Tail gas treatment equipment based on dimethyl sulfoxide

Abstract

The utility model relates to the technical field of tail gas treatment, in particular to tail gas treatment equipment based on dimethyl sulfoxide, which is characterized in that a plurality of perforated plates are connected in a box body at equal intervals along the length direction, the apertures of the perforated plates are gradually increased from top to bottom, one end of a gas inlet pipe penetrates through the perforated plates, and the other end of the gas inlet pipe penetrates through a gas outlet pipe. A gap is formed between the bottom end of the air inlet pipe and the inner bottom end of the box body, a dimethyl sulfoxide solution is arranged in the box body, and the upper end of the box body is communicated with a medicine placing mechanism. Tail gas is guided into the bottom of the box body through the gas inlet pipe and moves upwards, the tail gas moving upwards makes contact with the multiple perforated plates in sequence, the apertures of the multiple perforated plates are gradually increased from top to bottom, the tail gas is gradually dispersed in the upward moving process, and the contact area of the gas and a dimethyl sulfoxide solution is increased; meanwhile, the flowing speed of the tail gas is slowed down, the reaction time of the tail gas and the dimethyl sulfoxide solution is prolonged, and the absorption effect on sulfur dioxide in the tail gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to an exhaust gas treatment device based on dimethyl sulfoxide. Background Technology

[0002] Sulfur dioxide is present in the exhaust gases of coal-fired power plants, coal-fired and gas-fired boilers, and various fuel engines. Fossil fuels such as coal and oil contain sulfur, which combines with oxygen during combustion to form sulfur dioxide.

[0003] Sulfur dioxide in exhaust gas has a strong pungent odor and can easily lead to acid rain when it reaches a certain concentration, causing soil and water acidification and affecting the growth of crops and forests. Dimethyl sulfoxide (DMSO) can absorb sulfur dioxide in exhaust gas. However, when using DMSO to absorb sulfur dioxide in exhaust gas, the exhaust gas is cooled before being introduced into the DMSO. The contact area between the exhaust gas and DMSO is small, and the exhaust gas flows quickly, resulting in a short contact time. This reduces the absorption effect of DMSO on carbon dioxide in the exhaust gas. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as small contact area between exhaust gas and dimethyl sulfoxide, high exhaust gas flow rate, and short contact time between exhaust gas and dimethyl sulfoxide, which reduces the absorption effect of dimethyl sulfoxide on carbon dioxide in exhaust gas. Therefore, this invention proposes an exhaust gas treatment device based on dimethyl sulfoxide.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a tail gas treatment device based on dimethyl sulfoxide, including a housing. The upper end of the housing is connected to an air inlet pipe, the upper end of one side of the housing is connected to an exhaust pipe, and one side of the housing is connected to an injection pipe. A plurality of perforated plates are connected at equal intervals along the length of the housing, and the diameter of the perforations on the perforated plates gradually increases from top to bottom. One end of the air inlet pipe passes through the perforated plates, and a gap is provided between the bottom end of the air inlet pipe and the bottom of the housing. The housing contains a dimethyl sulfoxide solution, and the perforated plates are located within the dimethyl sulfoxide solution. A drug dispensing mechanism is connected to the upper end of the housing.

[0007] Preferably, the dispensing mechanism includes a liquid storage tank, which is connected to the upper end of the box body, and a drip tube is connected to the bottom end of the liquid storage tank, with a solenoid valve connected to the drip tube.

[0008] Preferably, the liquid storage tank is a transparent tank.

[0009] Preferably, an airflow sensor is fixedly connected to the bottom of the liquid storage tank, an air-gathering hopper is fixedly connected inside the tank, an air inlet pipe passes through the air-gathering hopper, a dripping pipe is connected to the air-gathering hopper, and the airflow sensor is located directly above the air outlet of the air-gathering hopper.

[0010] Preferably, a cooling mechanism is fixedly connected to the housing. The cooling mechanism includes a fixed box, which is fixedly connected to the housing. A heat dissipation pipe is connected to the housing. The heat dissipation pipe is located inside the fixed box. The dimethyl sulfoxide solution is located inside the heat dissipation pipe. A cooler is fixedly connected inside the fixed box.

