CN220588973U - Plate type fractionating tower - Google Patents

Abstract

The utility model discloses a plate fractionating tower, and relates to the field of fractionating towers. The plate fractionating tower comprises a tower body and tower plates, wherein the tower plates are fixedly connected in the tower body from top to bottom at equal intervals, and the plate fractionating tower further comprises: the downcomers are fixedly connected to one side of the tower plate, and the downcomers on each tower plate are staggered; a plurality of through holes are formed in the column plate at equal intervals, a vertical pipe is fixedly connected in each through hole, and the upper end face of the vertical pipe is higher than the upper end face of the downcomer; the utility model avoids the problem that the prior art increases the throughput of liquid caused by increasing sieve holes, thereby possibly causing insufficient contact mass transfer between liquid and gas, and simultaneously can increase the flow of gas by changing the size of the channel between the gas guide port and the vertical pipe, thereby ensuring the diffusion range of gas in more viscous liquid and effectively improving the mass transfer effect between liquid and gas.

Description

Plate type fractionating tower

Technical Field

The utility model belongs to the technical field of fractionating towers, and particularly relates to a plate fractionating tower.

Background

Fractionation is a common method for separating liquid mixtures by utilizing the boiling point difference of the liquid mixtures, and various oil products can be separated by using the method in the petroleum refining process, and a plate type fractionating tower is a common separating device for petrochemical enterprises and consists of a cylindrical tower body, a plurality of tower plates horizontally arranged in the tower at certain intervals and the like.

Taking a gas-liquid system as an example, when the existing plate-type fractionating tower tray is used, liquid sequentially flows through all layers of tower plates from top to bottom under the action of gravity and is discharged from the bottom of the tower; under the pushing of pressure difference, the gas passes through each layer of tower plates from bottom to top in turn, and is discharged to the top of the tower, a liquid layer with a certain depth is kept on each tower plate, the gas is dispersed into the liquid layer through the tower plates, and the gas and the liquid are subjected to heat exchange continuously to carry out phase contact mass transfer, so that the gas can be separated from volatile substances in the liquid.

In the prior art, application number: CN202210501729.1, filing date: 2022-05-09, entitled a plate fractionation column, discloses a plate fractionation column; comprises a tower body, a base, an air inlet, an air outlet, a liquid inlet, a liquid outlet, a tower plate, an overflow weir and a downcomer; the lower part of the right side of the tower body is provided with an air inlet, the top of the tower body is provided with an air outlet, the upper part of the left side of the tower body is provided with a liquid inlet, and the bottom of the tower body is provided with a liquid outlet; the inside of the tower body is fixedly connected with a plurality of groups of tower plates in sequence from top to bottom, the upper surface of the tower plate is provided with sieve holes, the edges of the sieve holes are provided with sliding blocks, the tower plates are provided with grooves for placing the sliding blocks, the sliding blocks are in sliding connection with the grooves, the edges of the tower plates are fixedly connected with overflow weirs, the overflow weirs are matched with the inner wall of the tower body to form a downcomer, and the downcomer is arched; the utility model is provided with the sliding blocks and the grooves at the edges of the sieve holes, and the sliding blocks and the grooves are matched with each other, and the size of the sieve holes is controlled by changing the flow of the gas, so that the plate type fractionating tower has wider application range

The above patent has proposed the present utility model in view of the fact that the size of the sieve holes can be controlled by changing the flow rate of the gas to avoid clogging of the sieve holes, but the throughput of the liquid increases after the sieve holes are enlarged, which may cause insufficient contact mass transfer between the liquid and the gas.

