A leaching tower for tail gas washing

Abstract

The utility model discloses a leaching tower for tail gas washing, including a leaching tower, a water collecting pool is arranged inside the leaching tower, an air intake pipe is fixedly plugged on one side of the leaching tower, the air intake pipe is arranged in an L-shaped structure, one end of the air intake pipe is arranged on the outside of the leaching tower, and the other end of the air intake pipe is arranged vertically downward inside the water collecting pool, a spray chamber and a washing chamber are arranged inside the leaching tower, the spray chamber is located directly above the washing chamber, the inside of the washing chamber is connected with the inside of the spray chamber, and a perforated plate is fixedly installed horizontally inside the washing chamber. By directly arranging one end of the air intake pipe in the water collecting pool, the acidic gas can directly contact the alkaline liquid in the water collecting pool when entering the leaching tower from the air intake pipe, and the arrangement of multiple perforated plates can reduce the circulation speed of the acidic gas, and allow the acidic gas to stay in the leaching tower for a longer time, so that it can fully react with the alkaline liquid sprayed from the spray head.

Description

Technical Field

[0001] The utility model relates to the technical field of leaching towers, in particular to a leaching tower for tail gas washing. Background Art

[0002] Polyferric sulfate and ferrous sulfate are industrial raw materials for industrial, agricultural and domestic wastewater treatment. In the prior art, they are mainly produced by the contact reaction of an aqueous solution of mineral processing tailings with sulfuric acid. However, during the reaction, the two will produce a certain amount of acidic gas after the reaction, which requires purification of the acidic gas.

[0003] The purification treatment method in the prior art is mostly carried out through a leaching tower, that is, the acidic gas is introduced into the bottom of the leaching tower, and then an alkaline liquid is sprayed on the top of the leaching tower to make the two react neutrally to achieve a purification treatment effect. However, in actual operation, the flow rate of the acidic gas in the leaching tower is relatively fast, resulting in a short residence time of the acidic gas in the leaching tower, so that the alkaline liquid sprayed from the top of the leaching tower is discharged from the exhaust pipe before it has sufficient contact with the acidic gas, thereby resulting in insufficient washing of the acidic gas, and there is still air pollution after being discharged to the external environment.

[0004] To this end, we propose a scrubbing tower for tail gas scrubbing. Utility Model Content

[0005] The main purpose of the utility model is to provide a leaching tower for exhaust gas washing. By directly arranging one end of the air inlet pipe in the water collecting tank, the acidic gas can directly contact the alkaline liquid in the water collecting tank when entering the leaching tower from the air inlet pipe. In combination with the arrangement of multiple perforated plates, the circulation speed of the acidic gas can be reduced, and the acidic gas can be allowed to stay in the leaching tower longer, so that it can fully react with the alkaline liquid sprayed from the spray head, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A tail gas scrubbing elution tower comprises a elution tower, a water collecting tank is arranged inside the elution tower, an air intake pipe is fixedly connected to one side of the elution tower, the air intake pipe is arranged in an L-shaped structure, one end of the air intake pipe is arranged outside the elution tower, and the other end of the air intake pipe is vertically downwardly arranged inside the water collecting tank;

[0008] A spray chamber and a washing chamber are provided inside the elution tower. The spray chamber is located directly above the washing chamber, and the interior of the washing chamber is communicated with the interior of the spray chamber.

[0009] Furthermore, a perforated plate is fixedly installed horizontally inside the washing chamber, and the perforated plate is provided at multiple locations, and holes are opened inside the perforated plate at multiple locations.

[0010] Furthermore, a spray head is provided in the inner upper part of the spray chamber, and the water inlet end of the spray head passes through the top of the elution tower and is fixedly connected to the bottom end of the liquid inlet pipe, and the liquid inlet pipe is fixedly and vertically plugged into the top of the elution tower.

[0011] Furthermore, a water pumping pipe is fixedly connected to the lower part of one side of the elution tower, the interior of the water pumping pipe is connected to the interior of the water collecting tank, and one end of the water pumping pipe away from the elution tower is fixedly connected to the water pumping end of the water pump.

[0012] Furthermore, the drainage end of the water pump is fixedly connected to the bottom end of the water outlet pipe, and the other end of the water outlet pipe is plug-connected to one side of the liquid inlet pipe and is internally communicated.

[0013] Furthermore, an air outlet pipe is provided at an upper portion of one side of the elution tower, and the interior of the air outlet pipe is communicated with the interior of the spray chamber.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by directly setting one end of the air inlet pipe in the water collecting tank, the acidic gas can directly contact the alkaline liquid in the water collecting tank when entering the elution tower from the air inlet pipe, and combined with the setting of multiple perforated plates, the circulation speed of the acidic gas can be reduced, and the acidic gas can be allowed to stay in the elution tower longer, so that it can fully react with the alkaline liquid sprayed from the spray head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a tail gas washing elution tower.

[0016] Figure 2 The utility model is a schematic diagram of the plan structure of a tail gas washing tower.

[0017] Figure 3 The utility model is a schematic diagram of the internal structure of a washing tower for tail gas washing.

