Tail gas tower inlet gas distribution device

Abstract

The utility model discloses an inlet gas distribution device of a tail gas tower. The inlet gas distribution device comprises a tower body and a gas inlet assembly, a separation chamber is arranged below the tower body, an air inlet is arranged below the separation chamber, a lower cover plate is sleeved below the air inlet, a pore plate is arranged on the upper side of the separation chamber, and a filler is arranged above the pore plate; a liquid outlet pipe is arranged at the lower side end of the separation chamber; an air inlet component is arranged in the center of the lower side of the separation chamber. The gas inlet pipe is arranged at the bottom of the separation chamber, tail gas can diffuse and rise from the center to the periphery through the gas holes, and therefore it is guaranteed that gas can make full contact with filler in the tower body, meanwhile, pipeline installation is facilitated, and space and pipeline cost are saved.

Description

Technical Field

[0001] This application belongs to the field of exhaust gas tower technology, specifically relating to an exhaust gas tower air inlet distribution device. Background Technology

[0002] Many chlorine-containing compounds produce hydrogen chloride gas as a byproduct during chemical reactions. To recover and treat the pollution caused by hydrogen chloride, it is generally absorbed by water or alkaline solutions. Currently, the most commonly used absorption equipment is the falling film absorber and the packed absorption tower. For complete absorption, several stages of treatment are often required.

[0003] For example, patent CN204563886U provides a fully graphite-based combined hydrogen chloride tail gas absorption tower, which consists of a cooling absorption section, a packing section, and a plate tower section from bottom to top. The cooling absorption section contains graphite absorption heat exchange blocks with an outer steel shell. During use, a cooling medium is circulated through the shell to cool the absorbed material. The packing section uses a graphite cylinder filled with high-efficiency packing. The plate tower section includes at least one plate tower section, with absorption plates installed inside. However, the hydrogen chloride tail gas exits from the bottom of the falling film absorber and enters the tail gas tower from the bottom side section. This may cause the packing material in the part of the tail gas tower far from the inlet to not have sufficient contact with the tail gas, resulting in a reduction in tail gas filtration efficiency. Utility Model Content

[0004] This application provides an exhaust gas tower intake distribution device to solve the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is: a tail gas tower air inlet distribution device, including: a tower body and an air inlet assembly; a separation chamber is provided below the tower body, an air inlet is provided below the separation chamber, a lower cover plate is sleeved below the air inlet, an orifice plate is provided on the upper side of the separation chamber, and packing is provided above the orifice plate; a liquid outlet pipe is provided at the lower end of the separation chamber; and an air inlet assembly is provided at the center of the lower side of the separation chamber.

[0006] Furthermore, the air intake assembly includes an air intake pipe inserted into the air intake port, and a conical shield is provided above the air intake pipe.

[0007] Furthermore, multiple sets of air outlets are evenly distributed on the side wall of the intake pipe.

[0008] Furthermore, the air vents are arranged in a vertical strip shape.

[0009] Furthermore, in the vertical direction, the lowest point of the vent is higher than the highest point of the inner wall of the liquid outlet pipe.

[0010] Furthermore, the perforated plate is provided with multiple sets of through holes running vertically through the plate.

[0011] The beneficial effects of this application are: the air inlet pipe is set at the bottom of the separation chamber, and the exhaust gas can be diffused and rise from the center to the surrounding area through the air holes, thereby ensuring that the gas can fully contact the packing in the tower body, while facilitating pipeline installation and saving space and pipeline costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the exhaust tower air distribution device of this application;

[0013] Figure 2 yes Figure 1 A schematic diagram of the structure of an embodiment of the air intake assembly. Detailed Implementation

[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0015] like Figure 1-2 As shown, this application provides an exhaust gas tower inlet distribution device, including: a tower body 1 and an inlet assembly 2; a separation chamber 3 is provided below the tower body 1, an inlet 31 is provided below the separation chamber 3, a lower cover plate 32 is sleeved below the inlet 31, an orifice plate 4 is provided on the upper side of the separation chamber 3, and packing 5 is provided above the orifice plate 4; a liquid outlet pipe 6 is provided at the lower end of the separation chamber 3; and the inlet assembly 2 is provided at the center of the lower side of the separation chamber 3. The above design allows the exhaust gas to enter from the inlet assembly 2 at the bottom of the separation chamber 3, and then diffuse and rise evenly in all directions, ensuring that the exhaust gas can evenly pass through the orifice plate 4 and contact the packing 5.

[0016] The intake assembly 2 includes an intake pipe 21 inserted into the intake port 31, and a conical shield 22 is provided above the intake pipe 21. The conical shield 22 in the above design can prevent the exhaust gas absorbent liquid from flowing back into the intake pipe 21.

[0017] Multiple sets of exhaust holes 23 are evenly provided on the side wall of the intake pipe 21. The exhaust holes 23 in the above design allow the exhaust gas to diffuse evenly around the intake pipe 21 and come into contact with the packing 5, thereby improving the exhaust gas absorption efficiency.

[0018] The exhaust port 23 is arranged in a vertical strip shape to ensure that all exhaust gas can be discharged from the exhaust port 23 in a timely manner and to prevent exhaust gas from accumulating.

[0019] In the vertical direction, the lowest point of the vent 23 is higher than the highest point of the inner wall of the liquid outlet pipe 6. This design can prevent the liquid from flowing back into the inlet pipe 21 from the vent when there is a large amount of absorbent.

[0020] The orifice plate 4 is provided with multiple sets of through holes 41 that run vertically through the plate. The through holes 41 in the above design facilitate the entry of exhaust gas into the packing 5, and at the same time allow the absorbent liquid in the packing 5 to fall into the separation chamber 3 and be discharged from the outlet pipe 6.

[0021] In terms of specific working principle, the exhaust gas enters the intake pipe 21 through the intake port 31 at the bottom of the separation chamber 3, then diffuses outwards through the outlet port 23 and enters the packing 5 through the perforated plate 4. Above the packing 5, absorbent liquid flows in to absorb harmful substances in the exhaust gas before flowing back into the separation chamber 3, while the outlet pipe 6 discharges the absorbent liquid. Because the outlet port 23 is positioned higher than the outlet pipe 6, backflow of the absorbent liquid can be effectively prevented.

[0022] This application places the air inlet pipe 21 at the bottom of the separation chamber 3, and allows the exhaust gas to diffuse and rise from the center to the surrounding area through the air holes, thereby ensuring that the gas can fully contact the packing 5 in the tower body 1, while facilitating pipeline installation and saving space and pipeline costs.

[0023] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A tail gas tower inlet distribution device, characterized in that, include: The tower body and the air inlet assembly are as follows: a separation chamber is provided at the bottom of the tower body, an air inlet is provided at the bottom of the separation chamber, a lower cover plate is sleeved below the air inlet, an orifice plate is provided on the upper side of the separation chamber, and packing is provided above the orifice plate; a liquid outlet pipe is provided at the lower end of the separation chamber; the air inlet assembly is provided at the center of the lower side of the separation chamber; the air inlet assembly includes an air inlet pipe inserted into the air inlet, and a conical protective cover is provided above the air inlet pipe; multiple sets of air outlet holes are evenly opened on the side wall of the air inlet pipe; multiple sets of through holes are provided in the orifice plate.

2. The exhaust gas tower inlet distribution device according to claim 1, characterized in that, The air vents are arranged in a vertical strip shape.

3. The exhaust gas tower inlet distribution device according to claim 2, characterized in that, In the vertical direction, the lowest point of the air outlet is higher than the highest point of the inner wall of the liquid outlet pipe.

Images