Refuse incineration power generation process and refuse incineration power generation equipment

Abstract

The invention discloses a refuse incineration power generation process, which includes the steps: 1 conveying refuse into a screening machine and screening out incombustible hard materials in refuse; 2 conveying the screened refuse into a crusher for crushing; 3 conveying the crushed refuse into a dryer for drying and leading the water content of the dried refuse to be lower than 15%; and 4 directly conveying the dried refuse into a thermal power incinerator for incineration power generation. The invention further discloses refuse incineration power generation equipment, which comprises the screening machine, the crusher, the dryer and the thermal power incinerator which are sequentially connected. The water content of the dried refuse is lower than 15%, the dried refuse can be directly used for a thermal plant for power generation without adding any combustion improvers, the dried refuse can combust in a short time to generate heat, power generation efficiency is high, and the combustion time of the dried refuse is about three times shorter than that of conventional refuse added with combustion improvers.

Description

technical field [0001] The invention relates to a domestic garbage treatment technology, in particular to a garbage incineration power generation process and its equipment. Background technique [0002] The principles of waste disposal are harmless, volume reduction, and recycling. Waste incineration power generation can save a lot of land resources because it greatly reduces landfills, and it also reduces the air pollution of landfills to groundwater and the surrounding environment of landfills. The existing waste incineration power generation process, such as the Chinese invention patent with the publication number CN1844744B, firstly sorts and crushes the collected garbage, then evaporates and leaches the sorted and broken garbage, and then evaporates the water Finely pulverize the leached garbage and add a combustion aid to extrude and granulate, then dry the extruded and granulated garbage, and finally burn the dried garbage and use the waste heat of the exhaust gas to...

AI Technical Summary

Problems solved by technology

Since domestic waste contains a large amount of water and has a low calorific value, such a waste incineration power generation process cannot effectively remove the water contained in the waste when drying the waste, and the dried waste still contains relatively high A large part of the moisture makes the dried garbage unable to be directly burned, and a certain amount of combustion accelerant must be added, which increases the cost of garbage incineration and reduces the utilization rate of garbage incineration heat, and the crushed garbage and combustion accelerant are mixed Post-extrusion granulation, the density of the extruded waste is high, which increases the difficulty of subsequent drying, makes the moisture content after drying high, and prevents the extruded waste from fully contacting with oxygen, making it difficult to send it into the combustion chamber. The garbage in the furnace burns slowly, the heat generated per unit time is small, and the power generation efficiency is low

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