Multi-level heat exchange split-building type catalytic oxidation system and processing method thereof

Abstract

The invention discloses a multi-level heat exchange split-building type catalytic oxidation system and a processing method thereof. The system comprises a waste gas fan, an air supplement fan, a heatexchange system, an electric heater, a catalytic oxidizer, an induced draft fan, a control system, a safety system and a connection pipeline, wherein the waste gas fan and the air supplement fan are arranged in parallel and are sequentially connected with the heat exchange system, the electric heater and the catalytic oxidizer through pipelines. The processing method comprises the steps that gas containing VOCs is pressurized by the fan and then enters the two-level heat exchange system in sequence to conduct heat exchange with high-temperature tail gas from a catalytic reactor, heat supplement is conducted through the electric heater, the gas enters the catalytic reactor after reaching the ignition temperature, catalytic oxidation reaction is conducted in the catalytic reactor, waste gascontaining VOCs entering the system is heated by entering the two-level heat exchange system, and then the tail gas is drained at high temperature. The system is suitable for ultraclean emission control and tail end treatment of waste gas containing VOCs with low concentration.

Description

technical field [0001] The invention belongs to the field of VOCs waste gas treatment, and in particular relates to a multi-stage heat-exchanging separate catalytic oxidation system and a treatment method thereof. Background technique [0002] The process of converting harmful gas, steam, liquid or smoke into harmless substances by combustion (oxidation) is called combustion purification. The combustion technologies of industrial organic waste gas mainly include direct flame combustion method, thermal combustion method, catalytic combustion method and regenerative thermal oxidation method. [0003] The catalytic combustion (oxidation) method is a method of converting pollutants in the exhaust gas into harmless compounds or substances that are easy to handle and recycle by using the catalytic action of a catalyst. Under the action of the catalyst, the organic matter in the exhaust gas can be completely oxidized at a relatively low temperature, and the catalytic oxidation rea...

AI Technical Summary

Problems solved by technology

However, the separate catalytic oxidation system of the existing technology generally requires a large amount of energy consumption and cannot fully realize energy recovery.

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