Ceramic catalyst desulfurization, denitrification and dust removal integrated process

Abstract

The invention discloses a ceramic catalyst desulfurization, denitrification and dust removal integrated process, relates to the field of kiln flue gas emission pollutant treatment processes, and provides the following scheme aiming at the problems that kiln emission does not reach the standard, equipment works unstably and the like. According to the integrated process, a high-temperature heat exchanger, a dry desulfurization tower, a settling chamber, a catalyst ceramic filter tube dust remover, a first induced draft fan, a waste heat boiler, a high-temperature electrostatic dust removal chamber, an SCR reactor, a second induced draft fan, a desulfurization system and a chimney are included; and the output end of the high-temperature heat exchanger is connected with the input end of the dry desulfurization tower, and the output end of the dry desulfurization tower is connected with the input end of the settling chamber. By improving the process, the pollutant concentration is reduced, the lower emission requirement is met, the failure rate is reduced, manpower is saved, and environmental pollution and other problems are reduced; and in addition, it can be guaranteed that the environment-friendly emission standard is stably met, and smoke emission is still within the emission standard when a waste heat boiler is shut down and desulfurization and denitrification equipment breaks down.

Description

technical field [0001] The invention relates to the field of kiln flue gas emission pollutant treatment technology, in particular to an integrated technology of ceramic catalyst desulfurization, denitrification and dust removal. Background technique [0002] Desulfurization, denitrification and dust removal technology Selective non-catalytic reduction method denitrification technology, this technology is to use NH3, urea and other reducing agents to spray into the area with a temperature of 850-1100 °C in the furnace, and the reducing agent is rapidly thermally decomposed into NH3 and combined with NOx in the flue gas Through selective reaction, NOx is reduced to nitrogen and water, which effectively solves the problems of smoke emission difficulties and air pollution. [0003] However, the existing flue gas treatment system processes are: high-temperature electrostatic precipitator, SCR reactor, waste heat power generation boiler, limestone-gypsum wet desulfurization equipm...

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Problems solved by technology

[0005] In order to solve the technical problems existing in the background technology, the present invention proposes an integrated process of ceramic catalyst desulfurization, denitrification and dust removal. The present invention reduces the concentration of pollutants by improving the process, achieves lower emission requirements, reduces the failure rate, saves manpower, and reduces environmental pollution. Pollution and other issues, and can ensure that the environmental protection emission standards are met stably, and the flue gas emission is still within the emission standards when the waste heat boiler is shut down and the desulfurization and denitrification equipment fails

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