Anti-blocking rectifying tower

Abstract

The utility model relates to the technical field of chemical engineering, and provides an anti-blocking rectifying tower which comprises a tower body, a condenser and a reboiler, the tower body is provided with a first cavity; a feeding pipe is fixedly arranged on the side wall of the tower body; a gas outlet pipe is fixedly arranged at the top end of the tower body; one end of the gas outlet pipe is communicated with the first cavity; a liquid inlet pipe is fixedly arranged at the bottom end of the tower body, and one end of the liquid inlet pipe is communicated with the first cavity; the condenser is provided with a second cavity, and the other end of the air outlet pipe communicates with the top end of the second cavity. A first liquid outlet pipe is fixedly arranged at the bottom end of the condenser; the reboiler is provided with a third cavity, and the other end of the liquid inlet pipe is communicated with the bottom end of the third cavity; the end part of the reboiler is communicated with the bottom end of the first cavity through an air inlet pipe; a plurality of tower plates are fixedly arranged on the inner wall of the tower body; the partition plate is arranged, the holes are evenly formed in the partition plate, gas on the surface of the heat exchange tube is evenly distributed, and therefore water, carbon dioxide, acetylene and hydrocarbon on the surface are removed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to an anti-blocking distillation tower. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device for distillation. There are two main types: plate tower and packed tower. The main function of a distillation tower is to separate mixed liquids. It uses the principle that different liquids have different volatilities under different conditions, such as different temperatures, to separate liquids. The bottom of the tower is liquid, and gas is distilled from the top of the tower, thereby achieving a purification effect. It is widely used in chemical, petrochemical, metallurgical, light industry, textile, alkali, pharmaceutical, pesticide, electroplating, electronics and other fields.

[0003] Since water, carbon dioxide, acetylene and hydrocarbons are high-boiling-point substances, under normal working conditions of the condenser-evaporator, half of the heat exchanger in the condenser-evaporator is soaked in high-boiling-point media such as oxygen-rich liquid and liquid oxygen. After the condenser-evaporator has been running for a period of time, the water and carbon dioxide on the surface of the heat exchanger will gradually block the heat exchanger. In production, this is manifested as increasing resistance of the heat exchanger, reducing the free cross-section for gas circulation, and preventing air from entering. The amount of carbon dioxide brought into the tower is much greater than the theoretical content, and will gradually accumulate in the tower, causing blockage of the tower plates, pipes and valves, threatening the safe production of the air separation equipment.

[0004] Therefore, there is an urgent need for a distillation tower that is anti-clogging and can remove gas from the surface of a heat exchanger. Utility Model Content

[0005] The utility model aims to provide a distillation tower which is resistant to blockage in view of the deficiencies in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A blockage-resistant distillation tower, characterized in that it comprises: a tower body, a condenser connected to a top pipe of the tower body, and a reboiler connected to a bottom pipe of the tower body; wherein:

[0008] The tower body has a first cavity; a feed pipe is fixedly arranged on the side wall of the tower body, and the feed pipe is connected to the first cavity; an air outlet pipe is fixedly arranged on the top of the tower body, and one end of the air outlet pipe is connected to the first cavity; a liquid inlet pipe is fixedly arranged on the bottom end of the tower body, and one end of the liquid inlet pipe is connected to the first cavity;

[0009] The condenser has a second cavity, and the other end of the gas outlet pipe is connected to the top of the second cavity; the bottom end of the condenser is fixedly provided with a first liquid outlet pipe, and one end of the first liquid outlet pipe is connected to the second cavity; the other end of the first liquid outlet pipe is connected to the top of the first cavity through a reflux pipe;

[0010] The reboiler has a third cavity, and the other end of the liquid inlet pipe is connected to the bottom end of the third cavity; the end of the reboiler is connected to the bottom end of the first cavity through the air inlet pipe;

[0011] A plurality of tower plates are fixedly connected to the inner wall of the tower body.

[0012] Preferably, a plurality of the tower plates are arranged between the reflux pipe and the air inlet pipe, and a plurality of sieve holes are formed on the plurality of the tower plates.

[0013] Preferably, a downcomer is fixedly disposed at the bottom end of one side of the tower plate.

[0014] More preferably, overflow weirs are fixedly connected to both sides of the top of the tower plate, and the overflow weirs are arranged on the inner side of the adjacent downcomer.

