CN111821711A - Plate type fractionating tower - Google Patents
Plate type fractionating tower Download PDFInfo
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- CN111821711A CN111821711A CN202010717537.5A CN202010717537A CN111821711A CN 111821711 A CN111821711 A CN 111821711A CN 202010717537 A CN202010717537 A CN 202010717537A CN 111821711 A CN111821711 A CN 111821711A
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- tower
- tower body
- plate
- rotating ring
- collecting box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/22—Fractionating columns in which vapour bubbles through liquid with horizontal sieve plates or grids; Construction of sieve plates or grids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/12—Controlling or regulating
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to the technical field of fractionating towers, and particularly relates to a plate-type fractionating tower which comprises a tower body, a tower cover, a liquid storage chamber, a first collecting box and a controller, wherein the outer surface of the tower body is connected with a rotating ring in a sliding manner, and the rotating ring is connected through a first telescopic rod; the outer surface of the tower body is fixedly connected with a support, and a motor is fixedly connected below the support; the tower plate is connected to the inside of the tower body in a sliding manner, a rotating ring is mounted on the outer surface of the middle part of the tower plate, and push rods uniformly distributed around the rotating ring are fixedly connected to the rotating ring; a heating device is arranged at the bottom of the tower body close to the side wall; a liquid storage chamber is arranged below the tower body, a first control valve is arranged at the center of the bottom of the tower body, a liquid guide pipe is connected below the first control valve, and a first collecting box is fixedly connected to the outer surface of the liquid storage chamber; the invention has simple structure, avoids the installation of multi-stage tower plates, reduces the height of the tower body and the energy consumption loss, and saves the production cost.
Description
Technical Field
The invention belongs to the technical field of fractionating towers, and particularly relates to a plate-type fractionating tower.
Background
Fractionation is a common method for separating liquid mixtures by using the difference in boiling points of the liquid mixtures, and is widely used in petroleum refining processes for separating various oil products. The plate tower is a kind of hierarchical contact mass transfer equipment used for gas-liquid or liquid-liquid system, the fractionating tower in the prior art is generally made up of cylindrical tower body and several tower plates installed in the tower according to certain interval horizontal installation, while operating, the liquid flows through each layer of tower plates from top to bottom in sequence under the action of gravity, discharge to the bottom of the tower, the gas passes through each layer of tower plates from bottom to top in sequence under the push of pressure difference, discharge to the top of the tower, in the course of gas rising, liquid descending, the gas and liquid carry on the heat exchange continuously, have carried on many times and distilled, finish the fractionating process; the fractionating tower has a large tower body, is inconvenient for installation, maintenance and replacement of tower plates, and has low separation efficiency of mixtures and low purity of extracted products in the prior art.
The patent with the application number of CN2019107718241 published in Chinese patent mainly comprises a tower body and tower plates; the tower plates are uniformly arranged in the tower body, the upper surfaces of the tower plates are provided with overflow weirs, and the side surfaces of the overflow weirs are provided with downcomers; the downcomers between two adjacent tower plates are arranged in a staggered manner; overflow holes are uniformly formed in the tower plate, an elastic cap ring is inserted and installed in each overflow hole, and an annular curled edge is arranged at the bottom end of each elastic cap ring; the elastic cap ring is made of glass fiber materials; an arch valve plate is arranged above the overflow hole, the arch valve plate is made of glass fiber materials, and the arch valve plate is connected to the elastic arch ring through an elastic fiber strip; the bottom end of the elastic fiber strip is provided with a curled edge clamping ball which is movably clamped in the annular curled edge; this patent can effectually prevent to emit the phenomenon that takes place wearing and tearing or rust when long-term use of shape valve block, reduces the trouble that the column plate installation was changed and is brought, but this patent also has following problem:
1. the tower body is internally provided with a plurality of layers of tower plates to divide the inner cavity of the tower body into a plurality of stages of fractionation areas, so that the inner space of the tower body is increased, the tower body of the fractionation tower is higher, the driving force required to be provided when steam rises is large, and the production cost and the energy consumption are higher;
2. the temperature of the top of the tower body is low, part of gas can be condensed into liquid and fall back to the bottom of the tower, and on the tower plate with the downcomer, the liquid flows across the tower plate and is in a cross flow state with the gas, the concentration of volatile components in the liquid is gradually reduced along the flowing direction, but when the rising gas forms vortex flow on the tower plate, the liquid with high concentration and the liquid with low concentration are mixed together to form a back mixing phenomenon, and the separation efficiency is low;
3. when the gas and the liquid are contacted, the high component in the gas phase is liquefied and transferred to the liquid phase, the heat is released by liquefaction, the temperature of each interval in the fractionating tower is changed, and the purity of the collected product is reduced.
