Acid-base spray tower for industrial waste gas treatment

Abstract

The invention relates to the technical field of industrial waste gas treatment, in particular to an acid-base spray tower for industrial waste gas treatment, which comprises a tower body, a gas inlet pipe communicated with the bottom of the front end of the tower body, a flange plate fixed at the front end of the gas inlet pipe, a gas outlet pipe communicated with the upper end of the tower body and visible material windows detachably mounted at the left end and the right end of the tower body. According to the spray tower, the interior of the spray tower is equally divided into two treatment cavities, namely the acid liquid cavity and the alkali liquid cavity through the middle partition plate, and meanwhile, the gas adjusting seat, the upper gas cavity, the lower gas cavity, the servo motor and the plugging block are arranged in the gas inlet pipe, so that a single tower body can be used for selectively spraying and neutralizing acidic or alkaline waste gas; according to the spray tower, the overall occupied area of the spray tower is effectively reduced, and meanwhile, the cost of chemicals, electric energy, personnel and equipment input cost in waste gas treatment is also effectively reduced, so that the energy-saving property and functionality of the spray tower in actual work are improved, and the current use requirements of energy conservation, environment friendliness and high efficiency in industrial waste gas treatment are met.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial waste gas treatment, and particularly to an acid-base spray tower for industrial waste gas treatment. Background Art

[0002] Industrial waste gas treatment refers to the work of pre-treating the waste gas generated in industrial sites such as factories and workshops before discharging it externally to meet the national standards for external waste gas discharge.

[0003] At present, most of the spray towers used in industrial waste gas treatment are only suitable for the neutralization treatment of waste gas of a single nature (acidic waste gas or alkaline waste gas). When comprehensive treatment of waste gas is required, two spray tower gas paths need to be connected in series. One spray tower sprays alkaline spray liquid to remove acidic waste gas and neutral waste gas in the waste gas, and the other spray tower sprays acidic spray liquid to remove alkaline waste gas and neutral waste gas in the waste gas. This easily leads to an increase in the overall volume and floor area of the spray tower, as well as an increase in the costs of agents, electric energy, personnel, and equipment investment in waste gas treatment, and cannot meet the current energy-saving, green, and efficient usage requirements of industrial waste gas treatment.

[0004] In view of this, it is particularly important to design and manufacture a spray tower structure with a compact overall structure that is applicable to the comprehensive spray neutralization treatment of acid-base waste gas and is used in the process of industrial waste gas treatment. Summary of the Invention

[0005] The purpose of the present invention is to provide an acid-base spray tower for industrial waste gas treatment to solve the problems that the traditional spray tower for industrial waste gas treatment has a large overall volume and occupied area, is not conducive to the installation and use of small and medium-sized factories, and has a high cost input for comprehensive neutralization treatment of acid-base waste gas.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: An acid-base spray tower for industrial waste gas treatment, comprising a tower body, an air inlet pipe connected to the bottom of the front end of the tower body, a flange fixed at the front end of the air inlet pipe, an air outlet pipe connected to the upper end of the tower body, and visible material windows detachably installed on the left and right ends of the tower body. A middle partition that divides the inner cavity of the tower body into two equal parts is fixedly connected to the middle of the inner side of the tower body. An acid liquid chamber and an alkaline liquid chamber are respectively arranged on the left and right sides of the middle partition inside the tower body. Two grids are installed on the inner sides of the acid liquid chamber and the alkaline liquid chamber, and a packing layer is filled above the grids. An air regulating part for selectively allowing the waste gas to enter the acid liquid chamber or the alkaline liquid chamber is arranged inside the air inlet pipe. A liquid supply part for the treatment liquid to circulate and flow from top to bottom inside the tower body is arranged between the inside of the tower body and the rear end of the tower body.

[0007] As a further description of the above technical solution: The air regulating part includes an air regulating seat rotatably installed in the middle of the inner side of the intake pipe, a servo motor installed at the upper end of the intake pipe and drivingly connected to the air regulating seat, an upper air chamber opened in the upper half area of the air regulating seat and inclined towards the acid solution chamber, a lower air chamber opened in the lower half area of the air regulating seat and inclined towards the alkali solution chamber, and a PH sensor installed on the inner side of the intake pipe and in front of the air regulating seat.

[0008] As a further description of the above technical solution: The included angle between the upper air chamber and the middle partition and the included angle between the lower air chamber and the middle partition are both set to 30°.

