System and method for treating toxic gas by using electrically coupled plasma

A technology for coupling plasma and toxic gases, which is applied in the field of electrochemistry, can solve the problems of large power consumption, large energy consumption, and rapid heat release, and achieve the effect of promoting purification, flexible methods, and promoting adsorption

CN113082277AActive Publication Date: 2021-07-09YANSHAN UNIV
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-07-09

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a system and method for treating toxic gas by using electrified coupled plasma. The system comprises a Plasma generating device, a Plasma voltage regulator, a purifying device, a gas inlet channel and a gas detecting device; the Plasma generating device is used for generating plasmas; and the purifying device is positioned in the Plasma generation device and is used for purifying toxic gas. The method comprises the following steps: adjusting the Plasma voltage regulator to generate plasmas inside the Plasma generating device; enabling toxic gas molecules to form various tiny particles under the action of the plasma, and enabling the tiny particles to react with the purification device; enabling the gas detection device to detect the gas discharged by the Plasma generation device and determining whether the gas is discharged or not. Through the ionization effect, toxic gas molecules are broken down to form tiny particles which react with the purification device, the purpose of effective purification treatment is achieved, and a technical reference is provided for purification treatment of other toxic gases.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of electrochemistry, in particular to a system and method for treating poisonous gas with electrically coupled plasma. Background technique

[0002] The phenomenon of global warming caused by the greenhouse effect is becoming more and more serious. Compared with the traditional understanding of the greenhouse gas CO 2 , the fluoride gas has a higher greenhouse effect potential value, and the fluoride gas is not easy to decompose, and the resulting greenhouse effect will continue to increase for a long time, which will have a great impact on the natural environment and human life.

[0003] At present, for such toxic pollutant gases, lye or Al 2 o 3 Adsorption, or use calcium and / or magnesium as the active ingredient of the purifier, or use metal zinc, metal aluminum or a mixture of the two as the main ingredient of the purifier. However, since such gases are chemically stable at room temperature, even under the acti...

Examples

Embodiment 1

[0045] In this embodiment one, the toxic gas to be treated is SF 6 , according to SF 6 The chemical composition and properties, in the present embodiment one, adopt the voltage scope in the low voltage Plasma generating device in the range of 0-220V, adjust the Plasma voltage regulator, output the alternating current of 50V, 50Hz to the Plasma generating device, SF 6 In the closed Plasma generating device, sufficient ionization can be obtained. The ionized gas particles contain positive and negative ions and electrons, and the gas as a whole is electrically neutral; the internal pressure of the Plasma generating device is maintained at 0.3MPa; the purification device adopts 4V DC power supply and adopts porous The carbon rod is used as the positive electrode to connect the positive electrode of the DC power supply, and the first main group metal single substance Li is used as the cathode electrode to connect the negative electrode of the DC power supply. The sheet shape is use...

Embodiment 2

[0052] In the second embodiment, the toxic gas to be treated is CF 4 , according to CF 4 The chemical composition and properties, in the present embodiment two, adopt the voltage range in the low voltage plasma generating device in the range of 0-220V, regulate the plasma voltage regulator, output the alternating current of 50V, 50Hz to the plasma generating device, CF 4 In the closed Plasma generating device, sufficient ionization can be obtained. The ionized gas particles contain positive and negative ions and electrons, and the gas as a whole is electrically neutral; the internal pressure of the Plasma generating device is maintained at 0.3MPa; the purification device adopts 4V DC power supply and adopts porous The carbon rod is used as the positive electrode to connect the positive electrode of the DC power supply, and the second main group metal element Mg is used as the cathode electrode to connect the negative electrode of the DC power supply. The sheet shape is used to...

Embodiment 3

[0059] In this embodiment three, the toxic gas to be treated is SF 6 , according to SF 6 The chemical composition and properties, in the present embodiment three, adopt the high voltage plasma generating device that voltage range is greater than 250V, adjust the Plasma voltage regulator, output the alternating current of 350V, 50Hz to the plasma generating device, SF 6 In the closed Plasma generating device, sufficient ionization can be obtained. The ionized gas particles contain positive and negative ions and electrons, and the gas as a whole is electrically neutral; the internal pressure of the Plasma generating device is maintained at 0.3MPa; the purification device uses a 3V DC power supply and adopts porous The carbon rod is used as the positive electrode to connect the positive electrode of the DC power supply, and the first main group metal element Na is used as the cathode electrode to connect the negative electrode of the DC power supply. The sheet shape is used to in...