High-concentration CO2 desulfurization device

Abstract

The invention belongs to the technical field of high-concentration CO2 desulfurization, and particularly relates to a high-concentration CO2 desulfurization device which comprises a working box, a plurality of spraying assemblies are arranged on the upper side of the working box from top to bottom, each spraying assembly comprises a rectangular pipe connected with the inner wall of the working box, and a plurality of spraying pipes are arranged on the middle side of each rectangular pipe in a communicating mode. A distribution frame is assembled on the middle side of the working box in a left-right sliding mode, an air supply pipe is arranged on the lower side of the distribution frame, one end of the air supply pipe extends out of the working box, the distribution frame is located on the lower sides of the spraying assemblies, and a cavity is formed in the distribution frame; according to the present invention, the multi-stage spraying of the desulfurization agent in the vertical direction is achieved through the multi-layer rectangular pipe and the spraying assembly arranged in the working box from top to bottom, such that the desulfurization agent is completely contacted with the rising gas, the reaction time is prolonged, and the sulfur absorption efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of high-concentration CO2 desulfurization technology, specifically relating to a high-concentration CO2 desulfurization device. Background Technology

[0002] As one of the main raw materials for urea production, the quality of carbon dioxide has a significant impact on the urea production process and equipment. Therefore, there are clear requirements for the content of various harmful media in carbon dioxide gas. In the actual production process of urea, carbon dioxide contains a small amount of sulfur-containing gas, which can easily cause corrosion to the carbon dioxide compressor. In severe cases, it can render the carbon dioxide compressor unusable, thereby hindering production. Therefore, a carbon dioxide desulfurization tower is needed to desulfurize the carbon dioxide gas. However, in current desulfurization towers, a desulfurizing agent spraying component is installed on the upper side inside the tower. Carbon dioxide is injected into the desulfurization tower from the lower side. As the gas rises, the desulfurizing agent moves downwards and comes into contact with the gas to perform desulfurization. However, the contact efficiency between carbon dioxide and desulfurizing agent is not high at present. Some carbon dioxide will be discharged directly from the top of the desulfurization tower without coming into contact with the desulfurizing agent, which will result in low desulfurization efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a high-concentration CO2 desulfurization device to solve the problems existing in the background art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A high-concentration CO2 desulfurization device includes a working chamber. Several spraying components are arranged from top to bottom on the upper side of the working chamber. Each spraying component includes a rectangular tube connected to the inner wall of the working chamber. Several spraying pipes are connected to the middle of the rectangular tube. Several nozzles are provided on the lower side of each spraying pipe. The rectangular tubes of the spraying components are connected to a feeding component. A distribution frame is slidably mounted on the middle side of the working chamber. An air supply pipe is provided on the lower side of the distribution frame, with one end extending out of the working chamber. The distribution frame is located below the spraying components and has a cavity inside. Several air outlet pipes communicating with the cavity are provided on the upper side of the distribution frame.

[0005] The feeding assembly includes a liquid storage tank located outside the working box, a feeding pipe on the upper side of the liquid storage tank, a plurality of connecting pipes corresponding one-to-one with a plurality of rectangular tubes, and a pump body assembled on the feeding pipe.

[0006] A screw is horizontally arranged inside the working box, and a threaded block is threadedly connected to the screw. The threaded block is connected to the distribution frame, and a motor connected to the screw drive is provided on the outside of the working box.

[0007] The work box is also provided with a horizontal limit rod, and the limit rod is slidably fitted with a limit block, which is connected to the distribution frame.

[0008] The front side of the work box is provided with a through groove, which is located below the distribution frame.

[0009] A filter frame is slidably mounted inside the through groove, and a handle is provided on the outside of the filter frame.

[0010] The inner walls on both the left and right sides of the work box are equipped with support strips located outside the filter frame.

[0011] The upper side of the working box is provided with a rectangular collection hopper, and the upper side of the rectangular collection hopper is provided with an exhaust pipe.

[0012] Compared with the prior art, the present invention has the following technical advantages: 1. The desulfurizing agent is sprayed in multiple stages vertically through a multi-layered rectangular tube and spraying assembly arranged from top to bottom inside the working chamber. This design ensures full contact between the desulfurizing agent and the rising gas, prolonging the reaction time and improving sulfur absorption efficiency.

[0013] 2. Each layer of spray pipe is equipped with multiple nozzles to form a three-dimensional spray network, ensuring that there are no dead corners when the gas passes through, and avoiding the "penetration" phenomenon caused by local low concentration of desulfurizing agent.

