CN105498749A - High-strength honeycomb-type thin-wall denitration catalyst and preparation method thereof - Google Patents
High-strength honeycomb-type thin-wall denitration catalyst and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-strength honeycomb-type thin-wall denitration catalyst, and belongs to the technical field of industrial denitration. The high-strength honeycomb-type thin-wall denitration catalyst is prepared by mixing the following components in parts by weight: 80-85 parts of TiO2, 1-2 parts of SiO2, 5-10 parts of Ca(OH)2, 5-10 parts of WO3, 0-2 parts of V2O5 and 1-3 parts of glass fiber. According to the technical scheme, compared with the prior art, through addition of Ca(OH)2, bound water in the catalyst is reduced, and the binding force of particles of the catalyst is improved, so that the strength of the catalyst is improved; through addition of Ca ions, the reactivity of the catalyst can be improved to certain extent, the catalytic efficiency can be improved, and the beneficial technical effects are achieved. The invention further provides a preparation method for the catalyst. Compared with the prior art, the preparation method is easier in catalyst batch extrusion and lower in production cost, and has wide market prospects.
Description
Technical field
The present invention relates to a kind of high strength honeycomb thin-wall denitration catalyst, and the preparation method of this catalyst, belong to industrial denitration technology field.
Background technology
Nitrogen oxide (NO
x) be a kind of atmosphere pollution, it is mainly derived from coal-burning power plant, now the removal of nitrogen oxide method of coal-burning power plant, mainly contains SCR technology, SNCR technology, low-NO_x combustion technology etc., wherein SCR technology is due to its high efficiency and maturity, adopt by most coal-burning power plant.The arrangement of SCR denitration system is generally high dust and arranges, be placed between economizer and air preheater, the flue gas of high dust content is easy to cause wearing and tearing to catalyst, the catalyst of wearing and tearing very easily caves in, catalyst activity is caused to reduce, discharged nitrous oxides exceeds standard, and therefore denitrating catalyst mechanical strength becomes the important indicator weighing its combination property.
In SCR denitration, the amount of glass fibre is larger, and the mechanical strength of catalyst is larger.But for thin-walled catalyst, glass fibre amount is larger, the extrusion molding of catalyst pug is more difficult, so now commercially; the mechanical strength of thin-walled catalyst can only reach 60% of normal value, although therefore thin-walled catalyst cost performance will be far superior to heavy wall catalyst, because it in use very easily weares and teares; its range of application is greatly limited, so the thin-walled catalyst that a kind of high strength is developed in design is of great importance.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of high strength honeycomb thin-wall denitration catalyst, concrete technical scheme is as follows:
A kind of high strength honeycomb thin-wall denitration catalyst, each component of described high strength honeycomb thin-wall denitration catalyst is according to following parts by weight:
TiO
280 parts ~ 85 parts
SiO
21 part ~ 2 parts
Ca(OH)
25 parts ~ 10 parts
WO
35 parts ~ 10 parts
V
2o
50 part ~ 2 parts
1 part ~ 3 parts, glass fibre
Mix.
As the improvement of technique scheme, described TiO
2for particle diameter is 10nm ~ 100nm Detitanium-ore-type TiO
2powder, described Ca(OH)
2for particle diameter is the powder of 10nm ~ 100nm.
Technique scheme compared with prior art, passes through Ca(OH)
2add, reduce the Bound moisture in catalyst, strengthen the adhesion between catalyst granules, its catalyst strength is strengthened; Simultaneously Ca ion add the reactivity that can improve catalyst to a certain extent, improve catalytic efficiency, there is useful technique effect.
Present invention also offers the preparation method of above-mentioned catalyst, comprise the following steps:
Step one, mixing roll is mixing; Step 2, prepared by pug; Step 3, calcines shaping;
In described step one, successively by TiO
2, Ca(OH)
2, SiO
2, WO
3, ammonium metavanadate solution and glass fibre join in mixing roll mixing, stir and obtain homogeneous mixture;
In described step 2, in the mixture that step one obtains, add polyethylene glycol oxide and carboxymethyl cellulose successively, stir and obtain homogeneous pug;
In described step 3, pug calcining step 2 obtained is shaping, obtains high strength honeycomb thin-wall denitration catalyst.
As the improvement of technique scheme, described step one is divided into four steps:
(1) TiO
2dispersion, first by TiO
2add in mixing roll, add ammoniacal liquor successively wherein while stirring and water stirs;
(2) Ca(OH)
2be mixed into, in (1), add Ca(OH)
2, then adding stearic acid and ammoniacal liquor successively, stir;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add SiO
2and WO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds ammonium metavanadate solution and glass fibre, then adds a small amount of ammoniacal liquor, the mixture stirring homogeneous in (3).
