Carbon dioxide tail gas and gasification slag alkaline substance neutralization reaction device

Abstract

The utility model discloses a carbon dioxide tail gas and gasification slag alkaline substance neutralization reaction device, and relates to the technical field of neutralization reaction equipment. The gas transmission assembly is arranged in the reaction tank, the gas transmission assembly is used for transmitting carbon dioxide gas into the reaction tank, the gas transmission assembly comprises a mounting pipe and a gas transmission pipe, an anti-rotation part is arranged on the mounting pipe, a suspension part is arranged at one end of the gas transmission pipe, and the gas transmission pipe is connected with the mounting pipe through the suspension part and the anti-rotation part; a plurality of gas conveying holes are formed in the outer portion of the gas conveying pipe, and a hole sealing pipe is arranged in the gas conveying pipe. The threaded ring is rotated to drive the connecting ring to move in the direction close to the sealing cover, the connecting ring drives the double-rotation-preventing plate to move away from the suspension arm, limitation on the suspension arm is relieved, the gas conveying pipe is rotated, the suspension arm is rotated out of the supporting arm, and then the gas conveying pipe can be detached, the detaching process is easy, and consumed time is short; and the influence on the reaction efficiency due to long downtime of equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of neutralization reaction equipment, specifically to a neutralization reaction device for carbon dioxide tail gas and alkaline substances in gasification slag. Background Technology

[0002] The process of neutralizing carbon dioxide tail gas with gasification slag (alkaline substances) usually involves the alkaline substances in the slag (such as calcium hydroxide, sodium hydroxide, sodium ash, or other alkaline minerals) reacting chemically with CO2 in the tail gas to generate stable carbonates or bicarbonates. This achieves the purpose of tail gas purification and solidification and utilization of alkaline waste slag, enabling tail gas purification (reducing CO2 emissions and meeting environmental protection requirements) and waste slag resource utilization (generating carbonate precipitates (such as CaCO3), which can be used for road paving, filling materials, etc.).

[0003] A document with publication number CN207774830U discloses a calcium carbonate neutralization reaction device, belonging to the technical field of calcium carbonate production equipment. It includes a main gas pipe for conveying carbon dioxide and a branch gas pipe for injecting carbon dioxide into a calcium carbonate reaction tank. One end of the branch gas pipe is connected to the main gas pipe, and the other end extends into the interior of the calcium carbonate reaction tank. A pulse valve is installed in the middle of the branch gas pipe. The calcium carbonate neutralization reaction device provided by this utility model uses a pulse valve to control the branch gas pipe to inject carbon dioxide gas into the calcium carbonate reaction tank in separate streams. On the one hand, the carbon dioxide reacts with the residual calcium hydroxide to form calcium carbonate, reducing the calcium hydroxide content. On the other hand, the carbon dioxide reacts with water to form carbonic acid, lowering the pH value of the solution in the reaction tank. The reaction process is clean and pollution-free, and does not affect the purity of the calcium carbonate reaction products. The separate injection of carbon dioxide reduces the amount of carbon dioxide used.

[0004] The carbon dioxide gas delivery pipe is placed directly inside the alkaline solution of the gasification slag to achieve the purpose of introducing carbon dioxide into the alkaline solution for mixing. However, during the neutralization process, a certain amount of solid precipitate is formed. Over time, these solids will adhere to the gas delivery pipe and block the pipe opening and exhaust position, affecting the carbon dioxide input rate and reducing the neutralization reaction efficiency. Therefore, the gas delivery pipe needs to be cleaned regularly. However, the gas delivery pipe in the above equipment is inconvenient to disassemble, and the disassembly process before cleaning the gas delivery pipe is long, resulting in a long downtime of the equipment and affecting the reaction efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a neutralization reaction device for carbon dioxide tail gas and alkaline substances in gasification slag, which solves the problem that the gas supply pipe in the existing neutralization reaction device for carbon dioxide tail gas and alkaline substances in gasification slag is inconvenient to disassemble, and the disassembly process before cleaning the gas supply pipe is long, resulting in a long downtime of the equipment and affecting the reaction efficiency.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: This utility model includes:

