CN101462067B - Novel SCR granular catalyst - Google Patents
Novel SCR granular catalyst Download PDFInfo
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- CN101462067B CN101462067B CN2009101030268A CN200910103026A CN101462067B CN 101462067 B CN101462067 B CN 101462067B CN 2009101030268 A CN2009101030268 A CN 2009101030268A CN 200910103026 A CN200910103026 A CN 200910103026A CN 101462067 B CN101462067 B CN 101462067B
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Abstract
The invention discloses a novel SCR granular catalyst. According to the mass percentage, the catalyst comprises 70 to 90 percent of honeycomb granular catalyst matrix, 8 to 23 percent of TiO2, 1 to 5 percent of V2O5 and 1 to 2 percent of adhesive. The novel SCR granular catalyst is prepared by mixing the honeycomb granular catalyst matrix and the adhesive which are easy to obtain with the TiO2 and the V2O5 and then performing a simple process, has good catalysis on NOX and good catalytic effect, can meet the need of flue gas denitrification, is environment-friendly, economical and practical, reduces the using amount of the TiO2 compared with a common honeycomb catalyst, ensures that the cost for the catalyst is reduced, has simpler preparation technology, and is suitable to promote the industry and form mass production capacity, thereby adapting to the urgent need of pushing the treatment work of atmospheric pollution.
Description
Technical field
The present invention relates to a kind of catalyst, particularly a kind of Novel SCR granular catalyst.
Background technology
Along with the fast development of science and technology, the influence of environment is also more and more come into one's own, the discharge standard of environment also requires more and more stricter.These requirements have just caused the large-scale industrial application of SCR and SNCR technology, and the existing processes technology combines with low NOx boiler, can subdue the capacity of NOx significantly, so also can effectively subdue the pollution of ground level ozone concentration and acid rain.
Developing countries such as China, the exhaust emission of NOx is not then taked effective treatment measures as yet in the flue gas.In the prior art, denitrification equipment investment and operating cost are big, complex process, and the operation and maintenance difficulty is difficult to apply on a large scale.
The denitrification catalyst type of prior art is honeycomb fashion, board-like and corrugated plate dst, and three types catalyst mainly is by monolithic extruded or apply a large amount of TiO on the stainless steel carrier
2And V
2O
5Form, matrix wherein is mainly TiO2, the price comparison costliness, and cost is higher.Chinese patent publication number CN 1475305A discloses a kind of while desulphurization denitration catalyst and application process, and its main component is active carbon and a spot of V
2O
5Though the scheme that this patent is announced has reduced cost to a certain extent, its catalytic effect is not good.
Therefore, need a kind of SCR pellet type catalyst, to NO
XGood catalytic action is arranged, environmental friendliness and economical and practical, and cost is low, and preparation technology is comparatively simple, is applicable to the propelling industry and forms the large-scale production ability, thereby be adapted to promote pressing for of air contaminant treatment work.
Summary of the invention
In view of this, in order to address the above problem, the invention provides a kind of Novel SCR granular catalyst, to NO
XGood catalytic action is arranged, and excellent catalytic effect can satisfy the needs of denitrating flue gas, environmental friendliness and economical and practical, and cost is low, and preparation technology is comparatively simple, be applicable to the propelling industry and form the large-scale production ability, thereby be adapted to promote pressing for of air contaminant treatment work.
Novel SCR granular catalyst of the present invention comprises following component by mass percentage:
Cellular particle shape catalyst matrix 70～90%
TiO
2 8～23％
V
2O
5 1～5％
Binding agent 1～2%;
Described cellular particle shape catalyst matrix is one or more the mixture in bauxite, corundum or the carborundum, and binding agent is one or more the mixture in industrial syrup, carboxymethyl cellulose, starch, the polyvinyl alcohol.
Further, matrix material is a carborundum, and binding agent is industrial syrup;
Further, comprise following component by mass percentage:
Cellular particle shape catalyst matrix 80%
TiO
2 17％
V
2O
5 2％
Binding agent 1%;
Further, catalyst is by with dried cellular particle shape catalyst matrix and TiO
2, V
2O
5Make with binding agent mixing and calcining;
Further, the baking temperature of described cellular particle shape catalyst matrix is 105 ℃, and be 2h drying time; Cellular particle shape catalyst matrix and TiO
2, V
2O
5With the calcining heat of the mixture of binding agent be 800 ℃, calcination time is 6h.
Beneficial effect of the present invention: Novel SCR granular catalyst of the present invention, adopt the cellular particle shape catalyst matrix, binding agent and the TiO that obtain easily
2, V
2O
5Mix after simple process is made, to NO
XGood catalytic action is arranged, and excellent catalytic effect can satisfy the needs of denitrating flue gas, and environmental friendliness and economical and practical has reduced TiO than normal cellular shape catalyst
2Consumption descends the catalyst cost, and preparation technology is comparatively simple, is applicable to the propelling industry and forms the large-scale production ability, thereby be adapted to promote pressing for of air contaminant treatment work.
