Water washing type waste gas treatment device

Abstract

The utility model discloses a water washing type waste gas treatment device, which comprises a gas inlet, a gas outlet, a bottom water washing tower and an upper water washing tower, the gas inlet is arranged at one end of the bottom water washing tower, the other end of the bottom water washing tower is connected with the lower end of the upper water washing tower, the gas outlet is arranged at the upper end of the upper water washing tower, and the gas outlet is arranged at the lower end of the upper water washing tower. Waste gas is introduced into the bottom water washing tower through the gas inlet and gradually ascends into the upper water washing tower through the bottom water washing tower, and the waste gas after water washing is discharged through the gas outlet. According to the utility model, a vertical design is adopted, the bottom water washing tower and the upper water washing tower are connected in series, so that the occupied area of the equipment is reduced, the equipment is suitable for occasions with limited space, and a multi-stage spraying system and a filler layer are arranged in the equipment, so that the contact area between waste gas and water is increased, and the water washing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a water-washing type waste gas treatment device. Background Art

[0002] In modern industrial production, waste gas treatment is an important part of environmental protection. Traditional waste gas treatment methods include physical adsorption, chemical reaction and biological treatment, but these methods often have problems such as low treatment efficiency, high cost and secondary pollution. Water-washing waste gas treatment device has become a common method for industrial waste gas treatment due to its simplicity, high efficiency and economy.

[0003] The water-washing exhaust gas treatment device mainly uses water as a washing medium. Through full contact with the exhaust gas, the pollutants in the exhaust gas are transferred to the water, thereby achieving the purpose of purifying the exhaust gas. This method is suitable for treating gaseous pollutants that are soluble in water or can react chemically with water, such as acidic gases, alkaline gases and some organic matter.

[0004] However, there are some shortcomings in the traditional water-washing waste gas treatment device. The traditional water-washing waste gas treatment device is generally horizontal, with a labyrinth baffle set inside the device to make the waste gas move in a zigzag manner, and a spray device is set above the labyrinth section to spray and wash the waste gas, and then a water separator is configured at the end. This type of equipment has a large internal space. In order to ensure the water mist effect, many conical nozzles must be configured. Due to the large number of nozzles, a high-power circulating water pump is required, which has high energy consumption; therefore, the traditional water-washing waste gas treatment device has many problems such as large footprint and high cost. Utility Model Content

[0005] The purpose of the utility model is to solve the above technical problems, thereby providing a water-washing type exhaust gas treatment device;

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] The utility model provides a water-washing type waste gas treatment device.

[0008] It includes an air inlet, an air outlet, a bottom water washing tower, and an upper water washing tower. The air inlet is arranged at one end of the bottom water washing tower, and the other end of the bottom water washing tower is connected to the lower end of the upper water washing tower. The air outlet is arranged at the upper end of the upper water washing tower. The waste gas passes into the bottom water washing tower through the air inlet, and gradually rises to the upper water washing tower through the bottom water washing tower. The waste gas after water washing is discharged through the air outlet.

[0009] Optionally, a first sampling tube is provided on the side wall of the bottom water washing tower, and the first sampling tube is connected to the interior of the bottom water washing tower; a second sampling tube is provided on the side wall of the upper water washing tower, and the second sampling tube is connected to the interior of the bottom water washing tower; a third sampling tube is provided on the side wall of the air outlet, and the side wall of the third sampling tube is connected to the interior of the air outlet.

[0010] Optionally, the air inlet is provided with a gas flow rate control device for adjusting the speed at which the exhaust gas passes through the bottom water washing tower.

[0011] Optionally, the gas outlet is connected to a demister, and the demister is used to remove moisture from the exhaust gas.

[0012] Optionally, a multi-stage spray system is provided in the bottom water washing tower, and the spray system includes a plurality of nozzles, and the nozzles are evenly distributed along the height direction of the bottom water washing tower, and are used for evenly washing the passing exhaust gas.

[0013] Optionally, a packing layer is provided in the upper water washing tower, and the packing layer is used to increase the contact area between the exhaust gas and water to improve the water washing efficiency.

[0014] Optionally, a gas-liquid separator is provided between the bottom water washing tower and the upper water washing tower, and the gas-liquid separator is used to separate water droplets and gas in the exhaust gas to prevent the water droplets from being discharged with the gas.

