Absorption tower structure and flue gas capture system having the same

Abstract

The application provides an absorption tower structure and a flue gas trapping system with the same, and the absorption tower structure comprises: a tower body, the tower body comprises multiple reaction tower sections, the multiple reaction tower sections are sequentially connected along a broken line type track or a wave type track, and the bottom of at least one of the multiple reaction tower sections is provided with an air inlet channel; a spraying assembly, at least part of the spraying assembly is arranged at the top of each reaction tower section, and the spraying assembly is used for spraying reaction liquid into each reaction tower section; wherein, the tower body further comprises: a supporting tower section, which is arranged at the bottom end of the reaction tower section and communicates with the reaction tower section, and the supporting tower section is used for supporting the reaction tower section. The application solves the problem that the existing absorption tower structure is complex to support and inconvenient to maintain due to the high height.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of absorption tower structure design, in particular to an absorption tower structure and a flue gas capture system with the same. BACKGROUND

[0002] In industrial flue gas treatment, tower is a common equipment for realizing gas-liquid contact and mass transfer process, which is divided into three categories according to the gas-liquid contact form. The first category is plate tower, bubble absorption tower and stirred bubble absorption tower in which gas is dispersed in liquid phase in the form of bubbles. The second category is ejector and spray tower in which liquid is dispersed in gas phase in the form of droplets. The third category is packed absorption tower and falling film absorption tower in which liquid moves in the form of film and contacts with gas phase. The flow mode of gas-liquid two phases in the tower can be countercurrent or cocurrent. Countercurrent operation is usually adopted, the absorbent is added from the top and flows downward, contacts with the gas flowing upward, the liquid in which the absorbate is absorbed is discharged from the bottom, and the purified gas is discharged from the top. Therefore, the sufficient mixing of flue gas and liquid in the absorption tower can promote the filtration of flue gas and improve the purification effect of the absorption tower.

[0003] The existing absorption tower is mostly columnar structure, which is high in height and large in size, and usually needs a complex support structure to support the tower body to ensure the stability of the absorption tower, and the maintenance of the absorption tower is extremely inconvenient. SUMMARY

[0004] The main purpose of the present application is to provide an absorption tower structure and a flue gas capture system with the same, so as to solve the problem of complex support and inconvenient maintenance of the absorption tower structure in the prior art due to high height.

[0005] In order to achieve the above purpose, according to one aspect of the present application, an absorption tower structure is provided, which comprises: a tower body, the tower body comprising a plurality of reaction tower segments, the plurality of reaction tower segments being connected in sequence along a broken line type trajectory or a wave type trajectory, and the bottom of at least one of the plurality of reaction tower segments being provided with an air inlet channel; a spraying assembly, at least part of the spraying assembly being arranged at the top of each reaction tower segment, and the spraying assembly being used for spraying reaction liquid into each reaction tower segment; wherein the tower body further comprises: a support tower segment arranged at the bottom end of the reaction tower segment and communicating with the reaction tower segment, and the support tower segment being used for supporting the reaction tower segment.

[0006] Further, the absorption tower structure further comprises: a converging cavity arranged in the support tower segment and used for converging the waste liquid after the spraying reaction liquid reacts with the gas.

[0007] Further, the support tower segment is a plurality of support tower segments, the plurality of support tower segments comprising an intermediate support tower segment and an end support tower segment; wherein the bottom of each two adjacent reaction tower segments is connected by the intermediate support tower segment, and the end support tower segment is arranged at the end of the tower body.

[0008] Further, the bottom of each reaction tower section is respectively provided with an air inlet channel, and the absorption tower structure further comprises: a flow guide plate arranged on the inner side wall of the reaction tower section and connected below the air outlet of the air inlet channel, and the flow guide plate is arranged in a direction close to the support tower section.

[0009] Further, the tower body further comprises: a connecting tower section arranged at the top of the reaction tower section, and two adjacent reaction tower sections are connected through the connecting tower section, and at least part of the spray assembly is arranged in the connecting tower section; the connecting tower section extends in a horizontal direction, or the connecting tower section extends along an arc-shaped track.

[0010] Further, the spray assembly comprises: a liquid supply pipe arranged in the connecting tower section, and the liquid supply pipe is arranged along the extension direction of the connecting tower section; the middle part of the liquid supply pipe protrudes towards the bottom wall surface of the connecting tower section; and a plurality of nozzles are arranged on the liquid supply pipe and are arranged at intervals along the extension direction of the liquid supply pipe.