[0011] Preferably, the heat dissipation pipes are provided in a plurality and are distributed at equal intervals along the width direction of the housing.

[0012] The tail gas treatment device based on dimethyl sulfoxide proposed in this utility model has the following advantages:

[0013] By introducing the exhaust gas into the bottom of the housing through the intake pipe, the exhaust gas moves upward. The upward-moving exhaust gas comes into contact with several perforated plates in sequence. Since the pore size on the perforated plates gradually increases from top to bottom, the exhaust gas gradually disperses during its upward movement, increasing the contact area between the gas and the dimethyl sulfoxide solution. At the same time, it slows down the flow rate of the exhaust gas, prolongs the reaction time between the exhaust gas and the dimethyl sulfoxide solution, and improves the absorption effect of sulfur dioxide in the exhaust gas. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a tail gas treatment device based on dimethyl sulfoxide proposed in this utility model. Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a tail gas treatment device based on dimethyl sulfoxide proposed in this utility model. Figure 2 ;

[0016] Figure 3 for Figure 2 A magnified view of the structure at point A above;

[0017] Figure 4 This is a cross-sectional structural diagram of a tail gas treatment device based on dimethyl sulfoxide proposed in this utility model.

[0018] In the diagram: 1. Box body; 2. Air inlet pipe; 3. Discharge pipe; 4. Perforated plate; 5. Liquid injection pipe; 6. Drug dispensing mechanism; 7. Cooling mechanism; 61. Liquid storage tank; 62. Dropping pipe; 63. Solenoid valve; 64. Air gathering hopper; 65. Airflow sensor; 71. Fixing box; 72. Heat dissipation pipe; 73. Refrigerator. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1: Refer to Figure 1-3 A tail gas treatment device based on dimethyl sulfoxide includes a housing 1, an air inlet pipe 2 connected to the upper end of the housing 1, an exhaust pipe 3 connected to the upper end of one side of the housing 1, a liquid injection pipe 5 connected to one side of the housing 1, a plurality of perforated plates 4 connected at equal intervals along the length direction inside the housing 1, the aperture of the perforated plates 4 gradually increasing from top to bottom, one end of the air inlet pipe 2 passing through the perforated plates 4, a gap between the bottom end of the air inlet pipe 2 and the bottom end of the interior of the housing 1, a dimethyl sulfoxide solution inside the housing 1, the perforated plates 4 located in the dimethyl sulfoxide solution, and a drug dispensing mechanism 6 connected to the upper end of the housing 1.

[0021] Work process:

[0022] The exhaust gas is introduced into the bottom of the housing 1 through the intake pipe 2. After entering the housing 1, the exhaust gas comes into contact with the dimethyl sulfoxide solution. The dimethyl sulfoxide solution absorbs the sulfur dioxide in the exhaust gas. The exhaust gas moves upward and comes into contact with several perforated plates 4 in sequence. Since the pore size on the perforated plates 4 gradually increases from top to bottom, the exhaust gas is gradually dispersed during its upward movement, increasing the contact area between the gas and the dimethyl sulfoxide solution. At the same time, the flow rate of the exhaust gas is slowed down, the reaction time between the exhaust gas and the dimethyl sulfoxide solution is prolonged, and the absorption effect of sulfur dioxide in the exhaust gas is improved. The treated exhaust gas is discharged from the exhaust pipe 3.

[0023] Example 2: Refer to Figure 2-4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that the dispensing mechanism 6 includes a liquid storage tank 61, which is connected to the upper end of the box body 1. The bottom end of the liquid storage tank 61 is connected to a dripping pipe 62, and a solenoid valve 63 is connected to the dripping pipe 62. The liquid storage tank 61 is a transparent box, and an airflow sensor 65 is fixedly connected to the bottom end of the liquid storage tank 61. A gas-gathering hopper 64 is fixedly connected inside the box body 1. The air inlet pipe 2 passes through the gas-gathering hopper 64, and the dripping pipe 62 is connected to the gas-gathering hopper 64. The airflow sensor 65 is located directly above the air outlet of the gas-gathering hopper 64. The exhaust gas, after being treated with dimethyl sulfoxide solution, moves upward and enters the gas-gathering hopper 64. The exhaust gas in the gas-gathering hopper 64 is released from the outlet, and the released exhaust gas impacts the airflow sensor.

