CN104984767A - Dipping solution and method for improving edge strength of corrugated plate type denitration catalyst - Google Patents
Dipping solution and method for improving edge strength of corrugated plate type denitration catalyst Download PDFInfo
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- CN104984767A CN104984767A CN201510435934.2A CN201510435934A CN104984767A CN 104984767 A CN104984767 A CN 104984767A CN 201510435934 A CN201510435934 A CN 201510435934A CN 104984767 A CN104984767 A CN 104984767A
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- catalyst
- corrugated plate
- maceration extract
- edge strength
- dipping
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Abstract
The invention discloses a dipping solution and method for improving the edge strength of a corrugated plate type denitration catalyst. The method comprises the steps: (1) preparing the dipping solution: weighing and proportioning JDS30+JDC013+JDM201+methanol, catalyst powder and JDG10, so as to prepare the dipping solution; (2) cleaning a catalyst unit; (3) dipping the catalyst unit in the dipping solution; and (4) after dipping is completed, taking out the catalyst unit, cleaning the dipping solution outside a shell of the catalyst unit, and standing to dry the catalyst unit, so as to complete a corrugated plate type denitration catalyst edge strengthening process. By adopting denitration catalyst edge strengthening treatment, the mechanical strength of the catalyst is improved, so that the service life of the catalyst is greatly prolonged. After firing for catalyst production is completed, the cooled catalyst is subjected to edge strengthening solution dipping and is dried so as to complete edge strengthening, and thus the mechanical strength of the catalyst is greatly improved.
Description
[technical field]
The present invention relates to corrugated plate dst catalyst technical field, particularly a kind of maceration extract and method improving corrugated plate dst denitrating catalyst edge strength.
[background technology]
Nitrogen oxide (NOx) is one of main component of atmosphere pollution, SO
2and flue dust removing sulfuldioxide is comparatively ripe.At the discharged nitrous oxides of China 70% all from coal burning, in improvement NOx technical field, Selective catalytic reduction method is widely applied with its high reliability.The denitrating catalyst of current domestic power plant denitration project application is mainly divided into three types: corrugated plate dst, board-like and honeycomb fashion.Wherein corrugated plate dst denitrating catalyst adopts glass fibre to do base material, lightweight, resistance to wear, the anti-aspect such as poisoning has great advantage, in the certain share of coal-fired denitration market share.
In prior art, power plant's air flue emission flue gas forms high velocity air, and add the height ash in flue gas, the collision of bulky grain thing, denitrating catalyst wear extent is large, has a strong impact on mechanical performance and the service life of catalyst.
[summary of the invention]
For solving problems of the prior art, the present invention proposes a kind of maceration extract and the method that improve corrugated plate dst denitrating catalyst edge strength, use denitrating catalyst edge strengthening method provided by the invention, greatly improve catalyst edge intensity, the service life of extending catalyst.
For achieving the above object, the present invention adopts following technological means:
Improve a maceration extract for corrugated plate dst denitrating catalyst edge strength, be prepared from by following raw material according to mass fraction meter:
(60-90) % (liquid Si O
2solution+dispersant+organic solvent+methyl alcohol), (8-30) % catalyst, the solid-state SiO of (2-10) %
2; Wherein, according to mass ratio meter, liquid Si O
2solution: dispersant: organic solvent: methyl alcohol=100:11.3:90:30; Described liquid Si O
2solution is silica gel solution; Described dispersant is the mixture of MTMS, silica and dimethyldimethoxysil,ne; Described organic solvent MTMS and the mixture of dimethyldimethoxysil,ne; Described solid-state SiO
2for SiO
2, Al
2o
3with the mixture of CaO.
As a further improvement on the present invention, described liquid Si O
2solution is the JDS30 that Jinhua Daiei coating Co., Ltd produces; Described dispersant is the JDC013 that Jinhua Daiei coating Co., Ltd produces: described organic solvent is the JDM201 that Jinhua Daiei coating Co., Ltd produces; Described solid-state SiO
2for the JDG10 that Jinhua Daiei coating Co., Ltd produces.
