Coal-fired flue gas dust-removing desulfurization and denitrification integrated compound technology system

Abstract

The invention relates to a coal-fired flue gas dust-removing desulfurization and denitrification integrated compound technology system which is arranged as complete equipment for high-temperature flue gas dust-removing desulfurization and denitrification and waste heat utilization. A ceramic multi-tube dust cleaner is used for roughly removing dust and desulfurizing; a ceramic filtering film filter is used for deeply purifying, removing dust and denitration; the waste heat of the flue gas is utilized by a heat exchanger to change cold air into hot air; the hot air enters into a boiler combustion opening to support the combustion; metal and nonmetal oxides serve as the manufacturing materials of a micro-pore ceramic filtering pipe; the manufacturing materials serve as the catalyst main body and the carrier; a high-temperature ceramic method is combined for sintering and preparing the catalyst under certain temperature. The coal-fired flue gas dust-removing desulfurization and denitrification integrated compound technology is a high-temperature dust-removing desulfurization and denitrification integrated technique, is especially used for replacing an electric dust remover for purifying the coal-fired flue gas, is free from explosion hazard and is safe and reliable; the investment is saved; utilization for the heat energy is increased; the energy-saving effect is enhanced; the design is simple; the structure is reasonable; the coal-fired flue gas dust-removing desulfurization and denitrification integrated compound technology system is an energy-saving, emission-reducing, transforming and upgrading trans-century brand product made in China at present.

Description

technical field [0001] The patent of the present invention relates to a coal-fired boiler flue gas simultaneous dedusting, desulfurization and denitrification composite process system. Background technique [0002] Current industrial dedusting and SO x / NO x Removal, the existing process is the wet limestone-gypsum method WFGD and dry SCR after dust removal. The three technologies work independently. The three sets of equipment are bulky, complex in structure, large in floor area, and high in investment and operating costs. . In order to reduce the cost of flue gas purification and meet the needs of power plants, the new technology of combined desulfurization and denitrification has become the trend of flue gas purification. [0003] The national environmental protection requirements start from July 1, 2014, and new enterprises start from the date of implementation of the standards. [0004] Smoke and dust emission concentration of thermal power boilers: [0005] Coal-f...

AI Technical Summary

Problems solved by technology

[0010] At present, domestic and foreign coal-fired flue gas (including coal gas) dedusting, desulfurization and denitrification processes mostly use separate desulfurization and denitrification technology, the process is complicated, the equipment occupies a large area, and the investment and operation costs are high. Research and development of a new generation of advanced technology, economical and reasonable combined desulfurization and denitrification process System becomes an inevitable trend

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