Molecular sieve catalytic inorganic fiber, preparation method and dedusting and denitration integrated application thereof

Abstract

The invention provides a molecular sieve catalytic inorganic fiber, a preparation method and dedusting and denitration integrated application thereof, the preparation method of the molecular sieve catalytic inorganic fiber obtains the molecular sieve catalytic inorganic fiber through in-situ growth of an ion exchange type molecular sieve on an inorganic fiber, the molecular sieve catalytic inorganic fiber has a wide denitration temperature window, the molecular sieve catalytic inorganic fiber also has relatively strong water resistance and sulfur resistance, and the catalytic components are firmly combined on the inorganic fiber in manners of chemical bonds such as Si-O-Si and Si-O-Al and are not easy to fall off, so that the molecular sieve catalytic inorganic fiber can be mixed with original fiber and subjected to compression molding treatment to obtain a dust removal and denitration module; the fiber can be blended with original fiber, and a dedusting and denitration module is obtained through needling treatment so that dedusting and denitration integrated application of flue gas purification in the non-electric industry can be realized.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a molecular sieve catalytic inorganic fiber, a preparation method thereof and an integrated application of dust removal and denitrification. Background technique [0002] Nitrogen oxides (NO X ) is an important class of air pollutants, which can lead to pollution such as smog, photochemical smog and acid rain. At present, stationary source emissions of nitrogen oxides in my country still account for a relatively large proportion. Under the condition that most coal-fired power plants achieve ultra-low emissions, NOx in non-electric industries X Emission control has become one of the key areas to tackle at this stage. Ammonia selective catalytic reduction technology (NH 3 -selective catalytic reduction, NH 3 -SCR) is to control NO X The main technology of emission has been widely used in power plant boilers. However, on the one hand, the flue gas composition of ...

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Problems solved by technology

However, the synthesis method of this catalytic filter material is relatively complicated, and the types of catalysts are limited, which is not conducive to large-scale promotion and use.

[0005] In recent years, as ion-exchange molecular sieve catalysts have shown good denitrification performance at medium and low temperatures, researchers have loaded them into dust removal modules and applied them in the field of flue gas purification in non-electric industries. Although they have shown good dust removal Denitrification performance, but there is also the problem that the catalyst is easy to fall off

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