[0009] As a further description of the above technical solution: Sealing blocks that fit against the outer wall of the air regulating seat are installed on both the left and right sides inside the intake pipe.

[0010] As a further description of the above technical solution: The liquid supply part includes an alkaline medicine tank installed at the rear end of the tower body and behind the alkali solution chamber, a first water pump installed above the alkaline medicine tank, a first liquid inlet pipe installed between the inside of the alkali solution chamber and above the packing layer and communicating with the first water pump, an acidic medicine tank installed at the rear end of the tower body and behind the acid solution chamber, a second water pump installed above the acidic medicine tank, a second liquid inlet pipe installed between the inside of the acid solution chamber and above the packing layer and communicating with the second water pump, and a plurality of atomizing nozzles installed at equal intervals at the ends of the first liquid inlet pipe and the second liquid inlet pipe.

[0011] As a further description of the above technical solution: Return pipes penetrating the rear end of the tower body are connected to the front ends of the alkaline medicine tank and the acidic medicine tank, and a filter cover covering the front end of the return pipe is installed at the front end of the return pipe.

[0012] As a further description of the above technical solution: A microcomputer controller is installed in the middle of the front end of the tower body. The output end of the PH sensor is electrically connected to the input end of the microcomputer controller, and the output end of the microcomputer controller is electrically connected to the input ends of the demister, the first water pump, the second water pump, and the servo motor respectively.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, the interior of the spray tower is evenly divided into two treatment chambers, namely an acid solution chamber and an alkali solution chamber, by a central partition. Meanwhile, an air regulating seat, an upper air chamber, a lower air chamber, a servo motor and a sealing block are arranged in the intake pipe. When the waste gas enters the interior of the intake pipe, the PH sensor can detect the PH value of the waste gas in real time. When it is detected that the waste gas is neutral, the waste gas in the intake pipe can enter the acid solution chamber and the alkali solution chamber respectively through the upper air chamber and the lower air chamber for spraying; when it is detected that the waste gas is alkaline, the microcomputer controller can control the servo motor to drive the air regulating seat to rotate counterclockwise by 60°. At this time, the lower air chamber can be rotated and adjusted to face the acid solution chamber, and the lower air chamber is rotated and adjusted between the two sealing blocks; when the waste gas is acidic, the microcomputer controller can control the servo motor to drive the air regulating seat to rotate clockwise by 60°. At this time, the upper air chamber can be rotated and adjusted to face the alkali solution chamber, and the lower air chamber is rotated and adjusted between the two sealing blocks; thus, the corresponding treatment chamber can be adjusted according to the PH situation of the waste gas for subsequent spraying purification or spraying neutralization treatment. This structure enables a single tower body to selectively spray and neutralize acidic or alkaline waste gas, effectively reducing the overall occupied volume of the spray tower. At the same time, it also effectively reduces the costs of agents, electric energy, personnel and equipment investment in waste gas treatment, thereby improving the energy-saving performance and functionality of the actual operation of the spray tower and meeting the current usage requirements of industrial waste gas treatment for energy conservation, greenness and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of an acid-base spray tower for industrial waste gas treatment proposed by the present invention; Figure 2 is a schematic rear view in three dimensions of the present invention; Figure 3 is a longitudinal sectional view of the tower body in the present invention; Figure 4 is a schematic structural diagram of the regulating seat in its normal state in the present invention; Figure 5 is a schematic structural diagram of the regulating seat rotated counterclockwise by 60° in the present invention; Figure 6 is a schematic structural diagram of the regulating seat rotated clockwise by 60° in the present invention; Figure 7 is a circuit connection control flow block diagram of the present invention.

