Harmless treatment system for city refuse burning, and method thereof

Abstract

The invention relates to a refuse treatment system, especially to a harmless treatment system for city refuse burning, and a method thereof. The harmless treatment system for the city refuse burning has the following structure that: the rear of a screening system is connected with a hand-picking system; the hand-picking system is connected with an incinerator; a refuse outlet end of the screeningsystem is connected with a biomass pool; a high temperature gas outlet end of the incinerator is connected with a gas purification treatment system; a gas outlet end of the gas purification treatmentsystem is connected with a reutilization apparatus. According to the present invention, the process is simple; the residual heat can be used for heat supplying, power generation and the like; the system has characteristics of low investment, low operating cost and no environmental pollution.

Description

technical field [0001] The invention relates to a garbage treatment system, in particular to a system and method for harmless incineration of urban garbage. Background technique [0002] At present, there are many precedents for urban waste incineration. For example, Shanghai invested 760 million yuan to build an incineration system that can handle domestic waste generated by 1.2-1.5 million people per day; , coal is used as an auxiliary fuel, mixed with sand as a carrier, and fluidized wind is used as a power to make it rotate and burn. Its daily processing capacity is 200 tons, and the investment is about 350 million yuan; the waste incineration treatment system of the second Shidong plant in Japan The daily processing capacity is 460 tons per day, which is the processing capacity of two furnaces. The automatic continuous waste incinerator is used to support combustion with oil, and the heat generated is mainly used for power generation. [0003] Although the waste incine...

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Problems solved by technology

[0003] Although the waste incineration systems in the above three big cities can be used to deal with waste, they still have the following disadvantages: the investment in capital construction is too large, most of which is 300-800 million yuan, the technical equipment is complicated, the operation is difficult, and the operating cost is high; Advanced incinerators, but still can not completely burn the garbage, and synthesize dioxins during the low-temperature combustion process at 0-800 ℃, dioxins are discharged into the atmosphere, polluting the environment, due to the above-mentioned technical problems, making them common promotion is limited

[0004] At present, large and small waste landfills have begun to be popularized, but landfills occupy a lot of land, and the land is seriously polluted by seepage. These problems have not yet been solved.

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