Innocent treatment method for sulfur-bearing VOC

A technology of harmless treatment and treatment equipment, applied in the direction of combustion method, incinerator, combustion type, etc.

Inactive Publication Date: 2017-09-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for sulfur-containing VOCs, precious metals such as platinum, palladium, ruthenium, and rhodium that have proven to be very effective in other industries cannot be used as catalysts for harmless treatment

Method used

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  • Innocent treatment method for sulfur-bearing VOC
  • Innocent treatment method for sulfur-bearing VOC
  • Innocent treatment method for sulfur-bearing VOC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Cuprous oxide (Cu) with a particle size of 0.1mm 2 O) powder and metal cerium dioxide (CeO) with a particle size of 0.1 mm 2 ) according to the mass ratio of 8:2, mix evenly, and fill to such as figure 1 In the shown ceramic tube with an inner diameter of 50 mm and a length of 800 mm, a barrier layer is provided at both ends of the ceramic tube, and the barrier layer is respectively provided with an air outlet and an air inlet;

[0056] (2) Put the sulfur-containing VOC gas (the composition is shown in Table 1) and the combustion-supporting gas oxygen into the ceramic tube through the inlet at a linear velocity of 1.2m / min, catalyze combustion at 680°C, and the exhaust gas after combustion flows out from the outlet. Finally absorbed by alkaline substances. The content of each component of VOC remaining in the exhaust gas is lower than the national air pollutant comprehensive discharge standard, as shown in Table 1.

[0057] The harmless treatment result of VOC in...

Embodiment 2

[0061] (1) Copper oxide (CuO) powder with a particle size of 0.1 mm and aluminum oxide (Al 2 o 3 ) according to the mass ratio of 6:4, mix evenly, and fill to such as figure 1 In the shown ceramic tube with an inner diameter of 50 mm and a length of 800 mm, a barrier layer is provided at both ends of the ceramic tube, and the barrier layer is respectively provided with an air outlet and an air inlet;

[0062] (2) Put the sulfur-containing VOC gas (the composition is shown in Table 2) and the combustion-supporting gas oxygen into the ceramic tube through the inlet at a linear velocity of 1.2m / min, and catalyze combustion at 720°C, and the exhaust gas after combustion flows out from the outlet. Finally absorbed by alkaline substances. The content of each component of VOC remaining in the tail gas is lower than the national air pollutant comprehensive discharge standard, as shown in Table 2.

[0063] The harmless treatment result of VOC in table 2 embodiment 2

[0064]

[...

Embodiment 3

[0067] (1) Copper powder with a particle size of 0.1mm and metal titanium dioxide (TiO2) with a particle size of 0.1mm 2 ) according to the mass ratio of 7:3, mix evenly, and fill to such as figure 1 In the shown ceramic tube with an inner diameter of 50mm and a length of 800mm, barrier layers are provided at both ends of the ceramic tube, and the barrier layers at both ends are respectively provided with an air outlet and an air inlet;

[0068] (2) Put sulfur-containing VOC gas (composition shown in Table 1) and combustion-supporting gas oxygen into the ceramic tube through the inlet at a linear velocity of 1.2m / min, catalyze combustion at 720°C, and the exhaust gas after combustion flows out from the outlet. Finally absorbed by alkaline substances. The content of each component of VOC remaining in the tail gas is lower than the national air pollutant comprehensive discharge standard, as shown in Table 3.

[0069] The harmless treatment result of VOC in table 3 embodiment 3...

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Abstract

The invention belongs to the field of environmental protection and discloses a method for harmless treatment of sulfur-containing VOC. The method is as follows: (1) the catalyst is placed in the combustion furnace of the sulfur-containing VOC combustion treatment device, and the sulfur-containing VOC gas and the combustion-supporting gas are introduced; (2) the mixed sulfur-containing VOC gas and the combustion-supporting gas are placed in the catalytic combustion furnace Carry out catalytic combustion under the effect of the catalyzer, the gas gained after combustion is absorbed by alkaline substance at last; The catalyst described in step (1) is main catalyst, main catalyst and co-catalyst, main catalyst and carrier or main catalyst, co-catalyst and carrier. The method of the present invention is simple and efficient, and the catalyst used can increase the local concentration of sulfur-containing VOC gas and combustion-supporting gas, and can also weaken its chemical bond energy, increase its reactivity, and make the catalytic combustion of sulfur-containing VOC easier to carry out, and the reaction is more efficient. Thoroughly and effectively realize the harmless treatment of sulfur-containing VOC.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular to a method for harmless treatment of sulfur-containing volatile organic compounds (VOC) through catalytic combustion. Background technique [0002] Sulfur-containing compounds are usually contained in toxic and hazardous wastes such as waste tires, medical waste, domestic waste, oily waste, general industrial waste, waste pesticides and their raw materials. Toxic and hazardous waste such as discarded tires, medical waste, domestic waste, oily waste, general industrial waste, waste pesticides and their raw materials will produce sulfur-containing volatile organic compounds (VOC). [0003] At present, there are two main types of harmless treatment methods for VOC. One is adsorption; the other is catalytic combustion. [0004] The advantage of the adsorption method is that the equipment is simple, the technical content is low, and the investment is small, but the operating co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/07
CPCF23G7/07F23G2209/14
Inventor 游革新王春燕
Owner SOUTH CHINA UNIV OF TECH
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