Disclosure of Invention
The invention provides a plate-type fractionating tower, which aims to make up for the defects of the prior art and solve the problems of large size, high production cost and energy consumption, low separation efficiency of a mixture and low purity of an extracted product.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a plate-type fractionating tower which comprises a tower body, a tower cover, a liquid storage chamber, a first collecting box and a controller, wherein the whole tower body is of a cylindrical structure, the outer surface of the tower body is connected with two rotating rings in a sliding manner, the two rotating rings are arranged up and down and are connected through a first telescopic rod, and the first telescopic rod is connected with the controller; the rotating ring above the first telescopic rod is rotatably connected to the outer surface of the tower body, and insections are formed on the surface of one side, away from the tower body, of the rotating ring; the rotating ring below the first telescopic rod is connected to the outer surface of the tower body in a sliding mode, and the magnet blocks which are uniformly distributed around the tower body are installed inside the rotating ring; the outer surface of the tower body is fixedly connected with a support, the support is positioned above the rotating ring, a motor is fixedly connected below the support and connected with a controller, a gear is arranged below the motor and meshed with insections on the surface of the rotating ring above the first telescopic rod; the tower plate is connected with the inside of the tower body in a sliding mode, the tower plate is a circular plate and is designed in an I shape, sieve holes which are radially and linearly arranged are formed in the upper surface and the lower surface of the tower plate, a rotating ring is arranged on the outer surface of the middle of the tower plate, push rods which are uniformly distributed around the rotating ring are fixedly connected to the rotating ring, the push rods are in contact with the tower plate, and the rotating ring drives the push rods to rotate when rotating, so that the sieve holes are in a closed or open state; a magnet block is arranged at one end of the push rod, which is far away from the rotating ring, the magnetic pole of one end of the magnet block, which is close to the side wall of the tower body, is opposite to the magnetic pole of the magnet block in the rotating ring, which is close to the side wall of the tower body, and the tower plate and the rotating ring below the first telescopic rod are always kept at the same height through mutual attraction of the magnetic poles; a heating device is arranged at the bottom of the tower body close to the side wall; a liquid storage chamber is arranged below the tower body and used for containing stock solution, a first control valve is arranged at the center of the bottom of the tower body and connected with a controller, a liquid guide pipe is connected below the first control valve, and one end of the liquid guide pipe extends into the liquid storage chamber; the outer surface of the liquid storage chamber is fixedly connected with a first collecting box, and the bottom of the first collecting box is provided with a liquid outlet; the tower cover is positioned at the top of the tower body, a pressure sensor and a temperature sensor are arranged on the inner surface of the tower cover, the pressure sensor and the temperature sensor are both connected with a controller, a second control valve is arranged at the center of the tower cover and connected with the controller, the second control valve is externally connected with a liquid conveying pipe, and the liquid conveying pipe is communicated with a first collecting box; when the tower plate opening and closing device works, the motor is started through the controller, the motor enables the rotating ring to rotate around the tower body through the rotation of the gear, and the magnet block at the top end of the push rod and the magnet block in the rotating ring are mutually attracted, so that the push rod is driven to rotate when the rotating ring rotates, and the sieve holes in the tower plate are in a closed or open state; meanwhile, the controller controls the first telescopic rod to stretch, the first telescopic rod drives the rotating ring to move up and down, the rotating ring drives the tower plate to move up and down, the controller enables the push rod to rotate above the sieve holes when the tower plate moves up, the sieve holes are in a closed state, the first control valve is opened, the stock solution is sucked into the tower body through the liquid guide pipe, the heating device heats the stock solution, and the first control valve is closed and the sieve holes are opened when the tower plate moves down; the tower plate circularly moves up and down in the tower body and stirs the stock solution, the low-phase group component vaporization speed is accelerated, when the tower plate moves up above the liquid level again, the sieve holes are closed, the first control valve is opened for liquid absorption, after the low-phase group component vaporization, the gas in the tower body is increased, the gas pressure is increased to trigger the pressure sensor, the pressure sensor transmits signals to the controller, the temperature sensor judges whether the gas temperature at the tower top is in a required range, the controller opens the second control valve according with the requirement, the tower plate moves up to push the gas to enter the first collection box through the liquid conveying pipe, and after the fractionation is finished, the low-phase component in the first collection box is taken out through the liquid outlet; the mutual matching of the tower plates and the rotating rings avoids the installation of multi-stage tower plates, reduces the height of the tower body and the energy consumption loss, and saves the production cost.