As a further improvement on the present invention, described catalyst is the mixture of Detitanium-ore-type titanium dioxide, tungstic acid and vanadic anhydride.
As a further improvement on the present invention, in described catalyst, Detitanium-ore-type titanium dioxide, tungstic acid, vanadic anhydride account for 93%, 5%, 2% by mass percentage respectively.
Improve corrugated plate dst denitrating catalyst edge strength a method, comprise the following steps:
1) take raw material, configure above-mentioned maceration extract, for subsequent use;
2) clean catalysis agent unit;
3) under room temperature, catalyst elements 1 is placed in maceration extract and floods about 30s,
4) after completing after dipping, take out catalyst elements, and clear up the unnecessary maceration extract outside catalyst elements shell, after placing natural drying, complete corrugated plate dst denitrating catalyst edge strengthening process.
The concrete grammar that step 2 cleans cleans catalyst elements for adopting hand-held soot blower, removes the foreign material in ripple hole.
The concrete grammar of step 3 floods for respectively catalyst elements windward side and leeward end being put into maceration extract, and wherein, the dipping height of windward side is 50-70mm, and the dipping height of leeward end is 10-15mm.
Described maceration extract is poured in dip pan and carries out catalyst elements dipping process, and dip pan is provided with liquid level scale.
Relatively and prior art, the present invention has the following advantages:
The maceration extract of raising corrugated plate dst denitrating catalyst edge strength of the present invention, binding agent is in the effect at border sclerosis place: by three kinds of raw material (liquid Si O
2solution+dispersant+organic solvent) binding agent that mixes and active catalyst powder, solid-state SiO
2additive is mixed into border sclerosis maceration extract and carries out border sclerosis process, is active catalyst powder is sticked to finished catalyst fiberglass surfacing, enhances the wear resistance of catalyst while ensureing catalyst activity greatly.This formula is simple, and preparation method is simple and easy, and stirred at ambient temperature mixes and just can configure, and the maceration extract of configuration improves catalyst scuff resistance, and catalyst is improved service life greatly.
The present invention is directed to low, the easy to wear defect of existing corrugated plate dst denitrating catalyst unit intensity, adopt the process of denitrating catalyst edge strengthening, improve catalyst scuff resistance, catalyst is improved service life greatly.After Catalyst Production completes and burns till, the catalyst of having lowered the temperature is carried out edge strengthening immersion stain, completes edge strengthening after drying, catalyst edge scuff resistance improves greatly.For in the denitration application of present power plant, denitrating catalyst problem easy to wear, the catalyst scuff resistance through edge strengthening strengthens, and service life improves greatly, through the wear-resisting Experimental comparison of catalyst, the catalyst anti-wear performance after edge strengthening can improve about 80% than before strengthening.
Further, in order to ensure the performance of catalyst elements entirety, needing that catalyst elements windward side and leeward end are put into maceration extract and flooding, and flooding different height according to requirement of strength.
[accompanying drawing explanation]
Fig. 1 is catalyst elements schematic diagram;
Fig. 2 is catalyst elements edge strengthening schematic diagram;
Fig. 3 is the corrugated plating schematic diagram of catalyst forced fluid attachment;
Fig. 4 be improve corrugated plate dst denitrating catalyst edge strength technological process.
Wherein, 1, catalyst elements, 2, windward side, 3, dip pan, 4, maceration extract, 5, leeward end, 6, catalyst corrugated plating.
[detailed description of the invention]
Below in conjunction with the drawings and specific embodiments, the present invention will be further described, the invention is not restricted to following examples.
The present invention is a kind of improve corrugated plate dst denitrating catalyst edge strength method, comprise the following steps:
Step one, by mass fraction, (JDS30+JDC013+JDM201+ methyl alcohol) (60-90) %, catalyst fines (8-30) %, JDG10 (2-10) % proportional arrangement edge strengthening maceration extract 4, stir with hand mixer, add in dip pan 3, dip pan 3 is provided with liquid level scale, ensures the uniformity of liquid level and maceration extract.