[0007] reaction vessel;

[0008] A gas delivery assembly is disposed inside the reaction vessel. The gas delivery assembly is used to deliver carbon dioxide gas into the reaction vessel. The gas delivery assembly includes an installation pipe and a gas delivery pipe. An anti-rotation component is provided on the installation pipe. A suspension component is provided at one end of the gas delivery pipe. The gas delivery pipe is connected to the installation pipe through the suspension component and the anti-rotation component. Multiple gas delivery holes are opened on the outside of the gas delivery pipe.

[0009] Preferably, the gas transmission pipe is provided with a sealing pipe inside, and a floating ring seat is provided at one end of the sealing pipe.

[0010] Preferably, the outer surface of the mounting tube is provided with a threaded connection groove and multiple vertical grooves. The anti-rotation component includes a threaded ring threaded to the outside of the mounting tube and a connecting ring disposed on the outside of the mounting tube. The threaded ring and the connecting ring are rotatably connected. Multiple connecting blocks are fixed on the inner surface of the connecting ring. The multiple connecting blocks slide in the interior of the multiple vertical grooves respectively. Multiple double anti-rotation plates are fixed below the connecting ring.

[0011] Preferably, the suspension component includes multiple support arms fixed to the outer surface of the mounting pipe and multiple suspension arms fixed to one end of the gas transmission pipe.

[0012] Preferably, the reaction vessel is provided with a sealing assembly, which includes two electric push rods fixed to the outside of the reaction vessel and a cover set on the top of the reaction vessel. One end of each of the two electric push rods is fixed to the bottom of the cover, and the mounting tube rotates inside the cover.

[0013] Preferably, a motor is fixed above the cover via a connecting frame, a small gear is fixed to one end of the motor's output shaft, and a large gear is fixed to the outside of the mounting tube, with the small gear meshing with the large gear.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By rotating the threaded ring, the connecting ring is moved closer to the cover. The connecting ring moves the double anti-rotation plate away from the suspension arm, releasing the limit on the suspension arm. The gas pipe is then rotated so that the suspension arm rotates out of the support arm, and the gas pipe can be removed. The disassembly process is easy and quick, reducing the impact of long equipment downtime on reaction efficiency.

[0016] 2. The buoyancy of the floating ring seat drives the sealing tube to float when the alkaline substance solution of the gasification slag is added. After the solution is filled, the liquid level is fixed and the position of the sealing tube is also adjusted. The sealing tube blocks the gas outlet above the liquid level, preventing some carbon dioxide gas from being discharged before entering the alkaline substance solution of the gasification slag to react, thus improving the utilization rate of the reaction system. Attached Figure Description

[0017] Figure 1 This is a front view of Embodiment 1 of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram showing the disassembled gas delivery component of this utility model;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of a local structure.

[0021] The numbers in the image represent:

[0022] 1. Reaction vessel; 2. Gas delivery assembly; 21. Mounting pipe; 22. Gas delivery pipe; 23. Gas delivery port; 24. Sealing pipe; 25. Floating ring seat; 26. Threaded connection groove; 27. Vertical groove; 28. Threaded ring; 29. ​​Connecting ring; 210. Connecting block; 211. Double anti-rotation plate; 212. Support arm; 213. Suspension arm; 3. Sealing assembly; 31. Electric push rod; 32. Cover; 4. Motor;

