Novel plasma gasifier and operation process thereof

Abstract

The invention discloses a novel plasma gasification furnace and an operation process thereof. The novel plasma gasification furnace comprises a feeding hole formed in the top of a furnace body; a homogenizer arranged below the feeding hole; a fire grate, which is rotatably arranged below the homogenizer, wherein crushed and compounded hazardous waste entering a furnace body from the feeding hole forms a dry pyrolysis layer, an oxide layer and a slag layer from top to bottom in the gasification space, and the fire grate is arranged on a base; an air distribution plate, which is arranged at the bottom of the furnace body; a mixing chamber, which is arranged below the air distribution plate, wherein the upper part of the mixing chamber is communicated with one part of a plurality of air caps arranged on the air distribution plate through an air supply pipe; and an arc plasma generator, which is communicated with the mixing chamber, feeds high-temperature and high-activation plasma active groups generated by the arc plasma generator into the mixing chamber, mixes the plasma active groups with preheated high-pressure air in the mixing chamber, and conveys the mixture to the air caps. Therefore, high-temperature and high-efficiency plasma active groups are injected into the slag layer and the oxide layer in the gasification furnace, so that the gasification effect is improved.

Description

technical field [0001] The invention relates to the field of post-treatment of hazardous waste, in particular to a novel plasma gasifier and its operating process for processing incineration hazardous waste. Background technique [0002] At present, the domestic mainstream method of treating incineration hazardous waste is the rotary kiln. The combustion temperature of this type of furnace is not high, and the generation rate of secondary waste (such as fly ash, bottom slag, etc.) is high (generally around 25%). The phenomenon of high levels of oxins; these secondary wastes traditionally produced are basically landfilled or sent to cement kilns for coordinated disposal. Among them, landfill is an unsustainable process route due to the scarcity of land resources. [0003] Coordinated disposal in cement kilns mostly uses the method of blending and dilution to treat fly ash. The treatment temperature is not enough, and harmful substances such as dioxins and heavy metals have n...

AI Technical Summary

Problems solved by technology

[0003] Coordinated disposal in cement kilns mostly uses the method of blending and dilution to treat fly ash. The treatment temperature is not enough, and harmful substances such as dioxins and heavy metals have not been treated in a more natural way, and they still exist in the finished cement. The future engineering application of batch cement will cause problems such as lower cement grade and insufficient strength. In some areas, the quality of cement produced by this process is not up to standard, which leads to production safety accidents;

Images