forming conditions in the heat exchange tubes at different positions are as similar as possible.

In one aspect, a mass exchanger having an air inlet, air outlet, airflow generator, and a tubular membrane assembly. The tubular membrane assembly includes an inlet header, an outlet header, and a plurality of tubular membranes. The tubular membranes have side walls configured to facilitate mass transfer between air contacting the tubular membranes and working fluid in the tubular membranes. The inlet header includes an inlet header body having inlet header body openings with inlet end portions of the tubular membranes extending in the inlet header body openings and inlet header potting connecting the inlet end portions of the tubular membranes to the header body. The outlet header includes an outlet header body having outlet header body openings with outlet end portions of the tubular membranes extending in the outlet header body openings and outlet header potting connecting the outlet end portions of the tubular membranes to the header body.

A falling film apparatus has tube inserts located at the top end of heat exchange tubes. The tube inserts have internal circumferential ribs. The ribs distribute a process flow into a uniform, annual film within the tube inserts and the tubes, and eliminate dry spots, even at low operating rates. This provides greater operating latitude, can improve operating efficiency and can reduce fouling.

The present invention relates to the technical field of evaporation equipment, and particularly relates to an MVR continuous circulation evaporation equipment for extracting single-component polyamide. Aiming at the problem that in the existing MVR continuous circulation evaporation equipment, the steam output of the previous-stage device is unstable and affects the subsequent processes. It includes a fixed tank with a uniform distribution, an evaporation element is fixedly connected inside the fixed tank, a gas storage tank is fixedly connected and communicated with the outside of the fixed tank, a first electric push rod is fixedly connected to the gas storage tank, a first sliding plate is fixedly connected to the telescopic end of the first electric push rod, and first pressure sensors are symmetrically distributed and fixedly connected to the first sliding plate. The present invention temporarily stores and collects the steam produced by adjacent fixed tanks through the gas storage tank, and then pushes the collected steam to the compressor at a uniform speed, reducing the amplitude of the steam volume fluctuation. At the same time, the generation situation of the steam in the adjacent fixed tank can be known in advance through the first pressure sensor, which is convenient for the staff to make adjustments according to the actual situation.

Concentration plant (100) for a liquid food product, comprising: - a concentrator apparatus (10); - an entry line (20) of entry to the concentrator apparatus (10) for the food product to be treated; - an exit line (30) of exit from the concentrator apparatus (10) for the treated food product, - a bypass line (40) that puts the exit line (30) in selective fluid communication with the entry line (20); - a control unit (50) configured to, in response to a first signal, enable communication from the exit line (30) to the entry line (20) through the bypass line (40) such that at least a part of the treated food product flows into the entry line (20).

The utility model relates to the field of evaporators, and discloses a four-effect evaporator for energy-saving evaporation of high-concentration syrup, comprising: a cleaning component, a top cover, a middle tube and a bottom cover, wherein the top cover is fixedly mounted on the top end of the middle tube, the bottom cover is fixedly connected to the bottom end of the middle tube, and the cleaning component is fixedly mounted at the inner center of the middle tube; a second conveying pipe is fixedly mounted on the top outer surface of the top cover, a first conveying pipe is arranged on the outer surface of the middle tube, a discharge pipe is arranged at the bottom end of the bottom cover, a heating chamber is opened inside the middle tube, and evaporation tubes are evenly arranged inside the heating chamber. The utility model can automatically clean the inner surface of the evaporator by arranging the cleaning component inside the evaporator, so as to avoid disassembling the evaporator for cleaning when the inside of the evaporator is blocked.