[0015] Legend: 1. Tower body; 101. Inlet pipe; 102. Flange; 103. Outlet pipe; 104. Visual material window; 105. Acid liquid chamber; 106. Alkali liquid chamber; 2. Middle partition board; 3. Grille; 4. Packing layer; 5. Demister; 6. Alkaline reagent tank; 601. First water pump; 602. First liquid inlet pipe; 7. Acidic reagent tank; 701. Second water pump; 702. Second liquid inlet pipe; 8. Atomizing nozzle; 9. Air regulating seat; 901. Upper air chamber; 902. Lower air chamber; 10. Servo motor; 11. Return liquid pipe; 12. Filter cover; 13. Microcomputer controller; 14. PH sensor; 15. Plugging block. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-7 , the present invention provides a technical solution: an acid-base spray tower for industrial waste gas treatment, including a tower body 1, an inlet pipe 101 connected to the bottom of the front end of the tower body 1, a flange 102 fixed to the front end of the inlet pipe 101, an outlet pipe 103 connected to the upper end of the tower body 1, and a visual material window 104 detachably installed on the left and right ends of the tower body 1. A middle partition board 2 that divides the inner cavity of the tower body 1 into two equal parts is fixedly connected to the middle of the inner side of the tower body 1. An acid liquid chamber 105 and an alkali liquid chamber 106 are respectively arranged on the left and right sides of the middle partition board 2 inside the tower body 1. Two grilles 3 are installed on the inner sides of the acid liquid chamber 105 and the alkali liquid chamber 106. A packing layer 4 is filled above the grilles 3. An air regulating part for selectively allowing waste gas to enter the acid liquid chamber 105 or the alkali liquid chamber 106 is arranged inside the inlet pipe 101. A liquid supply part for treating liquid to circulate and flow from top to bottom inside the tower body 1 is arranged between the inside of the tower body 1 and the rear end of the tower body 1.

[0018] Specifically, as Figure 1 , Figure 4 , Figure 5 and Figure 6 shown, the air regulating part includes an air regulating seat 9 rotatably installed in the middle of the inner side of the inlet pipe 101, a servo motor 10 installed at the upper end of the inlet pipe 101 and drivingly connected to the air regulating seat 9, an upper air chamber 901 opened in the upper half area of the air regulating seat 9 and inclined towards the acid liquid chamber 105, a lower air chamber 902 opened in the lower half area of the air regulating seat 9 and inclined towards the alkali liquid chamber 106, and a PH sensor 14 installed inside the inlet pipe 101 and in front of the air regulating seat 9.

[0019] Among them, the included angles between the upper air chamber 901 and the middle partition 2 and between the lower air chamber 902 and the middle partition 2 are both set to 30°, which can make the included angle between the upper air chamber 901 and the lower air chamber 902 be 60°. When the air regulating seat 9 rotates counterclockwise or clockwise by 60°, the lower air chamber 902 or the upper air chamber 901 can be individually adjusted to face the acid solution chamber 105 or the alkali solution chamber 106, so as to realize the guiding control operation of the waste gas discharge chamber. Sealing blocks 15 that fit the outer wall of the air regulating seat 9 are installed on both the left and right sides inside the intake pipe 101, which can seal the connection gap between the intake pipe 101 and the air regulating seat 9 to prevent waste gas from entering the tower body 1 through the gap.

[0020] Specifically, as Figures 1-6 shown, the liquid supply part includes an alkaline reagent tank 6 installed at the rear end of the tower body 1 and behind the alkali solution chamber 106, a first water pump 601 installed above the alkaline reagent tank 6, a first liquid inlet pipe 602 installed between the inside of the alkali solution chamber 106 and above the packing layer 4 and communicating with the first water pump 601, an acidic reagent tank 7 installed at the rear end of the tower body 1 and behind the acid solution chamber 105, a second water pump 701 installed above the acidic reagent tank 7, a second liquid inlet pipe 702 installed between the inside of the acid solution chamber 105 and above the packing layer 4 and communicating with the second water pump 701, and a plurality of atomizing nozzles 8 installed at equal intervals at the ends of the first liquid inlet pipe 602 and the second liquid inlet pipe 702, which can spray the sprayed liquid of the first liquid inlet pipe 602 or the second liquid inlet pipe 702 into the alkali solution chamber 106 or the acid solution chamber 105 evenly in an atomized state.

[0021] Among them, during the actual use process, according to the actual waste gas treatment scenario and requirements, sodium hydroxide solution or other alkaline solutions can be selected as the alkaline spraying liquid and added to the alkaline reagent tank 6, and dilute sulfuric acid solution or other acidic solutions can be selected as the acidic spraying liquid and added to the acidic reagent tank 7.

[0022] Among them, the front ends of the alkaline reagent tank 6 and the acidic reagent tank 7 are both connected with a return pipe 11 that penetrates the rear end of the tower body 1, which can circularly guide and return the acidic spraying liquid or the alkaline spraying liquid sprayed below the tower body 1 to the acidic reagent tank 7 or the alkaline reagent tank 6. A filter cover 12 covering the front end of the return pipe 11 is installed at the front end of the return pipe 11, which can filter the acidic spraying liquid or the alkaline spraying liquid entering the return pipe 11 to prevent solid impurities from entering the alkaline reagent tank 6 or the acidic reagent tank 7.