Disclosure of Invention

The technical problem to be solved by the present utility model is to overcome the disadvantages of the prior art by providing a tray fractionation column which overcomes or at least partially solves the above mentioned problems.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: the utility model provides a plate fractionating tower, includes tower body and column plate, column plate from top to bottom equidistant fixed connection is in the tower body, one side upper end fixedly connected with feed liquor pipe of tower body, one side lower extreme fixedly connected with intake pipe of tower body, the bottom fixedly connected with fluid-discharge tube of tower body, the top fixedly connected with blast pipe of tower body still includes: the downcomers are fixedly connected to one side of the tower plate, and the downcomers on each tower plate are staggered; a plurality of through holes are formed in the column plate at equal intervals, a vertical pipe is fixedly connected in each through hole, and the upper end face of the vertical pipe is higher than the upper end face of the downcomer; the umbrella-shaped plate is fixedly connected to the upper end of the vertical pipe through a supporting rod; the conical fluted disc is rotationally connected to the bottom of the tower plate and is in sliding connection with the lower surface of the tower plate, wherein a plurality of air guide ports which are the same as the vertical pipes are formed in the conical fluted disc at equal intervals; the rotating rod is rotationally connected to one side of the tower body, which is far away from the downcomer, through a bearing; the bevel gear is fixedly connected to one end of the rotating rod, which is close to the conical fluted disc, and is meshed with the conical fluted disc.

In order to be convenient for cushion liquid, further, the downpipe is interior from top to bottom staggered to be equipped with the buffer board, rotate between buffer board and the inner wall of downcomer and be connected, one side below fixedly connected with buffer spring that the buffer board kept away from the rotation end, buffer spring keeps away from the one end of buffer board and the inner wall fixed connection of downcomer.

In order to further buffer the liquid, further, one side of the tray close to the downcomer is fixedly connected with an arc plate.

In order to facilitate the liquid to smoothly flow onto the tower plate, the liquid inlet pipe is fixedly connected to the tower body at a position close to the uppermost tower plate, and the lower side of the inner wall of the liquid inlet pipe and the upper surface of the tower plate are on the same plane.

In order to be convenient for carry out abundant fractionation to liquid, further, feed liquor pipe and fluid-discharge tube set up in same one side, one side that the tower body is close to the feed liquor pipe is through support fixedly connected with suction pump, the business turn over liquid mouth punishment fixedly connected with first hose, second hose of suction pump, the liquid outlet department of fluid-discharge tube is connected with electromagnetic valve, the return port has all been seted up on feed liquor pipe and the fluid-discharge tube respectively, first hose, second hose are linked together with fluid-discharge tube, the return port on the feed liquor pipe respectively.

In order to facilitate that hot steam can uniformly pass through each vertical pipe and can fully exchange heat with liquid, further, the position of the lower end in the tower body, which is close to the air inlet pipe, is fixedly connected with an air jet box through a cross rod, an air inlet of the air jet box is communicated with the air inlet pipe, and a plurality of air jet openings are formed in the upper end of the air jet box.

After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects: according to the utility model, through the cooperation of the vertical pipe, the umbrella-shaped plate, the conical fluted disc, the rotating rod and the bevel gear, liquid can only flow downwards through the downcomer, so that the problem that in the prior art, the throughput of the liquid is increased due to the increase of sieve holes, so that insufficient contact mass transfer between the liquid and gas can be caused is avoided, and meanwhile, the flow of the gas can be increased by changing the size of a channel between the gas guide port and the vertical pipe, so that the diffusion range of the gas in the relatively viscous liquid can be ensured, the heated volatilizing efficiency of volatile matters in the liquid can be increased, and the mass transfer effect between the liquid and the gas is effectively improved.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a schematic perspective view of a plate fractionation column according to the present utility model;

FIG. 2 is a schematic diagram of a plate fractionation column according to the present utility model;

FIG. 3 is a schematic view of the structure of the portion A of FIG. 2 of a plate fractionation column according to the present utility model;

FIG. 4 is a schematic view of the downcomer, buffer plate and buffer spring in a plate fractionation column according to the present utility model.

