Vanadium-carbon-based catalyst for desulfurization and denitrification, preparation method and application thereof

Abstract

A vanadium carbon-based catalyst for desulfurization and denitrification includes carbon material, active component vanadium, wherein vanadium, represented by V 2 o 5 Calculated, accounting for 0.5%-10% by weight of the catalyst, the rest is carbon materials. The invention has the advantages of simple preparation method, uniform distribution of active components, and remarkable improvement of sulfur capacity and denitrification activity along with the 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. [0002] technical background [0003] 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. [0004] Activated coke dry method integrated removal of various pollutants in flue gas technology can re...

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.

Images