Preferably, a buoyancy sensing device is arranged at the bottom of the tower plate and comprises a mounting support, a buoy, a spring and a pressure sensor, the mounting support is fixedly connected to the lower surface of the tower plate, the buoy is slidably connected between the mounting supports, a cavity is formed between the buoy, the mounting support and the lower surface of the tower plate, the spring is fixedly connected between the buoy and the lower surface of the tower plate, the pressure sensor is mounted on the lower surface of the tower plate, the pressure sensor is located in the cavity formed between the buoy, the mounting support and the lower surface of the tower plate, and the pressure sensor is connected with the controller; when the tower plate is immersed in the stock solution, the buoy extrudes the spring upwards under the action of buoyancy, the volume of the cavity is reduced, the air pressure is increased to trigger the pressure sensor, and the pressure sensor transmits a signal to the controller to enable the sieve pores to be in an open state; when the tower plate moves upwards to the position above the liquid level, the buoy is free from the buoyancy effect, the sieve holes are closed through the controller, and the buoyancy sensing device can ensure that the tower plate is always positioned above the liquid level when the sieve holes are closed, so that the tower plate is prevented from moving upwards to push the stock solution out of the tower body together.
Preferably, a second collecting box is arranged above the first collecting box, the second collecting box is fixedly connected to the outer surface of the tower body and is positioned below the rotating ring, a third control valve is arranged on the side wall of the tower body and is communicated with the second collecting box and the inside of the tower body, the third control valve is positioned above the heating device and is connected with the controller; when the tower plate is operated, after the tower plate moves up and down for a period of time, the low-phase component is purified, after the controller sets the tower plate to circulate for a certain number of times, the third control valve is opened, the tower plate moves down, the high-phase component in the stock solution enters the second collecting box, after the low-phase component in the stock solution is completely fractionated, the third control valve is opened, the tower plate is controlled to move up, the liquid in the second collecting box is sucked into the tower body, the heating temperature is raised, and the next component can be continuously separated.
Preferably, the outer surface of the second collecting box is provided with a heat-insulating layer; during operation, the heat preservation keeps warm to the liquid in No. two collecting boxes, reduces liquid cooling rate, need follow low temperature and heat when preventing to fractionate once more, reduces the loss of energy consumption.
Preferably, one end of the infusion tube close to the first collecting box is wrapped in the heat-insulating layer, and the infusion tube is designed to spirally surround the tower body at the heat-insulating layer; during operation, because the liquid temperature in No. two collecting boxes descends, the gas temperature in the transfer line is greater than the liquid temperature in No. two collecting boxes, and the transfer line gives No. two collecting boxes heat transfer in heat preservation department, and No. two collecting box lateral wall department temperature risees, further keeps warm to incasement liquid, and the gas temperature descends in the transfer line and takes place the liquefaction, and liquid drops in No. one collecting box, improves the collection efficiency of product.
Preferably, a second telescopic rod is fixedly connected between the lower surface of the tower plate and the bottom of the tower body, the second telescopic rod is composed of a plurality of section arms, guide grooves are formed in the section arms, through holes are formed in two sides of each guide groove, and the through holes are communicated with the guide grooves and the outside; when the tower plate moves downwards, the section arm slides downwards to compress liquid in the guide groove and is sprayed out from the through hole, and the second telescopic rod stirs the liquid below the tower plate through liquid absorption and spraying, so that the liquid is prevented from precipitating, and the separation efficiency is improved.
The invention has the following beneficial effects:
1. according to the plate-type fractionating tower, the rotating ring and the tower plate are arranged, so that when the controller controls the tower plate to move downwards, the first control valve is closed, the sieve holes are opened, the stock solution is stirred, the low-phase component vaporization speed is accelerated, when the tower plate moves upwards, the sieve holes are closed, the first control valve is opened for liquid absorption, and the separated low-phase components are pushed to enter the first collecting box through the liquid conveying pipe, so that the multi-stage tower plate is avoided being installed, the height of the tower body is reduced, the installation, the maintenance and the replacement of the tower plate are facilitated, and the production cost and the energy consumption are reduced.