In the figure: 1. a tower body; 101. a liquid inlet pipe; 102. an air inlet pipe; 103. a liquid discharge pipe; 104. an exhaust pipe; 2. a tray; 3. a standpipe; 4. an umbrella-shaped plate; 5. conical fluted disc; 6. a rotating lever; 7. bevel gears; 8. a downcomer; 9. an arc-shaped plate; 10. a buffer plate; 11. a buffer spring; 12. an air jet box; 13. and a suction pump.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

Example 1:

referring to fig. 1-4, a plate-type fractionating tower, including tower body 1 and column plate 2, column plate 2 from top to bottom equidistant fixed connection is in tower body 1, and one side upper end fixedly connected with feed liquor pipe 101 of tower body 1, one side lower extreme fixedly connected with intake pipe 102 of tower body 1, the bottom fixedly connected with fluid-discharge tube 103 of tower body 1, the top fixedly connected with blast pipe 104 of tower body 1 still includes: the downcomers 8 are fixedly connected to one side of the tower plates 2, and the downcomers 8 on each tower plate 2 are arranged in a staggered manner; a plurality of through holes are formed in the column plate 2 at equal intervals, a vertical pipe 3 is fixedly connected in each through hole, and the upper end surface of the vertical pipe 3 is higher than the upper end surface of the downcomer 8; the umbrella-shaped plate 4 is fixedly connected to the upper end of the vertical pipe 3 through a supporting rod; the conical fluted disc 5 is rotationally connected to the bottom of the tower plate 2 and is in sliding connection with the lower surface of the tower plate 2, wherein a plurality of air guide ports which are the same as the vertical pipes 3 are arranged on the conical fluted disc 5 at equal intervals; the rotating rod 6 is rotatably connected to one side of the tower body 1 far away from the downcomer 8 through a bearing; the bevel gear 7 is fixedly connected to one end of the rotating rod 6, which is close to the conical fluted disc 5, and is meshed with the conical fluted disc 5.

In the industrial chemical industry field, when the liquid needs to be fractionated so as to fractionate volatile matters in the liquid, at this time, a worker firstly transports the fractionating tower to a work designated position, then communicates the liquid inlet pipe 101 with an external liquid transporting device, then communicates the air inlet pipe 102 with an external hot vapor transporting device, then communicates the liquid outlet pipe 103 with the air outlet pipe 104 with an external storage device respectively, after the former work is ready, the fractionation operation is performed at this time, when the fractionation is performed, the worker simultaneously starts the external liquid transporting device and the hot vapor transporting device, then the liquid and the hot vapor needing to be fractionated are transported to the upper end and the lower end in the tower body 1 respectively through the liquid inlet pipe 101 and the air inlet pipe 102, then the liquid is transported to the tower plate 2, and as the liquid on the tower plate 2 is continuously increased, when the liquid passes through the upper end of the downcomer 8, the liquid downwards flows onto the next layer of tower plates 2 through the downcomer 8 under the action of gravity, and the hot steam sequentially passes through each layer of tower plates 2 from bottom to top and is discharged from the exhaust pipe 104 at the top of the tower, when the hot steam upwards flows, the hot steam is conveyed into the vertical pipe 3 through the air guide opening of the conical fluted disc 5 and upwards flows into the umbrella-shaped plate 4 through the vertical pipe 3, the hot steam blown into the umbrella-shaped plate 4 is circularly diffused along the inner wall of the umbrella-shaped plate 4, so that the contact area between the hot steam and the liquid can be increased, the heated volatilizing efficiency of volatilizing substances in the liquid can be increased, the mass transfer effect between the liquid and the gas can be effectively improved, when some more viscous liquid needs to be fractionated, the staff rotates the rotating rod 6, the rotating rod 6 drives the conical fluted disc 5 to rotate through the bevel gear 7, so that the position of the air guide opening on the conical fluted disc 5 can be changed, the area where the air guide opening is communicated with the vertical tube 3 is reduced, then when hot steam enters the vertical tube 3 through the air guide opening, the flowing speed of the hot steam is increased due to the reduced communicated channel, so that the speed of the hot steam during diffusion can be increased, the hot steam can be ensured to be fully subjected to heat exchange with more viscous liquid, the more viscous liquid is conveniently separated, the upper end face of the vertical tube 3 is higher than the upper end face of the downcomer 8, after the liquid reaches a certain height, the liquid only flows downwards through the downcomer 8 and does not flow downwards through the vertical tube 3, compared with the prior art, the method can avoid the phenomenon that the liquid flows downwards at a higher speed and the time contacted with gas is shorter, thereby influencing the heat exchange efficiency and effectively ensuring the separation efficiency of the volatile substances of the liquid.

