Vanadium-carbon-based catalyst for desulfurization and denitrification as well as preparation method and application of vanadium-carbon-based catalyst

Abstract

The invention discloses a vanadium-carbon-based catalyst for desulfurization and denitrification comprising a carbon material and vanadium serving as an active component, wherein measured by V2O5, vanadium accounts for 0.5%-10% of the weight of the catalyst, and the balance is the carbon material. The vanadium-carbon-based catalyst has the advantages that the preparation method is simple and convenient, the active component is uniformly distributed, and the sulfur capacity and denitrification activity are remarkably improved with a regeneration process.

Description

technical field [0001] The invention relates to a vanadium-carbon-based catalyst and a preparation method thereof, in particular to a vanadium-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 1960s, on the basis of many years of research on the control technology of flue gas pollutants emitted by fossil fuel combustion, German researchers have begun to study SO in industrial flue gas. 2 and NOx simultaneous removal technology research. [0003] Activated coke dry method integrated removal of various pollutants in flue gas technology can realize SO...

AI Technical Summary

Problems solved by technology

This method can improve the wear resistance and catalytic activity stability of modified active coke, but due to the lack of effective dispersion measures, the active components are directly dissolved and added without treatment, resulting in the dispersion of active components such as vanadium in the active coke Inhomogeneous, which makes the modified activated coke prepared by the bulk method still have the defect that the sulfur capacity and denitrification activity continue to decline after regeneration (CN201611233051.4)

At the same time, the carbonization, activation, and regeneration conditions used in the currently disclosed vanadium-modified activated coke are not strictly controlled by the atmosphere and the regeneration temperature is too low, resulting in low catalyst activity.

These defects seriously reduce the activity and durability of vanadium-modified activated coke and the economics of dry-process synergistic removal of multiple pollutants in flue gas.

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