[0011] Further, the spray assembly comprises: a first spray group arranged at the top of the reaction tower section, and the first spray group sprays the reaction liquid from the top of the reaction tower section into the two adjacent reaction tower sections; and a second spray group arranged on the inner side wall of the reaction tower section, and the second spray group sprays the reaction liquid from the inner side wall of the reaction tower section into the reaction tower section.

[0012] Further, the second spray group is a plurality of groups, and the plurality of groups of the second spray group are arranged in one-to-one correspondence with the plurality of reaction tower sections.

[0013] Further, the maximum height of the tower body is 2m to 3m.

[0014] According to another aspect of the present application, a flue gas capture system is provided, comprising an absorption tower structure, which is the above-mentioned absorption tower structure.

[0015] By applying the technical scheme of the present application, the absorption tower structure comprises a tower body and a spray assembly, the tower body comprises a plurality of reaction tower sections, the plurality of reaction tower sections are connected in sequence along a zigzag-shaped track or a wave-shaped track, and the bottom of at least one of the plurality of reaction tower sections is provided with an air inlet channel; at least part of the spray assembly is arranged at the top of each reaction tower section, and is used for spraying reaction liquid into each reaction tower section; and the tower body further comprises: a support tower section arranged at the bottom end of the reaction tower section and in communication with the reaction tower section, and the support tower section is used for supporting the reaction tower section. By arranging the plurality of reaction tower sections and connecting the plurality of reaction tower sections in sequence along the zigzag-shaped track or the wave-shaped track, the height of the tower body is reduced and the length of the tower body is increased on the basis of meeting the requirement of having sufficient reaction space in the tower body, in addition, by arranging the support tower section, the support tower section not only plays a supporting role for the reaction tower section, but also can collect reaction waste liquid in the reaction tower section, so that the tower body does not need to be supported by a complex support structure, and it is also convenient for operators to overhaul and maintain the absorption tower. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the absorption tower structure according to the present invention is shown;

[0018] Figure 2 A schematic diagram of the installation of the spray assembly of the absorption tower structure according to the present invention is shown;

[0019] Figure 3 A schematic diagram of another embodiment of the absorption tower structure according to the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 1. Tower body; 10. Reaction tower section; 101. Air inlet channel; 2. Spray assembly; 11. Support tower section; 110. Intermediate support tower section; 111. End support tower section; 3. Manifold; 12. Connecting tower section; 20. Liquid supply pipe; 21. Spray head; 22. First spray group; 23. Second spray group; 4. Guide plate; 5. Air outlet channel. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] As mentioned in the background, the absorption tower body in the prior art is mostly high in height, long in cantilever, needs complex support structure, and is inconvenient for operators to overhaul and maintain. Therefore, in order to solve the above technical problems, the present application provides an absorption tower structure, the tower body 1 comprises a plurality of reaction tower sections 10, the plurality of reaction tower sections 10 are connected in sequence along a broken line trajectory or a wave trajectory, so that on the basis of meeting the requirement of having sufficient reaction space in the absorption tower, the length of the tower body 1 is increased in the transverse direction of the tower body 1, so as to reduce the height of the tower body 1, so that each reaction tower section 10 is arranged at a predetermined angle, the bottom of at least one reaction tower section 10 in the plurality of reaction tower sections 10 is provided with an air inlet channel 101, flue gas containing carbon dioxide is introduced into each reaction tower section 10 through the air inlet channel 101, a spraying assembly 2 is arranged at the top of the reaction tower section 10 and is in countercurrent contact with the flue gas, so that the reaction liquid sprayed by the spraying assembly 2 reacts with the carbon dioxide in the flue gas, due to the reduction of the height of each reaction tower section 10, in order to meet the requirement of flue gas discharge capacity, the flue gas is distributed in each reaction tower section 10 to react with the spraying liquid, wherein the tower body 1 further comprises a support tower section 11, the reaction tower section 10 is supported by the support tower section 11, and the support tower section 11 is arranged at the bottom end of the reaction tower section 10 and communicates with the reaction tower section 10, the waste liquid generated after the chemical reaction between the flue gas and the reaction liquid can automatically flow into the support tower section 11, so that the setting not only reduces the height of the absorption tower, does not need complex support structure, and facilitates the maintenance of the tower body 1 by the workers during the overhaul process.

