Catalyst carrier, catalyst composite filtering element as well as preparation method and device thereof

Abstract

The invention provides a catalyst carrier, a catalyst composite filtering element as well as a preparation method and a device thereof. A fiber layer of the catalyst carrier is formed by fiber paper shaft rolls and has self support together with an auxiliary carrier with an adhesive property, and in addition, fiber paper has a good filtering property and is good in high temperature stability and low in price; in addition, on one hand, the auxiliary carrier has a fixing function on a main carrier, and the catalyst is prevented from migration or damage in the use process; on the other hand, theauxiliary carrier is also capable of loading active components, the ratio of the loaded active components is increased, and furthermore the catalysis property can be improved; furthermore, the catalyst carrier is simple in preparation process, low in process cost and material cost and excellent in filtering property and catalysis property.

Description

technical field [0001] The invention relates to the technical field of high-temperature gas integrated purification, and more specifically, to a catalyst carrier, a catalyst composite filter element and a preparation method and device thereof. Background technique [0002] In many fields such as biomass gasification, petroleum catalytic cracking, waste incineration, and coal gasification, the gases in various processes and the high-temperature flue gas discharged to the atmosphere generally contain dust particles and gaseous pollutants. The gaseous pollutants are mainly including NO x , SO 2 , VOCs, etc. According to environmental protection requirements, it is necessary to purify the pollutants in the gas. For example, in the "Emission Standards of Air Pollutants for Thermal Power Plants", the emission concentration of particulate matter is required to be no higher than 30mg / m 3 , NO x Not higher than 100mg / m 3 . At present, dust particles are mainly filtered and separ...

AI Technical Summary

Problems solved by technology

[0004] At present, the catalytic composite filter elements used in industrial applications have problems such as large pressure drop, unsatisfactory catalytic performance, short life and high price, which are mainly attributed to a series of problems such as unsatisfactory filter elements used, complicated catalyst loading process, and easy agglomeration of loaded catalysts.

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