Waste incineration power station flue gas purification treatment device

Abstract

The invention discloses a waste incineration power station flue gas purification treatment device which comprises a flue gas purification device, a flue gas heating device, an SCR denitration device and a flue gas air preheater, an inlet of the flue gas purification device is used for being connected with a garbage incinerator. An outlet of the flue gas purification device is connected to an inletof the flue gas heating device, an outlet of the flue gas heating device is connected to an inlet of the SCR denitration device, an outlet of the SCR denitration device is used for being connected toa chimney after passing through the flue gas air preheater, and the flue gas air preheater is used for being connected with the garbage incinerator. In this scheme, the efficient purification of theflue gas is effectively ensured; preheating of the flue gas air preheater is achieved through flue gas waste heat, steam heating of the flue gas heating device meets the temperature rising requirementof SCR denitration, air is heated, multiple purposes are achieved through one steam, and therefore consumption of auxiliary steam of a power station is reduced, the power generation amount of the power station is increased, and meanwhile the requirement for ultra-clean emission of flue gas is met.

Description

technical field [0001] The invention relates to the technical field of waste incineration power plants, in particular to a flue gas purification treatment device for waste incineration power plants. Background technique [0002] With the steady growth of my country's population, continuous advancement of urbanization and economic development, the generation of domestic waste in my country continues to increase, and the demand for disposal is increasingly strong. The harmless treatment of garbage is mainly divided into three methods: incineration, landfill and composting. Among them, incineration has the advantages of high processing efficiency, small footprint, and relatively small impact on the environment, and is the fastest growing segment. [0003] With the increasingly stringent environmental protection requirements, waste incineration flue gas emissions have begun to implement ultra-clean emission standards, and waste incineration flue gas NO x In order to achieve ul...

AI Technical Summary

Problems solved by technology

About 15% of the steam generated by waste incineration needs to be used for air preheating and cannot be used for power generation

However, if it must be arranged at the tail of the waste heat boiler, it is necessary to choose expensive corrosion-resistant materials or do effective anti-corrosion treatment. The equipment is expensive, and it is not easy to ensure the heat exchange effect and stable operation of the equipment.

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