Example 2:

referring to fig. 1-4, a plate fractionation column, substantially the same as in example 1, further: the buffer plates 10 are arranged in the downcomers 8 in a staggered manner from top to bottom, the buffer plates 10 are rotationally connected with the inner walls of the downcomers 8, a buffer spring 11 is fixedly connected below one side of the buffer plates 10 away from the rotating end, one end of each buffer spring 11 away from each buffer plate 10 is fixedly connected with the inner walls of the downcomers 8, when liquid with a certain depth accumulated on the tray 2 does not pass through the downcomers 8, the liquid can flow downwards onto the tray 2 of the next layer through the downcomers 8, when the liquid flowing in the downcomers 8 falls onto the buffer plates 10, the buffer plates 10 can compress the buffer springs 11, so that the impact force generated by free falling of the liquid can be absorbed, the effect of buffering the liquid can be achieved, the impact of the liquid on the tray 2 of the next layer is avoided, the liquid generates foam, the generation of foam is reduced, and the mass transfer effect before the liquid and gas is effectively improved;

the arc plate 9 is fixedly connected to one side of the tray 2 close to the downcomer 8, and when liquid flows downwards from the downcomer 8, the liquid flows onto the tray 2 along the slope of the arc plate 9 by arranging the arc plate 9 below the tray 2 close to the downcomer 8, so that the liquid is prevented from directly impacting the tray 2, and the generation of foam is further reduced;

the liquid inlet pipe 101 is fixedly connected to the tower body 1 at a position close to the uppermost tray 2, the lower side of the inner wall of the liquid inlet pipe 101 is on the same plane with the upper surface of the tray 2, and liquid is conveyed into the tower body 1 through the liquid inlet pipe 101 by arranging the liquid inlet pipe 101 at a position close to the tray 2, so that the liquid can smoothly flow onto the tray 2, the liquid and the tray 2 are prevented from impacting, foam is generated, and the foam is further reduced.

Example 3:

referring to fig. 1-4, a plate fractionation column, substantially the same as in example 2, further: the liquid inlet pipe 101 and the liquid outlet pipe 103 are arranged on the same side, one side of the tower body 1 close to the liquid inlet pipe 101 is fixedly connected with a suction pump 13 through a bracket, a liquid inlet and a liquid outlet of the suction pump 13 are respectively and fixedly connected with a first hose and a second hose, a liquid outlet of the liquid outlet pipe 103 is connected with an electromagnetic valve, return ports are respectively formed in the liquid inlet pipe 101 and the liquid outlet pipe 103, the first hose and the second hose are respectively communicated with the liquid outlet pipe 103 and the return ports on the liquid inlet pipe 101, when the liquid after heat exchange is conducted to the bottom of the tower body 1 and is conveyed into the liquid inlet pipe 103, the electromagnetic valve is firstly closed, then the suction pump 13 is started, the liquid in the liquid outlet pipe 103 is pumped out through the first hose, and then the liquid is conveyed into the liquid inlet pipe 101 through the second hose, so that the liquid is returned into the tower body 1 again, the volatile matters in the liquid are separated and discharged from the liquid, and the efficiency of fractional distillation is further improved;

the position that tower body 1 inside lower extreme is close to intake pipe 102 is through horizontal pole fixedly connected with fumarole 12, the air inlet of fumarole 12 is linked together with intake pipe 102, a plurality of fumaroles have been seted up to the upper end of fumarole 12, when carrying hot steam in to tower body 1 through intake pipe 102, hot steam can be carried into fumarole 12 earlier, then the even upward blowout of a plurality of fumaroles of hot steam rethread, compared with the mode that directly lets in hot steam in the fractionating tower through the trachea that transversely sets up in the prior art, the problem that transversely carries hot steam has been avoided, cause hot steam can not evenly pass through every standpipe 3, and this fractionating tower can make hot steam evenly pass through every standpipe 3, thereby make hot steam can be abundant carry out heat exchange with liquid, the distillation effect is improved.