2. According to the plate-type fractionating tower, the second collecting box and the heat-insulating layer are arranged, when the tower plate moves up and down for a period of time, the low-phase component is purified, after the controller sets the tower plate to circulate for a certain number of times, the third control valve is opened, the tower plate moves down, the high-phase component in the stock solution enters the second collecting box, the heat-insulating layer insulates the liquid in the second collecting box to reduce the cooling speed of the liquid, when the low-phase component in the stock solution is completely fractionated, the third control valve is opened to control the tower plate to move up, the liquid in the second collecting box is sucked into the tower body, the heating temperature is increased, the next component can be continuously separated, the situation that heating from a low temperature position is needed when the next component is separated is avoided, and the loss of energy.
3. According to the plate-type fractionating tower, the second telescopic rod and the temperature sensor are arranged, when the tower plate moves up and down, the second telescopic rod stirs liquid below the tower plate through liquid absorption and spraying, so that the liquid is prevented from precipitating, and the separation efficiency is improved; the temperature sensor judges whether the gas temperature at the tower top is in a required range, and the product purity is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a cross-sectional view of the telescoping pole;
in the figure: the tower comprises a tower body 1, a tower cover 2, a liquid storage chamber 3, a first collecting box 4, a rotating ring 5, a first telescopic rod 6, a motor 7, a magnet block 8, a tower plate 9, a sieve hole 10, a rotating ring 11, a push rod 12, a heating device 13, a first control valve 14, a liquid outlet 15, a pressure sensor 16, a temperature sensor 17, a second control valve 18, a liquid conveying pipe 19, a buoyancy sensing device 20, a mounting support 21, a buoy 22, a spring 23, a pressure sensor 24, a second collecting box 25, a third control valve 26, a heat insulation layer 27, a second telescopic rod 28, a knuckle arm 29, a guide groove 30, a through hole 31 and a liquid guide pipe 32.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 3, the plate-type fractionating tower provided by the invention comprises a tower body 1, a tower cover 2, a liquid storage chamber 3, a first collecting box 4 and a controller, wherein the whole tower body 1 is of a cylindrical structure, the outer surface of the tower body 1 is connected with two rotating rings 5 in a sliding manner, the two rotating rings 5 are arranged up and down, the two rotating rings 5 are connected through a first telescopic rod 6, and the first telescopic rod 6 is connected with the controller; the rotating ring 5 above the first telescopic rod 6 is rotatably connected to the outer surface of the tower body 1, and insections are formed on the surface of one side, away from the tower body 1, of the rotating ring 5; the rotating ring 5 below the first telescopic rod 6 is connected to the outer surface of the tower body 1 in a sliding mode, and magnet blocks 8 which are uniformly distributed around the tower body 1 are installed inside the rotating ring 5; the outer surface of the tower body 1 is fixedly connected with a support, the support is positioned above the rotating ring 5, a motor 7 is fixedly connected below the support, the motor 7 is connected with a controller, a gear is arranged below the motor 7, and the gear is meshed with insections on the surface of the rotating ring 5 above the first telescopic rod 6; the tower comprises a tower body 1 and is characterized in that a tower plate 9 is connected to the inside of the tower body 1 in a sliding mode, the tower plate 9 is a circular plate, the tower plate 9 is designed in an I shape, sieve holes 10 which are radially and linearly arranged are formed in the upper surface and the lower surface of the tower plate 9, a rotating ring 11 is installed on the outer surface of the middle of the tower plate 9, push rods 12 which are uniformly distributed around the rotating ring 11 are fixedly connected to the rotating ring 11, the push rods 12 are in contact with the tower plate 9, and the rotating ring 11 drives the push rods 12 to rotate when rotating, so that the sieve; a magnet block is arranged at one end of the push rod 12, which is far away from the rotating ring 11, the magnetic pole of one end of the magnet block, which is close to the side wall of the tower body 1, is opposite to the magnetic pole of the magnet block 8 in the rotating ring 5, which is close to the side wall of the tower body 1, and the tower plate 9 and the rotating ring 5 below the first telescopic rod 6 are always kept at the same height through mutual attraction of the magnetic poles; a heating device 13 is arranged at the bottom of the tower body 1 close to the side wall; a liquid storage chamber 3 is