Sludge resource utilization device and method thereof

Abstract

The invention relates to a sludge resource utilization device and method. The sludge resource utilization device comprises a sludge storage and delivery unit, a pyrolysis reaction unit, a dust removalunit, a pyrolysis gas injection unit, an industrial boiler or an industrial kiln furnace, a sludge coke collection and feeding unit, and an automatic control unit, wherein the automatic control unitcontrols the above-mentioned units to work. As for the device and method, according to the characteristics of high volatile matter and nitrogen content in sludge, the high-temperature flue gas produced in the industrial boiler or kiln furnace is used as a heat source and carrier gas, the sludge is pyrolyzed at a certain temperature to produce pyrolysis gas and sludge coke, subsequently, the flue gas mixed with the pyrolysis gas is reintroduced into the combustion zone of the industrial boiler or kiln furnace, the pyrolysis gas is used as a reburning fuel and a gas denitration agent to remove the NOx in the flue gas while achieving energy utilization, and the produced sludge coke can be used as a reburning fuel and a solid denitrition agent for flue gas denitrition of the industrial boileror kiln furnace to play a role in removing the NOx while replacing part of coal.

Description

technical field [0001] The invention relates to the field of solid waste treatment, in particular to a sludge resource utilization device and a method thereof. Background technique [0002] With the increase of domestic sewage treatment rate in our country year by year, the amount of sludge produced by urban sewage plants is increasing day by day. According to statistics, at present, 30-40 million tons of municipal sludge (water content 80%) is produced in my country every year. Studies have shown that urban sludge has complex components, including heavy metals, organic matter, bacteria, viruses and other toxic and harmful substances to the human body. If not properly disposed of, it will pollute the ecological environment and seriously threaten human health. Therefore, how to dispose of sludge economically, efficiently and safely is another important environmental problem facing our country. At present, the common sludge disposal methods at home and abroad mainly include ...

AI Technical Summary

Problems solved by technology

[0004] In view of the lack of domestic sludge resource disposal and industrial boiler or kiln flue gas denitrification technology, it is urgent to propose a sludge resource utilization device and its method to solve the above two problems

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