[0024] Please refer to Figures 1 to 3 The present application provides an absorption tower structure, comprising: a tower body 1, the tower body 1 comprises a plurality of reaction tower sections 10, the plurality of reaction tower sections 10 are connected in sequence along a broken line trajectory or a wave trajectory, the bottom of at least one reaction tower section 10 in the plurality of reaction tower sections 10 is provided with an air inlet channel 101; a spraying assembly 2, at least part of the spraying assembly 2 is arranged at the top of each reaction tower section 10, for spraying reaction liquid into each reaction tower section 10; wherein the tower body 1 further comprises: a support tower section 11, arranged at the bottom end of the reaction tower section 10 and communicating with the reaction tower section 10, the support tower section 11 is used for supporting the reaction tower section 10.

[0025] According to the absorption tower structure provided by the application, the tower body 1 comprises a plurality of reaction tower segments 10 connected in sequence along a broken line trajectory or a wave trajectory, and the bottom of at least one of the plurality of reaction tower segments 10 is provided with an air inlet channel 101; at least part of the spray assembly 2 is arranged at the top of each reaction tower segment 10 and used for spraying reaction liquid into each reaction tower segment 10; and the tower body 1 further comprises a support tower segment 11 arranged at the bottom end of the reaction tower segment 10 and in communication with the reaction tower segment 10, which is used for supporting the reaction tower segment 10. The tower body 1 comprises a plurality of reaction tower segments 10 connected in sequence along a broken line trajectory or a wave trajectory, so that the height of the tower body 1 is reduced and the length of the tower body 1 is increased on the basis of meeting the requirement of having sufficient reaction space in the tower body 1, and in addition, the support tower segment 11 is arranged, which not only plays a supporting role for the reaction tower segment 10 but also can be used for collecting reaction waste liquid in the reaction tower segment 10, so that the tower body 1 does not need to be supported by a complex support structure and it is also convenient for an operator to overhaul and maintain the absorption tower.

[0026] Specifically, the absorption tower structure further comprises a flow collecting cavity 3 arranged in the support tower segment 11 and used for collecting waste liquid after the spray reaction liquid reacts with gas. The flow collecting cavity 3 is the inner cavity of the support tower segment 11, and after the reaction waste liquid is collected by the support tower segment 11, a drain port is arranged at the bottom of the support tower segment 11 to drain the reaction waste liquid.

[0027] In the specific implementation process, the support tower segment 11 is a plurality of support tower segments 11 comprising a middle support tower segment 110 and an end support tower segment 111; the bottom of two adjacent reaction tower segments 10 is connected by the middle support tower segment 110, and the end support tower segment 111 is arranged at the end of the tower body 1. The end support tower segment 111 plays a supporting role for the reaction tower segment 10 connected thereto, and the middle support tower segment 110 plays a connecting and supporting role for the two adjacent reaction tower segments 10; in the use process, the reaction waste liquid in the end support tower segment 111 can be directly drained from the end support tower segment 111, and the middle support tower segment 110 needs to be externally connected to a drain pipe for draining the reaction waste liquid. By arranging the middle support tower segment 110 and the end support tower segment 111, the support stability of the reaction tower segment 10 is improved, and the entire tower body 1 has a plurality of support points.

[0028] In the embodiments provided in the application, as shown in Figure 1 and Figure 2As shown, the bottom of each reaction tower section 10 is respectively provided with an air inlet channel 101, and the absorption tower structure further comprises: a flow guide plate 4 arranged on the inner side wall of the reaction tower section 10, and the flow guide plate 4 is connected below the air outlet of the air inlet channel 101, and the flow guide plate 4 is arranged in a direction close to the support tower section 11. In order to avoid that part of the flue gas enters the support tower section 11 after the flue gas enters the reaction tower section 10 from the air inlet channel 101, the flow guide plate 4 is arranged on the inner side wall of the reaction tower section 10 to block the flue gas, and the flue gas can change the flow trajectory after contacting the plate surface of the flow guide plate 4. In order to avoid that the flow guide plate 4 blocks the reaction waste liquid, the flow guide plate 4 is arranged in a direction close to the support tower section 11, so as to guide the flow of the reaction waste liquid, and the reaction waste liquid can flow into the support tower section 11 along the flow guide plate 4.