arranged below the tower body 1, the liquid storage chamber 3 is used for containing stock solution, a first control valve 14 is arranged at the center of the bottom of the tower body 1, the first control valve 14 is connected with a controller, a liquid guide pipe 32 is connected below the first control valve 14, and one end of the liquid guide pipe 32 extends into the liquid storage chamber 3; the outer surface of the liquid storage chamber 3 is fixedly connected with a first collection box 4, and the bottom of the first collection box 4 is provided with a liquid outlet 15; the tower cover 2 is positioned at the top of the tower body 1, a pressure sensor 16 and a temperature sensor 17 are arranged on the inner surface of the tower cover 2, the pressure sensor 16 and the temperature sensor 17 are both connected with a controller, a second control valve 18 is arranged at the center of the tower cover 2, the second control valve 18 is connected with the controller, the second control valve 18 is externally connected with a liquid conveying pipe 19, and the liquid conveying pipe 19 is communicated with the first collecting box 4; when the tower plate opening and closing device works, the motor 7 is started through the controller, the motor 7 enables the rotating ring 5 to rotate around the tower body 1 through the rotation of the gear, and the rotating ring 5 drives the push rod 12 to rotate when rotating because the magnet block at the top end of the push rod 12 and the magnet block 8 in the rotating ring 5 are mutually attracted, so that the sieve holes 10 on the tower plate 9 are in a closed or open state; meanwhile, the controller controls the first telescopic rod 6 to stretch, the first telescopic rod 6 drives the rotating ring 5 to move up and down, the rotating ring 5 drives the tower plate 9 to move up and down, when the tower plate 9 moves up, the controller enables the push rod 12 to rotate above the sieve holes 10, the sieve holes 10 are in a closed state, the first control valve 14 is opened, the stock solution is sucked into the tower body 1 through the liquid guide pipe 32, the heating device 13 heats the stock solution, and when the tower plate 9 moves down, the first control valve 14 is closed, and the sieve holes 10 are opened; the tower plate 9 moves up and down circularly in the tower body 1 and stirs the stock solution, the low phase group component vaporization speed is accelerated, when the tower plate 9 moves up above the liquid level again, the sieve holes 10 are closed, the first control valve 14 is opened for liquid absorption, and after the low phase group component vaporization, the gas in the tower body 1 is increased, the gas pressure is increased to trigger the pressure sensor 16, the pressure sensor 16 transmits signals to the controller, the temperature sensor 17 judges whether the gas temperature at the tower top is in the required range, the controller opens the second control valve 18 according to the requirement, the tower plate 9 moves up to push the gas to enter the first collection box 4 through the liquid conveying pipe 19, and after the fractionation is finished, the low phase component in the first collection box 4 can be taken out through the liquid outlet 15; the mutual cooperation of the tower plates 9 and the rotating rings 5 avoids the installation of multi-stage tower plates 9, reduces the height of the tower body 1 and the energy consumption loss, and saves the production cost.
As an embodiment of the invention, a buoyancy sensing device 20 is arranged at the bottom of the tray 9, the buoyancy sensing device 20 comprises a mounting bracket 21, a buoy 22, a spring 23 and a pressure sensor 24, the mounting bracket 21 is fixedly connected to the lower surface of the tray 9, the buoy 22 is slidably connected between the mounting brackets 21, a cavity is formed between the buoy 22 and the lower surface of the tray 9, the spring 23 is fixedly connected between the buoy 22 and the lower surface of the tray 9, the pressure sensor 24 is arranged on the lower surface of the tray 9, the pressure sensor 24 is positioned in the cavity formed between the buoy 22 and the lower surfaces of the mounting brackets 21 and the tray 9, and the pressure sensor 24 is connected with a controller; when the tower plate 9 is immersed in the stock solution, the buoy 22 pushes the spring 23 upwards under the action of buoyancy, the volume of the cavity is reduced, the air pressure is increased to trigger the pressure sensor 24, and the pressure sensor 24 transmits a signal to the controller to enable the sieve holes 10 to be in an open state; when the tower plate 9 moves upwards to the position above the liquid level, the buoy 22 is not under the action of buoyancy, the sieve holes 10 are closed through the controller, and the buoyancy sensing device 20 can ensure that the tower plate 9 is always positioned above the liquid level when the sieve holes 10 are closed, so that the tower plate 9 is prevented from moving upwards to push the stock solution out of the tower body 1 together.