The specific embodiment
Embodiment one
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 80%
TiO
2 17％
V
2O
5 2％
Binding agent 1%;
Wherein, cellular particle shape catalyst matrix is a carborundum, and binding agent is industrial syrup;
In the present embodiment, with carborundum cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 85%.
Embodiment two
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 70%
TiO
2 23％
V
2O
5 5％
Binding agent 2%;
Wherein, cellular particle shape catalyst matrix is a carborundum, and binding agent is a carboxymethyl cellulose.
In the present embodiment, with carborundum cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 83.1%.
Embodiment three
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 90%
TiO
2 8％
V
2O
5 1％
Binding agent 1%;
Wherein, cellular particle shape catalyst matrix is a carborundum, and binding agent is a starch;
In the present embodiment, with carborundum cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 80.1%.
Embodiment four
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 80%
TiO
2 14％
V
2O
5 3％
Binding agent 2%;
Wherein, cellular particle shape catalyst matrix is a bauxite, and binding agent is a polyvinyl alcohol;
In the present embodiment, with bauxite cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 81.4%.
Embodiment five
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 90%
TiO
2 8％
V
2O
5 1％
Binding agent 1%;
Wherein, cellular particle shape catalyst matrix is a bauxite, and binding agent is industrial syrup;
In the present embodiment, with bauxite cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 82.4%.
Embodiment six
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 70%
TiO
2 23％
V
2O
5 5％
Binding agent 2%;
Wherein, cellular particle shape catalyst matrix is a bauxite, and binding agent is a starch;
In the present embodiment, with bauxite cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 80.7%.
Embodiment seven
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 80%
TiO
2 18％
V
2O
5 1％
Binding agent 1%;
Wherein, cellular particle shape catalyst matrix is a corundum, and binding agent is a carboxymethyl cellulose;
In the present embodiment, with corundum cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 81.6%.
Embodiment eight
In the present embodiment, Novel SCR granular catalyst comprises following component by mass percentage:
Cellular particle shape catalyst matrix 85%
TiO
2 9％
V
2O
5 5％
Binding agent 1%;
Wherein, cellular particle shape catalyst matrix is the mixture of bauxite, corundum and carborundum, and binding agent is the mixture of industrial syrup, carboxymethyl cellulose, starch, polyvinyl alcohol.
In the present embodiment, with corundum cellular particle shape catalyst matrix at 105 ℃ of following dry 2h, with itself and TiO
2, V
2O
5And the binding agent mixing, and, make cellular particle shape denitrating catalyst at 800 ℃ of calcining 6h.
The catalyst of present embodiment places in the fixed bed reactors, NO
XConversion ratio is 83.7%.
Cellular particle shape catalyst matrix and binding agent are not limited to the described kind of above embodiment, are applicable to that the cellular particle shape catalyst matrix of catalyst field and binding agent can both reach goal of the invention.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. SCR pellet type catalyst is characterized in that: made by following raw material by mass percentage:
Cellular particle shape catalyst matrix 80%
TiO
2 17％
V
2O
5 2％
Binding agent 1%;
Described cellular particle shape catalyst matrix is a carborundum, and binding agent is industrial syrup;
Described SCR pellet type catalyst is with dried cellular particle shape catalyst matrix and TiO
2, V
2O
5Make with binding agent mixing and calcining, the baking temperature of described cellular particle shape catalyst matrix is 105 ℃, and be 2h drying time; Cellular particle shape catalyst matrix and TiO
2, V
2O
5With the calcining heat of the mixture of binding agent be 800 ℃, calcination time is 6h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101030268A CN101462067B (en) | 2009-01-08 | 2009-01-08 | Novel SCR granular catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101030268A CN101462067B (en) | 2009-01-08 | 2009-01-08 | Novel SCR granular catalyst |
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| Publication Number | Publication Date |
|---|---|
| CN101462067A CN101462067A (en) | 2009-06-24 |
| CN101462067B true CN101462067B (en) | 2011-06-22 |
Family
ID=40802997
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101030268A Active CN101462067B (en) | 2009-01-08 | 2009-01-08 | Novel SCR granular catalyst |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078809B (en) * | 2010-11-22 | 2012-05-23 | 重庆大学 | Selective catalytic reduction (SCR) flue gas denitrification catalyst and preparation method thereof |
| CN102698738B (en) * | 2012-06-01 | 2013-12-18 | 重庆大学 | SCR (Selective Catalytic Reduction) denitrification catalyst containing K2O and preparation method thereof |
| CN104190399B (en) * | 2014-07-28 | 2016-08-24 | 漯河兴茂钛业股份有限公司 | A kind of denitration dust collecting integral material and preparation method thereof |
| CN105521806A (en) * | 2015-12-14 | 2016-04-27 | 安徽省元琛环保科技有限公司 | SCR flue gas denitration catalyst and preparation method thereof |
| CN115591542A (en) * | 2021-07-09 | 2023-01-13 | 山东亮剑环保新材料有限公司（Cn） | Denitration catalyst and production method thereof |
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2009
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