According to the utility model, through the cooperation of the vertical pipes 3, the umbrella-shaped plates 4, the conical fluted disc 5, the rotating rods 6 and the bevel gears 7, liquid can flow downwards only through the downcomers 8, so that the problem that in the prior art, the throughput of the liquid is increased due to the increase of sieve holes, and the mass transfer between the liquid and gas cannot be fully carried out is avoided, and meanwhile, the flow rate of the gas can be increased by changing the size of a channel between the air guide port and the vertical pipes 3, so that the diffusion range of the gas in the relatively viscous liquid can be ensured, the heated volatilization efficiency of volatile substances in the liquid can be increased, and the mass transfer effect between the liquid and the gas is effectively improved.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.

Claims (6)

1. The utility model provides a plate fractionating tower, includes tower body (1) and column plate (2), its characterized in that, column plate (2) from top to bottom equidistant fixed connection is in tower body (1), one side upper end fixedly connected with feed liquor pipe (101) of tower body (1), one side lower extreme fixedly connected with intake pipe (102) of tower body (1), the bottom fixedly connected with fluid-discharge tube (103) of tower body (1), the top fixedly connected with blast pipe (104) of tower body (1), still include:

the downcomers (8) are fixedly connected to one side of the tower plates (2), and the downcomers (8) on each tower plate (2) are arranged in a staggered manner;

a plurality of through holes are formed in the column plate (2) at equal intervals, a vertical pipe (3) is fixedly connected in each through hole, and the upper end face of the vertical pipe (3) is higher than the upper end face of the downcomer (8);

an umbrella-shaped plate (4) fixedly connected to the upper end of the vertical pipe (3) through a supporting rod;

a conical fluted disc (5) which is rotationally connected with the bottom of the column plate (2) and is connected with the lower surface of the column plate (2) in a sliding way,

wherein a plurality of air guide ports which are the same as the vertical pipes (3) are formed in the conical fluted disc (5) at equal intervals;

the rotating rod (6) is rotationally connected to one side of the tower body (1) far away from the downcomer (8) through a bearing;

the bevel gear (7) is fixedly connected to one end of the rotating rod (6) close to the conical fluted disc (5) and meshed with the conical fluted disc (5).

2. A plate fractionation column as claimed in claim 1 wherein: the utility model discloses a downcomer, including downcomer (8), buffer board (10) are equipped with from top to bottom in the downcomer (8), rotate between the inner wall of buffer board (10) and downcomer (8) and be connected, one side below fixedly connected with buffer spring (11) that the rotation end was kept away from to buffer board (10), the inner wall fixed connection of one end and downcomer (8) that buffer spring (11) kept away from buffer board (10).

3. A plate fractionation column as claimed in claim 2 wherein: one side of the tray (2) close to the downcomer (8) is fixedly connected with an arc-shaped plate (9).

4. A plate fractionation column according to claim 3, wherein: the liquid inlet pipe (101) is fixedly connected to the tower body (1) at a position close to the uppermost tray (2), and the lower side of the inner wall of the liquid inlet pipe (101) and the upper surface of the tray (2) are on the same plane.

5. A plate fractionation column as claimed in claim 1 wherein: the liquid inlet pipe (101) and the liquid discharge pipe (103) are arranged on the same side, one side, close to the liquid inlet pipe (101), of the tower body (1) is fixedly connected with a suction pump (13) through a support, a liquid inlet and outlet of the suction pump (13) is fixedly connected with a first hose and a second hose respectively, a liquid outlet of the liquid discharge pipe (103) is connected with an electromagnetic valve, return ports are respectively formed in the liquid inlet pipe (101) and the liquid discharge pipe (103), and the first hose and the second hose are respectively communicated with the liquid discharge pipe (103) and the return ports in the liquid inlet pipe (101).

6. A plate fractionation column as claimed in claim 1 wherein: the gas spraying device is characterized in that a gas spraying box (12) is fixedly connected to the position, close to the gas inlet pipe (102), of the lower end of the inner part of the tower body (1) through a cross rod, a gas inlet of the gas spraying box (12) is communicated with the gas inlet pipe (102), and a plurality of gas spraying ports are formed in the upper end of the gas spraying box (12).