As an embodiment of the invention, a second collecting box 25 is arranged above the first collecting box 4, the second collecting box 25 is fixedly connected to the outer surface of the tower body 1, the second collecting box 25 is positioned below the rotating ring 5, a third control valve 26 is arranged on the side wall of the tower body 1, the third control valve 26 is communicated with the second collecting box 25 and the inside of the tower body 1, the third control valve 26 is positioned above the heating device 13, and the third control valve 26 is connected with a controller; when the separation device works, after the tower plate 9 moves up and down for a period of time, the low-phase component is purified, after the controller sets the circulation of the tower plate 9 for a certain number of times, the third control valve 26 is opened, the tower plate 9 moves down, the high-phase component in the stock solution enters the second collection box 25, the pressure in the tower body 1 can be reduced by proper discharge of the liquid, after the low-phase component in the stock solution is completely fractionated, the third control valve 26 is opened, the tower plate 9 is controlled to move up, the liquid in the second collection box 25 is sucked into the tower body 1, the heating temperature is increased, and the next component can be continuously separated.
As an embodiment of the invention, the second collecting box 25 is provided with an insulating layer 27 on the outer surface; during operation, the heat preservation layer 27 keeps warm to the liquid in the second collecting box 25, reduces the liquid cooling speed, and the loss of energy consumption is reduced to the low temperature department heating of need when preventing to fractionate once more.
As an embodiment of the invention, one end of the infusion tube 19 close to the first collection box 4 is wrapped in the heat insulation layer 27, and the infusion tube 19 is designed to spirally surround the tower body 1 at the heat insulation layer 27; during operation, because the liquid temperature in No. two collecting box 25 descends, the gas temperature in transfer line 19 is greater than the liquid temperature in No. two collecting box 25, and transfer line 19 is in thermal insulation layer 27 department with heat transfer for No. two collecting box 25, and No. two collecting box 25 lateral wall department temperature risees, further keeps warm to incasement liquid, and the gas temperature descends in transfer line 19 and takes place the liquefaction, and liquid drops in collecting box 4, improves the collection efficiency of product.
As an embodiment of the invention, a second telescopic rod 28 is fixedly connected between the lower surface of the tower plate 9 and the bottom of the tower body 1, the second telescopic rod 28 is composed of a plurality of section arms 29, a guide groove 30 is formed inside each section arm 29, through holes 31 are formed in two sides of each guide groove 30, and each through hole 31 is communicated with the guide groove 30 and the outside; when the tower plate 9 moves upwards, the knuckle arm 29 slides upwards in the guide groove 30 to open the through hole 31, liquid is sucked into the guide groove 30, when the tower plate 9 moves downwards, the knuckle arm 29 slides downwards to compress the liquid in the guide groove 30, the liquid is sprayed out from the through hole 31, and the second telescopic rod 28 stirs the liquid below the tower plate 9 through liquid suction and spraying, so that the liquid is prevented from precipitating, and the separation efficiency is improved.
The specific working process of the invention is as follows:
when the tower plate opening and closing device works, the motor 7 is started through the controller, the motor 7 enables the rotating ring 5 to rotate around the tower body 1 through the rotation of the gear, and the rotating ring 5 drives the push rod 12 to rotate when rotating because the magnet block at the top end of the push rod 12 and the magnet block 8 in the rotating ring 5 are mutually attracted, so that the sieve holes 10 on the tower plate 9 are in a closed or open state; meanwhile, the controller controls the first telescopic rod 6 to extend and retract, the first telescopic rod 6 drives the rotating ring 5 to move up and down, and the rotating ring 5 drives the tower plate 9 to move up and down; when the tower plate 9 moves upwards, the controller enables the push rod 12 to rotate above the sieve holes 10, the sieve holes 10 are in a closed state, the first control valve 14 is opened, the stock solution is sucked into the tower body 1 through the liquid guide pipe 32, the heating device 13 heats the stock solution, and when the tower plate 9 moves downwards, the first control valve 14 is closed, and the sieve holes 10 are opened; meanwhile, the tower plate 9 can drive the second telescopic rod 28 to move when circularly moving up and down in the tower body 1, when the tower plate 9 moves up, the knuckle arm 29 slides upwards in the guide groove 30 to open the through hole 31, liquid is sucked into the guide groove 30, when the tower plate 9 moves down, the knuckle arm 29 slides downwards to compress the liquid in the guide groove 30, the liquid is sprayed out from the through hole 31, and the second telescopic rod 28 stirs the liquid below the tower plate 9 through liquid suction and spraying, so that the liquid is prevented from precipitating, the low-phase component vaporization speed is accelerated, and the separation efficiency is improved; when the tower plate 9 moves upwards above the liquid level again, the sieve holes 10 are closed, the first control valve 14 is opened for liquid absorption, after the low-phase component is vaporized, the gas in the tower body 1 is increased, the gas pressure is increased to trigger the pressure sensor 16, the pressure sensor 16 transmits a signal to the controller, the temperature sensor 17 judges whether the gas temperature at the tower top is in a required range, the controller is in accordance with the requirement to open the second control valve 18, the tower plate 9 moves upwards to push the gas to enter the first collection box 4 