CN217591176U - Dielectric barrier discharge reactor capable of reducing temperature - Google Patents

Abstract

The utility model discloses a temperature-reducing dielectric barrier discharge reactor, which comprises a reaction tube, a cooling tube, a purification tube, a high-voltage electrode and a grounding electrode. In the reaction tube, the bottom of the reaction tube is provided with a gas inlet, the ground electrode is sleeved outside the reaction tube and corresponds to the high-voltage electrode, the cooling tube is sleeved outside the ground electrode, and the cooling tube is provided with a cooling medium inlet and a cooling medium outlet; purification; There is a gas outlet at the bottom of the tube, the top of the purification tube is sealed, and the high-voltage electrode and the ground electrode are connected to the power supply; the device of the utility model solves the problem that the temperature of the reactor increases and affects the activity of the catalyst in the process of generating low-temperature plasma, and can continuously purify the gas , The device has a simple structure and is suitable for industrial production and market promotion and application.

Description

A cool-down dielectric barrier discharge reactor

technical field

The utility model belongs to the technical field of low temperature plasma, in particular to a dielectric barrier discharge reactor capable of reducing temperature.

Background technique

High-energy electrons in low-temperature plasma bombard matter molecules, which can open molecular bonds, ionize, dissociate and excite matter, triggering a series of physical and chemical reactions, and even reactions that cannot be carried out by conventional thermodynamics. received extensive attention and research. However, in the process of generating low-temperature plasma, part of the electrical energy will be converted into heat energy, which will increase the temperature of the reactor and affect the activity of the catalyst. In the process of cooperating with the catalyst to treat the target gas, other by-products will also be generated. further processing.

Utility model content

In order to overcome the problem that the temperature of the reactor increases in the process of generating low-temperature plasma, which affects the activity of the catalyst, and the gas needs to further remove by-products after the plasma is treated with the catalyst, the utility model provides a cooling medium barrier Discharge reactor, this reactor can also process the subsequent produced magazine gas.

The temperature-reducing dielectric barrier discharge reactor includes a reaction tube, a cooling tube, a purification tube, a high-voltage electrode, and a ground electrode. The upper part of the reaction tube is connected to the upper part of the purification tube through a communication tube, the discharge electrode is set in the reaction tube through a sealing plug, and the bottom of the reaction tube is set There is a gas inlet, the grounding electrode is sleeved outside the reaction tube and corresponds to the discharge electrode, the cooling pipe is sleeved outside the grounding electrode, and the cooling pipe is provided with a cooling medium inlet and a cooling medium outlet; The top of the tube is sealed, and the high voltage electrode and the ground electrode are connected to the power supply.

The ground electrode is a cylindrical electrode, and the cooling pipe is a sandwiched cylinder.

The top of the purge tube is sealed with a sealing plug.

When in use, a conventional catalyst is placed in the reaction tube and the purification tube, a conventional catalyst for removing the target in the gas is placed in the reaction tube, and a catalyst for removing other by-product gases generated after the treatment of the reaction tube is placed in the purification tube, A conventional cooling medium (water, etc.) is passed through the cooling pipe.

The advantages and technical effects of the present utility model:

The device of the utility model is used to treat the gas to be purified containing a variety of impurities. The gas is ionized and excited through the discharge area, and at the same time, the pollutants in the gas are removed under the synergistic action of the catalyst, and then enters the purification tube to realize the purification of the subsequent by-product gas. Part of the electric energy in the area is converted into heat energy, and the heat is exchanged through the cooling medium to control the temperature of the discharge area; the device can avoid the problem that the temperature of the reactor increases during the low-temperature plasma generation process, which affects the activity of the catalyst. The device has a simple structure and is suitable for industrialization. Production and marketing applications.

Description of drawings

Fig. 1 is the structural representation of the utility model device;

Fig. 2 is a schematic diagram of the structure of the device in use;

In the figure: 1-reaction tube; 2-cooling tube; 3-purification tube; 4-high voltage electrode; 5-grounding electrode; 6-connecting tube; 7-sealing plug; 8-gas inlet; 9-cooling medium inlet; 10 - cooling medium outlet; 11 - gas outlet; 12 - catalyst.