Wherein, in 80%JDS30+JDC013+JDM201+ methyl alcohol, JDS30:JDC013:JDM201: methyl alcohol=100:11.3:90:30.JDS30, JDC013, JDM201 and JDG10 are the production of Jinhua Daiei coating Co., Ltd; The main component of JDS30 is: the silica gel (xSiO of 30%
2yH
2o); The main component of JDC013: 60% MTMS (CH
3si (CH
3o)
3)+30% silica (SiO
2)+7% dimethyldimethoxysil,ne ((CH
3)
2si (CH
3o)
2); The main component of JDM201 is: 85% MTMS (CH
3si (CH
3o)
3)+15% dimethyldimethoxysil,ne ((CH
3)
2si (CH
3o)
2); The main component of JDG10: 60%SiO
2+ 15%Al
2o
3+ 25%CaO.Catalyst fines: Detitanium-ore-type titanium dioxide TiO
2: tungstic acid WO
3: vanadic anhydride V
2o
5=93:5:2.
Step 2, the catalyst elements 1 utilizing hand-held soot blower to blow off to burn till, guarantee no-sundries, blocking in ripple hole.
Step 3, as Fig. 2 by purge after catalyst elements windward side 2 and leeward end 5 put into dip pan 3 successively, flood.
Maceration extract after step 4, dipping outside cleaning catalyst elements 1 shell, completes corrugated plate dst denitrating catalyst edge strengthening process after placing drying.
Each material Main Function in catalyst impregnating solution:
1, JDS30, JDG10: respectively containing liquid Si O
2solution and solid-state SiO
2powder, is used for increasing catalyst wear resistance.
2, JDC013: play dispersant effect, is used for the materials such as dispersed catalyst powder and JDG10, makes the materials such as catalyst fines better more uniformly be coated on catalyst fiberglass surfacing.
3, JDM201: the effect playing organic solvent, is used for catalyst-solvent powder and SiO
2the materials such as powder.
4, methyl alcohol: binding agent solvent, is used for adjustment three kinds of mixed viscosity of binding agent raw material.
5, catalyst fines: the activity guaranteeing border sclerosis rear catalyst finished product.
6, JDG10: the solid-state SiO of principal component
2, be used for increasing catalyst wear resistance.
Embodiment 1
Improve corrugated plate dst denitrating catalyst edge strength a method, comprise the following steps:
1. take raw material, configure above-mentioned maceration extract, for subsequent use;
Wherein the concrete formula of maceration extract is:
First 80kg binding agent (JDS30 (34.6kg) JDC 013 (3.9kg) JDM 201 (31.1kg) methyl alcohol (10.4kg)) is added, then be uniformly mixed after adding 15kg catalyst fines and 5kgJDG10, namely form border sclerosis maceration extract.Above 100kg maceration extract can border sclerosis catalyst elements about 22.
2. the catalyst elements 1 utilizing hand-held soot blower to blow off to burn till, guarantees no-sundries, blocking in ripple hole.；
3. under room temperature, the catalyst elements windward side 2 after purging and leeward end 5 are put into dip pan 3 successively, in maceration extract, flood about 30s,
4. after completing after dipping, take out catalyst elements 1, and clear up the unnecessary maceration extract outside catalyst elements 1 shell, after placing natural drying, complete corrugated plate dst denitrating catalyst edge strengthening process.
Embodiment 2
Improve corrugated plate dst denitrating catalyst edge strength a method, comprise the following steps:
1. take raw material, configure above-mentioned maceration extract, for subsequent use;
Wherein the concrete formula of maceration extract is:
First 60kg binding agent (JDS30 (25.9kg) JDC 013 (2.93kg) JDM 201 (23.35kg) methyl alcohol (7.78kg)) is added, then be uniformly mixed after adding 30kg catalyst fines and 10kgJDG10, namely form border sclerosis maceration extract.Above 100kg maceration extract can border sclerosis catalyst elements about 22.
2. the catalyst elements 1 utilizing hand-held soot blower to blow off to burn till, guarantees no-sundries, blocking in ripple hole.；
3. under room temperature, the catalyst elements windward side 2 after purging and leeward end 5 are put into dip pan 3 successively, in maceration extract, flood about 30s,
4. after completing after dipping, take out catalyst elements 1, and clear up the unnecessary maceration extract outside catalyst elements 1 shell, after placing natural drying, complete corrugated plate dst denitrating catalyst edge strengthening process.