through the liquid conveying pipe 19, and after fractionation is completed, the low-phase component in the first collection box 4 can be taken out through the liquid outlet 15; in order to ensure that the tower plate 9 is always positioned above the liquid level when the sieve holes 10 are closed, the bottom of the tower plate 9 is provided with a buoyancy sensing device 20, when the tower plate 9 is immersed in the stock solution, the buoy 22 is upwards extruded by the action of buoyancy to the spring 23, the volume of the cavity is reduced, the air pressure is increased to trigger the pressure sensor 24, and the pressure sensor 24 transmits a signal to the controller to enable the sieve holes 10 to be in an open state; when the tower plate 9 moves upwards to the position above the liquid level, the buoy 22 is not influenced by buoyancy, and the sieve holes 10 are closed by the controller, so that the tower plate 9 is prevented from moving upwards to push the stock solution out of the tower body 1 together.
After the tower plate 9 moves up and down for a period of time, the low-phase component is purified, after the certain number of times of circulation of the tower plate 9 is set by the controller, the third control valve 26 is opened, the tower plate 9 moves down, the high-phase component in the stock solution enters the second collecting box 25, the pressure in the tower body 1 can be reduced by proper discharge of the liquid, after the low-phase component in the stock solution is completely fractionated, the third control valve 26 is opened to control the tower plate 9 to move up, the liquid in the second collecting box 25 is sucked into the tower body 1, the heating temperature is raised, the next component can be continuously separated, as the heat preservation layer 27 preserves the heat of the liquid in the second collecting box 25, the cooling speed of the liquid is reduced, the heating from the low temperature position is not needed during the secondary fractionation, and the loss of energy consumption; meanwhile, the infusion tube 19 is designed to be spirally surrounded at the heat preservation layer 27, when the temperature of liquid in the second collecting box 25 is reduced, the infusion tube 19 transfers heat to the second collecting box 25 at the heat preservation layer 27, the temperature of the side wall of the second collecting box 25 is increased, the liquid in the box is further preserved, the temperature of the gas in the infusion tube 19 is reduced to be liquefied, and the liquid falls into the first collecting box 4, so that the collecting efficiency of the product is improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A plate fractionation column, characterized by: the tower comprises a tower body (1), a tower cover (2), a liquid storage chamber (3), a first collecting box (4) and a controller, wherein the whole tower body (1) is of a cylindrical structure, rotating rings (5) are mounted on the outer surface of the tower body (1), the number of the rotating rings (5) is two, the two rotating rings (5) are arranged up and down, the two rotating rings (5) are connected through a first telescopic rod (6), and the first telescopic rod (6) is connected with the controller; the rotating ring (5) above the first telescopic rod (6) is rotatably connected to the outer surface of the tower body (1), and insections are formed on the surface of one side, away from the tower body (1), of the rotating ring (5); a rotating ring (5) below the first telescopic rod (6) is connected to the outer surface of the tower body (1) in a sliding manner, and magnet blocks (8) which are uniformly distributed around the tower body (1) are installed inside the rotating ring (5); the outer surface of the tower body (1) is fixedly connected with a support, the support is positioned above the rotating ring (5), a motor (7) is fixedly connected below the support, the motor (7) is connected with a controller, a gear is arranged below the motor (7), and the gear is meshed with insections on the surface of the rotating ring (5) above the first telescopic rod (6); the tower plate (9) is connected to the inside of the tower body (1) in a sliding mode, the tower plate (9) is a circular plate, the tower plate (9) is designed in an I shape, sieve holes (10) which are radially and linearly arranged are formed in the upper surface and the lower surface of the tower plate (9), a rotating ring (11) is installed on the outer surface of the middle of the tower plate (9), push rods (12) which are uniformly distributed around the rotating ring (11) are fixedly connected to the rotating ring (11), and the push rods (12) are in contact with the tower plate (9); a magnet block is mounted at one end of the push rod (12) far away from the rotating ring (11), and the magnetic pole of one end of the magnet block close to the side wall of the tower body (1) is opposite to the magnetic pole of the magnet block (8) in the rotating ring (5) close to the side wall of the tower body (1); a heating device (13) is arranged at the bottom of the tower body (1) close to the side wall; a liquid storage chamber (3) is arranged below the tower body (1), a first control valve (14) is arranged at the center of the bottom of the tower body (1), the first control valve (14) is connected with a controller, a liquid guide pipe (32) is connected below the first control valve (14), and one end of the liquid guide pipe (32) extends into the liquid storage chamber (3); the outer surface of the liquid storage chamber (3) is fixedly connected with a first collection box (4), and the bottom of the first collection box (4) is provided with a liquid outlet (15); tower lid (2) are located body of the tower (1) top, tower lid (2) internal surface is provided with pressure sensors (16) and temperature-sensing ware (17), pressure sensors (16) and temperature-sensing ware (17) all link to each other with the controller, tower lid (2) center department is provided with No. two control valves (18), No. two control valves (18) link to each other with the controller, No. two external transfer line (19) of control valve (18), transfer line (19) and collecting box (4) intercommunication.