[0023] Specifically, as Figures 1-7As shown in the figure, a microcomputer controller 13 is installed in the middle of the front end of the tower body 1. The output end of the PH sensor 14 is electrically connected to the input end of the microcomputer controller 13. The output end of the microcomputer controller 13 is respectively electrically connected to the input ends of the demister 5, the first water pump 601, the second water pump 701 and the servo motor 10. The PH sensor 14 can collect the PH value of the waste gas entering the intake pipe 101 in real time, and transmit the PH value to the microcomputer controller 13 in real time for calculation, comparison and analysis, and then control the demister 5, the first water pump 601, the second water pump 701 and the servo motor 10 to perform corresponding operations. Among them, the setting of the microcomputer controller 13, on the one hand, can automatically control the demister 5, the first water pump 601, the second water pump 701 and the servo motor 10 to work according to the corresponding program according to the PH value situation, and on the other hand, it is convenient for the operator to adjust the working parameters of the spray tower.

[0024] Working principle: During use, connect the tower body 1 to the waste gas treatment pipeline through the intake pipe 101 and the outlet pipe 103, and connect the control circuit of the spray tower to the background control terminal. During actual use, the operator can set the working parameters of the spray tower through the microcomputer controller 13. The waste gas in the waste gas treatment pipeline can enter the intake pipe 101 in advance. The pH sensor 14 on the intake pipe 101 can collect the pH value data of the waste gas entering the intake pipe 101 in real time, and transmit the pH data to the microcomputer controller 13 in real time for calculation, comparison and analysis. When it is detected that the waste gas is neutral (pH value equal to 7), the microcomputer controller 13 can control the first water pump 601, the second water pump 701 and the servo motor 10 to work according to the set program. In order to improve the efficiency of waste gas spray purification treatment, the servo motor 10 can adjust the air regulating seat 9 to the center position. At this time, the upper air chamber 901 on the air regulating seat 9 can face the acid liquid chamber 105, and the lower air chamber 902 on the air regulating seat 9 can face the alkali liquid chamber 106. At this time, the waste gas can be split and enter the acid liquid chamber 105 and the alkali liquid chamber 106 respectively. When the first water pump 601 works, it can pump the alkali liquid spray liquid in the alkaline medicine box 6, transport the alkali liquid spray liquid into the first liquid inlet pipe 602, and then evenly spray it into the alkali liquid chamber 106 through the atomizing nozzle 8 to spray and purify the neutral waste gas entering the alkali liquid chamber 106. At the same time, when the second water pump 701 works, it can pump the acid liquid spray liquid in the acidic medicine box 7, transport the acidic spray liquid into the second liquid inlet pipe 702, and evenly spray it into the acid liquid chamber 105 through the atomizing nozzle 8 to spray and purify the neutral waste gas entering the acid liquid chamber 105. When it is detected that the waste gas is acidic (pH less than 7), the microcomputer controller 13 can control the first water pump 601 and the servo motor 10 to work. The servo motor 10 can drive the air regulating seat 9 to rotate clockwise by 60°. At this time, the upper air chamber 901 on the air regulating seat 9 can be rotated and adjusted to face the alkali liquid chamber 106, and the lower air chamber 902 on the air regulating seat 9 can be rotated and adjusted between the two blocking blocks 15. At the same time, when the first water pump 601 works, it can circulate and spray the alkaline spray liquid in the alkaline medicine box 6 into the alkali liquid chamber 106 through the atomizing nozzle 8 to spray and neutralize the acidic waste gas entering the alkali liquid chamber 106;When it is detected that the exhaust gas is alkaline (pH greater than 7), the microcomputer controller 13 can control the second water pump 701 and the servo motor 10 to work. The servo motor 10 can drive the air regulating seat 9 to rotate counterclockwise by 60° as a whole. At this time, the lower air chamber 902 on the air regulating seat 9 can rotate and adjust its orientation towards the acid liquid chamber 105, and the upper air chamber 901 on the air regulating seat 9 can rotate and adjust to between the two blocking blocks 15. At the same time, when the second water pump 701 works, the acidic spraying liquid in the acidic chemical agent tank 7 can be circulated and sprayed into the acid liquid chamber 105 through the atomizing nozzle 8 to spray and neutralize the alkaline exhaust gas entering the acid liquid chamber 105. The exhaust gas after comprehensive treatment can enter the outlet pipe 103 upward through the demister 5 and be discharged from the tower body 1, thus completing the selective spraying purification and spraying neutralization treatment of the exhaust gas.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. An acid-base spray tower for industrial waste gas treatment, comprising a tower body (1), an air inlet pipe (101) connected to the bottom of the front end of the tower body (1), a flange plate (102) fixed to the front end of the air inlet pipe (101), an air outlet pipe (103) connected to the upper end of the tower body (1), and a visual material window (104) detachably installed on the left and right ends of the tower body (1), characterized in that, A central partition (2) is fixedly connected to the middle of the inner side of the tower body (1) and divides the inner cavity of the tower body (1) into two halves. An acid liquid chamber (105) and an alkaline liquid chamber (106) are respectively provided on the left and right sides of the central partition (2) inside the tower body (1). Two grilles (3) are installed on the inner sides of the acid liquid chamber (105) and the alkaline liquid chamber (106). A filler layer (4) is filled above the grilles (3). An air regulating portion for selectively allowing waste gas to enter the acid liquid chamber (105) or the alkaline liquid chamber (106) is provided on the inner side of the air inlet pipe (101). A liquid supply portion for circulating the treatment liquid in the tower body (1) from top to bottom is provided between the interior of the tower body (1) and the rear end of the tower body (1).

