Bypass power generation process and system for dry-process rotary kiln co-processing of wet waste

Abstract

The invention discloses a bypass power generation process and system of dry-process rotary kiln cooperative processing of wet garbage. According to the process, the wet garbage is fed into a C5 discharge pipe, high-temperature alkali powder inside the C5 discharge pipe rapidly dries and alkalifies the garbage, the dry and combustible garbage enters a kiln tail smoke chamber along with the powder to be rapidly gasified and combust, high-temperature steam and combustion emissions generated by combustion are pumped into a bypass settlement flue, are processed by the bypass settlement flue and a bypass draught fan and are mixed into exhaust gas waste heat of a grate cooler head, then the blast capacity and the blast temperature are adjusted, then a steam boiler produces steam power for power generation, garbage not combusting out in time and ash combusting out enter a rotary kiln along with raw power materials to be combusted to be clinker, and hydrocarbon not combusting out in time ascends into a decomposing furnace to continue to combust out. The invention further discloses the bypass power generation system of the dry-process rotary kiln cooperative processing of the wet garbage. The method and system can solve the problems that urban life garbage affects the kiln condition and coal consumption is increased, and can effectively eliminate the problem that a kiln system is blocked by water and chlor-alkali in the garbage.

Description

technical field [0001] The invention relates to a power generation process and system for incinerating urban domestic waste, in particular to a power generation process and system for drying and incinerating wet urban domestic waste in dry rotary kiln production. Background technique [0002] Domestic waste incineration power generation technology has reached maturity, but one investment is large. Even if the imported technology is digested and absorbed by domestically produced equipment lines with mature large-scale treatment of waste, the investment is still 400,000 to 600,000 yuan / ton. Equipment, large-scale treatment of the most stable, high calorific value of domestic waste incineration power generation unit investment per kWh still reaches 10,000-20,000 yuan / kWh, which is much higher than coal power investment of 7,000 yuan / kWh, and oil must be burned Ignition or combustion-supporting; second, it is very adaptable to small-scale or very small-scale domestic waste such ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a dry-process rotary kiln co-processing wet garbage bypass power generation process and system, which can solve the impact of urban domestic garbage on kiln conditions and coal consumption. Increase the problem, effectively eliminate the problem of sticking and clogging of the kiln system caused by moisture in the garbage and chlor-alkali, and can generate excessively stable 1000-1200 ℃ high-temperature waste gas waste heat for stable power generation without affecting the original waste heat power generation system, completely eliminating waste slag and waste gas , waste water and toxic and harmful substances, and is suitable for domestic waste of different scales and characteristics in cities, counties and towns, with small investment and good economy

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