[0014] 3. The distribution frame achieves horizontal reciprocating sliding through a screw-threaded block transmission mechanism, driving the outlet pipe to swing left and right to spray gas. This dynamic gas supply method causes CO2 gas to be distributed in a diffuse manner within the working chamber, rather than flowing along a fixed path, significantly increasing the contact area between the gas and the desulfurizing agent.

[0015] 4. The feeding assembly adopts a structure of storage tank + pump body + feeding pipe + connecting pipe to achieve centralized storage and precise distribution of desulfurizing agent. The pump body provides stable pressure to ensure uniform flow of each spraying component and avoid uneven distribution of desulfurizing agent due to pressure fluctuations.

[0016] 5. A trough and filter frame are installed at the bottom of the working chamber. Solid impurities generated during the desulfurization process (such as sulfur particles and catalyst residue) will naturally settle and be intercepted by the filter frame. Workers can quickly pull out the filter frame by handle for cleaning, avoiding the accumulation of impurities that may affect desulfurization efficiency or clog the pipeline. Attached Figure Description

[0017] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3This is a schematic diagram of the assembly structure of the rectangular frame and the spray pipe of the present invention; Figure 4 This is a schematic diagram of the allocation frame of the present invention; Figure 5 This is a cross-sectional structural diagram of the allocation frame of the present invention.

[0019] The symbols for the main components are explained below: Working box 1, rectangular tube 11, spraying pipe 12, nozzle 13, distribution frame 14, air supply pipe 141, cavity 15, air outlet pipe 16, liquid storage tank 2, feeding pipe 21, connecting pipe 22, pump body 23, screw 24, threaded block 25, motor 26, limit rod 27, limit block 28, through groove 3, filter frame 31, handle 32, support bar 33, rectangular collection hopper 34, exhaust pipe 35. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-5 As shown, a high-concentration CO2 desulfurization device of the present invention includes a working box 1. The upper side of the working box 1 is provided with a plurality of spraying components from top to bottom. Each spraying component includes a rectangular tube 11 connected to the inner wall of the working box 1. A plurality of spraying pipes 12 are provided and connected in the middle of the rectangular tube 11. A plurality of nozzles 13 are provided on the lower side of each of the plurality of spraying pipes 12. The rectangular tubes 11 of the plurality of spraying components are connected to a feeding component. A distribution frame 14 is slidably mounted on the middle side of the working box 1. An air supply pipe 141 is provided on the lower side of the distribution frame 14. One end of the air supply pipe 141 extends out of the working box 1. The distribution frame 14 is located below the plurality of spraying components. A cavity 15 is provided inside the distribution frame 14. A plurality of air outlet pipes 16 connected to the cavity 15 are provided on the upper side of the distribution frame 14.

[0022] When carbon dioxide needs to be desulfurized, the staff can inject carbon dioxide into the cavity 15 of the distribution frame 14 through the gas supply pipe 141, and inject it into the working box 1 through several gas outlet pipes 16 on the upper side. At the same time, the feeding component starts to work, injecting desulfurizing agent into several rectangular pipes 11. After the desulfurizing agent is injected into the rectangular pipes 11, the desulfurizing agent in the rectangular pipes 11 is injected into the spray pipe 12. Then, the desulfurizing agent is sprayed downward through several nozzles 13 on the lower side of the spray pipe 12. In this way, the desulfurizing agent can be sprayed onto the upward-drifting carbon dioxide to desulfurize it. The design of the multi-layer rectangular tube 11 allows for multi-layer spraying of desulfurizing agent, which can improve the uniformity of desulfurizing agent spraying and increase the contact efficiency with upward-floating carbon dioxide. This multiple contact with carbon dioxide can improve the contact efficiency with carbon dioxide and improve the desulfurization effect. At the same time, the distribution box 14 can slide left and right in the working box 1. Therefore, the position of the gas swings left and right as it is sprayed out from several gas outlet pipes 16, which can disperse carbon dioxide into the working box 1, further improve the contact efficiency between carbon dioxide and desulfurizing agent, and improve the desulfurization effect of carbon dioxide.

[0023] The feeding assembly includes a liquid storage tank 2 located outside the working box 1, a feeding pipe 21 on the upper side of the liquid storage tank 2, a plurality of connecting pipes 22 corresponding one-to-one with a plurality of rectangular pipes 11, and a pump body 23 assembled on the feeding pipe 21.

