An exhaust gas absorption device

Abstract

The utility model discloses a waste gas absorption device relates to chemical equipment technical field, the utility model discloses a absorption tank, the top central of absorption tank is provided with waste gas export, and the lower part of absorption tank is provided with waste gas import, and the inside cavity waste gas import of absorption tank is installed with several groups of gas absorption subassembly from bottom to top above, and gas absorption subassembly includes gas collector, and the top of gas collector is connected with the gas distribution pipe of intercommunication with it, and the top of gas distribution pipe is provided with a plurality of vent hole, and the top of gas distribution pipe is provided with two support sieve plates at intervals, and the between two support sieve plates is provided with the filler layer, and the top of absorption tank is provided with the absorption liquid import, and the bottom of absorption tank is provided with absorption liquid export, the utility model discloses setting multiple gas absorption subassembly, and the waste gas is collected and is distributed again for many times, and the waste gas reacts with the absorption liquid in the filler layer for many times, prolongs the waste gas absorption time, makes the waste gas absorption more uniform.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a waste gas absorption device. Background Technology

[0002] In chemical production processes, drying and evaporation are involved. During these processes, high temperature or negative pressure environments cause volatile components in materials to escape with the airflow, forming a large amount of industrial waste gas. This waste gas contains harmful substances such as volatile organic compounds, acidic gases, and alkaline gases. Direct emission of such gas will seriously pollute the atmospheric environment, exacerbate environmental problems such as ozone pollution and acid rain, and also waste raw materials. Further recycling and treatment are required before emissions can meet standards. Existing waste gas absorption devices cannot absorb waste gas evenly, making it difficult to guarantee the absorption effect and resulting in low absorption efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a waste gas absorption device to solve the problems of existing waste gas absorption devices being unable to absorb waste gas evenly and having low waste gas absorption efficiency.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows: An exhaust gas absorption device includes an absorption tank with an exhaust gas outlet at the center of the top and an exhaust gas inlet at the bottom. Several gas absorption components are installed from bottom to top above the exhaust gas inlet inside the absorption tank. Each gas absorption component includes a gas collector, the top surface of which is connected to a gas distribution pipe. Several vent holes are provided on the top surface of the gas distribution pipe. Two support sieves are spaced apart above the gas distribution pipe, and a packing layer is provided between the two support sieves. An absorbent liquid inlet is located at the top of the absorption tank, and an absorbent liquid outlet is located at the bottom of the absorption tank.

[0005] Furthermore, the distance between the two supporting sieve plates of the same gas absorption assembly is 1-1.5m.

[0006] Furthermore, the packing material in the packing layer is a stainless steel Pall ring.

[0007] Furthermore, the gas distribution pipe consists of two cross-shaped and interconnected pipes.

[0008] Furthermore, each gas distribution pipe is uniformly provided with 10-20 vent holes.

[0009] Furthermore, the diameter of the vent hole is 5-10 mm.

[0010] Furthermore, the bottom of the gas collector is a cone shape.

[0011] Furthermore, the angle between the conical generatrix at the bottom of the gas collector and the bottom surface is 3-10 degrees.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The gas collector in the gas absorption assembly collects the waste gas from the bottom of the absorption tank. A gas distribution pipe is connected to the top of the gas collector, and the gas distribution pipe is connected to the top of the gas collector. The waste gas collected by the gas collector enters the gas distribution pipe and then flows out through the vent on the gas distribution pipe. The gas distribution pipe forcibly redistributes the flow direction of the waste gas, completely changing the direction of the waste gas. This allows the waste gas flowing out of the vent to enter different positions of the packing layer upwards. At the same time, absorbent liquid is added into the absorption tank. The absorbent liquid flows downwards along the surface of the packing layer. The upward-flowing waste gas and the downward-flowing absorbent liquid fully contact the surface of the packing. The harmful substances in the waste gas are fully absorbed by the absorbent liquid. In addition, multiple sets of gas absorption assemblies are installed in the inner cavity of the absorption tank from bottom to top. The waste gas can be collected and redistributed multiple times. The waste gas and absorbent liquid fully contact each other in the packing layer for absorption multiple times. This not only makes the absorption more uniform but also extends the waste gas absorption time and enhances the absorption effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the gas collector and gas distribution pipe of this utility model; Figure 3 This is a cross-sectional view of the gas collector and gas distribution pipe of this utility model.

