Sulfuric acid mist trapping and treating device for sulfuric acid waste gas

Abstract

The utility model discloses a sulfuric acid waste gas trapping and sulfuric acid mist processing device which comprises a first processing mechanism and a second processing mechanism, the first processing mechanism comprises a first processing tank and a first infusion pump, and the top of the first infusion pump is communicated with a first liquid feeding pipe; one end of the first liquid feeding pipe penetrates through the first treatment tank and is communicated with a first annular pipe, the bottom of the first annular pipe is communicated with a second annular pipe through a pipeline, the surfaces of the first annular pipe and the second annular pipe are both communicated with first spray heads, and the top of the first treatment tank is communicated with a first circulating fan through a pipeline; the surface of the first circulating fan is communicated with a first air supply pipe; and the second treatment mechanism comprises a second treatment tank and a second infusion pump, and a partition plate is fixed to the upper portion of the inner wall of the second treatment tank. The sulfuric acid mist waste gas mixing device has the advantages that sulfuric acid mist waste gas and alkaline liquid can be mixed for multiple times, so that the sulfuric acid mist waste gas can be mixed more comprehensively.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid mist treatment, in particular to a sulfuric acid waste gas capturing and sulfuric acid mist treating device. Background Technique

[0002] Sulfuric acid mist generally refers to the mist formed by sulfuric acid particles with a diameter of less than 3 μm in the air. It is one of the secondary pollutants in the atmosphere. Combustion of fossil fuels, sulfuric acid production and use processes, and exhaust gases and flue gases discharged from motor vehicles are important sources of sulfuric acid mist in the environment. Sulfur dioxide in the waste gas is easily oxidized to sulfur trioxide in the atmosphere, and sulfur trioxide has strong hygroscopicity. It combines with water vapor in the air, and the sulfuric acid waste gas capturing and sulfuric acid mist treating device is also used in the process of treating sulfuric acid mist.

[0003] At present, the treatment of sulfuric acid mist waste gas is to set up a spray pipe in a spray tower, and the spray pipe sprays an alkaline solution to carry out acid-base neutralization on the sulfuric acid mist waste gas. However, there are spray dead angles during the spraying process of the existing spray tower, and it is difficult to spray the solution on some positions. Therefore, it is necessary to improve the existing sulfuric acid waste gas capturing and sulfuric acid mist treating device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sulfuric acid waste gas capturing and sulfuric acid mist treating device, which has the advantages of being able to mix sulfuric acid mist waste gas and alkaline liquid for treatment multiple times, so that the sulfuric acid mist waste gas can obtain a more comprehensive mixing effect.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a sulfuric acid waste gas capturing and sulfuric acid mist treating device, including a first treatment mechanism and a second treatment mechanism,

[0006] The first treatment mechanism includes a first treatment tank and a first liquid pumping pump. The top of the first liquid pumping pump is communicated with a first liquid delivery pipe. One end of the first liquid delivery pipe penetrates through the first treatment tank and is communicated with a first annular pipe. The bottom of the first annular pipe is communicated with a second annular pipe through a pipeline. The surfaces of the first annular pipe and the second annular pipe are both communicated with first nozzles. The top of the first treatment tank is communicated with a first circulating fan through a pipeline. The surface of the first circulating fan is communicated with a first air delivery pipe;

[0007] The second treatment mechanism includes a second treatment tank and a second liquid pumping pump. A partition plate is fixed above the inner wall of the second treatment tank. The surface of the second liquid pumping pump is communicated with a second liquid delivery pipe. The second liquid delivery pipe penetrates through the second treatment tank and is equipped with a rotary joint. A shunt pipe is installed at the bottom of the rotary joint. The top of the partition plate is communicated with a second circulating fan through a pipeline. One end of the second circulating fan is communicated with a second air delivery pipe. The bottom of the shunt pipe is communicated with a second nozzle. The top of the partition plate is communicated with an exhaust pipe. A demister is fixed on the inner wall of the exhaust pipe.

[0008] Preferably, as a sulfuric acid waste gas capture and treatment sulfuric acid mist device of the present utility model, a motor is fixed to the top of the partition plate, a rotating shaft is fixed to the output shaft of the motor, the top of the rotating shaft is rotatably connected to the inner wall top of the second treatment tank, and pulley wheels are fixed to both the rotating shaft and the surface of the shunt pipe, and the pulley wheels on both sides are connected by a belt drive.

[0009] Preferably, as a sulfuric acid waste gas capture and treatment sulfuric acid mist device of the present utility model, spoiler plates are fixed to the surface of the shunt pipe.

