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Array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment

A technology of streamer discharge and reactor, which is applied in the field of array type narrow-gap coaxial streamer discharge reactor structure, can solve the problems of large reactor volume, high technical requirements for power supply, and less generation

Inactive Publication Date: 2013-02-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The array-type narrow-gap coaxial streamer discharge reactor solves the problems of small amount of corona discharge active material, large volume of reactor required to deal with large flue gas volume, high technical requirements for power supply of bulk electrode dielectric barrier discharge reactor, etc. Control gaseous pollutants in coal-fired boiler flue gas and chemical waste gas

Method used

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  • Array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment
  • Array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment
  • Array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 Shown is a schematic diagram of the axial cross-section of an arrayed narrow-gap coaxial streamer discharge reactor 3, as figure 2 Shown is a schematic diagram of an axial cross-section of an array narrow-gap coaxial streamer discharge reactor 3 . The sub-reactors 4 are installed inside the arrayed narrow-gap coaxial streamer discharge reactor 3 in the form of an array. The array type narrow-gap coaxial streamer discharge reactor 3 uses a stainless steel plate with a thickness of 3mm to make a box with a length, width, and height of 600mm*270mm*270mm, and 9 sub-reactors 4 are evenly arranged in the array type narrow-gap coaxial streamer discharge reactor 3 Inside, make 9 holes with a diameter of 56mm on the front and rear two stainless steel plates with a square size of 270mm*270mm, install the metal tube of the low-voltage electrode 2 of the sub-reactor 4, and seal the metal tube of the low-voltage electrode 2 with the stainless steel plate during in...

Embodiment 2

[0024] Such as figure 1 Shown is a schematic diagram of the axial cross-section of an arrayed narrow-gap coaxial streamer discharge reactor 3, as figure 2 Shown is a schematic diagram of the axial cross-section of the arrayed narrow-gap coaxial streamer discharge reactor 3. The sub-reactors 4 are installed inside the arrayed narrow-gap coaxial streamer discharge reactor 3 in the form of an array, and the arrayed narrow-gap coaxial streamer discharge reactor The size and installation method of the low-voltage electrode and the equalizer plate of the device 3 and the sub-reactor 4 are the same as those of the example 1. Such as Figure 4 Shown is a schematic cross-sectional view of the electrode structure of the gear-shaped narrow-gap streamer discharge electron reactor 4. The high-voltage discharge electrode 1 is a metal rod with a total length of 650 mm, and the effective length of the gear installation is 450 mm. For connection with the insulator, the number of gears insta...

Embodiment 3

[0026] Such as figure 1 Shown is a schematic diagram of the axial cross-section of an arrayed narrow-gap coaxial streamer discharge reactor 3, as figure 2 Shown is a schematic diagram of the axial cross-section of the arrayed narrow-gap coaxial streamer discharge reactor 3. The sub-reactors 4 are installed inside the arrayed narrow-gap coaxial streamer discharge reactor 3 in the form of an array, and the arrayed narrow-gap coaxial streamer discharge reactor The size and installation method of the low-voltage electrode and the equalizer plate of the device 3 and the sub-reactor 4 are the same as those of the example 1. Such as Figure 5 Shown is a cross-sectional schematic diagram of the thorn-shaped narrow-gap streamer discharge electron reactor 4 electrode structure, the high-voltage discharge electrode 1 is a metal rod with a length of 650 mm, and the diameter of the metal rod is 16 mm. The effective length of the metal rod used to install the thorn electrode is 450mm; bo...

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Abstract

Provided is an array-type narrow-gap coaxial streamer discharge reactor for gaseous pollutant pretreatment. A plurality of groups of narrow-gap streamer discharge sub reactors which are connected in parallel are allocated inside the reactor, and the sub reactors are distributed in an array. Each narrow-gap streamer discharge sub reactor is formed by a high-voltage discharge electrode and a low-voltage electrode, the low-voltage electrode is a metal cylinder or a metal tube with the diameter of 5-80mm, the high-voltage discharge electrode is that electrodes are evenly distributed on a metal rod, the high-voltage discharge electrode is installed on a centre shaft of the metal cylinder or the metal tube, and a distance between the tip end of the high-voltage discharge electrode and an inner wall of the low-voltage electrode is 1-20mm. When high voltage is applied between the high-voltage discharge electrode and the low-voltage electrode, streamer discharge with high strength is produced at the position of the discharge gap. The reactor serves as a part of waste gas tube or flue, treated smoke or waste gas firstly enters the array-type narrow-gap coaxial streamer discharge reactor for pretreatment and then enters a conventional smoke waste gas treatment reactor for treatment.

Description

technical field [0001] The invention belongs to the technical field of gaseous pollutant control, and relates to an array type narrow-gap coaxial streamer discharge reactor structure for pretreatment of gaseous pollutants. Background technique [0002] Coal-fired or oil-fired boiler flue gas and chemical waste gas contain a large amount of gaseous pollutants, such as SO 2 , NOx, VOCs and Hg, etc., as well as aerosols containing these pollutants, seriously pollute the atmospheric environment and bring great harm to human survival and the ecological environment. As the country is stepping up the implementation of various environmental pollution control policies and regulations, the state and enterprises have invested huge manpower and material resources in the research and development of various gaseous pollutant control technologies and the installation of gaseous pollutant treatment equipment, so that the pollution situation of gaseous pollutants has been improved. Must con...

Claims

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Application Information

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IPC IPC(8): B01D53/32B01D53/74B01D53/60B01D53/72B01D53/64
Inventor 李杰商克峰鲁娜吴彦
Owner DALIAN UNIV OF TECH
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