As the improvement of technique scheme, described TiO
2, Ca(OH)
2, SiO
2, WO
3, glass fibre weight fraction be followed successively by the TiO of 80 parts ~ 85 parts
2, the Ca(OH of 5 parts ~ 10 parts)
2, the SiO of 1 part ~ 2 parts
2, the WO of 5 parts ~ 10 parts
3, the glass fibre of 1 part ~ 3 parts, described ammonium metavanadate solution is according to the V of 0 part that generates in product ~ 2 parts
2o
5carry out equal proportion interpolation.
As the improvement of technique scheme, in described step 2, when the mixture water content in step one is low to moderate 29%, then add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein, when pug water content is down to 27%, take out pug.
As the improvement of technique scheme, in described step 3, pug is carried out extruding operation, then puts into hothouse, dry 10 days, then pug is calcined shaping.
The preparation method that technique scheme provides has following two effects, and one is relative to existing production technology, and glass fibre addition reduces half relative to normal value, when not compared with gadget intensity, catalyst pug is extruded easier; Two is under the requirement of same efficiency, and the active principle content of thin-walled catalyst is fewer than heavy wall, can reduce cost, has wide market prospects.
Detailed description of the invention
Be described in detail below in conjunction with specific embodiment.
Embodiment one
The preparation of denitrating catalyst is carried out according to the following step,
Step one, mixing roll is mixing:
(1) TiO
2dispersion, first take 20.1g nano-sized anatase type TiO
2powder adds in mixing roll, adds 32ml while stirring wherein successively and enters ammoniacal liquor and 100ml water stirs;
(2) Ca(OH)
2be mixed into, in (1), add 1.3g nanoscale Ca(OH)
2powder, then adding 4.1g stearic acid and 10ml ammoniacal liquor successively, stirs;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add 0.3gSiO
2and 1.3gWO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds 4ml ammonium metavanadate solution and 0.3g glass fibre, then adds 10ml ammoniacal liquor, the mixture stirring homogeneous in (3);
Step 2, prepared by pug: when the mixture water content in step one is low to moderate 29%, then add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein, when pug water content is down to 27%, takes out pug;
Step 3, calcines shaping: carried out extruding operation by pug, then put into hothouse, dry 10 days, then is calcined by pug shaping, obtains high strength honeycomb thin-wall denitration catalyst.
The denitrating catalyst obtained through above-mentioned steps is carried out denitration reaction activity rating in self-control tubular type SCR reactor, and by Ca(OH in component)
2remove, as a comparison case one, wherein simulated flue gas consist of 600ppmNH
3, 600ppmNO and 3%O
2, overall flow rate is 350ml/min, and design reaction temperature interval is 220 DEG C ~ 460 DEG C, and thermograde is 30 DEG C.Reactor tail pipe is imported and exported gas concentration and is carried out on-line checkingi by Testo350-XL flue gas analyzer, and its denitration efficiency is in table 1.
Test the compression strength of catalyst prod according to standard GB/T/T1964-1996 " porous ceramics compressive strength test method ", test result is in table 2 simultaneously.
Embodiment two
The preparation of denitrating catalyst is carried out according to the following step,
Step one, mixing roll is mixing:
(1) TiO
2dispersion, first take 21.3g nano-sized anatase type TiO
2powder adds in mixing roll, adds 40ml while stirring wherein successively and enters ammoniacal liquor and 100ml water stirs, wherein nano level Detitanium-ore-type TiO
2powder can improve the specific area of catalyst, improves the load efficiency of catalyst;
(2) Ca(OH)
2be mixed into, in (1), add 2.5g nanoscale Ca(OH)
2powder, then adding 6.2g stearic acid and 15ml ammoniacal liquor successively, stirs, wherein nano level Ca(OH)
2powder can improve its dispersion effect;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add 0.5gSiO
2and 2.5gWO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds 8ml ammonium metavanadate solution and 0.8g glass fibre, then adds 20ml ammoniacal liquor, the mixture stirring homogeneous in (3);
Step 2, prepared by pug: when the mixture water content in step one is low to moderate 29%, then add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein, when pug water content is down to 27%, takes out pug;
Step 3, calcines shaping: carried out extruding operation by pug, then put into hothouse, dry 10 days, then is calcined by pug shaping, obtains high strength honeycomb thin-wall denitration catalyst.
By the denitrating catalyst obtained through above-mentioned steps with component in remove Ca(OH)
2comparative example two according to the method for testing of embodiment one, carry out denitration reaction activity rating, its denitration efficiency sees the following form 1, and compression strength the results are shown in Table 2.