[0010] Preferably, as a sulfuric acid waste gas capture and treatment sulfuric acid mist device of the present utility model, the positions of the first nozzles on the surfaces of the second annular pipe and the first annular pipe are staggered.

[0011] Preferably, as a sulfuric acid waste gas capture and treatment sulfuric acid mist device of the present utility model, a first drain valve is connected to the bottom of the first treatment tank, a second drain valve is connected to the bottom of the second treatment tank, and a liquid guide shell is fixed to the bottom inner wall of the first treatment tank.

[0012] Preferably, as a sulfuric acid waste gas capture and treatment sulfuric acid mist device of the present utility model, a one-way valve is installed on the surface of the first air supply pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the setting of the first treatment mechanism of the present utility model, the waste gas can be sprayed and treated simultaneously from above and below. The sulfuric acid mist waste gas enters the first treatment tank through the intake pipe. The first liquid extraction pump can extract the external alkaline solution and spray it out simultaneously through the first nozzles on the surfaces of the first annular pipe and the second annular pipe. The combination of the first annular pipe and the second annular pipe can achieve the effect of simultaneous upper and lower spraying. The spraying in the upper and lower directions can more comprehensively cover the space through which the waste gas flows. Whether the sulfuric acid mist particles are in the upper layer or the lower layer of the waste gas flow, they can contact sufficient alkaline liquid, increasing the opportunity of the neutralization reaction and improving the removal efficiency of pollutants. The waste gas after preliminary mixing can be extracted by the first circulation fan and transported through the first air supply pipe.

[0015] 2. Through the setting of the second treatment mechanism in the present utility model, the waste gas can achieve a more comprehensive spraying and mixing effect. The sulfuric acid mist waste gas after preliminary mixing can be transported by the first air supply pipe to the lower part inside the second treatment tank, and the sulfuric acid mist waste gas can be transported upward. During this period, the second liquid extraction pump will extract the external alkaline solution and spray it downward through the second liquid supply pipe, the shunt pipe, and the second nozzle. During the spraying process of the second nozzle, the shunt pipe can rotate, and the alkaline solution sprayed when the second nozzle rotates can more evenly cover the waste gas space inside the second treatment tank, ensuring that every part of the waste gas can come into contact with the alkaline solution, improving the absorption efficiency, and enhancing the collision chance between the alkaline solution and the residual sulfuric acid mist particles in the waste gas. The second circulating air blower will extract the sulfuric acid mist waste gas above the second treatment tank and re-introduce it into the lower part inside the second treatment tank through the second air supply pipe. This can increase the contact time between the sulfuric acid mist waste gas and the alkaline solution, improve the treatment efficiency, and ensure the full mixing and reaction of the gas inside the second treatment tank. The waste gas after mixing and reaction can be discharged through the exhaust pipe, and the demister can achieve the demisting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a sectional three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 3 is a sectional structural schematic diagram of the first treatment mechanism in the present utility model;

[0019] Figure 4 is a sectional structural schematic diagram of the second treatment mechanism in the present utility model;

[0020] Figure 5 is a partial structural schematic diagram of the second treatment mechanism in the present utility model.

[0021] In the figure: 1. First treatment mechanism; 101. First treatment tank; 102. First liquid extraction pump; 103. First liquid supply pipe; 104. First annular pipe; 105. Second annular pipe; 106. First nozzle; 107. Liquid guide shell; 108. First drain valve; 109. First circulating air blower; 110. First air supply pipe; 111. Check valve; 2. Second treatment mechanism; 201. Second treatment tank; 202. Partition board; 203. Exhaust pipe; 204. Demister; 205. Second liquid extraction pump; 206. Second liquid supply pipe; 207. Rotary joint; 208. Motor; 209. Rotating shaft; 210. Pulley; 211. Shunt pipe; 212. Second nozzle; 213. Turbulence plate; 214. Second circulating air blower; 215. Second air supply pipe; 216. Second drain valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Please refer to Figures 1 - 5 , a sulfuric acid waste gas capturing and treating sulfuric acid mist device, including a first treatment mechanism 1 and a second treatment mechanism 2,

[0023] The first treatment mechanism 1 enables the waste gas to be sprayed and treated simultaneously from above and below, and the second treatment mechanism 2 enables the waste gas to obtain a more comprehensive spraying and mixing effect.

