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Catalyst capable of simultaneously removing CO, SO2 and NOx

A catalyst, SO2 technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst activation/preparation, etc., to achieve the effect of increasing specific surface area, huge industrial application value, and low cost

Inactive Publication Date: 2020-09-29
BEIJING ZHENJI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no one in the prior art that can remove SO while removing CO 2 and NO x Catalyst Preparation and Related Technology Reports

Method used

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  • Catalyst capable of simultaneously removing CO, SO2 and NOx
  • Catalyst capable of simultaneously removing CO, SO2 and NOx
  • Catalyst capable of simultaneously removing CO, SO2 and NOx

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix 35 parts of montmorillonite clay, 25 parts of zeolite, 1.5 parts of loss-of-ignition agent, 30 parts of diatomaceous earth, 2.5 parts of iron oxide, and 1 part of copper oxide according to the proportion, add appropriate amount of water and stir evenly into mud shape, put it in a cool and dry place to stale naturally;

[0034] (2) Obtain the required catalyst green body by compression molding or extrusion molding the aged mud;

[0035] (3) Dry the green body naturally in the shade for 24 hours, then dry it in a hot air drying oven at 200°C for 2 hours, place the dried catalyst body in a muffle furnace at a temperature of 950°C for 8 hours, and obtain a porous ceramic substrate Catalyst carrier;

[0036] (4) Soak the porous ceramic-based catalyst carrier in nitric acid with a concentration of 35% for acidification, and the soaking time is 2 hours;

[0037] (5) The active components of the catalyst are attached to the surface of the catalyst carrier by equal imp...

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Abstract

The invention discloses a catalyst capable of simultaneously removing CO, SO2 and NOx and a preparation method of the catalyst. According to the catalyst capable of simultaneously removing CO, SO2 andNOx, cheap clay and fly ash are used as catalyst carriers; the invention comprises pre-oxidizing (acidifying) by using concentrated nitric acid, dissolving active ingredients of the low-temperature catalyst by using water, and then enabling metal oxide to be attached to the catalyst carrier capable of simultaneously removing CO, SO2 and NOx by using an equivalent impregnation method, so as to form the catalyst capable of removing CO and SO2 and NOx in low-temperature flue gas purification. The catalyst capable of removing CO, SO2 and NOx at the same time is simple in preparation process and low in cost, the technical effect of removing CO and SO2 and NOx at the same time can be achieved, the treatment cost and treatment difficulty of enterprises are reduced, and the invention has huge industrial application value.

Description

technical field [0001] The invention relates to the field of catalysts and their preparation, in particular to a catalyst containing manganese, cerium, iron and copper oxides that can simultaneously remove CO and SO 2 and NO x catalyst. Background technique [0002] At present, my country has achieved great results in the pollution control of exhaust gas from coal-fired boilers, but the problem of air pollution in some areas where coal-fired boilers are used is still very serious. In such areas, carbon monoxide (CO), sulfur dioxide (SO 2 ) and nitrogen oxides (NO x ) is a pollutant that is listed as a key control. Since the 1970s, my country has successively investigated the SO2 of coal-fired industrial furnaces. 2 , NO and CO emissions have been strictly limited, and with the development of science and technology and economic construction, and the increasing emphasis on ecological environment protection, this limitation has become increasingly strict. [0003] During ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J37/02B01J37/08B01D53/86B01D53/60B01D53/62
CPCB01J23/8892B01J23/002B01J37/0207B01J37/086B01J37/088B01J37/0018B01D53/8637B01D53/864B01D53/865B01J2523/00B01D2258/0283B01J2523/17B01J2523/3712B01J2523/47B01J2523/72B01J2523/842Y02A50/20
Inventor 贾成佘振宝刘长余杨建忠闫禹
Owner BEIJING ZHENJI ENVIRONMENTAL TECH
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