[0015] Beneficial effects of the utility model

[0016] The utility model adopts a vertical design, and the bottom water washing tower and the upper water washing tower are arranged in series, so that the equipment occupies a small area and is suitable for occasions with limited space. In addition, a multi-stage spray system and a packing layer are built in, which increases the contact area between the exhaust gas and water, improves the water washing efficiency, and makes the exhaust gas cleaned more thoroughly. Due to the optimization of the structure and the improvement of efficiency, the dependence on the high-power circulating water pump is correspondingly reduced, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the structure of the utility model.

[0018] Figure 2 It is a cross-sectional view of the upper water washing tower structure of the utility model.

[0019] Explanation of the reference numerals: 1-air inlet, 2-air outlet, 3-bottom water washing tower, 4-upper water washing tower, 5-first sampling tube, 6-second sampling tube, 7-third sampling tube, 8-packing layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] like Figure 1-Figure 2 As shown, the utility model provides a water-washing type waste gas treatment device.

[0023] It includes an air inlet 1, an air outlet 2, a bottom water washing tower 3, and an upper water washing tower 4, wherein the air inlet 1 is arranged at one end of the bottom water washing tower 3, the other end of the bottom water washing tower 3 is connected to the lower end of the upper water washing tower 4, and the air outlet 2 is arranged at the upper end of the upper water washing tower 4, and the exhaust gas passes into the bottom water washing tower 3 through the air inlet 1, and gradually rises to the upper water washing tower 4 through the bottom water washing tower 3, and the exhaust gas after washing is discharged through the air outlet 2;

[0024] A first sampling tube 5 is provided on the side wall of the bottom water washing tower 3, and the first sampling tube 5 is connected to the interior of the bottom water washing tower 3. A second sampling tube 6 is provided on the side wall of the upper water washing tower 4, and the second sampling tube 6 is connected to the interior of the bottom water washing tower 3. A third sampling tube 7 is provided on the side wall of the gas outlet 2, and the side wall of the third sampling tube 7 is connected to the interior of the gas outlet 2.

[0025] The air inlet 1 is provided with a gas flow rate control device for adjusting the speed at which the exhaust gas passes through the bottom water washing tower 3 .

[0026] The gas outlet 2 is connected to a demister, and the demister is used to remove moisture from the exhaust gas.

[0027] The bottom water washing tower 3 is provided with a multi-stage spraying system, which includes a plurality of spray heads, and the spray heads are evenly distributed along the height direction of the bottom water washing tower 3, and are used for evenly washing the passing exhaust gas.

[0028] A packing layer 8 is provided in the upper water washing tower 4, and the packing layer 8 is used to increase the contact area between the exhaust gas and water to improve the water washing efficiency.

[0029] A gas-liquid separator is provided between the bottom water washing tower 3 and the upper water washing tower 4, and the gas-liquid separator is used to separate water droplets and gas in the exhaust gas to prevent the water droplets from being discharged with the gas.

[0030] The utility model comprises the following steps during use:

[0031] Starter:

[0032] Start the gas flow rate control device, adjust it to the appropriate exhaust gas flow rate, turn on the spray system, and ensure that the nozzle can spray water mist evenly.

[0033] Exhaust gas treatment:

[0034] The waste gas enters the bottom water washing tower 3 through the air inlet 1. In the bottom water washing tower 3, the waste gas is evenly washed by a multi-stage spray system to remove most of the soluble pollutants. The washed waste gas rises to the gas-liquid separator to separate the water droplets to prevent them from being discharged with the gas.

[0035] Deep Cleaning:

[0036] The cleaned gas enters the packing layer 8 of the upper water scrubber 4. The packing layer 8 increases the contact area between the waste gas and water, thereby improving the cleaning efficiency. In the upper water scrubber 4, the waste gas further contacts water through the packing layer 8 to remove the remaining pollutants.

[0037] Demisting and water removal:

[0038] The exhaust gas passes through the demister connected to the gas outlet 2 to remove moisture from the exhaust gas, ensuring that the demister works well and moisture in the exhaust gas is effectively removed.

[0039] Exhaust clean gas:

[0040] The clean exhaust gas is tested to ensure that the pollutant content meets the emission standards, and the clean exhaust gas is discharged into the atmosphere through the outlet 2.