[0023] 5. Small gear; 6. Large gear. Detailed Implementation

[0024] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0025] This embodiment provides a technical solution: a device for neutralizing carbon dioxide tail gas with alkaline substances in gasification slag, such as... Figure 1-4As shown, the system includes a reaction vessel 1 and a gas delivery assembly 2 disposed inside the reaction vessel 1. A sealing assembly 3 is disposed outside the reaction vessel 1. The sealing assembly 3 includes two electric push rods 31 fixed to the outside of the reaction vessel 1 and a cover 32 disposed on the top of the reaction vessel 1. One end of the telescopic rods of the two electric push rods 31 is fixed to the bottom of the cover 32. By telescopically extending and retracting the electric push rods 31, the distance between the cover 32 and the reaction vessel 1 is changed, thereby exposing the gas delivery assembly 2 below the cover 32 from the reaction vessel 1 for maintenance. The cover 32 is provided with an inlet pipe for introducing alkaline substance solution of gasification slag and a mounting bracket. The mounting bracket is provided with a rotary joint, which is connected to one end of the mounting pipe 21. A carbon dioxide gas inlet pipe is connected to the rotary joint. When the mounting pipe 21 rotates, the gas inlet pipe will not be affected and will not twist or entangle.

[0026] The gas delivery assembly 2 is used to deliver carbon dioxide gas to the reaction vessel 1. The gas delivery assembly 2 includes an installation pipe 21 and a gas delivery pipe 22. The installation pipe 21 rotates inside the cover 32 and is equipped with an anti-rotation component. One end of the gas delivery pipe 22 is equipped with a suspension component. The gas delivery pipe 22 is connected to the installation pipe 21 through the suspension component and the anti-rotation component, which also facilitates quick removal, cleaning or replacement of the gas delivery pipe 22 if it becomes blocked later. The gas delivery pipe 22 has multiple gas delivery holes 23 on its outside and a sealing pipe 24 inside. One end of the sealing pipe 24 is equipped with a floating ring seat 25 that can automatically float with the rise and fall of the solution level.

[0027] The outer surface of the mounting pipe 21 is provided with a threaded connection groove 26 and multiple vertical grooves 27. The anti-rotation component includes a threaded ring 28 threaded to the outside of the mounting pipe 21 and a connecting ring 29 disposed on the outside of the mounting pipe 21. The threaded ring 28 and the connecting ring 29 are rotatably connected. The connecting ring 29 is disposed below the threaded ring 28. Multiple connecting blocks 210 are fixed on the inner surface of the connecting ring 29. The multiple connecting blocks 210 slide in the interior of the multiple vertical grooves 27 respectively. Due to the sliding limit of the connecting blocks 210 and the vertical grooves 27, the connecting ring 29 can only slide vertically along the outer surface of the mounting pipe 21. Multiple double anti-rotation plates 211 are fixed below the connecting ring 29. The suspension component includes multiple support arms 212 fixed to the outer surface of the mounting pipe 21 and multiple suspension arms 213 fixed to one end of the gas transmission pipe 22.

[0028] A motor 4 is fixed above the cover 32 via a connecting frame. A small gear 5 is fixed to one end of the output shaft of the motor 4. A large gear 6 is fixed to the outside of the mounting pipe 21. The small gear 5 meshes with the large gear 6. The motor 4 drives the small gear 5 to rotate, and the small gear 5 drives the large gear 6 to rotate through the meshing teeth. This drives the mounting pipe 21 and the gas delivery pipe 22 to rotate. Multiple stirring blades are fixed to the outside of the gas delivery pipe 22. When the gas delivery pipe 22 rotates, it drives the stirring blades to stir the alkaline substance solution of the gasification slag, thereby accelerating the dissolution and neutralization reaction of the gas in the solution.

[0029] In use: Pour the alkaline substance solution of gasification slag into reaction vessel 1. When adding the alkaline substance solution of gasification slag, the floating ring seat 25 will float on the surface of the solution, thereby driving the sealing tube 24 to rise in the gas supply pipe 22. After the solution is filled, the liquid level is fixed and the position of the sealing tube 24 is also adjusted. The sealing tube 24 blocks and seals the gas supply hole 23 above the liquid level, preventing some carbon dioxide gas from being discharged before entering the alkaline substance solution of gasification slag to react, thus improving the utilization rate of the reaction system.