[0029] Further, the tower body 1 further comprises: a connecting tower section 12 arranged at the top of the reaction tower section 10, and two adjacent reaction tower sections 10 are connected through the connecting tower section 12, and at least part of the spray assembly 2 is arranged in the connecting tower section 12; the connecting tower section 12 extends in the horizontal direction, or the connecting tower section 12 extends along an arc trajectory. The two adjacent reaction tower sections 10 are connected through the connecting tower section 12, and at least part of the spray assembly 2 is arranged in the connecting tower section 12, so that the spray assembly 2 can spray the flue gas in the two adjacent reaction tower sections 10 at the same time during the working process. Specifically, each connecting tower section 12 is provided with an air outlet channel 5, and the flue gas after reaction is discharged from each reaction tower section 10 through the air outlet channel 5.

[0030] In order to improve the spraying effect and make the reaction liquid fully react with the flue gas, the spray assembly 2 comprises: a liquid supply pipe 20 arranged in the connecting tower section 12, and the liquid supply pipe 20 is arranged along the extension direction of the connecting tower section 12; the middle part of the liquid supply pipe 20 protrudes towards the bottom wall of the connecting tower section 12; a spray head 21 arranged on the liquid supply pipe 20, and the spray head 21 is a plurality of, and the plurality of spray heads 21 are arranged in the extension direction of the liquid supply pipe 20. Preferably, the liquid supply pipe 20 extends along an arc trajectory, so that each spray head 21 can spray the reaction liquid at different angles into the reaction tower section 10 in a radial manner during the spraying process.

[0031] In an embodiment of the spray assembly 2 provided by the present application, as shown in Figure 2As shown, the spray assembly 2 comprises: a first spray group 22 arranged at the top of the reaction tower section 10, the first spray group 22 sprays the reaction liquid into the adjacent two reaction tower sections 10 from the top of the reaction tower section 10; and a second spray group 23 arranged on the inner side wall of the reaction tower section 10, the second spray group 23 sprays the reaction liquid into the reaction tower section 10 from the inner side wall of the reaction tower section 10. The second spray group 23 is in multiple groups, and the multiple groups of the second spray group 23 are arranged in one-to-one correspondence with the multiple reaction tower sections 10. In this way, the reaction liquid and the flue gas can fully react, and due to the inclination angle of the reaction tower section 10, this arrangement can also avoid the situation that part of the flue gas cannot contact the reaction liquid only through the first spray group 22.

[0032] In the specific implementation process, the maximum height of the tower body 1 is 2m to 3m. In this way, the height of the reaction tower is reduced, and within this range, the maintenance operation of the staff can be facilitated.

[0033] In another embodiment of the absorption tower structure provided in the present application, as shown in the figure, Figure 3 The tower body 1 extends along a wave-shaped trajectory, which makes the appearance of the tower body 1 more beautiful and avoids the situation that the flue gas appears to be blocked in the tower body 1. In the present embodiment, the tower body 1 is a cylindrical structure, and the inner diameter of the tower body 1 is 0.8m to 1.5m.

[0034] In actual use, the absorption filler is arranged in each reaction tower section 10, and the absorption filler is located in the middle part of the reaction tower section 10. The carbon dioxide in the flue gas reacts with the reaction liquid in the absorption filler. Preferably, the angle between the extension direction of each reaction tower section 10 and the horizontal support surface is 50° to 70°. Within this angle range, the flue gas in the reaction tower section 10 can fully contact the reaction liquid during the upward flow along the extension direction of the reaction tower section 10. If the angle is too small, the reaction liquid at the top cannot be sprayed to the part of the reaction tower section 10 close to the support tower section 11. If the angle is too large, the overall height of the tower body 1 will be increased under the same volume.

[0035] The present application also provides a flue gas capture system comprising the absorption tower structure, and the absorption tower structure is the absorption tower structure of the above-mentioned embodiments.