[0041] The waste gas of the present application first enters the device through the air inlet 1 provided with a gas flow rate control device. The control device can adjust the waste gas flow rate to ensure that the waste gas passes through the water scrubber at an appropriate speed so as to more effectively remove pollutants.

[0042] After the exhaust gas enters the bottom water washing tower 3, it will encounter a multi-stage spray system. These nozzles are evenly distributed along the height of the tower to evenly wash the exhaust gas and effectively remove soluble pollutants in the exhaust gas.

[0043] The waste gas treated by the bottom water washing tower 3 then enters the area provided with a gas-liquid separator. The gas-liquid separator separates the water droplets and gas in the waste gas to prevent the water droplets from being discharged with the gas, thereby improving the water washing efficiency.

[0044] The cleaned gas enters the upper water washing tower 4, in which a packing layer 8 is arranged to increase the contact area between the waste gas and water, thereby further improving the water washing efficiency.

[0045] Finally, the washed exhaust gas passes through a demister connected to the air outlet 2 to remove moisture from the exhaust gas, and then is discharged through the air outlet 2.

[0046] The utility model adopts a vertical design, and the bottom water washing tower 3 and the upper water washing tower 4 are arranged in series, so that the equipment covers a small area and is suitable for occasions with limited space. In addition, a multi-stage spray system and a packing layer 8 are built in, which increases the contact area between the exhaust gas and water, improves the water washing efficiency, and makes the exhaust gas cleaned more thoroughly. Due to the optimization of the structure and the improvement of efficiency, the dependence on the high-power circulating water pump is correspondingly reduced, thereby reducing energy consumption.

[0047] The present application is provided with three sampling tubes, which are convenient for monitoring and analyzing each stage of the waste gas treatment process, and help to adjust the operating parameters in time to ensure the treatment effect. A gas-liquid separator is arranged between the bottom water washing tower 3 and the upper water washing tower 4 to effectively prevent water droplets from being discharged with the gas, thereby improving the quality of waste gas treatment. The gas flow rate control device at the air inlet 1 and the demister at the air outlet 2 make the waste gas treatment process more accurate and efficient.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A water-washing exhaust gas treatment device, characterized in that: It includes an air inlet, an air outlet, a bottom water washing tower, and an upper water washing tower. The air inlet is arranged at one end of the bottom water washing tower, and the other end of the bottom water washing tower is connected to the lower end of the upper water washing tower. The air outlet is arranged at the upper end of the upper water washing tower. The waste gas passes into the bottom water washing tower through the air inlet, and gradually rises to the upper water washing tower through the bottom water washing tower. The waste gas after water washing is discharged through the air outlet.

2. A water-washing exhaust gas treatment device according to claim 1, characterized in that: A first sampling tube is provided on the side wall of the bottom water washing tower, and the first sampling tube is connected to the interior of the bottom water washing tower. A second sampling tube is provided on the side wall of the upper water washing tower, and the second sampling tube is connected to the interior of the bottom water washing tower. A third sampling tube is provided on the side wall of the gas outlet, and the side wall of the third sampling tube is connected to the interior of the gas outlet.

3. A water-washing exhaust gas treatment device according to claim 1, characterized in that: The air inlet is provided with a gas flow rate control device for adjusting the speed at which the exhaust gas passes through the bottom water washing tower.

4. A water-washing exhaust gas treatment device according to claim 3, characterized in that: The gas outlet is connected to a demister, and the demister is used to remove moisture from the exhaust gas.

5. A water-washing exhaust gas treatment device according to claim 1, characterized in that: A multi-stage spray system is provided in the bottom water washing tower. The spray system includes a plurality of spray heads. The spray heads are evenly distributed along the height direction of the bottom water washing tower and are used for evenly washing the passing exhaust gas.

6. A water-washing exhaust gas treatment device according to claim 2, characterized in that: A packing layer is arranged in the upper water washing tower, and the packing layer is used to increase the contact area between the exhaust gas and water to improve the water washing efficiency.

7. A water-washing exhaust gas treatment device according to claim 2, characterized in that: A gas-liquid separator is provided between the bottom water washing tower and the upper water washing tower, and the gas-liquid separator is used to separate water droplets and gas in the exhaust gas to prevent the water droplets from being discharged with the gas.

Images