[0024] 65. After the airflow sensor 65 senses the airflow, the controller controls the solenoid valve 63 to open, and the catalyst in the storage tank 61 falls into the drip tube 62 and is released from the drip tube 62. When there is no airflow impacting the airflow sensor 65, the solenoid valve 63 is in the closed state, which can effectively save catalyst.

[0025] Example 3: Reference Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that a cooling mechanism 7 is fixedly connected to the box 1. The cooling mechanism 7 includes a fixed box 71, which is fixedly connected to the box 1. A heat dissipation pipe 72 is connected to the box 1. Several heat dissipation pipes 72 are provided and are evenly distributed along the width direction of the box 1. The heat dissipation pipes 72 are located inside the fixed box 71. The dimethyl sulfoxide solution is located inside the heat dissipation pipes 72. A cooler 73 is fixedly connected inside the fixed box 71. After the cooler 73 is started, it cools the gas inside the fixed box 71. The cold gas comes into contact with the heat dissipation pipes 72 and exchanges heat with the heat dissipation pipes 72, thereby reducing the temperature of the dimethyl sulfoxide solution inside the box 1. The low temperature of the dimethyl sulfoxide solution can improve the absorption effect of sulfur dioxide.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tail gas treatment device based on dimethyl sulfoxide, comprising a housing (1), wherein an air inlet pipe (2) is connected to the upper end of the housing (1), an exhaust pipe (3) is connected to the upper end of one side of the housing (1), and a liquid injection pipe (5) is connected to one side of the housing (1), characterized in that, in: The box (1) is connected with a number of perforated plates (4) at equal intervals along its length. The diameter of the holes on the perforated plates (4) gradually increases from top to bottom. One end of the air inlet pipe (2) passes through the perforated plates (4). There is a gap between the bottom end of the air inlet pipe (2) and the bottom end of the box (1). The box (1) contains a dimethyl sulfoxide solution. The perforated plates (4) are located in the dimethyl sulfoxide solution. The upper end of the box (1) is connected to a drug dispensing mechanism (6).

2. The tail gas treatment device based on dimethyl sulfoxide according to claim 1, characterized in that, The drug dispensing mechanism (6) includes a liquid storage tank (61), which is connected to the upper end of the box body (1). The bottom end of the liquid storage tank (61) is connected to a dripping pipe (62), and a solenoid valve (63) is connected to the dripping pipe (62).

3. The tail gas treatment device based on dimethyl sulfoxide according to claim 2, characterized in that, The liquid storage tank (61) is a transparent box.

4. The tail gas treatment device based on dimethyl sulfoxide according to claim 3, characterized in that, An airflow sensor (65) is fixedly connected to the bottom of the liquid storage tank (61). An air-gathering hopper (64) is fixedly connected inside the tank body (1). The air inlet pipe (2) passes through the air-gathering hopper (64). The dripping pipe (62) is connected to the air-gathering hopper (64). The airflow sensor (65) is located directly above the air outlet of the air-gathering hopper (64).

5. The tail gas treatment device based on dimethyl sulfoxide according to claim 1, characterized in that, A cooling mechanism (7) is fixedly connected to the housing (1). The cooling mechanism (7) includes a fixed box (71), which is fixedly connected to the housing (1). A heat dissipation pipe (72) is connected to the housing (1). The heat dissipation pipe (72) is located inside the fixed box (71). The dimethyl sulfoxide solution is located inside the heat dissipation pipe (72). A cooler (73) is fixedly connected inside the fixed box (71).

6. The tail gas treatment device based on dimethyl sulfoxide according to claim 5, characterized in that, The heat dissipation pipes (72) are provided in a plurality of them and are distributed at equal intervals along the width direction of the housing (1).

Images