2. A plate fractionator according to claim 1, wherein: the buoyancy sensing device (20) is arranged at the bottom of the tower plate (9), the buoyancy sensing device (20) comprises mounting supports (21), buoys (22), springs (23) and pressure sensors (24), the mounting supports (21) are fixedly connected to the lower surface of the tower plate (9), the buoys (22) are connected between the mounting supports (21) in a sliding mode, cavities are formed among the buoys (22), the mounting supports (21) and the lower surface of the tower plate (9), the springs (23) are fixedly connected between the buoys (22) and the lower surface of the tower plate (9), the pressure sensors (24) are mounted on the lower surface of the tower plate (9), the pressure sensors (24) are located in the cavities formed among the buoys (22), the mounting supports (21) and the lower surface of the tower plate (9), and the pressure sensors (24) are.
3. A plate fractionator according to claim 1, wherein: no. two collecting box (25) are arranged above the first collecting box (4), the second collecting box (25) is fixedly connected to the outer surface of the tower body (1), the second collecting box (25) is located below the rotating ring (5), the side wall of the tower body (1) is provided with a third control valve (26), the third control valve (26) is communicated with the second collecting box (25) and the inside of the tower body (1), the third control valve (26) is located above the heating device (13), and the third control valve (26) is connected with the controller.
4. A plate fractionator according to claim 3, wherein: and the outer surface of the second collecting box (25) is provided with a heat-insulating layer (27).
5. A plate fractionator according to claim 4, wherein: one end of the infusion tube (19) close to the first collecting box (4) is wrapped in the heat preservation layer (27), and the infusion tube (19) is designed to spirally surround the tower body (1) at the heat preservation layer (27).
6. A plate fractionator according to claim 1, wherein: the tower plate is characterized in that a second telescopic rod (28) is fixedly connected between the lower surface of the tower plate (9) and the bottom of the tower body (1), the second telescopic rod (28) is composed of a plurality of section arms (29), guide grooves (30) are formed in the section arms (29), through holes (31) are formed in two sides of each guide groove (30), and the through holes (31) are communicated with the guide grooves (30) and the inside of the tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717537.5A CN111821711A (en) | 2020-07-23 | 2020-07-23 | Plate type fractionating tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717537.5A CN111821711A (en) | 2020-07-23 | 2020-07-23 | Plate type fractionating tower |
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| Publication Number | Publication Date |
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| CN111821711A true CN111821711A (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010717537.5A Withdrawn CN111821711A (en) | 2020-07-23 | 2020-07-23 | Plate type fractionating tower |
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| Country | Link |
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| CN (1) | CN111821711A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112299987A (en) * | 2020-11-18 | 2021-02-02 | 山东斯瑞药业有限公司 | Acrylic acid purification dehydrogenation tower |
| CN114984604A (en) * | 2022-06-30 | 2022-09-02 | 张闻龙 | Continuous double-tower distillation system |
| CN115999180A (en) * | 2023-02-21 | 2023-04-25 | 河南海源精细化工有限公司 | Fractionation device and method for producing propargyl alcohol |
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Application publication date: 20201027 |