Alkali liquor absorption tower

Abstract

The utility model discloses an alkali liquor absorption tower, and belongs to the technical field of chemical equipment. Comprising a tower body, the tower body comprises a tower interior and a tower exterior, and a spraying device comprises a spraying head and a liquid spraying pipe which are detachably connected; and a liquid inlet pipeline is arranged at the bottom in the tower, penetrates through the tower body from inside to outside and is connected with an external alkali liquor tank for supplying alkali liquor. Alkali liquor is introduced from the bottom in the tower through the liquid inlet pipeline, liquid at the bottom of the whole tower is stirred through liquid impact force of flowing alkali liquor, a running water system is formed, precipitates are not prone to gathering, and a blow-off pipeline is not blocked in the discharging process. Therefore, the sediments can be prevented from being accumulated, deposited and solidified, and the sediments are prevented from blocking the blow-off pipeline for blow-off operation and influencing the blow-off work of the alkali liquor absorption tower. The problem that the sewage discharging pipeline at the sewage discharging position is often blocked due to accumulation and solidification of the sediments is solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically an alkali absorption tower. Background Technology

[0002] Absorption towers are devices used to perform absorption operations, and they are classified into three categories according to the gas-liquid phase contact pattern. The first category includes plate towers, bubbling absorption towers, and stirred bubbling absorption towers where the gas is dispersed in the liquid phase as bubbles. The second category includes ejectors, venturi tubes, and spray towers where the liquid is dispersed in the gas phase as droplets. The third category includes packed absorption towers and falling film absorption towers where the liquid contacts the gas phase in a film-like motion. The working principle of an alkaline absorption tower mainly includes gas-liquid contact, absorption of acidic components, separation of reaction products, liquid regeneration, and recycling.

[0003] Currently, after long-term operation, precipitates form at the bottom of alkali absorption towers. The long-term accumulation and solidification of these precipitates frequently clogs the sewage discharge pipes. Furthermore, during the neutralization reaction, incomplete acid-base reactions lead to alkali waste and low alkali utilization. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by developing an alkaline solution absorption device that solves the problem of frequent blockages in sewage discharge pipes in existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An alkaline absorption tower includes a tower body, which includes an inner tower and an outer tower. The top of the inner tower is provided with a spraying device, which includes a nozzle and a spray pipe. The nozzle and the spray pipe are detachably connected. The bottom of the inner tower is provided with an inlet pipe, which runs from the inside to the outside of the tower body and connects to an external alkaline tank that supplies alkaline solution.

[0007] Furthermore, a branch pipe is provided on the liquid inlet pipe, which is connected to the spray pipe to supply alkaline solution to the spraying device.

[0008] Furthermore, a sewage pipe is provided on one side of the bottom of the tower, penetrating the tower body, and a return pipe is provided on the other side, penetrating the tower body; the outward-extending return pipe is connected to the spray pipe.

[0009] Furthermore, a removable filter is installed on the return pipe.

[0010] Furthermore, an air inlet duct is fixedly installed on one side of the tower body, and the air inlet duct tightly runs through the inside of the tower body and extends outward.

[0011] Furthermore, the nozzle is provided with several liquid outlet holes, and the liquid outlet holes are provided with fixedly connected nozzles.

[0012] Furthermore, the nozzle has several tiny spray holes evenly distributed on it, and the nozzle is a conical nozzle.

[0013] Furthermore, a fixed chimney is provided at the top of the tower; a demister is installed in the chimney, and the demister is detachably fitted into the inner wall of the chimney.

[0014] Furthermore, a detachable support frame is provided in the inner wall of the chimney, and the support frame is installed below the demister.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention relates to an alkaline absorption tower. Alkaline solution is introduced into the tower from the bottom through an inlet pipe. The liquid impact force of the flowing alkaline solution agitates the liquid at the bottom of the tower, creating a dynamic water system that prevents precipitates from accumulating and thus avoids clogging the drain pipe during discharge. Therefore, it prevents precipitates from accumulating and solidifying, avoiding blockages in the drain pipe and ensuring smooth operation of the alkaline absorption tower. This solves the problem of frequent blockages in the drain pipe caused by precipitate accumulation and solidification.