[0015] Preferably, two adjacent tower plates are arranged symmetrically about the tower body axis.

[0016] More preferably, there is a gap between the downcomer and the adjacent overflow weir.

[0017] Preferably, activated carbon is fixedly disposed on the inner wall of the top end of the tower body, and the activated carbon is fixedly connected to the first end of the air outlet pipe.

[0018] Preferably, a partition is fixedly provided on the inner wall of the condenser, and a plurality of third through holes are opened on the partition.

[0019] More preferably, a heat exchange tube is fixedly disposed on the inner wall of the condenser, and a first end of the heat exchange tube passes through the partition.

[0020] Preferably, a second liquid outlet pipe is fixedly provided at the bottom end of the reboiler, and the second liquid outlet pipe is communicated with the third cavity.

[0021] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0022] The distillation tower of the utility model is provided with activated carbon, so that water vapor, carbon dioxide and other gases in the tower body are absorbed to prevent them from entering the condenser and causing blockage of the heat exchange tube; the utility model is also provided with a partition, and the partition is evenly perforated to evenly distribute the gas on the surface of the heat exchange tube, thereby removing surface moisture, carbon dioxide, acetylene and hydrocarbons. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a basic structural diagram of a distillation tower in one embodiment of the utility model;

[0024] Figure 2 A cross-sectional view of a distillation tower in one embodiment of the utility model;

[0025] Reference numerals in the figures include:

[0026] 1. Tower body; 11. Feed pipe; 12. Air inlet pipe; 13. Air outlet pipe; 14. Tower plate; 141. Downcomer; 142. Overflow weir; 15. Activated carbon; 2. Condenser; 21. Heat exchange tube; 22. Partition; 23. First liquid outlet pipe; 24. Reflux pipe; 3. Reboiler; 31. Liquid inlet pipe; 32. Second liquid outlet pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] Example

[0031] like Figure 1-2 As shown, this embodiment provides an anti-clogging distillation tower, comprising: a tower body 1, a condenser 2 connected to the top pipeline of the tower body 1, and a reboiler 3 connected to the bottom pipeline of the tower body 1; wherein,

[0032] The tower body 1 has a first cavity; a feed pipe 11 is fixedly arranged on the side wall of the tower body 1, and the feed pipe 11 is connected to the first cavity; an air outlet pipe 13 is fixedly arranged at the top of the tower body 1, and one end of the air outlet pipe 13 is connected to the first cavity; a liquid inlet pipe 31 is fixedly arranged at the bottom of the tower body 1, and one end of the liquid inlet pipe 31 is connected to the first cavity; activated carbon 15 is fixedly arranged on the inner wall of the top of the tower body 1, and the activated carbon 15 is fixedly connected to the first end of the air outlet pipe 13;

[0033] The condenser 2 has a second cavity, and the other end of the air outlet pipe 13 is connected to the top of the second cavity; the bottom end of the condenser 2 is fixedly provided with a first liquid outlet pipe 23, and one end of the first liquid outlet pipe 23 is connected to the second cavity; the other end of the first liquid outlet pipe 23 is connected to the top of the first cavity through a reflux pipe 24; the inner wall of the condenser 2 is fixedly provided with a partition 22, and a plurality of third through holes are opened on the partition 22; the inner wall of the condenser 2 is also fixedly provided with a heat exchange tube 21, and the first end of the heat exchange tube 21 passes through the partition 22;

[0034] The reboiler 3 has a third cavity, and the other end of the liquid inlet pipe 31 is connected to the bottom end of the third cavity; the end of the reboiler 3 is connected to the bottom end of the first cavity through the air inlet pipe; the bottom end of the reboiler 3 is fixedly provided with a second liquid outlet pipe 32, and the second liquid outlet pipe 32 is connected to the third cavity;

[0035] A plurality of tower plates 14 are fixedly connected to the inner wall of the tower body 1, and a plurality of the tower plates 14 are arranged between the reflux pipe 24 and the air inlet pipe 12, and a plurality of sieve holes are opened on the tower plates 14; a downcomer 141 is fixedly arranged at the bottom end of one side of the tower plate 14; an overflow weir 142 is fixedly arranged at the middle of the top end of the tower plate 14, and the overflow weir 142 is arranged on the inner side of the adjacent downcomer 141; two adjacent tower plates 14 are arranged symmetrically about the axis of the tower body 1; and there is a gap between the downcomer 141 and the adjacent overflow weir 142.