2. The acid-base spray tower for industrial waste gas treatment according to claim 1, characterized in that, The gas regulating portion comprises a gas regulating seat (9) rotatably mounted on the middle portion of the inner side of the air inlet pipe (101), a servo motor (10) mounted on the upper end of the air inlet pipe (101) and transmission-connected to the gas regulating seat (9), an upper gas cavity (901) opened in the upper half of the gas regulating seat (9) and tilted toward the acid liquid cavity (105), a lower gas cavity (902) opened in the lower half of the gas regulating seat (9) and tilted toward the alkali liquid cavity (106), and a pH sensor (14) mounted on the inner side of the air inlet pipe (101) and located in front of the gas regulating seat (9).

3. The acid-base spray tower for industrial waste gas treatment according to claim 2, wherein, The angle between the upper air cavity (901) and the middle partition (2) and the angle between the lower air cavity (902) and the middle partition (2) are both 30°.

4. The acid-base spray tower for industrial waste gas treatment according to claim 2, characterized in that, Sealing blocks (15) that fit against the outer wall of the air regulating seat (9) are installed on both the left and right sides of the interior of the air inlet pipe (101).

5. The acid-base spray tower for industrial waste gas treatment according to claim 1, wherein, The liquid supply part comprises an alkaline agent box (6) installed at the rear end of the tower body (1) and located behind the alkaline liquid chamber (106), a first water pump (601) installed above the alkaline agent box (6), a first liquid inlet pipe (602) installed between the inside of the alkaline liquid chamber (106) and above the packing layer (4) and connected to the first water pump (601), an acid agent box (7) installed at the rear end of the tower body (1) and located behind the acid liquid chamber (105), a second water pump (701) installed above the acid agent box (7), a second liquid inlet pipe (702) installed between the inside of the acid liquid chamber (105) and above the packing layer (4) and connected to the second water pump (701), and a plurality of atomizing nozzles (8) installed at equal distances at the ends of the first liquid inlet pipe (602) and the second liquid inlet pipe (702).

6. The acid-base spray tower for industrial waste gas treatment according to claim 5, characterized in that, The front ends of the alkaline agent tank (6) and the acid agent tank (7) are both connected to a liquid return pipe (11) that passes through the rear end of the tower body (1), and the front ends of the liquid return pipes (11) are equipped with a filter cover (12) that covers the front ends of the liquid return pipes (11).

7. An acid-base spray tower for industrial waste gas treatment according to claim 2, characterized in that, A microcomputer controller (13) is installed in the middle of the front end of the tower body (1), the output end of the pH sensor (14) is electrically connected to the input end of the microcomputer controller (13), and the output end of the microcomputer controller (13) is electrically connected to the input ends of the demister (5), the first water pump (601), the second water pump (701) and the servo motor (10).

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