Carrier for denitration catalyst

A denitrification catalyst and carrier technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as thermal stability, unstable temperature resistance, unsatisfactory activity, and inferior activity

Active Publication Date: 2013-10-16
CHONGQING MINFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of this denitration catalyst is low, but its activity is not as good as that of noble metal denitration catalysts, but its activity is not particularly ideal, and the thermal stability and temperature resistance of its carrier are unstable.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Carrier for denitration catalyst, including the following composition ratio: TiO 2 : 88-96%, SiO 2 : 3-7%, SO 4 : 1-5%, the raw material is metatitanic acid, and its parameter is BET m 2 / g (≥250), D 50 (um≤2.0), free acid (2-4%), produced through the following steps, ① produce titanium silicon powder by metatitanic acid reaction; ② beating and stirring, add deionized water to the titanium silicon powder and beat until solid The content is 25-40%, while stirring and adding powdered silica (3%-7%); ③ calcining, stirring for 2-4 hours and feeding in a uniform fluid form for calcination, the calcination temperature is 350-680 ° C; ④ pulverization , the product is mechanically crushed to a particle size of D 50 0.8-1.6um granular. 1. The beating solid content is 25-40%, which is conducive to saving water resources and energy; 2. Control the particle size to D 50 0.8-1.6um and crushing with special equipment (micro-powder mill) can greatly improve the extrusion formabi...

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PUM

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Abstract

The invention discloses a catalytic carrier for a denitration catalyst. The carrier adopts metatitanic acid as a raw material, has more lasting thermal stability than other carriers for catalysts at the temperature of 1000 DEG C, can work in harsh environments for a long time, and has a broad-spectrum property in the catalytic ability after being mixed with other metals or metal oxides for forming.

Description

technical field [0001] The invention belongs to substances with catalytic effect, and in particular relates to a carrier for denitrification catalyst. Background technique [0002] Denitration catalyst is a general term used in power plants for the selective catalytic reduction of ammonia, that is, NH 3 -A catalyst in SCR denitrification technology, which can reduce the reaction temperature of nitrogen oxides and ammonia, so that the nitrogen oxides in the flue gas can be easily reduced to nitrogen by ammonia, thereby reducing the emission of nitrogen oxides and reducing nitrogen oxides Air pollution, thereby reducing the harm of acid rain. [0003] Theoretically speaking, without adding any catalyst, the reaction temperature of nitrogen oxides and ammonia gas is about 900°C, and the main components of nitrogen oxides in flue gas are nitrogen monoxide and nitrogen dioxide, which are respectively related to The reaction equation of ammonia gas is as follows, [0004] 4NO+4...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01D53/88B01D53/56
Inventor 范林熊勇沈怀远李兵邵培丽程锡钱
Owner CHONGQING MINFENG CHEM
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