[0024] The first treatment mechanism 1 includes a first treatment tank 101 and a first liquid extraction pump 102. The top of the first liquid extraction pump 102 is connected to a first liquid delivery pipe 103. One end of the first liquid delivery pipe 103 penetrates through the first treatment tank 101 and is connected to a first annular pipe 104. The top of the first annular pipe 104 is fixedly connected to the inner wall top of the first treatment tank 101. The bottom of the first annular pipe 104 is connected to a second annular pipe 105 through a pipeline. The surfaces of the first annular pipe 104 and the second annular pipe 105 are both connected to first nozzles 106. The top of the first treatment tank 101 is connected to a first circulation fan 109 through a pipeline. The surface of the first circulation fan 109 is connected to a first air delivery pipe 110. The surface of the first treatment tank 101 is connected to an air inlet pipe;

[0025] The sulfuric acid mist waste gas enters the first treatment tank 101 through the air inlet pipe. The first liquid extraction pump 102 can extract the external alkaline solution and spray it out simultaneously through the first nozzles 106 on the surfaces of the first annular pipe 104 and the second annular pipe 105. The combination of the first annular pipe 104 and the second annular pipe 105 can achieve the effect of spraying from above and below simultaneously. The spraying in the upper and lower directions can more comprehensively cover the space through which the waste gas flows. Whether the sulfuric acid mist particles are in the upper layer or the lower layer of the waste gas flow, they can contact enough alkaline liquid, increasing the opportunity of the neutralization reaction and improving the removal efficiency of pollutants. The waste gas after preliminary mixing will be able to be extracted by the first circulation fan 109 and conveyed through the first air delivery pipe 110.

[0026] The second treatment mechanism 2 includes a second treatment tank 201 and a second liquid extraction pump 205. One end of the first air delivery pipe 110 is connected to the surface of the second treatment tank 201. A partition plate 202 is fixed above the inner wall of the second treatment tank 201. The surface of the second liquid extraction pump 205 is connected to a second liquid delivery pipe 206. The second liquid delivery pipe 206 penetrates through the second treatment tank 201 and is equipped with a rotary joint 207. A flow dividing pipe 211 is installed at the bottom of the rotary joint 207. The flow dividing pipe 211 penetrates through the partition plate 202. The top of the partition plate 202 is connected to a second circulation fan 214 through a pipeline. One end of the second circulation fan 214 is connected to a second air delivery pipe 215. The second air delivery pipe 215 penetrates through the second treatment tank 201 and is connected to its surface below. The bottom of the flow dividing pipe 211 is connected to a second nozzle 212. The top of the partition plate 202 is connected to an exhaust pipe 203. The exhaust pipe 203 penetrates through the second treatment tank 201. A demister 204 is fixed on the inner wall of the exhaust pipe 203;

[0027] The sulfuric acid mist waste gas after preliminary mixing can be transported by the first air supply pipe 110 to the lower part inside the second treatment tank 201. The sulfuric acid mist waste gas can be transported upward. During this period, the second liquid pumping pump 205 will extract the external alkaline solution and spray it downward through the second liquid supply pipe 206, the shunt pipe 211 and the second spray head 212. During the spraying process of the second spray head 212, the shunt pipe 211 can rotate. When the second spray head 212 rotates, the sprayed alkaline solution can more evenly cover the waste gas space inside the second treatment tank 201, ensuring that every part of the waste gas can come into contact with the alkaline solution, improving the absorption efficiency, and enhancing the collision chance between the alkaline solution and the residual sulfuric acid mist particles in the waste gas. The second circulation fan 214 will extract the sulfuric acid mist waste gas above the second treatment tank 201 and re-introduce it into the lower part inside the second treatment tank 201 through the second air supply pipe 215. In this way, the contact time between the sulfuric acid mist waste gas and the alkaline solution can be increased, the treatment efficiency can be improved, and the gas inside the second treatment tank 201 can be fully mixed and reacted. The waste gas after the mixing reaction can be discharged through the exhaust pipe 203, and the demister 204 can achieve the demisting effect.

[0028] Furthermore, a motor 208 is fixed to the top of the partition plate 202. The output shaft of the motor 208 is fixed with a rotating shaft 209. The top of the rotating shaft 209 is rotatably connected to the top inner wall of the second treatment tank 201. Pulley 210 is fixed on the surfaces of both the rotating shaft 209 and the shunt pipe 211, and the two pulleys 210 on both sides are connected by a belt in a transmission manner.

[0029] When the motor 208 starts, it will drive the rotating shaft 209 to rotate. The transmission of the two pulleys 210 on both sides and the belt can drive the shunt pipe 211 to rotate, thus realizing the rotating spraying effect of the shunt pipe 211 driving the second spray head 212.

[0030] Furthermore, a spoiler 213 is fixed to the surface of the shunt pipe 211.

