Fluidized bed combustion furnace and combustion method

Abstract

The invention discloses a fluidized bed combustion furnace and a combustion method. The fluidized bed combustion furnace comprise a fluidized combustion area and a rotary drying and layer combustion area; a material inlet of a fluidized bed is arranged on the rotary drying and layer combustion area, and the rotary drying and layer combustion area communicates with the fluidized combustion area; the rotary drying and layer combustion area is used for realizing rotary drying and layer combustion of materials; and the fluidized combustion area is used for carrying out fluidized combustion on thematerials which have passed through the rotary drying and layer combustion area. The materials enter the combustion furnace through the material inlet of the fluidized bed, and are firstly stacked inthe rotary drying and layer combustion area for rotation, drying and partial layer combustion, and continuously input materials extrude the materials subjected to drying and layer combustion out of the rotary drying and layer combustion area and enter the fluidized combustion area for fluidized combustion. By means of the technical scheme in the invention, the problems that in an existing fluidized bed combustion technology, the requirement on the particle size of materials is high, crushing treatment is needed firstly, the energy consumption is large, and the residence time of fuel in a furnace is too short, so that large-particle materials and high-humidity materials cannot be fully combusted are solved.

Description

technical field [0001] The invention relates to the fields of energy and environmental protection, in particular to a fluidized bed combustion furnace and a combustion method. Background technique [0002] In recent years, with the advancement of the country's ecological civilization construction, how to rationally, effectively, harmlessly and resourcefully dispose of large amounts of solid waste such as municipal solid waste and agricultural and forestry biomass has attracted widespread attention from the whole society, and related technology research has also become an energy resource. Research hotspots in the field of environmental protection. [0003] The use of boiler equipment for incineration heat utilization is one of the main methods for efficient treatment of this type of solid waste, which has a series of advantages such as significant volume reduction effect and energy heat recovery and utilization. [0004] Fluidized bed combustion technology is a combustion he...

AI Technical Summary

Problems solved by technology

[0012] By providing a fluidized bed combustion furnace and a combustion method, the present application solves the problem that the existing fluidized bed combustion furnace technology has high requirements on the particle size of the material and needs to be crushed first. The problem that materials with large particle size cannot be completely and fully burned

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