CN103638980A - Denitrification catalyst - Google Patents
Denitrification catalyst Download PDFInfo
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- CN103638980A CN103638980A CN201310588022.XA CN201310588022A CN103638980A CN 103638980 A CN103638980 A CN 103638980A CN 201310588022 A CN201310588022 A CN 201310588022A CN 103638980 A CN103638980 A CN 103638980A
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Abstract
The present invention discloses a denitrification catalyst, which is characterized in that the denitrification catalyst is prepared from the following components, by weight fraction: 25-35 parts of molybdenum trioxide, 10-18 parts of tungsten trioxide, 55-80 parts of titanium dioxide, 2-5 parts of vanadium pentoxide, 6-17 parts of limestone, 2.5-6 parts of stearic acid, 2.5-3 parts of glass powder, 3.5-5 parts of inorganic silica gel, 2.5-3.5 parts of polyethylene, and 0.5-1.5 parts of paraffin. According to the present invention, the denitrification catalyst has high compressive strength, is not easily subjected to powdering so as to prolong a service life of the catalyst, and has increased porosity so as to increase catalysis efficiency and reduce catalyst consumption.
Description
Technical field:
The present invention relates to a kind of denitrating catalyst.
background technology:
Nitrogen oxide (NOx) is a kind of atmosphere pollution with very big harm, to health and animals and plants existence, all can cause certain injury, as form acid rain, photochemical fog etc., in environmental consciousness with require more and more stronger today, how to remove the discharge of nitrogen oxide, become more and more urgent problem, there is research data to show, if continue not strengthen the improvement to nitrogen oxides in effluent, the total amount of nitrogen oxide and the proportion in atmosphere pollution all will rise, and likely replace sulfur dioxide and become the major pollutants in atmosphere.For stationary source NOx control technology mainly by two classes: a class is Combustion Process Control technology, be characterized in the generation of NOx in control combustion process, the selection, the operation that comprise the type of furnace and design parameter are adjusted and NOx combustion technology, with this, carry out the nitrogen oxide of fuel type in control combustion process, heating power type and three kinds of mechanism of Quick-type; Another kind of is control technology, i.e. the NOx technology of various flue gases after burning.Be characterized in the NOx having generated in flue gas be fixed up or be reduced to N2.China's denitrating flue gas project is started late
At present, the nitrogen oxide of China mainly produces from coal combustion and industrial smog discharge, although tradition can be removed nitrogen oxide to a certain extent for removing the catalyst of nitrogen oxide, but, still exist catalyst strength low, easily efflorescence, service life are short, and manufacturing process is not easy shaping and demoulding, and porosity is undesirable, catalytic efficiency is low, catalyst amount is large, high in cost of production is not enough.
SCR method is the most widely used gas denitrifying technology of current business, and wherein the preparation of catalyst production is most important part, and its catalytic performance directly has influence on the whole denitration effect of SCR.Selecting of catalyst is the most important thing.
Summary of the invention
Shortcoming for catalyst in prior art of the present invention, provides a kind of denitrating catalyst.
A kind of denitrating catalyst of the present invention, is characterized in that: described catalyst is prepared from by each component of following weight fraction:
Molybdenum trioxide 25-35 part;
Tungstic acid 10-18 part;
Titanium dioxide 55-80 part
Vanadic anhydride 2-5 part;
Lime stone 6-17 part;
Stearic acid 2.5-6 part;
Glass dust 2.5-3 part;
Inorganic silica gel 3.5-5 part;
Polyethylene 2.5-3.5 part;
Paraffin 0.5-1.5 part.
Preferably, described molybdenum trioxide is 30-35 part.
Preferably, described stearic acid is 3-4 part.
Preferably, described lime stone is 13-15 part.
Advantage of the present invention is: the use of (1) molybdenum trioxide and tungstic acid can hinder the sintering of anatase and the forfeiture of specific area, can also limit the salinization of its sulfuric acid.
(2) molybdenum trioxide can improve the activity of catalyst, can also prevent that in flue gas, As causes catalyst poisoning.
(3) glass dust, inorganic silica gel, polyethylene, the synergy of paraffin can be gained in strength, and reduces cracking, strengthens caking property.
the specific embodiment
The invention is further illustrated by the following examples, but the present invention is not only confined to following examples.
Embodiment 1
The present invention is prepared from by each component of following weight fraction:
25 parts of molybdenum trioxides;
10 parts of tungstic acids;
55 parts of titanium dioxide
2 parts of vanadic anhydrides;
6 parts, lime stone;
2.5 parts of stearic acid;
2.5 parts, glass dust;
3.5 parts of inorganic silica gels;
2.5 parts of polyethylene;
0.5 part, paraffin.
Adopt routine techniques in industry to prepare finished product above-mentioned raw materials.