[0036] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0037] According to the application, the absorption tower structure comprises a tower body 1 and a spraying assembly 2, the tower body 1 comprises a plurality of reaction tower sections 10, the plurality of reaction tower sections 10 are sequentially connected along a broken line type trajectory or a wave type trajectory, and the bottom of at least one reaction tower section 10 of the plurality of reaction tower sections 10 is provided with an air inlet channel 101; at least part of the spraying assembly 2 is arranged at the top of each reaction tower section 10, and is used for spraying reaction liquid into each reaction tower section 10; wherein the tower body 1 further comprises a support tower section 11 arranged at the bottom end of the reaction tower section 10 and communicated with the reaction tower section 10, and the support tower section 11 is used for supporting the reaction tower section 10. The tower body 1 comprises the plurality of reaction tower sections 10, the plurality of reaction tower sections 10 are sequentially connected along the broken line type trajectory or the wave type trajectory, so that the height of the tower body 1 is reduced and the length of the tower body 1 is increased on the basis of meeting the requirement of having sufficient reaction space in the tower body 1, and in addition, the support tower section 11 is arranged, the support tower section 11 not only plays a supporting role on the reaction tower section 10, but also can collect reaction waste liquid in the reaction tower section 10 by using the support tower section 11, so that the tower body 1 is supported without a complex support structure, and the maintenance and repair of the absorption tower by the operator are also facilitated.

[0038] The above only describes the preferred embodiments of the present application and is not used to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An absorption column structure, characterized by The application relates to an absorption tower structure. The absorption tower structure comprises a tower body (1) and a spray assembly (2). The tower body (1) comprises a plurality of reaction tower segments (10) which are sequentially connected along a broken line trajectory or a wave trajectory. At least one bottom of the reaction tower segments (10) is provided with an air inlet channel (101). The spray assembly (2) is arranged at least partially on the top of each reaction tower segment (10) and is used for spraying reaction liquid into each reaction tower segment (10).

2. The absorber tower structure according to claim 1, characterized in that The tower body (1) further comprises a support tower segment (11) which is arranged at the bottom end of the reaction tower segment (10) and is in communication with the reaction tower segment (10). The support tower segment (11) is used for supporting the reaction tower segment (10).

3. The absorber tower structure according to claim 2, characterized in that The absorption tower structure further comprises a converging cavity (3) which is arranged in the support tower segment (11) and is used for converging waste liquid after the spray reaction liquid and gas react. The support tower segment (11) is a plurality of support tower segments (11) which comprise intermediate support tower segments (110) and end support tower segments (111).

4. The absorber tower structure according to claim 1, characterized in that Two adjacent reaction tower segments (10) are connected through the intermediate support tower segments (110), and the end support tower segments (111) are arranged at the end of the tower body (1). The bottom of each reaction tower segment (10) is respectively provided with an air inlet channel (101).

5. The absorber tower structure according to claim 1, wherein, The absorption tower structure further comprises a flow guide plate (4) which is arranged on the inner side wall of the reaction tower segment (10) and is connected below the air outlet of the air inlet channel (101). The flow guide plate (4) is arranged in a direction close to the support tower segment (11). The tower body (1) further comprises a connecting tower segment (12) which is arranged on the top of the reaction tower segment (10) and is used for connecting two adjacent reaction tower segments (10).

6. The absorber tower structure according to claim 5, characterized in that The spray assembly (2) is arranged in the connecting tower segment (12). The connecting tower segment (12) extends along a horizontal direction or extends along an arc trajectory. The spray assembly (2) comprises a liquid supply pipe (20) which is arranged in the connecting tower segment (12) and extends along the extension direction of the connecting tower segment (12).

7. The absorber tower structure according to claim 1, wherein The middle part of the liquid supply pipe (20) protrudes towards the bottom wall surface of the connecting tower segment (12). A plurality of spray heads (21) are arranged on the liquid supply pipe (20) and are arranged at intervals along the extension direction of the liquid supply pipe (20). The spray assembly (2) comprises a first spray group (22) which is arranged on the top of the reaction tower segment (10) and sprays reaction liquid into two adjacent reaction tower segments (10) from the top of the reaction tower segment (10). A second spray group (23) is arranged on the inner side wall of the reaction tower segment (10) and sprays reaction liquid into the reaction tower segment (10) from the inner side wall of the reaction tower segment (10).

8. The absorber tower structure according to claim 7, characterized in that The second spraying groups (23) are multiple groups, and the multiple second spraying groups (23) are arranged in one-to-one correspondence with the multiple reaction tower sections (10).

9. The absorber tower structure according to claim 1, characterized in that The maximum height of the tower body (1) is 2 m to 3 m.

10. A flue gas capture system comprising an absorber tower structure, characterised in that, The absorption tower structure is the absorption tower structure in any one of claims 1 to 9.

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