Flying ash processing device of fluidized bed incinerator

Abstract

The invention relates to a flying ash processing device of a fluidized bed incinerator. The flying ash processing device comprise a cyclone separator, a flying ash conveying system, a bubble fluidized bed device and a moving bed ash cooler; the cyclone separator is arranged between the fluidized bed incinerator and a tail part flue and is communicated with the bubble fluidized bed device through the flying ash conveying system at the same time; the moving bed ash cooler is communicated with the bubble fluidized bed device; a buried tube heat exchanger is further arranged inside the moving bed ash cooler; the input end of the buried tube heat exchanger is connected with a water feeding pump of the fluidized bed incinerator; and the output end of the buried tube heat exchanger is connected with a coal economizer of the fluidized bed incinerator. With the adoption of the flying ash processing device, the flying ash is effectively captured before the pollutants are accumulated to the surface of the flying ash, and the sensible heat of the flying ash is effectively absorbed, so that the discharge quantity and the processing cost of the flying ash are greatly reduced, the accumulated ash, the abrasion and the corrosion to the heated plane at the tail part of the fluidized bed incinerator are reduced, the resource utilization of the flying ash is realized, the defects that a traditional method is large in capacity-increase and high cost are made up, the sensible heat of the flying ash is effectively used, and the heat economy of the system is improved.

Description

technical field [0001] The invention relates to a treatment device for sludge and fly ash of a fluidized bed incinerator for garbage, and belongs to the technical field of solid waste incineration. Background technique [0002] With the rapid development of the economy, the acceleration of urbanization and the continuous improvement of people's living standards, the generation of urban garbage and sludge in my country is increasing at a rate of 8% to 10% or even more than 10% per year. How to deal with urban sludge and garbage reasonably and effectively has become an environmental protection problem to be solved urgently. At present, municipal sludge is mainly disposed of in three ways: landfill, composting and incineration, while urban waste is mainly disposed of in two ways: landfill and incineration. Among them, the incineration method can reduce the volume of sludge and garbage by 90%, and reduce the volume by 75%. Compared with other treatment methods, it can better ac...

AI Technical Summary

Problems solved by technology

However, this method is expensive, and the strength of the cement clinker produced may be affected by chlorides in the fly ash

So far, there is no relevant report on the technology that can reduce the emission of fly ash and at the same time reduce the enrichment concentration of pollutants, so as to achieve the resource utilization of fly ash

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