A small domestic waste low-temperature pyrolysis furnace flue gas purification device

Abstract

The invention discloses a small flue gas purification device for a domestic garbage low-temperature pyrolysis furnace. The small flue gas purification device comprises a tar condenser, a tar collecting case, an electrostatic decoking device, a wet scrubber, an efficient dioxin adsorption bed and a three-stage settling pond; the tar condenser and the electrostatic decoking device are both arranged above the tar collecting case and communicated with the tar collecting case; the electrostatic decoking device is connected with the wet scrubber through a pipeline, the efficient dioxin adsorption bed is arranged at the upper end the wet scrubber and communicated with the wet scrubber, and the lower end of the wet scrubber is communicated with the three-stage settling pond; a flue gas inlet of the tar condenser is connected with a flue gas outlet of the domestic garbage low-temperature pyrolysis furnace, an outlet of the tar condenser is connected with the tar collecting case, and an inlet of the electrostatic decoking device is connected with the tar collecting case. According to the small flue gas purification device for the domestic garbage low-temperature pyrolysis furnace, tar in flue gas is removed first, the problems that the tar plugs and corrodes a flue gas pipeline in existing small domestic garbage pyrolysis treatment on the flue gas are solved, and meanwhile it can be guaranteed that new dioxin cannot be generated again in subsequent treatment of the flue gas by cooling the flue gas first.

Description

technical field [0001] The invention relates to a flue gas purification device, in particular to a small-scale domestic garbage low-temperature pyrolysis furnace flue gas purification device, which is a small-scale waste low-temperature pyrolysis furnace flue gas pollutant purification combined equipment. Background technique [0002] With the continuous improvement of the living standards of rural residents, the rural domestic waste has increased year by year, and the environmental degradation caused by the random piling of rural domestic waste has made people aware of the urgent need to effectively deal with rural domestic waste. In recent years, the construction of new socialist countryside has continuously deepened and promoted the pace of rural domestic waste disposal. Practice has proved that for the treatment of small and scattered rural domestic waste, especially in hilly areas that are far away from the county seat, economically backward, and inconvenient in transpo...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems existing in the prior art, and provide a combined equipment for purifying flue gas from a low-temperature pyrolysis furnace for domestic waste, which can solve the problem of excessive tar content in flue gas from low-temperature pyrolysis furnaces for domestic waste under low-cost operation. It is easy to block the flue gas pipe, resulting in the failure of electrostatic precipitator and difficulty in meeting the emission standards of dioxins, etc.

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