[0017] In addition, a reflux pipeline and filter are combined. The filter separates the precipitate from the alkali solution, allowing the unneutralized alkali solution to flow back into the reflux pipeline. It is then reintroduced into the inlet pipeline, fed into the nozzle, and sprayed out from the top of the tower. This reuse of the unneutralized alkali solution avoids waste in the alkali absorption tower and improves its utilization rate. This solves the problem of alkali waste and low utilization rate caused by incomplete acid-base reaction during the neutralization process in alkali absorption towers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an alkaline absorption tower according to the present invention;

[0019] The attached figures are labeled as follows:

[0020] 1. Tower body; 2. Nozzle; 3. Spray pipe; 4. Liquid inlet pipe; 5. Branch pipe; 6. Sewage discharge pipe; 7. Return pipe; 8. Filter; 9. Air inlet pipe; 10. Chimney; 11. Demister; 12. Nozzle. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application and their accompanying drawings will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0022] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0023] For easier understanding, please refer to Figure 1 This application discloses an alkaline absorption tower, comprising a tower body 1, which includes an inner and an outer section. The tower body 1 is cylindrical or a combination of a cylinder and a frustum. A fixed chimney 10 is located at the top of the tower body 1, integrally connected to the tower body 1 or fixed by welding. An injection device is located at the top of the tower interior, comprising a nozzle 2 and a spray pipe 3. The nozzle 2 and spray pipe 3 are detachably connected. The nozzle 2 is located inside the tower, and the spray pipe 3, connected to the nozzle 2, extends outward, tightly penetrating the tower body 1. Specifically, the connection between the spray pipe 3 and the nozzle 2 is provided with interlocking threads, ensuring a tight connection. A spray pump is detachably connected to the spray pipe 3. An inlet pipe 4 is located at the bottom of the tower interior, penetrating the tower body 1 from the inside out and connecting to an external alkaline tank supplying alkaline solution. A branch pipe 5 is located on the inlet pipe 4, communicating with the spray pipe 3 to supply alkaline solution to the injection device. A pump is connected to the inlet pipe 4. The alkaline solution is transported into the bottom of the alkaline absorption tower through the inlet pipe 4 and the pump. A drain pipe 6 is provided on one side of the bottom of the tower, penetrating the tower body 1 inward, and a return pipe 7 is provided on the other side, penetrating the tower body 1 inward. The return pipe 7 extends outward and connects to the spray pipe 3. A return pump is connected to the return pipe 7.

[0024] The alkali solution requiring neutralization is pumped through spray pipe 3 into nozzle 2 using a spray pump, and then evenly sprayed from the top of the tower, ensuring smooth and sufficient contact between the alkali solution and the acidic gas for neutralization. Precipitates and unreacted alkali solution generated during the neutralization process fall to the bottom of the tower. Alkali solution is then introduced from the bottom of the tower through inlet pipe 4, where the impact force of the flowing alkali solution agitates the liquid at the bottom, creating a dynamic system that prevents precipitate buildup and avoids clogging of the drain pipe during discharge. Therefore, it prevents precipitate buildup and solidification, avoiding blockage of the drain pipe and ensuring smooth operation of the alkali absorption tower. This solves the problem of frequent blockage of the drain pipe due to precipitate buildup and solidification.

[0025] An air inlet duct 9 is fixedly installed on one side of the tower body 1. It can be welded for fixation. The air inlet duct 9 tightly penetrates the tower body 1 from the inside out. The gas requiring neutralization is transported into the tower through the air inlet duct 9 using the power of an external fan. After neutralization, the gas flows upward and is discharged through the chimney 10 at the top of the tower body 1. It should be noted that different acidic gases are neutralized using different alkaline liquids. A demister 11 is installed in the chimney 10. The demister 11 is detachably fitted into the inner wall of the chimney 10. A support frame is installed in the inner wall of the chimney 10, and the support frame is detachably and tightly connected to the inner wall of the chimney 10 using bolts. The support frame is installed below the demister 11 and is mainly used to support and lift the demister 11. Specifically, the support frame is installed first, and then the demister 11 is fitted onto the top of the support frame on the inner wall of the chimney 10. The coverage area of ​​the demister 11 is equal to the plane area of ​​the cross-section of the chimney 10, which can effectively cover the chimney 10 for demisting. After the gas passing through the chimney 10 is demisted, it is discharged to avoid affecting the ecological environment.

[0026] Based on Example 1, specifically, a removable filter 8 is installed at the reflux port of the reflux pipe 7. The partially neutralized alkali solution sprayed from the spraying device falls to the bottom of the tower. The filter 8 separates the precipitate from the alkali solution, allowing the unneutralized alkali solution to flow back into the reflux pipe 7 from the reflux port. The reflux pump then pumps the alkali solution from the reflux pipe 7 back into the spray pipe 3, and then into the nozzle 2, where it is sprayed out from the top of the tower. This allows for the reuse of the unneutralized alkali solution, preventing waste in the alkali absorption tower and improving its utilization rate. This solves the problem of alkali waste and low utilization rate caused by incomplete acid-base reaction during the neutralization process in the alkali absorption tower.