Embodiment 2
The present invention is prepared from by each component of following weight fraction:
30 parts of molybdenum trioxides;
13 parts of tungstic acids;
65 parts of titanium dioxide
2 parts of vanadic anhydrides;
13 parts, lime stone;
3 parts of stearic acid;
2.5 parts, glass dust;
3.5 parts of inorganic silica gels;
2.5 parts of polyethylene;
0.5 part, paraffin.
Adopt routine techniques in industry to prepare finished product above-mentioned raw materials.
Embodiment 3
The present invention is prepared from by each component of following weight fraction:
30 parts of molybdenum trioxides;
15 parts of tungstic acids;
70 parts of titanium dioxide
5 parts of vanadic anhydrides;
15 parts, lime stone;
4 parts of stearic acid;
3 parts, glass dust;
5 parts of inorganic silica gels;
3.5 parts of polyethylene;
1.5 parts, paraffin.
Adopt routine techniques in industry to prepare finished product above-mentioned raw materials.
Embodiment 4
The present invention is prepared from by each component of following weight fraction:
35 parts of molybdenum trioxides;
18 parts of tungstic acids;
80 parts of titanium dioxide
5 parts of vanadic anhydrides;
17 parts, lime stone;
6 parts of stearic acid;
3 parts, glass dust;
5 parts of inorganic silica gels;
3.5 parts of polyethylene;
1.5 parts, paraffin.
Adopt routine techniques in industry to prepare finished product above-mentioned raw materials.
By the catalyst sample of above-mentioned preparation, carry out Performance Detection: result shows, denitrating catalyst compressive resistance of the present invention is high, thereby catalyst is difficult for the service life that efflorescence has extended catalyst, the porosity of denitrating catalyst increases, thereby has improved catalytic efficiency, has reduced catalyst amount.
Claims (4)
1. a denitrating catalyst, is characterized in that: described catalyst is prepared from by each component of following weight fraction:
Molybdenum trioxide 25-35 part;
Tungstic acid 10-18 part;
Titanium dioxide 55-80 part
Vanadic anhydride 2-5 part;
Lime stone 6-17 part;
Stearic acid 2.5-6 part;
Glass dust 2.5-3 part;
Inorganic silica gel 3.5-5 part;
Polyethylene 2.5-3.5 part;
Paraffin 0.5-1.5 part.
2. a kind of catalyst according to claim 1, is characterized in that: described molybdenum trioxide is 30-35 part.
3. a kind of catalyst according to claim 1, is characterized in that: described lime stone is 13-15 part.
4. a kind of catalyst according to claim 1, is characterized in that: described stearic acid is 3-4 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588022.XA CN103638980A (en) | 2013-11-21 | 2013-11-21 | Denitrification catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310588022.XA CN103638980A (en) | 2013-11-21 | 2013-11-21 | Denitrification catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103638980A true CN103638980A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310588022.XA Pending CN103638980A (en) | 2013-11-21 | 2013-11-21 | Denitrification catalyst |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106902891A (en) * | 2017-03-31 | 2017-06-30 | 安徽中煦环保新材料科技有限公司 | A kind of high-efficiency denitration catalyst |
| CN106964408A (en) * | 2017-03-31 | 2017-07-21 | 安徽中煦环保新材料科技有限公司 | A kind of denitrating catalyst being not pulverized easily |
| CN112473654A (en) * | 2020-11-17 | 2021-03-12 | 天津浩创节能环保设备有限公司 | Flue gas denitration catalyst |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040074811A1 (en) * | 2002-10-21 | 2004-04-22 | George Yaluris | NOx reduction compositions for use in FCC processes |
| CN102114423A (en) * | 2011-01-12 | 2011-07-06 | 江苏峰业电力环保集团有限公司 | Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method |
-
2013
- 2013-11-21 CN CN201310588022.XA patent/CN103638980A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040074811A1 (en) * | 2002-10-21 | 2004-04-22 | George Yaluris | NOx reduction compositions for use in FCC processes |
| CN102114423A (en) * | 2011-01-12 | 2011-07-06 | 江苏峰业电力环保集团有限公司 | Denitrifying catalyst and preparation method thereof as well as flue gas denitrifying method |
Non-Patent Citations (2)
| Title |
|---|
| 吴杰: ""V2O5-WO3-MoO3/TiO2催化剂脱硝性能的试验研究"", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技I辑》 * |
| 张鹏: ""飞灰基SCR催化剂脱硝活性测试与表征"", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106902891A (en) * | 2017-03-31 | 2017-06-30 | 安徽中煦环保新材料科技有限公司 | A kind of high-efficiency denitration catalyst |
| CN106964408A (en) * | 2017-03-31 | 2017-07-21 | 安徽中煦环保新材料科技有限公司 | A kind of denitrating catalyst being not pulverized easily |
| CN112473654A (en) * | 2020-11-17 | 2021-03-12 | 天津浩创节能环保设备有限公司 | Flue gas denitration catalyst |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20140319 |