[0018] In the figure: 1. liquid inlet pipe; 2. elution tower; 3. hole; 4. air outlet pipe; 5. air inlet pipe; 6. water suction pipe; 7. water pump; 8. water outlet pipe; 9. water collecting tank; 10. spray head; 11. spray chamber; 12. washing chamber; 13. perforated plate. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1 , Figure 2 , Figure 3As shown, a tail gas scrubbing elution tower comprises an elution tower 2, a water collecting tank 9 is arranged inside the elution tower 2, an air intake pipe 5 is fixedly connected to one side of the elution tower 2, and the air intake pipe 5 is arranged in an L-shaped structure, one end of the air intake pipe 5 is arranged outside the elution tower 2, and the other end of the air intake pipe 5 is vertically downwardly arranged inside the water collecting tank 9;

[0021] The elution tower 2 is provided with a spray chamber 11 and a washing chamber 12, wherein the spray chamber 11 is located directly above the washing chamber 12, and the interior of the washing chamber 12 is connected to the interior of the spray chamber 11; a perforated plate 13 is fixedly installed horizontally inside the washing chamber 12, and the spatial distribution of the washing chamber 12 is narrow at the top and wide at the bottom, and the perforated plate 13 is provided at multiple locations, and holes 3 are opened inside the perforated plates 13 at multiple locations. The perforated plates 13 at multiple locations are divided into perforated plates 13 with different surface areas according to the spatial distribution of the washing chamber 12, and the arrangement of the perforated plates 13 can also slow down the circulation speed of the acid gas;

[0022] A spray head 10 is provided in the upper inner part of the spray chamber 11, and the water inlet end of the spray head 10 passes through the top of the elution tower 2 and is fixedly connected to the bottom end of the liquid inlet pipe 1, and the liquid inlet pipe 1 is fixedly and vertically plugged into the top of the elution tower 2; a water pumping pipe 6 is fixedly connected to the lower part of one side of the elution tower 2, and the interior of the water pumping pipe 6 is connected to the interior of the water collecting tank 9, and the end of the water pumping pipe 6 away from the elution tower 2 is fixedly connected to the water pumping end of the water pump 7;

[0023] The drainage end of the water pump 7 is fixedly connected to the bottom end of the water outlet pipe 8, and the other end of the water outlet pipe 8 is plug-connected to one side of the liquid inlet pipe 1 and is internally connected; an air outlet pipe 4 is provided on the upper part of one side of the elution tower 2, and the interior of the air outlet pipe 4 is connected to the interior of the spray chamber 11.

[0024] It should be noted that the utility model is a leaching tower for tail gas washing. First, a suitable alkaline liquid is poured into the liquid inlet pipe 1. The alkaline liquid flows into the inside of the spray head 10 through the liquid inlet pipe 1, and then is sprayed out by the spray head 10. The sprayed alkaline liquid will pass through each hole plate 13 and finally flow into the water collecting tank 9 for accumulation. Then, the acid gas will be discharged into the leaching tower 2 through the air inlet pipe 5. The acid gas will first contact and react with the alkaline liquid in the water collecting tank 9. Then, the water pump 7 is started by an external power supply. The water pump 7 will pump the alkaline liquid in the water collecting tank 9 into the water outlet pipe 8 through the pumping pipe 6, and then flow from the water outlet pipe 8 to the liquid inlet pipe 1, and finally flow from the liquid inlet pipe 1 into the spray head 1. 0, the alkaline liquid is sprayed out by the spray head 10 to form a cycle, but it should be noted that after several cycles, the liquid in the water collection tank 9 needs to be completely discharged (the outlet pipe 8 and the liquid inlet pipe 1 can be disconnected and discharged), and then new alkaline liquid is discharged into the liquid inlet pipe 1 to form a cycle, and the acid gas discharged into the elution tower 2 will rise to the spray chamber 11 from the holes 3 passing through each perforated plate 13, and the alkaline liquid sprayed by the spray head 10 will also fall from the holes 3 of each perforated plate 13 to the washing chamber 12, so that the two can fully contact and react, and finally the reacted gas that rises to the spray chamber 11 will be discharged from the outlet pipe 4.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A tail gas scrubbing elution tower, comprising an elution tower (2), characterized in that: A water collecting tank (9) is provided inside the elution tower (2), an air inlet pipe (5) is fixedly connected to one side of the elution tower (2), the air inlet pipe (5) is arranged in an L-shaped structure, one end of the air inlet pipe (5) is arranged outside the elution tower (2), and the other end of the air inlet pipe (5) is arranged vertically downward inside the water collecting tank (9); A spray chamber (11) and a washing chamber (12) are provided inside the elution tower (2); the spray chamber (11) is located directly above the washing chamber (12); and the interior of the washing chamber (12) is communicated with the interior of the spray chamber (11).

2. The tail gas scrubbing elution tower according to claim 1, characterized in that: A perforated plate (13) is fixedly installed horizontally inside the washing chamber (12), and the perforated plate (13) is provided at multiple locations, and holes (3) are opened inside the perforated plate (13) at multiple locations.

3. The tail gas scrubbing elution tower according to claim 1, characterized in that: A spray head (10) is provided in the upper inner part of the spray chamber (11); the water inlet end of the spray head (10) passes through the top of the elution tower (2) and is fixedly connected to the bottom end of the liquid inlet pipe (1); and the liquid inlet pipe (1) is fixedly and vertically plugged into the top of the elution tower (2).

4. The tail gas scrubbing elution tower according to claim 1, characterized in that: A water pumping pipe (6) is fixedly connected to the lower part of one side of the elution tower (2), the interior of the water pumping pipe (6) is connected to the interior of the water collecting tank (9), and the end of the water pumping pipe (6) away from the elution tower (2) is fixedly connected to the water pumping end of the water pump (7).

5. The tail gas scrubbing elution tower according to claim 4, characterized in that: The drainage end of the water pump (7) is fixedly connected to the bottom end of the water outlet pipe (8), and the other end of the water outlet pipe (8) is plug-connected to one side of the liquid inlet pipe (1) and is in internal communication.

6. The tail gas scrubbing elution tower according to claim 1, characterized in that: An air outlet pipe (4) is provided at an upper portion of one side of the elution tower (2), and the interior of the air outlet pipe (4) is communicated with the interior of the spray chamber (11).

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