[0027] In one embodiment, the nozzle 2 has several liquid outlet holes, each of which is fixedly connected to a nozzle 12, which can be fixedly connected by welding. The nozzle 12 has several fine spray holes evenly distributed on it, and the nozzle 12 is a conical nozzle. Through the fine spray holes on the nozzle 12, the alkali solution can be sprayed out finely, enabling it to fully neutralize the acidic gas in the tower. Furthermore, the conical nozzle disperses the alkali solution in all directions while spraying, expanding the spray range and area, allowing the alkali solution to better contact the acidic gas and undergo a neutralization reaction, thereby improving the overall working efficiency of the alkali absorption tower.

[0028] It should be noted that control valves are installed on the spray pipe 3, liquid inlet pipe 4, branch pipe 5, sewage pipe 6, return pipe 7, air inlet pipe 9, etc. Appropriate valves are installed at the locations where on / off control is required to control the opening and closing of the pipes, flow rate, etc.

[0029] The working principle of this invention is to introduce alkaline solution from the bottom of the tower through the inlet pipe 4. The liquid impact force of the flowing alkaline solution agitates the liquid at the bottom of the tower, forming a dynamic water system, enhancing liquid fluidity, and preventing precipitates from accumulating and clogging the drain pipe 6 during discharge. Therefore, it prevents precipitates from accumulating and solidifying, avoiding blockage of the drain pipe 6 during sewage discharge operations and ensuring smooth operation of the alkaline absorption tower. This solves the problem of frequent blockage of the drain pipe due to precipitate accumulation and solidification.

[0030] Additionally, a reflux pipe 7 and a filter 8 are combined. The filter 8 separates the precipitate from the alkali solution, allowing the unneutralized alkali solution to flow back into the reflux pipe 7, then back into the spray pipe 3, and finally into the spray nozzle 2, where it is sprayed out from the top of the tower. This reuses the unneutralized alkali solution, preventing waste due to unreacted alkali in the absorption tower and improving its utilization rate. This solves the problem of alkali waste and low utilization rate caused by incomplete acid-base reaction during the neutralization process in alkali absorption towers.

[0031] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any changes and modifications made by those skilled in the art to the above embodiments without departing from the spirit and scope of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. An alkaline solution absorption tower, comprising a tower body (1), the tower body (1) including an inner tower and an outer tower, characterized in that, The top of the tower is equipped with a spraying device, which includes a nozzle (2) and a spray pipe (3). The nozzle (2) and the spray pipe (3) are detachably connected. The bottom of the tower is equipped with an inlet pipe (4), which runs from the inside to the outside through the tower body (1) and connects to the external alkaline tank that supplies alkaline solution.

2. The alkaline absorption tower according to claim 1, characterized in that, The liquid inlet pipe (4) is provided with a branch pipe (5), which is connected to the spray pipe (3) to supply alkaline solution to the spraying device.

3. The alkaline absorption tower according to claim 1, characterized in that, A sewage pipe (6) is provided on one side of the bottom of the tower body (1), and a return pipe (7) is provided on the other side; the outward-extending return pipe (7) is connected to the spray pipe (3).

4. An alkaline solution absorption tower according to claim 3, characterized in that, A removable filter (8) is provided on the return pipe (7).

5. An alkaline absorption tower according to claim 1, characterized in that, An air inlet pipe (9) is fixedly installed on one side of the tower body (1), and the air inlet pipe (9) tightly penetrates the tower body (1) from the inside and extends outward.

6. An alkaline absorption tower according to claim 1, characterized in that, The nozzle (2) is provided with several liquid outlet holes, and the liquid outlet holes are provided with fixedly connected nozzles (12).

7. An alkaline absorption tower according to claim 6, characterized in that, The nozzle (12) has several small spray holes evenly distributed on it, and the nozzle (12) is a conical nozzle.

8. An alkaline absorption tower according to claim 1, characterized in that, The top of the tower body (1) is provided with a fixed chimney (10); a demister (11) is provided in the chimney (10), and the demister (11) is detachably sleeved in the inner wall of the chimney (10).

9. An alkaline solution absorption tower according to claim 8, characterized in that, The inner wall of the chimney (10) is provided with a detachable support frame, which is installed below the demister (11).

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