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Flow direction transformation plasma device and flow direction transformation plasma method for treating VOCs (volatile organic compounds)

A plasma and flow direction conversion technology, applied in the field of plasma technology and flow direction conversion, can solve problems such as poor VOCs treatment effect, and achieve the effects of improving energy efficiency, reducing energy consumption, and improving degradation rate

Pending Publication Date: 2018-02-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor effect of single plasma technology on the treatment of VOCs, the research on the c

Method used

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  • Flow direction transformation plasma device and flow direction transformation plasma method for treating VOCs (volatile organic compounds)
  • Flow direction transformation plasma device and flow direction transformation plasma method for treating VOCs (volatile organic compounds)
  • Flow direction transformation plasma device and flow direction transformation plasma method for treating VOCs (volatile organic compounds)

Examples

Experimental program
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Effect test

Embodiment 1

[0022] To remove the initial concentration of toluene 500mg / m 3 For example, follow these steps:

[0023] The high-voltage electrode (4) is made of tungsten wire, fixed in the center of the plasma generator (1) with an insulating plug (5), and the iron wire wound on the outer wall of the reactor is the ground electrode (6). The heat storage section (8) on both sides of the discharge area (7) is provided with cordierite (9) as a heat storage body, six pieces are placed on each side, and insulation cotton (10) is wrapped around the outside. Four solenoid valves (3) a, b, c, and d are used to control the direction of air flow. During the reaction process, a thermocouple (15) is used to measure the temperature change of the outer wall of the plasma reactor (1). Adjust the toluene concentration to reach a stable value.

[0024] Experimental conditions: without flow direction change and flow direction change period of 10min, the field strength is 14.55kV / cm, the frequency is 100H...

Embodiment 2

[0030] To remove the initial concentration of toluene 600mg / m 3 For example, follow these steps:

[0031] The high-voltage electrode (4) is made of tungsten wire, fixed in the center of the plasma generator (1) with an insulating plug (5), and the iron wire wound on the outer wall of the reactor is the ground electrode (6). The heat storage section (8) on both sides of the discharge area (7) is provided with cordierite (9) as a heat storage body, six pieces are placed on each side, and insulation cotton (10) is wrapped around the outside. Four solenoid valves (3) a, b, c, and d are used to control the direction of air flow. During the reaction process, a thermocouple (15) is used to measure the temperature change of the outer wall of the plasma reactor (1). Adjust the toluene concentration to reach a stable value.

[0032] Experimental conditions: without flow direction change and flow direction change period are 10, 12, 14min, the field strength is 13.09kV / cm, the frequenc...

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Abstract

A flow direction conversion plasma device and method for VOCs treatment relate to the fields of plasma technology and flow direction conversion technology. Including plasma generator, gas pipeline and solenoid valve. The plasma generator is a dielectric barrier discharge plasma generator, and the material of the reactor is quartz. A tungsten wire is selected as the high-voltage pole, an insulating plug is used to fix it in the center of the quartz tube, and a stainless steel wire wound on the outer wall of the reactor is used as the grounding pole. The heat storage section on both sides of the discharge area has cordierite as a heat storage body, six pieces are placed on each side, and insulation cotton is wrapped around the outside. Solenoid valve is used to control the direction of air flow, and the heat generated in the reaction process is accumulated, and most of the heat is concentrated in the discharge area through the air flow, which can effectively improve the degradation rate of VOCs pollutants and effectively reduce the energy in the reaction process. consumption.

Description

technical field [0001] The invention relates to the field of plasma technology and flow direction conversion technology, and provides a flow direction conversion plasma device and method for VOCs treatment. Background technique [0002] In recent years, low-temperature plasma is often used in the treatment of volatile organic compound VOCs (Volatile Organic Compounds) exhaust gas. However, due to the poor treatment effect of single plasma technology on VOCs, the research on combined plasma treatment technology of VOCs exhaust gas has become a hot research topic at home and abroad. Almost all of these technologies combine low-temperature plasma with catalytic technology to further decompose organic waste gas by combining with different catalysts. Guo Shuqing et al. studied the effect of plasma alone, the removal of the initial concentration of 600mg / m 3 Toluene, field strength 15.60kV / cm 3 , when the frequency is 150Hz, the degradation rate of toluene is 17%, and the energ...

Claims

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Application Information

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IPC IPC(8): B01D53/32H05H1/24
CPCB01D53/32H05H1/2406B01D2259/818B01D2257/708
Inventor 梁文俊武红梅李坚
Owner BEIJING UNIV OF TECH