Garbage incinerator sludge direct mixing blending combustion method and system

Abstract

The invention relates to a garbage incinerator sludge direct mixing blending combustion method and system. The garbage incinerator sludge direct mixing blending combustion system comprises an unloading unit, a temporary storage stirring unit, a transferring unit, an incineration unit, a heat energy conversion unit, an electricity generation unit and a smoke treatment unit. The temporary storage stirring unit stores the mixture of sludge and domestic garbage, and the sludge in the mixture accounts for 10-15%. The transferring unit is used for transferring the mixture from the temporary storage unit into the incineration unit, high-temperature smoke generated by the mixture in the incineration unit enters the heat energy conversion unit, the heat energy of the high-temperature smoke enables water in the heat energy conversion unit to from high-temperature and high-pressure steam, and the steam drives the electricity generation unit to generate electricity. Smoke coming from the heat energy conversion unit enters the smoke treatment unit, is subjected to harmless treatment in the smoke treatment unit and then is exhausted into the atmosphere. The garbage incinerator sludge direct mixing blending combustion method and system realize mixed incineration of the sludge and the domestic garbage, clean electricity is produced through combustion waste heat, and the smoke is exhausted in an environmental protection mode after being effectively treated.

Description

technical field [0001] The present application relates to a method and system for directly mixing and blending waste incinerator sludge, which can be widely used in the fields of municipal sludge treatment and waste incineration. Background technique [0002] With the increase of sewage treatment facilities in our country, the improvement of treatment rate and the deepening of treatment degree, the sludge output of sewage treatment plants has increased sharply. Taking Beijing as an example, in 2015, the sludge output in Beijing reached 5,000 tons / day (moisture content 80%). Mud (water content 80%) output will reach 2 million tons. At present, less than 50% of the sludge has been disposed of as compost and building materials, and the rest of the sludge is only temporarily piled up, lacking effective final disposal. Sludge contains pathogens, heavy metals and other toxic and harmful substances. Without effective treatment and disposal, it is very easy to cause secondary poll...

AI Technical Summary

Problems solved by technology

At present, less than 50% of the sludge has been disposed of as compost and building materials, and the rest of the sludge is only temporarily piled up, lacking effective final disposal

Therefore, if the proportion of sludge mixed is too high, the water content of the mixed fuel of sludge and domestic waste will increase, the calorific value will decrease, and the power generation per unit weight will decrease. If the proportion of mixed incineration is too high, it will even fail to ignite and affect the mixing Combustion operation

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