[0031] The spoiler 213 rotates together with the shunt pipe 211, which can effectively disperse the waste gas flow, increase the turbulent mixing between gas and liquid, contribute to accelerating the neutralization reaction speed, and improve the treatment efficiency.

[0032] Furthermore, the positions of the first spray heads 106 on the surfaces of the second annular pipe 105 and the first annular pipe 104 are staggered.

[0033] Staggered arrangement of the first spray heads 106 can ensure more comprehensive spray coverage. The staggered layout in the vertical direction enables the alkaline liquid sprayed from different heights to more evenly contact the sulfuric acid mist particles in the waste gas, avoiding the problems of insufficient spraying or over-concentration in some areas that may be caused by single-plane spraying.

[0034] Further, a first drain valve 108 is connected to the bottom of the first treatment tank 101, a second drain valve 216 is connected to the bottom of the second treatment tank 201, and a liquid guide shell 107 is fixed to the bottom of the inner wall of the first treatment tank 101;

[0035] The arrangement of the two drain valves enables the normal discharge of the alkaline solution inside the first treatment tank 101 and the second treatment tank 201. The arrangement of the liquid guide shell 107 enables the alkaline solution to more easily fall into the first drain valve 108 along the liquid guide shell 107.

[0036] Further, a check valve 111 is installed on the surface of the first air supply pipe 110;

[0037] The arrangement of the check valve 111 can prevent the alkaline solution and sulfuric acid mist waste gas from entering the first air supply pipe 110.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sulfuric acid waste gas capturing and treating sulfuric acid mist device, characterized in that: It includes a first processing mechanism (1) and a second processing mechanism (2). The first processing mechanism (1) includes a first processing tank (101) and a first liquid extraction pump (102). The top of the first liquid extraction pump (102) is connected to a first liquid delivery pipe (103). One end of the first liquid delivery pipe (103) penetrates through the first processing tank (101) and is connected to a first annular pipe (104). The bottom of the first annular pipe (104) is connected to a second annular pipe (105) through a pipeline. The surfaces of the first annular pipe (104) and the second annular pipe (105) are both connected to first nozzles (106). The top of the first processing tank (101) is connected to a first circulation fan (109) through a pipeline. The surface of the first circulation fan (109) is connected to a first air delivery pipe (110). The second processing mechanism (2) includes a second processing tank (201) and a second liquid extraction pump (205). A partition plate (202) is fixed above the inner wall of the second processing tank (201). The surface of the second liquid extraction pump (205) is connected to a second liquid delivery pipe (206). The second liquid delivery pipe (206) penetrates through the second processing tank (201) and is equipped with a rotary joint (207). A flow dividing pipe (211) is installed at the bottom of the rotary joint (207). The top of the partition plate (202) is connected to a second circulation fan (214) through a pipeline. One end of the second circulation fan (214) is connected to a second air delivery pipe (215). The bottom of the flow dividing pipe (211) is connected to a second nozzle (212). The top of the partition plate (202) is connected to an exhaust air pipe (203). A demister (204) is fixed on the inner wall of the exhaust air pipe (203).

2. The sulfuric acid waste gas capturing and treating sulfuric acid mist device according to claim 1, characterized in that: A motor (208) is fixed on the top of the partition plate (202). The output shaft of the motor (208) is fixed with a rotating shaft (209). The top of the rotating shaft (209) is rotationally connected to the top of the inner wall of the second processing tank (201). Pulley wheels (210) are fixed on the surfaces of the rotating shaft (209) and the flow dividing pipe (211). The two pulley wheels (210) are connected by a belt in a transmission manner.

3. The sulfuric acid waste gas capturing and treating sulfuric acid mist device according to claim 1, characterized in that: A spoiler (213) is fixed on the surface of the flow dividing pipe (211).

4. A sulfuric acid mist device for capturing and treating sulfuric acid waste gas according to claim 1, characterized in that: The positions of the first nozzles (106) on the surfaces of the second annular pipe (105) and the first annular pipe (104) are staggered.

5. The sulfuric acid waste gas capturing and treating sulfuric acid mist device according to claim 1, characterized in that: The bottom of the first processing tank (101) is connected to a first liquid discharge valve (108). The bottom of the second processing tank (201) is connected to a second liquid discharge valve (216). A liquid guiding shell (107) is fixed at the bottom of the inner wall of the first processing tank (101).

6. The sulfuric acid waste gas capturing and treating sulfuric acid mist device according to claim 1, wherein: A check valve (111) is installed on the surface of the first air delivery pipe (110).

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