Detailed ways

The present utility model will be described in further detail below through the accompanying drawings and embodiments, but the protection scope of the present utility model is not limited to the content.

Example 1: As shown in Figure 1, the temperature-reducing dielectric barrier discharge reactor includes a reaction tube 1, a cooling tube 2, a purification tube 3, a high-voltage electrode 4, and a ground electrode 5. The reaction tube 1 is a hollow circular tube, and the top of the reaction tube is It is sealed by a sealing plug 7 (rubber plug), and the high-voltage electrode 4 is disposed in the reaction tube 1 through the sealing plug 7. The high-voltage electrode is a stainless steel electrode, and a gas inlet 8 is provided at the bottom of the reaction tube 1. The pipe 6 is connected with the air inlet on the upper part of the purification pipe 3, the top of the purification pipe 3 is sealed by a sealing plug, a gas outlet 11 is opened at the bottom of the purification pipe 3, and the cylindrical stainless steel ground electrode 5 is sleeved outside the reaction pipe 1 and is connected with the high-voltage electrode. Correspondingly, the cooling pipe 2 is sleeved outside the ground electrode 5, and the cooling pipe is a sandwiched cylinder, that is, the ground electrode is sandwiched between the outer wall of the reaction pipe and the inner wall of the cooling pipe; the lower part of the cooling pipe 2 is provided with a cooling medium inlet 9, and the upper part is provided with There are cooling medium outlets 10 and they are all communicated with the interlayer, and the high-voltage electrode and the ground electrode are connected to the power supply;

This reactor is used to treat natural gas containing COS, as shown in Fig. 2, a targeted catalyst for removing COS is filled in the discharge area of the reaction tube, and a catalyst ₁₂ for removing SO2 is filled in the purification tube, and the The gas to be treated of COS is introduced into the reaction tube 1 from the gas inlet 8, and the gas passes through the discharge area. Under the combined action of the low-temperature plasma and the catalyst, the COS in the gas is converted into SO ₂ and CO, etc. Water at 25°C is introduced into the cooling pipe to adjust the temperature of the reaction pipe. After the reaction, the gas enters the purification pipe 3 through the communication pipe 6. Under the action of the catalyst, the trace SO ₂ by-products generated in the process of purifying the COS are further removed, and the purified gas It is discharged from the gas outlet 11 .

Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and does not limit the protection scope of the present invention. It deviates from the essence and scope of the technical solution of the present invention.

Claims (4)

1. A temperature dropable dielectric barrier discharge reactor, characterized in that it comprises a reaction tube (1), a cooling tube (2), a purification tube (3), a high voltage electrode (4), a ground electrode (5), a reaction tube ( 1) The upper part is connected to the upper part of the purification pipe (3) through the communication pipe (6), the high voltage electrode (4) is arranged in the reaction pipe (1) through the sealing plug (7), and the bottom of the reaction pipe (1) is provided with a gas inlet (8). ), the ground electrode (5) is sleeved outside the reaction tube (1) and corresponds to the discharge electrode, the cooling pipe (2) is sleeved outside the ground electrode (5), and the cooling pipe (2) is provided with a cooling medium inlet, A cooling medium outlet; a gas outlet (11) is opened at the bottom of the purification pipe (3), the top of the purification pipe is sealed, and the high-voltage electrode and the ground electrode are connected to the power supply. 2 . The temperature dropable dielectric barrier discharge reactor according to claim 1 , wherein the ground electrode ( 5 ) is a cylindrical electrode, and the cooling pipe is a sandwiched cylinder. 3 . 3 . The temperature dropable dielectric barrier discharge reactor according to claim 1 , wherein the top of the purification tube is sealed by a sealing plug. 4 . 4. The temperature dropable dielectric barrier discharge reactor according to claim 1, characterized in that: when in use, a catalyst is placed in the reaction tube (1) and the purification tube (3), and cooling is passed into the cooling tube (2) medium.

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