[0014] In the picture: 1. Exhaust gas inlet; 2. Exhaust gas outlet; 3. Absorbent liquid inlet; 4. Absorbent liquid outlet; 5. Gas collector; 6. Gas distribution pipe; 7. Packing layer; 8. Absorbent tank; 9. Supporting sieve plate; 10. Vent hole; 11. Absorbent liquid. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0016] like Figure 1-3As shown, a waste gas absorption device includes an absorption tank 8, with a waste gas outlet 2 at the center of the top of the absorption tank 8 and a waste gas inlet 1 at the bottom. Several sets of gas absorption components are installed from bottom to top above the waste gas inlet 1 inside the absorption tank 8. Each gas absorption component includes a gas collector 5, which can fully collect the waste gas at the bottom of the absorption tank 8. A gas distribution pipe 6 is connected to the top surface of the gas collector 5 and communicates with it. Several vent holes 10 are opened on the top surface of the gas distribution pipe 6, which forces a redistribution of the gas. The direction of the exhaust gas flow is completely changed. Two supporting screen plates 9 are arranged at intervals above the gas distribution pipe 6. A packing layer 7 is arranged between the two supporting screen plates 9. The packing layer 7 allows the upward-flowing exhaust gas to fully contact the downward-flowing absorbent liquid 11. The top of the absorption tank 8 has an absorbent liquid inlet 3 and the bottom of the absorption tank 8 has an absorbent liquid outlet 4. After the absorbent liquid 11 is added from the top of the absorption tank 8, it finally flows into the bottom of the absorption tank 8. The bottom of the absorption tank 8 has an absorbent liquid outlet 4, and the absorbent liquid 11 is discharged from the absorbent liquid outlet 4.

[0017] The distance between the two supporting sieve plates 9 of the same gas absorption assembly is 1-1.5m.

[0018] The filler in the packing layer 7 is stainless steel Pall rings, with a filling rate of 80-90%.

[0019] The gas distribution pipe 6 consists of two cross-shaped and interconnected pipes.

[0020] Each gas distribution pipe 6 is evenly provided with 10-20 vent holes 10.

[0021] The diameter of the vent 10 is 5-10 mm.

[0022] The gas collector 5 has a conical bottom, which can fully collect the waste gas at the bottom of the absorption tank 8.

[0023] The angle between the conical generatrix at the bottom of the gas collector 5 and the bottom surface is 3-10 degrees.

[0024] When using it, the following steps are included: Absorbent liquid 11 is continuously added to the absorption tank 8 through absorbent inlet 3, while simultaneously, waste gas is introduced into the waste gas inlet 1. The waste gas enters the gas collector 5 of the first group of gas absorption components and then enters the gas distribution pipe 6. The waste gas in the gas distribution pipe 6 flows out through the vent 10. The waste gas flows upward and comes into full contact with the absorbent liquid 11 flowing downward along the surface of the packing layer 7. The absorbent liquid 11 fully absorbs the harmful substances in the waste gas. The waste gas then passes through multiple gas absorption components for full absorption in the same manner. The upward-flowing waste gas is discharged from the waste gas outlet 2, and the downward-flowing absorbent liquid 11 is discharged from the absorbent liquid outlet 4.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste gas absorption device, characterized in that: The absorption tank (8) has a waste gas outlet (2) at the center of the top and a waste gas inlet (1) at the bottom. Several gas absorption components are installed above the waste gas inlet (1) in the inner cavity of the absorption tank (8) from bottom to top. The gas absorption components include a gas collector (5). The top surface of the gas collector (5) is connected to a gas distribution pipe (6) that communicates with it. Several ventilation holes (10) are opened on the top surface of the gas distribution pipe (6). Two support sieve plates (9) are spaced apart above the gas distribution pipe (6). A packing layer (7) is provided between the two support sieve plates (9). An absorption liquid inlet (3) is opened at the top of the absorption tank (8), and an absorption liquid outlet (4) is opened at the bottom of the absorption tank (8).

2. The waste gas absorption device according to claim 1, characterized in that: The distance between the two supporting sieve plates (9) of the same gas absorption assembly is 1-1.5m.

3. The waste gas absorption device according to claim 2, characterized in that: The packing layer (7) is filled with stainless steel Pall rings.

4. The waste gas absorption device according to claim 3, characterized in that: The gas distribution pipe (6) consists of two cross-shaped and interconnected pipes.

5. The waste gas absorption device according to claim 4, characterized in that: Each gas distribution pipe (6) is provided with 10-20 vent holes (10) evenly distributed.

6. The waste gas absorption device according to claim 5, characterized in that: The diameter of the vent (10) is 5-10 mm.

7. The waste gas absorption device according to claim 6, characterized in that: The bottom of the gas collector (5) is a cone.

8. The waste gas absorption device according to claim 7, characterized in that: The angle between the conical generatrix at the bottom of the gas collector (5) and the bottom surface is 3-10 degrees.

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