[0036] During use, the operator passes the steam in the reboiler 3 into the bottom end of the tower body 1 from the air inlet pipe 12, and then adds material through the feed pipe 11. The material flows into the bottom end of the tower body 1 through the tower plate 14 and the downcomer 141. The overflow weir 142 ensures that a certain amount of material remains on the tower plate 1. The steam flows from the sieve holes of the tower plate 14 from bottom to top into the top of the tower body 1. The steam is purified and absorbed by the activated carbon 15 and flows into the condenser 2 from the air outlet pipe 13. The steam is condensed through the partition 22 and the heat exchange tube 21 and flows out from the first liquid outlet pipe 23, a part of which flows into the tower body 1 from the reflux pipe 24, and the reflux liquid and the material flow into the reboiler 3 through the liquid inlet pipe 31. The reboiler 3 evaporates the liquid and provides steam for the tower body 1 through the air inlet pipe 12, and the rest of the liquid flows out from the second liquid outlet pipe 32.

[0037] In summary, the distillation tower of the utility model is provided with activated carbon so that water vapor, carbon dioxide and other gases in the tower body are absorbed to prevent them from entering the condenser and causing blockage of the heat exchange tubes; the utility model is also provided with a partition, which is evenly perforated to evenly distribute the gas on the surface of the heat exchanger, thereby removing surface moisture, carbon dioxide, acetylene and hydrocarbons.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A distillation tower with anti-clogging, characterized in that: include: A tower body (1), a condenser (2) connected to a top pipe of the tower body (1), and a reboiler (3) connected to a bottom pipe of the tower body (1); wherein: The tower body (1) comprises a first cavity; a feed pipe (11) is fixedly arranged on a side wall of the tower body (1), and the feed pipe (11) is communicated with the first cavity; an air outlet pipe (13) is fixedly arranged at the top end of the tower body (1), and one end of the air outlet pipe (13) is communicated with the first cavity; a liquid inlet pipe (31) is fixedly arranged at the bottom end of the tower body (1), and one end of the liquid inlet pipe (31) is communicated with the first cavity; The condenser (2) has a second cavity, and the other end of the gas outlet pipe (13) is connected to the top of the second cavity; a first liquid outlet pipe (23) is fixedly provided at the bottom end of the condenser (2), and one end of the first liquid outlet pipe (23) is connected to the second cavity; the other end of the first liquid outlet pipe (23) is connected to the top of the first cavity through a reflux pipe (24); The reboiler (3) has a third cavity, and the other end of the liquid inlet pipe (31) is connected to the bottom end of the third cavity; the end of the reboiler (3) is connected to the bottom end of the first cavity through the air inlet pipe; A plurality of tower plates (14) are fixedly connected to the inner wall of the tower body (1); The inner wall of the top end of the tower body (1) is fixedly provided with activated carbon (15), and the activated carbon (15) is fixedly connected to the first end of the gas outlet pipe (13).

2. The distillation tower according to claim 1, characterized in that A plurality of the tower plates (14) are arranged between the reflux pipe (24) and the air inlet pipe (12), and a plurality of sieve holes are provided on the plurality of the tower plates (14).

3. The distillation tower according to claim 1, characterized in that A downcomer (141) is fixedly disposed at the bottom end of one side of the tower plate (14).

4. The distillation tower according to claim 3, characterized in that An overflow weir (142) is fixedly arranged at the middle of the top end of the tower plate (14), and the overflow weir (142) is arranged on the inner side of the adjacent downcomer (141).

5. The distillation tower according to claim 1, characterized in that Two adjacent tower plates (14) are arranged symmetrically about the tower body (1) axis.

6. The distillation tower according to claim 4, characterized in that There is a gap between the downcomer (141) and the adjacent overflow weir (142).

7. The distillation tower according to claim 1, characterized in that A partition plate (22) is fixedly arranged on the inner wall of the condenser (2), and a plurality of third through holes are opened on the partition plate (22).

8. The distillation tower according to claim 7, characterized in that A heat exchange tube (21) is also fixedly disposed on the inner wall of the condenser (2), and a first end of the heat exchange tube (21) passes through the partition (22).

9. The distillation tower according to claim 1, characterized in that A second liquid outlet pipe (32) is fixedly provided at the bottom end of the reboiler (3), and the second liquid outlet pipe (32) is communicated with the third cavity.

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