Efficient acid-base neutralization spraying circulation system

Abstract

The utility model discloses an efficient acid-base neutralization spray circulating system in the technical field of coating furnaces, which comprises a spray tower, liquid ring pumps are mounted on two sides of the spray tower, a tail gas outlet is arranged at the upper end of the spray tower, a Pall ring and a spray position are mounted in the spray tower, and the Pall ring and the spray position are positioned below the tail gas outlet; according to the scheme, acid gas is sprayed from the top end of the spraying tower by increasing the volume of the spraying tower and using a large-flow circulating pump to increase the spraying flow of alkali liquor, tail gas is neutralized through a Pall ring and spraying of the alkali liquor, then water flows downwards, meanwhile, the tail gas is discharged from a tail gas outlet after being neutralized, and liquid flows back to an alkali liquor barrel through an overflow port in the bottom of the spraying tower; meanwhile, a float flowmeter and a PH meter are arranged, so that the PH value and flow of alkali liquor can be monitored, and it is guaranteed that acid-base neutralization is more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of coating furnaces, in particular to a highly efficient acid-base neutralization spray circulation system. Background Art

[0002] During the operation of the coating furnace, exhaust gas is generated, which may contain volatile organic compounds (VOCs), particulate matter and other harmful gases, posing potential risks to the environment and human health. Therefore, exhaust gas treatment is a very important part of the coating furnace equipment to ensure that the emissions meet environmental standards. Although the existing coating furnace exhaust gas treatment module has alkaline liquid to neutralize the acidic gas, the neutralization efficiency is low. After the exhaust gas is discharged, it is still necessary to add an extremely efficient and bulky external spray tower, which is costly and requires repeated investment. To this end, we propose an efficient acid-base neutralization spray circulation system. Utility Model Content

[0003] The purpose of the utility model is to provide an efficient acid-base neutralization spray circulation system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an efficient acid-base neutralization spray circulation system, comprising a spray tower, liquid ring pumps are installed on both sides of the spray tower, an exhaust gas outlet is arranged at the upper end of the spray tower, a ball ring and a spray point are installed inside the spray tower, the ball ring and the spray point are both located below the exhaust gas outlet, and the spray point is located above the ball ring, a circulation pump and an alkali liquid cylinder are installed on both sides of the spray tower, the circulation pump and the alkali liquid cylinder are connected to the spray point through a pipeline, a heat exchanger is installed on both sides of the spray tower, an overflow port is arranged at the bottom of the spray tower, and the alkali liquid is further cooled and refluxed to the alkali liquid cylinder through the overflow port, and the overflow port and the alkali liquid cylinder are connected.

[0005] Preferably, a float flowmeter is installed on the surface of the spray tower.

[0006] Preferably, a pH meter is installed on the surface of the spray tower.

[0007] Preferably, the alkali liquid cylinder is connected to the liquid ring pump through a pipeline.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the solution increases the volume of the spray tower, uses a large-flow circulation pump to increase the alkali solution spray flow rate, sprays acidic gas from the top of the spray tower, and the tail gas is neutralized through the ball ring and alkali solution spray, and then water flows downward, and at the same time, the tail gas is discharged from the tail gas outlet after neutralization treatment, and the liquid flows through the overflow port at the bottom of the spray tower and flows back to the alkali solution cylinder, thereby realizing the circulation work of the spray system, and is equipped with a float flowmeter and a pH meter, which can monitor the pH value and flow rate of the alkali solution to ensure more efficient acid-base neutralization. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] In the figure: 1. Spray tower; 2. Liquid ring pump; 3. Circulation pump; 4. Alkali liquid cylinder; 5. Ball ring; 6. Exhaust gas outlet; 7. Spray point; 8. Overflow port; 9. Heat exchanger; 10. Float flowmeter; 11. pH meter. DETAILED DESCRIPTION

[0011] Example

[0012] See also Figure 1 , the utility model provides a technical solution:

[0013] A highly efficient acid-base neutralization spray circulation system, wherein both sides of the spray tower 1 are provided with liquid ring pumps 2, which are used to draw and discharge tail gas into the interior of the spray tower 1, so as to facilitate the subsequent neutralization treatment of the tail gas. A tail gas outlet 6 is provided at the upper end of the spray tower 1, and the tail gas outlet 6 is used to discharge the neutralized tail gas. At the same time, a ball ring 5 and a spraying place 7 are installed inside the spray tower 1, and the ball ring 5 and the spraying place 7 are both located below the tail gas outlet 6, and the spraying place 7 is located above the ball ring 5. At the same time, a circulation pump 3 and an alkali liquid cylinder 4 are installed on both sides of the spray tower 1, and the circulation pump 3 and the alkali liquid cylinder 4 are connected to the spraying place 7 through a pipeline. After the tail gas further enters the interior of the spray tower 1, the circulation pump 3 is turned on to pump the alkali liquid in the alkali liquid cylinder 4 to the spraying place 7 and spray it out, and the tail gas is neutralized by the ball ring 5 and the alkali liquid spray, and the water flows downward, so that the tail gas is further discharged from the tail gas outlet 6 after the neutralization treatment. At the same time, heat exchangers 9 are installed on both sides of the spray tower 1. After the alkali liquid is sprayed out from the inside of the spray tower 1, it will enter the heat exchanger 9 for cooling and flow back to the middle cylinder of the spray tower 1. At the same time, an overflow port 8 is provided at the bottom of the spray tower 1, and the overflow port 8 is connected to the alkali liquid cylinder 4, so that the alkali liquid can flow back to the alkali liquid cylinder 4 through the overflow port 8 after further cooling, so as to realize the recycling of the alkali liquid.

[0014] A float flowmeter 10 and a pH meter 11 are also installed on the surface of the spray tower 1. The pH value and flow rate of the alkali solution can be monitored by the float flowmeter 10 and the pH meter 11 to ensure more efficient acid-base neutralization.

[0015] The liquid ring pump 2 requires cooled alkali liquid as a working liquid, so the alkali liquid cylinder 4 is also connected to the liquid ring pump 2 through a pipeline, so that the alkali liquid in the alkali liquid cylinder 4 can be used for the liquid ring pump 2 to work.

[0016] This solution increases the volume diameter of the spray tower 1 to 500mm and the height to 1350mm, uses a large-flow circulation pump 3 to increase the alkali solution spray flow rate, sprays acidic gas from the top, and the liquid flows back to the alkali solution cylinder 4 through the overflow port 8 at the bottom of the spray tower 1, thereby realizing the circulation of the spray system. At the same time, a float flowmeter 10 and a pH meter 11 are equipped to ensure the alkali solution spraying effect.

[0017] The float flowmeter 10 can be changed into a built-in flowmeter.

Claims

1. An efficient acid-base neutralization spray circulation system, comprising a spray tower (1), a liquid ring pump (2) is installed on both sides of the spray tower (1), and an exhaust gas outlet (6) is arranged at the upper end of the spray tower (1), characterized in that: A ball ring (5) and a spraying point (7) are installed inside the spray tower (1). The ball ring (5) and the spraying point (7) are both located below the exhaust gas outlet (6), and the spraying point (7) is located above the ball ring (5). A circulation pump (3) and an alkali liquid cylinder (4) are installed on both sides of the spray tower (1). The circulation pump (3) and the alkali liquid cylinder (4) are connected to the spraying point (7) through a pipeline. A heat exchanger (9) is installed on both sides of the spray tower (1). An overflow port (8) is provided below the spray tower (1), so that the alkali liquid is further cooled and then flows back to the alkali liquid cylinder (4) through the overflow port (8). The overflow port (8) is connected to the alkali liquid cylinder (4).

2. An efficient acid-base neutralization spray circulation system according to claim 1, characterized in that: A float flowmeter (10) is installed on the surface of the spray tower (1).

3. The efficient acid-base neutralization spray circulation system according to claim 1, characterized in that: A pH meter (11) is installed on the surface of the spray tower (1).

4. The efficient acid-base neutralization spray circulation system according to claim 1, characterized in that: The alkali liquid cylinder (4) is connected to the liquid ring pump (2) via a pipeline.

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