Embodiment three
The preparation of denitrating catalyst is carried out according to the following step,
Step one, mixing roll is mixing:
(1) TiO
2dispersion, first take 20.8g nano-sized anatase type TiO
2powder adds in mixing roll, adds 36ml while stirring wherein successively and enters ammoniacal liquor and 100ml water stirs;
(2) Ca(OH)
2be mixed into, in (1), add 2.0g nanoscale Ca(OH)
2powder, then adding 4.1g stearic acid and 12ml ammoniacal liquor successively, stirs;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add 0.4gSiO
2and 1.8gWO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds 8ml ammonium metavanadate solution and 0.5g glass fibre, then adds 16ml ammoniacal liquor, the mixture stirring homogeneous in (3);
Step 2, prepared by pug: when the mixture water content in step one is low to moderate 29%, then add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein, when pug water content is down to 27%, takes out pug;
Step 3, calcines shaping: carried out extruding operation by pug, then put into hothouse, dry 10 days, then is calcined by pug shaping, obtains high strength honeycomb thin-wall denitration catalyst.
By the denitrating catalyst obtained through above-mentioned steps with component in remove Ca(OH)
2comparative example two according to the method for testing of embodiment one, carry out denitration reaction activity rating, its denitration efficiency sees the following form 1, and compression strength the results are shown in Table 2.
Embodiment four
The preparation of denitrating catalyst is carried out according to the following step,
Step one, mixing roll is mixing:
(1) TiO
2dispersion, first take 20.2g nano-sized anatase type TiO
2powder adds in mixing roll, adds 32ml while stirring wherein successively and enters ammoniacal liquor and 100ml water stirs;
(2) Ca(OH)
2be mixed into, in (1), add 2.1g nanoscale Ca(OH)
2powder, then adding 6.1g stearic acid and 10ml ammoniacal liquor successively, stirs;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add 0.3gSiO
2and 1.4gWO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds 4ml ammonium metavanadate solution and 0.3g glass fibre, then adds 10ml ammoniacal liquor, the mixture stirring homogeneous in (3);
Step 2, prepared by pug: when the mixture water content in step one is low to moderate 29%, then add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein, when pug water content is down to 27%, takes out pug;
Step 3, calcines shaping: carried out extruding operation by pug, then put into hothouse, dry 10 days, then is calcined by pug shaping, obtains high strength honeycomb thin-wall denitration catalyst.
By the denitrating catalyst obtained through above-mentioned steps with component in remove Ca(OH)
2comparative example two according to the method for testing of embodiment one, carry out denitration reaction activity rating, its denitration efficiency sees the following form 1, and compression strength the results are shown in Table 2.
The denitration rate (%) of catalyst under table 1 different temperatures
After testing, denitrating catalyst of the present invention owing to introducing Ca(OH in manufacturing process)
2, its denitration efficiency does not add Ca(OH)
2comparative example slightly improve.
Table 2 intensity test result (MPa)
Experience side, denitrating catalyst of the present invention owing to introducing Ca(OH in manufacturing process)
2although thus glass fibre addition compared with normal technique reduces to some extent, and in catalyst, intergranular adhesion is due to Ca(OH)
2existence increase, thus the compression strength of product does not add Ca(OH)
2comparative example significantly improve, effectively improve mechanical strength, beneficial effect is remarkable.
Claims (7)
1. a high strength honeycomb thin-wall denitration catalyst, is characterized in that, each component of described high strength honeycomb thin-wall denitration catalyst is according to following parts by weight:
TiO
280 parts ~ 85 parts
SiO
21 part ~ 2 parts
Ca(OH)
25 parts ~ 10 parts
WO
35 parts ~ 10 parts
V
2o
50 part ~ 2 parts
1 part ~ 3 parts, glass fibre
Mix.
2. a kind of high strength honeycomb thin-wall denitration catalyst as claimed in claim 1, is characterized in that, described TiO
2for particle diameter is 10nm ~ 100nm Detitanium-ore-type TiO
2powder, described Ca(OH)
2for particle diameter is the powder of 10nm ~ 100nm.
3. a preparation method for high strength honeycomb thin-wall denitration catalyst according to claim 1, comprise the following steps: step one, mixing roll is mixing; Step 2, prepared by pug; Step 3, calcines shaping; It is characterized in that,
In described step one, successively by TiO
2, Ca(OH)
2, SiO
2, WO
3, ammonium metavanadate solution and glass fibre join in mixing roll mixing, stir and obtain homogeneous mixture;
In described step 2, in the mixture that step one obtains, add polyethylene glycol oxide and carboxymethyl cellulose successively, stir and obtain homogeneous pug;
In described step 3, pug calcining step 2 obtained is shaping, obtains high strength honeycomb thin-wall denitration catalyst.
