Industrial refuse cracking incineration offgas deacidification treatment method

Abstract

The invention discloses an industrial refuse cracking incineration offgas deacidification treatment method. The offgas sequentially passes through the following devices: a gas overheat protector, a thermal gas mass flow meter, a mixed gas flow regulating valve, a bag-type dust remover, a front-end SO2 concentration sensor, a filtering flame arrester, an SO2 catalytic oxidation reactor, a sulfuric acid aerosol generator, a ferrous powder contact polarization attraction reaction still, an alkaline tower, a water steam separator, a tail-end SO2 concentration sensor and an exhausting fan. The system can carry out overheating protection on the whole system according to the air inflow temperature of industrial refuse cracking incineration offgas; the method can monitor the SO2 removal efficiency of the entire system in real time, creatively reacts sulfuric acid aerosol with ferrous powder to generate ferrous sulfate aerosol and attracts and separates ferrous sulfate aerosol under the effect of a high-intensity magnetic field to realize the purpose of efficiently removing SO2; in addition, the separated ferrous sulfate aerosol as a by-product can be collected and recycled.

Description

technical field [0001] The invention relates to a deacidification treatment method for industrial waste cracking and incineration tail gas, which belongs to the field of waste gas treatment in environmental protection. Background technique [0002] With the rapid advancement of the industrialization process, the amount of industrial waste has also increased sharply. At the same time, my country is a country with relatively tight land resources, especially in industrially developed North China, East China, and South China, where the population density is high and land resources are seriously in short supply. Therefore, landfill treatment is not suitable for these areas. At the same time, landfill will also cause serious pollution to soil and groundwater. At present, cracking and incineration is commonly used to treat industrial waste. At the same time, the heat source generated by incineration can also be used to generate electricity and generate heat, which is an effective ...

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Problems solved by technology

[0003] However, during the cracking and incineration of industrial waste, a large amount of toxic and harmful gases will be produced, such as acid gases, volatile organic compounds, dioxins, etc., and the acid tail gas produced is one of the main pollutants in the atmospheric environment.

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