Coal-fired coupling garbage incineration system

Abstract

The invention discloses a coal-fired coupling garbage incineration system which comprises a garbage hopper, a feeder, a crusher, a fluidized bed garbage incinerator, a coal hopper, a coal feeder, a coal mill, a pulverized coal furnace, a flue gas ejector, an air preheater and an air feeder. Garbage is combusted in the fluidized bed garbage incinerator after being treated by the crusher, so that the stability and high efficiency of garbage combustion are ensured; coal is combusted in the pulverized coal furnace after being crushed by the coal mill, and high-temperature flue gas generated by pulverized coal combustion is extracted by the flue gas ejector to the fluidized bed garbage incinerator, so that the combustion temperature in the fluidized bed garbage incinerator is increased; and circulating flue gas exhausted by the fluidized bed garbage incinerator is fed into the pulverized coal furnace, and influences on the pulverized coal furnace is small. The system realizes coupling of the fluidized bed incinerator and the pulverized coal furnace, can improve the stability and efficiency of garbage combustion, makes full use of existing coal-fired power generation equipment, reduces the coal consumption of stored coal and electricity and reduces the investment cost for a newly built garbage incineration power plant.

Description

technical field [0001] The invention relates to waste incineration power generation technology and coal-fired power generation technology, in particular to a coal-fired coupled waste incineration system. Background technique [0002] With the continuous development of my country's economy and the gradual improvement of people's living standards, the output and reserves of garbage are increasing rapidly. The stacking of garbage not only causes a waste of space and resources, but also causes great harm to the atmosphere, water bodies and the health of residents. Through thermal decomposition, combustion, melting and other reactions, the waste incineration technology makes the waste undergo high-temperature oxidation and volume reduction to become residue or molten solid matter, which has the advantages of reduction, harmlessness and resource utilization. Waste incineration technology can utilize combustible substances in waste. However, due to the generally low calorific valu...

AI Technical Summary

Problems solved by technology

Waste incineration technology can utilize combustible substances in waste. However, due to the generally low calorific value of waste, this technology has disadvantages such as unstable combustion and low power generation efficiency. In addition, the construction of large waste incineration power plants has huge investment and operating costs. Advanced issues, lack of market competitiveness

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