Catalytic oxidation VOCs device and treatment method

Abstract

The invention relates to a catalytic oxidation VOCs device and a treatment method. The catalytic oxidation VOCs device comprises a box; a combustion chamber is arranged in the box; an intake pipe andan exhaust pipe are arranged at the two ends of the combustion chamber; a heating device and a catalysis bed are arranged in the combustion chamber; and the heating device is positioned between the catalysis bed and the intake pipe. The treatment method comprises the following treatment steps: (a) waste gas containing VOCs enters the intake pipe; and compressed air is input in the intake pipe formixing with the waste gas to enter the combustion chamber; (b) the compressed air and waste gas mixed gas is heated to 250-300 DEG C in the combustion chamber; and (c) the compressed air and waste gasmixed gas reaches the catalysis bed area; and under the effect of a catalyst, the waste gas containing VOCs is oxidized as CO2 and H2O, and is exhausted into atmosphere through the exhaust pipe. Thecombustion chamber of the device is stable in pressure, small in size, high in catalytic oxidation efficiency and convenient to install and maintain, and can preferably meet the use of sintering equipment.

Description

technical field [0001] The invention relates to the field of VOCs treatment, in particular to a catalytic oxidation VOCs device and a treatment method. Background technique [0002] VOCs (volatile organic compounds, volatile organic compounds) refer to various organic substances with a boiling point between 50°C and 260°C at room temperature, and can be further divided into alkanes, aromatics, lipids, aldehydes and others according to their chemical structures. The most common ones are benzene, toluene, styrene, chloroform, trichloroethylene, and trichloroethane. [0003] The waste gas generated in industrial production contains VOCs, which need to be treated before being discharged into the atmosphere. The traditional terminal treatment technology includes two types. The first type is a non-destructive method, which uses physical methods to recover VOCs; the second type is through biochemical reactions. A destructive method to oxidize and decompose VOCs into non-toxic or l...

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Problems solved by technology

[0003] The waste gas generated in industrial production contains VOCs, which need to be treated before being discharged into the atmosphere. The traditional terminal treatment technology includes two types. The first type is a non-destructive method, which uses physical methods to recover VOCs; the second type is through biochemical reactions. A destructive method to oxidize and decompose VOCs into non-toxic or low-toxic substances, among which catalytic oxidation technology is considered to be the most promising method to eliminate VOCs, but in the tail gas treatment of small sintering equipment, there are pressure fluctuations in the combustion chamber This phenomenon interferes with the sintering process of the front-end small sintering equipment, and there are also the phenomenon that the catalytic oxidation VOCs equipment is large in size, the catalytic oxidation efficiency is not high, the installation is troublesome, and the maintenance is difficult

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