196results 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 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.

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

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.

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).

A method for producing an α-olefin oligomer composition includes: an oligomerization step A1 of oligomerizing an α-olefin with a metallocene catalyst to obtain an oligomer (a); a distillation separation step A2 of distilling and separating the oligomer (a) to obtain a high molecular weight fraction (a1) and a low molecular weight fraction (a2); an oligomerization step B 1 of oligomerizing an α-olefin oligomer containing the low molecular weight fraction (a2) with an acid catalyst to obtain an oligomer (b); and a mixing step C of mixing a portion of the oligomer (a) or a hydrogenated product thereof and a portion or a whole of the oligomer (b), an isomer thereof, or a hydrogenated isomer thereof.

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

This disclosure provides a bottom chamber of a stripper (or bottom reservoir) including an anti-vortex device, a baffle, and a guide vane. This disclosure further provides a stripper, a urea HP stripper, a urea unit, a method of operating the stripper, and a method of producing a composition based on solid particulate urea.

The invention discloses a pipe and plate combined triple-effect countercurrent 32-50% caustic soda evaporation process and device, and belongs to the field of caustic soda production, the pipe and plate combined triple-effect countercurrent 32-50% caustic soda evaporation device comprises an evaporation unit, a heat exchange unit, a condensate water recovery unit and a vacuum unit; the evaporation unit comprises a first-effect tubular falling film evaporator, a matched first-effect separation chamber, a second-effect plate-type evaporator, a matched second-effect separation chamber, a third-effect plate-type evaporator, a matched third-effect separation chamber and a surface condenser; new steam is introduced into a shell pass of a heating chamber of the first-effect tubular falling film evaporator, a secondary steam outlet of the first-effect separation chamber is connected with a heating side inlet of the second-effect plate-type evaporator, a secondary steam outlet of the second-effect separation chamber is connected with a heating side inlet of the third-effect plate-type evaporator, and a secondary steam outlet of the third-effect separation chamber is connected with the surface condenser. The device has the effects of improving the heat energy utilization efficiency and reducing the energy consumption.

The invention relates to a tandem type devolatilization reaction system and application thereof in preparation of polyamide 6. Caprolactam, water, a molecular weight regulator, an additive component and other basic components are mixed in proportion, preheated and then conveyed to a VK tube reactor for a hydrolysis ring-opening reaction, and a polyamide 6 basic melt is obtained; and further conveying the basic melt into a tandem devolatilization reaction system to remove monomers and part of cyclic oligomers, so that the viscosity of the melt is remarkably improved, and finally, the polyamide 6 final polymer with the relative viscosity of 2.0-4.5, the monomer content of less than 0.1 wt%, the cyclic oligomer content of less than 1.5 wt%, the cyclic dimer content of less than 0.1 wt% and the hot water extractable matter content of less than 0.5 wt% is prepared. Compared with a traditional single vertical falling film devolatilization reactor, the system has the advantages that the removal efficiency is higher, the tackifying effect is better, a final polymer can be directly subjected to spinning, injection molding or film blowing, and polyamide 6 fibers, engineering plastics or films are obtained.

The embodiment of the invention relates to the technical field of evaporators, in particular to a liquid separation structure suitable for a micro-channel evaporator and the evaporator with the liquid separation structure. The liquid separation structure comprises a liquid blocking part which is used for blocking the upper portion of an inlet of each vertical micro-channel pipe and preventing a working medium from entering the inlet of each vertical micro-channel through the upper portion of the liquid blocking part. The structure further comprises a drainage part which is connected with the liquid blocking part and used for guiding the working medium at the liquid blocking part to flow to the bottom of the collecting pipe. In addition, the structure further comprises a liquid inlet space, and a space formed below the liquid blocking part is surrounded by the drainage part and the liquid blocking part, so that the working medium accumulated at the bottom of the collecting pipe can overflow inlets of the vertical micro-channels exposed in the liquid inlet space through the liquid inlet space. The liquid distribution structure can uniformly distribute a working medium entering the sealed collecting pipe into a plurality of vertical micro-channel pipes which are inserted into the bottom of the collecting pipe side by side in a sealed manner.

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