[0030] After the carbon dioxide and the alkaline solution of the gasification slag undergo a neutralization reaction, a precipitate will form. With repeated use of the equipment, scale will gradually accumulate on the gas delivery pipe 22, gas delivery hole 23, and sealing pipe 24. This scale will block the openings of the gas delivery pipe 22 and sealing pipe 24, as well as the gas delivery hole 23, affecting the normal input rate of carbon dioxide gas. Therefore, the sealing cover 32 can be lifted upward by extending the telescopic rod of the electric push rod 31, thereby exposing the gas delivery pipe 22. First, rotate the threaded ring 28, causing the threaded ring 28 to drive the connecting ring 29 to move closer to the sealing cover 32. The connecting ring 29 will drive the double anti-rotation plate 211 to move away from the suspension arm 213, releasing the restriction on the suspension arm 213. Rotate the gas delivery pipe 22, causing the suspension arm 213 to rotate out of the support arm 212, and the gas delivery pipe 22 can be removed. After cleaning the scale on the gas delivery pipe 22 and sealing pipe 24, they can be reinstalled for continued use.

[0031] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A device for neutralizing carbon dioxide tail gas with alkaline substances in gasification slag, characterized in that, include: Reaction vessel (1); Gas delivery assembly (2) is located inside the reaction vessel (1). The gas delivery assembly (2) is used to deliver carbon dioxide gas to the reaction vessel (1). The gas delivery assembly (2) includes an installation pipe (21) and a gas delivery pipe (22). An anti-rotation component is provided on the installation pipe (21). A suspension component is provided at one end of the gas delivery pipe (22). The gas delivery pipe (22) is connected to the installation pipe (21) through the suspension component and the anti-rotation component. Multiple gas delivery holes (23) are opened on the outside of the gas delivery pipe (22).

2. The device for neutralizing carbon dioxide tail gas with alkaline substances in gasification slag as described in claim 1, characterized in that, The gas pipeline (22) is provided with a sealing pipe (24) inside, and a floating ring seat (25) is provided at one end of the sealing pipe (24).

3. The neutralization reaction apparatus for carbon dioxide tail gas and alkaline substances in gasification slag as described in claim 2, characterized in that, The outer surface of the mounting tube (21) is provided with a threaded connection groove (26) and a plurality of vertical grooves (27). The anti-rotation component includes a threaded ring (28) threaded to the outside of the mounting tube (21) and a connecting ring (29) disposed outside the mounting tube (21). The threaded ring (28) and the connecting ring (29) are rotatably connected. A plurality of connecting blocks (210) are fixed on the inner surface of the connecting ring (29). The plurality of connecting blocks (210) slide in the interior of the plurality of vertical grooves (27). A plurality of double anti-rotation plates (211) are fixed below the connecting ring (29).

4. The device for neutralizing carbon dioxide tail gas with alkaline substances in gasification slag as described in claim 3, characterized in that, The suspension includes multiple support arms (212) fixed to the outer surface of the mounting pipe (21) and multiple suspension arms (213) fixed to one end of the gas transmission pipe (22).

5. The neutralization reaction apparatus for carbon dioxide tail gas and alkaline substances in gasification slag as described in claim 4, characterized in that, The reaction vessel (1) is provided with a sealing assembly (3) on its exterior. The sealing assembly (3) includes two electric push rods (31) fixed to the exterior of the reaction vessel (1) and a cover (32) set on the top of the reaction vessel (1). One end of the telescopic rods of the two electric push rods (31) is fixed to the bottom of the cover (32), and the mounting tube (21) rotates inside the cover (32).

6. The device for neutralizing carbon dioxide tail gas with alkaline substances in gasification slag as described in claim 5, characterized in that, A motor (4) is fixed above the cover (32) via a connecting frame. A small gear (5) is fixed to one end of the output shaft of the motor (4). A large gear (6) is fixed to the outside of the mounting tube (21). The small gear (5) meshes with the large gear (6).

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