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Industrial organic exhaust gas active-carbon bed plasma integrated purification technology and device thereof

A technology of organic waste gas and purification device, which is applied in the direction of combined device, separation method, and dispersed particle separation, etc., which can solve the problems of secondary pollution, large air volume, waste gas purification efficiency, reduction of adsorption equipment volume, and reduction of adsorbent filling volume. Achieve the effect of simple operation, avoiding secondary pollution problems, and improving purification efficiency

Inactive Publication Date: 2012-11-28
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This integrated technology and device use the integration of activated carbon and plasma technology to achieve efficient purification of organic waste gas; use plasma to regenerate activated carbon adsorbent in situ, avoid the complexity of the structure of the adsorbent regeneration system, and greatly reduce the amount of adsorbent filling. The volume of the adsorption equipment is greatly reduced; in addition, the present invention can avoid the secondary pollution caused by the discharge of ozone and other gases when the plasma is used alone to purify organic waste gas and the low purification efficiency of large-volume waste gas.

Method used

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  • Industrial organic exhaust gas active-carbon bed plasma integrated purification technology and device thereof
  • Industrial organic exhaust gas active-carbon bed plasma integrated purification technology and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] refer to figure 1 , an industrial organic waste gas purification device, comprising activated carbon adsorption tanks 1, 3 and flat-plate low-temperature plasma 2, the activated carbon adsorption tanks 1, 3 are switched and used alternately through a three-way valve 5, filled with activated carbon as an adsorbent, filled with The amount of activated carbon required for the purification of organic waste gas produced in 2-3 days of normal production. After the adsorption tanks 1 and 3 are saturated, the three-way valves 4 and 6 are switched to form a desorption regeneration cycle system with the plasma 2, and the fan 10 is used for suction. The activated carbon is desorbed, and the desorbed concentrated gas is sent to the plasma for purification, and the ozone-rich tail gas from the plasma is passed into the activated carbon tank in the regeneration process, and the activated carbon is regenerated and activated by ozone. Wherein, the backstop damper 7 is in an open state ...

Embodiment 2

[0019] refer to figure 1 , applied to the paint waste gas purification process equipment in the bicycle paint spray room, including activated carbon adsorption tanks 1, 3 and low-temperature plasma 2, the low-temperature plasma 2 is cylindrical and designed as a tubular heat exchanger, and the high-temperature paint waste gas first enters the exchange The thermal low-temperature plasma 2 heats the gas in the desorption cycle system to accelerate the desorption of the saturated activated carbon bed, and the cooled paint exhaust gas is sent to another activated carbon bed for adsorption and purification. The activated carbon adsorption tanks 1 and 3 are used alternately. Activated carbon is filled as an adsorbent, and the operation process refers to Example 1.

Embodiment 3

[0021] refer to figure 2 , used in an organic waste gas purification device that allows intermittent operation in production. The system consists of an activated carbon bed 1 and a low-temperature plasma 2 connected in series. The activated carbon bed 1 is filled with the amount of activated carbon required for the adsorption of organic waste gas during normal production for 2 to 3 days. During the adsorption and purification process of the activated carbon bed 1, the backstop damper 7 is in an open state, and the backstop damper 8 is in a closed state. When desorbing, turn on the fan 10, due to the suction effect of the fan, the backstop damper 7 is in a closed state, the backstop damper 8 is opened, and the space of the plasma 2 becomes a closed negative pressure zone, and the activated carbon bed 1 is desorbed under negative pressure, and the desorption The attached waste gas is purified in the plasma 2 area, and the ozone-rich tail gas is sent to the activated carbon bed ...

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Abstract

The invention relates to an active-carbon adsorption and plasma organic exhaust gas integrated purification technology and a device thereof, and belongs to the fields of low-temperature plasma, active-carbon adsorption and environmental protection. The main body of the device comprises active-carbon adsorption tanks (1 and 3) and a low-temperature plasma device (2), wherein the active-carbon adsorption tanks (1 and 3) are used for adsorbing organic constituents in industrial organic exhaust gas; the saturated active-carbon adsorption tanks (1 and 3) and the low-temperature plasma (2) form a desorption regeneration cycle system by switching valves (4, 5 and 6); and thus, the active carbon is regenerated in situ. The device has the advantages of high integrated level, high purification efficiency, low operating cost, low operating resistance and strong technological adaptability, and is especially suitable for purifying unstable organic industrial exhaust gas with high flow and low concentration.

Description

technical field [0001] The invention relates to a waste gas purification technology and device, in particular to an integrated technology and device for treating industrial organic waste gas with activated carbon and low-temperature plasma. Background technique [0002] There are many kinds of industrial organic waste gas, the composition is complex, the concentration fluctuates greatly and the change is irregular, and its treatment is relatively difficult. At present, the treatment methods for organic waste gas at home and abroad include catalytic combustion method, activated carbon adsorption method, plasma oxidation method, condensation method and absorption method. The catalytic combustion method has a simple process and high purification efficiency. Its disadvantages are high energy consumption and potential safety hazards, especially not suitable for the treatment of large air volume, low concentration, and unstable organic waste gas; The capacity of the adsorbent is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00
Inventor 陈和平
Owner NINGBO UNIV
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