System and process for preparing SCR (Selective Catalytic Reduction) denitration catalyst from Fenton iron mud

Abstract

The invention discloses a system and a process for preparing an SCR (Selective Catalytic Reduction) denitration catalyst from Fenton iron mud. A carrier fluidized bed and a shuttle kiln are adopted asdrying and calcining equipment toprepare the SCR denitration catalyst, a flue gas outlet of the shuttle kiln is connected with a carrier fluidized bed dryer, and tail gas of the carrier fluidized bed dryer is returned to the shuttle kiln and reutilized. The SCR denitration catalyst is prepared from the Fenton iron mud, the shuttle kiln tail gas is used as a heat source for drying the wet Fenton iron mud, most of the dried tail gas is recycled, the thermal efficiency of the system is greatly improved, and meanwhile, the two environmental problems of Fenton iron mud accumulation and NOx emission of coal-fired flue gas are relieved.

Description

technical field [0001] The invention discloses a system and a process for preparing an SCR denitration catalyst from Fenton's iron slime, which are used for upgrading the quality of Fenton's iron slime. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Fenton’s catalytic oxidation technology is an advanced oxidation technology widely used in the field of sewage treatment at home and abroad. It has the characteristics of rapid response, mild conditions, and wide application range. It is widely used in the treatment of toxic, harmful, and difficult-to-biodegrade industrial organic wastewater middle. However, the Fenton reaction will generate a large amount of iron-containing...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, provide a kind of Fenton's iron slime preparation SCR denitrification catalyst system and technology, can effectively solve Fenton's The disposal of iron slime enables effective utilization of iron resources, and can effectively avoid the secondary pollution of existing vanadium-titanium catalysts, meeting the needs of wide temperature window denitrification under deep peak-shaving conditions of thermal power units

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