Roasting flue gas purification device and treatment method

Abstract

The invention discloses a roasting flue gas purification device and a treatment method. Flue gas enters an efficient reactor and is subjected to an adsorption reaction with carbon powder sprayed froma carbon powder bin; gas after reaction enters a cloth bag-type dust collector, carbon powder after adsorption reaction is collected and circularly enters the efficient reactor again to be subjected to adsorption reaction, an air quality tester at the port of the cloth bag-type dust collector tests the content K of particles in the cloth bag-type dust collector, and in the cloth bag-type dust collector, the gas adsorbed by the carbon powder enters a wet purification system through a fan to be subjected to desulfurization treatment, and the desulfurized gas is discharged into the atmosphere. The method has the advantages that the treatment method in the field of calcination flue gas is applied to the field of roasting flue gas, and the roasting flue gas is effectively and cleanly treated bycombining the carbon powder.

Description

technical field [0001] The invention relates to the field of roasting flue gas purification, in particular to a wet treatment method for roasting flue gas. Background technique [0002] As we all know, carbon factories are enterprises that are likely to cause serious pollution. The main reason is that during the prebaked anode roasting process, roasting flue gas containing fluoride, dust, asphalt fume, sulfur dioxide, benzopyrene and other harmful substances is produced. At present, the purification treatment of roasting flue gas generally adopts two forms: electric capture oiler + desulfurization process combination method and RTO + desulfurization process combination method. [0003] Most of the asphalt smoke and large particle dust in the flue gas can be removed by the purification method of the electric tar collector. The tower is used to reduce the temperature of the flue gas, which not only increases the cost, but also causes a waste of energy; second, the asphalt cap...

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Problems solved by technology

[0003] Most of the asphalt smoke and large particle dust in the flue gas can be removed by the purification method of the electric tar collector. The tower is used to reduce the temperature of the flue gas, which not only increases the cost, but also causes a waste of energy; second, the asphalt captured by the electric tar collector has complex components and can only be treated as a hazardous waste, and the cost of subsequent treatment is relatively high; The third is that the removal of benzopyrene substances by the electric tar collector is not obvious, and it cannot meet the increasingly stringent environmental protection requirements

[0004] The RTO regenerative incinerator purification method can effectively remove organic components such as asphalt smoke and benzopyrene in the flue gas, but due to the high energy consumption of the RTO regenerative incinerator purification method, the investment and operation costs are relatively expensive , so few companies adopt this method at present

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