4. preparation method as claimed in claim 3, it is characterized in that, described step one is divided into four steps:
(1) TiO
2dispersion, first by TiO
2add in mixing roll, add ammoniacal liquor successively wherein while stirring and water stirs;
(2) Ca(OH)
2be mixed into, in (1), add Ca(OH)
2, then adding stearic acid and ammoniacal liquor successively, stir;
(3) WO
3be mixed into, when temperature rises to 60 DEG C, in (2), add SiO
2and WO
3, stir until temperature reaches 95 DEG C, continue to be stirred to water content and be low to moderate 25%;
(4) being mixed into of ammonium metavanadate, adds ammonium metavanadate solution and glass fibre, then adds a small amount of ammoniacal liquor, the mixture stirring homogeneous in (3).
5. preparation method as claimed in claim 4, is characterized in that, described TiO
2, Ca(OH)
2, SiO
2, WO
3, glass fibre weight fraction be followed successively by the TiO of 80 parts ~ 85 parts
2, the Ca(OH of 5 parts ~ 10 parts)
2, the SiO of 1 part ~ 2 parts
2, the WO of 5 parts ~ 10 parts
3, the glass fibre of 1 part ~ 3 parts, described ammonium metavanadate solution is according to the V of 0 part that generates in product ~ 2 parts
2o
5carry out equal proportion interpolation.
6. the preparation method according to any one of claim 3-5, is characterized in that, in described step 2, when the mixture water content in step one is low to moderate 29%, add appropriate polyethylene glycol oxide and carboxymethyl cellulose wherein again, when pug water content is down to 27%, take out pug.
7. preparation method as claimed in claim 6, is characterized in that, in described step 3, carried out extruding operation by pug, then put into hothouse, dry 10 days, then is calcined by pug shaping.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268773A (en) * | 2016-06-29 | 2017-01-04 | 浙江浙能催化剂技术有限公司 | A kind of thin-walled wide active temperature windows denitrating catalyst and preparation method thereof |
| CN106807350A (en) * | 2017-03-29 | 2017-06-09 | 吉占年 | A kind of catalyst for removing nitrogen oxides |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829560A (en) * | 2010-04-19 | 2010-09-15 | 瑞基科技发展有限公司 | Denitration catalyst |
| CN103143396A (en) * | 2013-03-04 | 2013-06-12 | 郑州康宁特环保工程技术有限公司 | Honeycomb flue gas denitrification catalyst and preparation method thereof |
| CN103223337A (en) * | 2013-04-07 | 2013-07-31 | 江苏省威力磷复肥有限公司 | Low-temperature denitration catalyst |
| CN103586016A (en) * | 2013-11-14 | 2014-02-19 | 索平 | Honeycomb type selective catalytic reduction denitration catalyst and preparation method thereof |
| CN103691424A (en) * | 2013-12-01 | 2014-04-02 | 湖北广净环保催化剂有限公司 | Preparation method for high-temperature-resistant abrasion-resistant cellular NOx removal catalyst |
-
2015
- 2015-11-30 CN CN201510873743.4A patent/CN105498749A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829560A (en) * | 2010-04-19 | 2010-09-15 | 瑞基科技发展有限公司 | Denitration catalyst |
| CN103143396A (en) * | 2013-03-04 | 2013-06-12 | 郑州康宁特环保工程技术有限公司 | Honeycomb flue gas denitrification catalyst and preparation method thereof |
| CN103223337A (en) * | 2013-04-07 | 2013-07-31 | 江苏省威力磷复肥有限公司 | Low-temperature denitration catalyst |
| CN103586016A (en) * | 2013-11-14 | 2014-02-19 | 索平 | Honeycomb type selective catalytic reduction denitration catalyst and preparation method thereof |
| CN103691424A (en) * | 2013-12-01 | 2014-04-02 | 湖北广净环保催化剂有限公司 | Preparation method for high-temperature-resistant abrasion-resistant cellular NOx removal catalyst |
Non-Patent Citations (2)
| Title |
|---|
| 钱觉时等: "《建筑材料学》", 31 March 2007, 武汉理工大学出版社 * |
| 顾婷婷等: ""Ca掺杂对MnOx/TiO2催化剂低温SCR脱硝性能影响研究"", 《2013中国环境科学学会学术年会论文集（第五卷）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268773A (en) * | 2016-06-29 | 2017-01-04 | 浙江浙能催化剂技术有限公司 | A kind of thin-walled wide active temperature windows denitrating catalyst and preparation method thereof |
| CN106807350A (en) * | 2017-03-29 | 2017-06-09 | 吉占年 | A kind of catalyst for removing nitrogen oxides |
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