Alkali-metal-modified carbon-based catalyst used for desulfurization and denitrification and production method and application thereof

Abstract

The invention discloses an alkali-metal-modified carbon-based catalyst used for desulfurization and denitrification. The alkali-metal-modified carbon-based catalyst used for desulfurization and denitrification comprises a carbon material, an active component vanadium and a modifier alkali metal, wherein according to weight percentages of the carbon material, the active component vanadium and the modifier alkali metal, the metal vanadium, on the basis of V2O5, accounts for 0.5%-10% of the catalyst in percentage by weight, the alkali metal accounts for 0.1%-0.5% of the catalyst in percentage byweight, and the rest is the carbon material. The alkali-metal-modified carbon-based catalyst used for desulfurization and denitrification has the advantages that a production method is simple and convenient, the active component is evenly distributed, and the sulfur capacity and the denitrification activity are significantly improved along with a regeneration process.

Description

technical field [0001] The invention relates to a catalyst and a preparation method, in particular to an alkali metal-modified carbon-based catalyst for desulfurization and denitrification, a preparation method and application thereof. technical background [0002] SO emissions from fossil fuel combustion 2 Nitrogen and nitrogen oxides (NOx) are the main causes of acid rain and photochemical smog, and their emissions have seriously exceeded the carrying limit of the atmospheric environment, causing serious damage to the ecological environment and bringing huge economic losses to human beings. Since the 1970s, on the basis of many years of research on the control technology of flue gas pollutants emitted by fossil fuel combustion, researchers have begun to study SO in industrial flue gas. 2 and NOx simultaneous removal technology research. [0003] Synergistic removal of multiple pollutants in flue gas by activated coke dry method can achieve SO 2 Resource utilization, no ...

AI Technical Summary

Problems solved by technology

This method can improve the wear resistance and catalytic activity stability of the modified active coke, but due to the lack of effective dispersion measures, the active components such as vanadium are not uniformly dispersed in the active coke, and are easy to agglomerate in the regeneration high temperature, which makes the bulk phase method The prepared modified activated coke still has the defect that the sulfur capacity and denitrification activity continue to decrease during the regeneration process (CN201611233051.4)

This seriously reduces the durability of vanadium-modified activated coke and the economics of dry-process flue gas synergistic removal of multiple pollutants

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