Device using low-temperature composite catalytic oxidization to treat volatile organic chemicals (VOCs)

Abstract

The invention discloses a device using low-temperature composite catalytic oxidization to treat volatile organic chemicals (VOCs). The device comprises a waste gas balance system, an efficient preprocessing tower, a composite catalytic oxidation tower, a catalytic oxidation system and a monitoring gas discharge cylinder, wherein the front end of the efficient preprocessing tower is connected with the waste gas balance system, the rear side of the efficient preprocessing tower is connected with the composite catalytic oxidation tower, the lower portion of the composite catalytic oxidation tower is communicated with the catalytic oxidation system, and the gas vent of the composite catalytic oxidation tower is communicated with the monitoring gas discharge cylinder. The device has the advantages that the device is simple in structure and capable of greatly increasing the treating effect of the VOCs, the application field of the device can be expanded, and the device can be conveniently popularized and used in industry.

Description

technical field [0001] The invention belongs to the technical field of industrial waste gas treatment, and in particular relates to a device for treating volatile organic pollutants through low-temperature composite catalytic oxidation. Background technique [0002] Comparing the applicability, advantages and disadvantages of the volatile organic pollutants VOCs treatment technology existing in the market, 1. The adsorption technology has the advantages of quick effect, low cost and good treatment effect in a short period of time, but long-term operation requires the device The activated carbon and bamboo charcoal in the factory should be replaced. The replaced activated carbon and bamboo charcoal are hazardous wastes, which need to be processed by units with hazardous waste treatment qualifications, and the later treatment costs are higher, which increases the operating costs of the enterprise; 2. Plasma technology is aimed at It has a good effect in the treatment of waste ...

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Problems solved by technology

[0002] Comparing the applicability, advantages and disadvantages of the volatile organic pollutants VOCs treatment technology existing in the market, 1. The adsorption technology has the advantages of quick effect, low cost and good treatment effect in a short period of time, but long-term operation requires the device The activated carbon and bamboo charcoal in the factory should be replaced. The replaced activated carbon and bamboo charcoal are hazardous wastes, which need to be processed by units with hazardous waste treatment qualifications, and the later treatment costs are higher, which increases the operating costs of the enterprise; 2. Plasma technology is aimed at It has a good effect in the treatment of waste gas in slaughtering, printing and dyeing industries. However, there are certain safety hazards for volatile organic waste gas, and there are some sticky substances in volatile organic waste gas, which are easy to cause damage to the air during operation. The blockage of the discharge electrode causes the equipment to stop running, making the equipment unable to operate stably, and the maintenance and replacement of the discharge electrode is very expensive, and the operating cost increases. At the same time, due to the direct contact between the discharge electrode and the exhaust gas, the plasma technology has There are certain hidden dangers of safety accidents, especially for methane and hydrogen sulfide gases, which are highly dangerous; 3. The combustion technology has defects such as insufficient residence time, insufficient combustion, and high temperature to cause gas fission, and the gas after incineration contains nitrogen. The phenomenon that the total amount of oxides and sulfur dioxide emissions exceeds the standard. The combustion technology is aimed at low-concentration waste gas. During the operation, a large amount of natural gas needs to be introduced to ensure the temperature in the furnace, which increases the operating cost of the enterprise, and for high-concentration volatile organic waste gas. There are certain hidden dangers of safety accidents in the operation of combustion technology

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