[0024] Workers inject desulfurizing agent into the storage tank 2. When it is necessary to spray desulfurizing agent, the pump body 23 is started to work, and the desulfurizing agent is drawn into the feed pipe 21. Then, through several connecting pipes 22, the desulfurizing agent is injected into the rectangular pipe 11.

[0025] A screw 24 is horizontally arranged inside the working box 1. The screw 24 is threadedly connected to a threaded block 25. The threaded block 25 is connected to the distribution frame 14. A motor 26 that is driven by the screw 24 is provided on the outside of the working box 1.

[0026] Since the screw 24 is threadedly connected to the threaded block 25, when the screw 24 rotates in two directions, it can cause the threaded block 25 to swing left and right. Since the threaded block 25 is connected to the distribution frame 14, when the threaded block 25 rotates in two directions, the distribution frame 14 can slide left and right.

[0027] The work box 1 is also provided with a horizontal limit rod 27. The limit rod 27 is slidably assembled with a limit block 28, which is connected to the distribution frame 14.

[0028] When the distribution frame 14 slides left and right, since the distribution frame 14 is connected to the limiting block 28, the distribution frame 14 can drive the limiting block 28 to slide left and right relative to the outer surface of the limiting rod 27. The sliding of the limiting block 28 and the outer surface of the limiting rod 27 can limit the distribution frame 14 and ensure the stability of the distribution frame 14 sliding left and right.

[0029] The front side of the working box 1 is provided with a through groove 3, which is located below the distribution frame 14. A filter frame 31 is slidably assembled in the through groove 3, and a handle 32 is provided on the outside of the filter frame 31.

[0030] The filter frame 31 is designed to intercept and collect impurities generated during the desulfurization process as they fall downwards, ensuring that the impurities fall into the filter frame 31. When needed, the staff can remove the filter frame 31 from the channel 3 using the handle 32, and collect the impurities collected in the filter frame 31.

[0031] The inner walls on both the left and right sides of the working chamber 1 are provided with support bars 33 located on the outside of the filter frame 31. The design of the support bars 33 can effectively support the part of the filter frame 31 inside the working chamber 1.

[0032] A rectangular hopper 34 is provided on the upper side of the working box 1, and an exhaust pipe 35 is located on the upper side of the rectangular hopper 34. The desulfurized gas floats upward and is guided through the rectangular hopper 34 into the exhaust pipe 35, and then discharged from the working box 1 through the exhaust pipe 35.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A high-concentration CO2 desulfurization device, characterized in that: The device includes a working box, on the upper side of which are arranged several spraying components from top to bottom. Each spraying component includes a rectangular tube connected to the inner wall of the working box. Several spraying pipes are arranged in the middle of the rectangular tube. Several nozzles are arranged on the lower side of each spraying pipe. The rectangular tubes of the spraying components are connected to a feeding component. A distribution frame is slidably mounted on the middle side of the working box. An air supply pipe is arranged on the lower side of the distribution frame. One end of the air supply pipe extends out of the working box. The distribution frame is located below the spraying components. A cavity is provided inside the distribution frame. Several air outlet pipes communicating with the cavity are arranged on the upper side of the distribution frame.

2. The high-concentration CO2 desulfurization device according to claim 1, characterized in that: The feeding assembly includes a liquid storage tank located outside the working box, a feeding pipe on the upper side of the liquid storage tank, a plurality of connecting pipes corresponding one-to-one with a plurality of rectangular tubes, and a pump body assembled on the feeding pipe.

3. The high-concentration CO2 desulfurization device according to claim 1, characterized in that: A screw is horizontally arranged inside the working box, and a threaded block is threadedly connected to the screw. The threaded block is connected to the distribution frame, and a motor connected to the screw drive is provided on the outside of the working box.

4. A high-concentration CO2 desulfurization device according to claim 3, characterized in that: The work box is also provided with a horizontal limit rod, and the limit rod is slidably fitted with a limit block, which is connected to the distribution frame.

5. A high-concentration CO2 desulfurization device according to claim 1, characterized in that: The front side of the work box is provided with a through groove, which is located below the distribution frame.

6. A high-concentration CO2 desulfurization device according to claim 1, characterized in that: A filter frame is slidably assembled inside the through groove. A handle is provided on the outside of the filter frame. Support bars are provided on the inner walls of both the left and right sides of the work box, located on the outside of the filter frame.

7. A high-concentration CO2 desulfurization device according to claim 1, characterized in that: The upper side of the working box is provided with a rectangular collection hopper, and the upper side of the rectangular collection hopper is provided with an exhaust pipe.

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