Municipal solid waste pyrolysis gasification furnace and pyrolysis gasification method

Abstract

The invention discloses a municipal solid waste pyrolysis gasification furnace and a pyrolysis gasification method. The furnace includes an inner cylinder, wherein an outer cylinder is arranged outside the inner cylinder; the inner barrel comprises a lifting pipe section, a fluidized bed section and an air chamber from top to bottom; a water jacket is arranged between the outer cylinder and the inner cylinder; a refractory brick lining is arranged in the inner cylinder, a gas outlet is formed in the upper portion of the lifting pipe section, a garbage inlet and an ash outlet are formed in themiddle of the fluidized bed section, bed materials are arranged in the fluidized bed section, the garbage inlet and the ash outlet are located above the bed materials, the bed materials are located above the air chamber, and a spiral feeder is arranged on the upper portion of the garbage inlet. According to the method, the generation of dioxins can be greatly reduced, materials in the pyrolysis gasification furnace are operated in a fluidized bed manner, pyrolysis gasification can be completed in a short residence time, and the garbage treatment speed is greatly increased.

Description

technical field [0001] The invention relates to the technical field of municipal solid waste treatment, in particular to a municipal solid waste pyrolysis gasification furnace and a pyrolysis gasification method. Background technique [0002] At present, the treatment methods of municipal solid waste mainly include landfill, composting and incineration. Among them, landfill is the most important method for disposing of domestic waste in most cities in my country. It needs to occupy a large amount of land. Most landfills have not undergone harmless treatment. After landfilling, methane and landfill leachate will be produced. The harmful components in it cause serious pollution to the atmosphere, soil, surface water and groundwater, destroy the ecological environment and even endanger human health. Composting requires a high content of organic matter in the garbage, and composting technology also has obvious shortcomings that cannot deal with non-decomposed organic and inorgan...

AI Technical Summary

Problems solved by technology

However, if the incineration conditions are not properly controlled, there will be smoke pollution problems, especially the highly toxic dioxins are likely to be produced, which has become a bottleneck restricting the promotion and application of waste incineration.

Images