Small-aperture corrugated catalyst for fuel gas denitration, and preparation method thereof

A corrugated, catalyst technology, applied in the field of flue gas denitrification, can solve the problems of increased project cost, difficult extrusion molding, low yield, etc., and achieve the effects of extending service life, enhancing thermal stability, and good thermal stability.
CN110876942AInactive Publication Date: 2020-03-13QIYUAN XIAN DAE YOUNG ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
QIYUAN XIAN DAE YOUNG ENVIRONMENTAL PROTECTION TECH CO LTD
Publication Date
2020-03-13
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention belongs to the technical field of flue gas denitration, and relates to a small-aperture corrugated catalyst for gas denitration, and a preparation method thereof. The catalyst adopts a glass fiber mat as a skeleton base material, one or two of titanyl sulfate and silicon oxide as a carrier, one or two of ammonium heptamolybdate and cerium salt as an assistant and one or more of a manganese salt, an iron salt and a chromium salt as an active component precursor and deionized water; and the catalyst comprises, by weight, 90 parts of the carrier, 1.6-6.5 parts of an active componentprecursor, 3.8-5.1 parts of the assistant and 120-200 parts of deionized water. The catalyst adopts the titanyl sulfate and silicon oxide as the carrier, so that the catalyst is ensured to have goodthermal stability at a high temperature, and crystal form change and sintering are avoided; the manganese salt, the iron salt and the chromium salt are used as active components, so hole blockage caused by high solution viscosity can be avoided; and the ammonium heptamolybdate and the cerium salt are used as modification aids, so that the catalyst has an extremely high catalytic performance in anSCR reaction.
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Description

technical field

[0001] The invention belongs to the technical field of flue gas denitrification, and relates to a denitrification catalyst, in particular to a small-aperture corrugated catalyst for gas denitrification and a preparation method thereof. Background technique

[0002] At present, the flue gas emitted by boilers fueled by natural gas has the characteristics of high temperature, low sulfur content, and almost no dust. Compared with coal-fired boilers, gas-fired boilers have the advantages of high combustion efficiency and low pollutant emission concentration. However, gas boilers also produce a small amount of nitrogen oxides during combustion. With the increasingly stringent air pollution control policies, in addition to adopting denitrification measures such as staged combustion and fuel reburning, flue gas denitrification such as SCR must be used to achieve emission standards.

[0003] Due to the mature technology at home and abroad, SCR denitrification has b...

Claims

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