Embodiment 3
Improve corrugated plate dst denitrating catalyst edge strength a method, comprise the following steps:
1. take raw material, configure above-mentioned maceration extract, for subsequent use;
Wherein the concrete formula of maceration extract is:
First 90kg binding agent (JDS30 (38.9kg) JDC 013 (4.4kg) JDM 201 (35.01kg) methyl alcohol (11.67kg)) is added, then be uniformly mixed after adding 8kg catalyst fines and 2kgJDG10, namely form border sclerosis maceration extract.Above 100kg maceration extract can border sclerosis catalyst elements about 22.
2. the catalyst elements 1 utilizing hand-held soot blower to blow off to burn till, guarantees no-sundries, blocking in ripple hole.；
3. under room temperature, the catalyst elements windward side 2 after purging and leeward end 5 are put into dip pan 3 successively, in maceration extract, flood about 30s,
4. after completing after dipping, take out catalyst elements 1, and clear up the unnecessary maceration extract outside catalyst elements 1 shell, after placing natural drying, complete corrugated plate dst denitrating catalyst edge strengthening process.
The height of impregnating depth and edge treated, sees the following form 1.
Table 1
| Windward side | Leeward end | ||
| Sclerosis size mm | 50-70 | 10-15 | Be only glass fibre size |
As corrugated plating 6 thickness after the attachment of Fig. 3 edge strengthening liquid increases, improve the scuff resistance of catalyst.
Catalyst elements after embodiment 1 dipping, Experimental comparison's data see the following form 2.
Table 2
As can be seen from the above table, the catalyst elements after border sclerosis, crocking resistance is improved, and improves about 80%.Solve the problem of low, the easy to wear defect of corrugated plate dst denitrating catalyst unit intensity.
Claims (8)
1. improve a maceration extract for corrugated plate dst denitrating catalyst edge strength, it is characterized in that, be prepared from by following raw material according to mass fraction meter:
(60-90) % (liquid Si O
2solution+dispersant+organic solvent+methyl alcohol), (8-30) % catalyst and the solid-state SiO of (2-10) %
2; Wherein, according to mass ratio meter, liquid Si O
2solution: dispersant: organic solvent: methyl alcohol=100:11.3:90:30; Described liquid Si O
2solution is silica gel solution; Described dispersant is the mixture of MTMS, silica and dimethyldimethoxysil,ne; Described organic solvent MTMS and the mixture of dimethyldimethoxysil,ne; Described solid-state SiO
2for SiO
2, Al2O3 and CaO mixture.
2. a kind of maceration extract improving corrugated plate dst denitrating catalyst edge strength according to claim 1, is characterized in that, described liquid Si O
2solution is the JDS30 that Jinhua Daiei coating Co., Ltd produces; Described dispersant is the JDC013 that Jinhua Daiei coating Co., Ltd produces: described organic solvent is the JDM201 that Jinhua Daiei coating Co., Ltd produces; Described solid-state SiO
2for the JDG10 that Jinhua Daiei coating Co., Ltd produces.
3. a kind of maceration extract improving corrugated plate dst denitrating catalyst edge strength according to claim 1, is characterized in that, described catalyst is the mixture of Detitanium-ore-type titanium dioxide, tungstic acid and vanadic anhydride.
4. a kind of maceration extract improving corrugated plate dst denitrating catalyst edge strength according to claim 3, it is characterized in that, in described catalyst, Detitanium-ore-type titanium dioxide, tungstic acid, vanadic anhydride account for 93%, 5%, 2% by mass percentage respectively.
5. improve a method for corrugated plate dst denitrating catalyst edge strength, it is characterized in that, comprise the following steps:
1) raw material is taken, the maceration extract described in configuration Claims 1-4 any one, for subsequent use;
2) clean catalysis agent unit (1);
3) under room temperature, catalyst elements (1) is placed in maceration extract and floods about 30s,
4) after completing after dipping, take out catalyst elements (1), and clear up the unnecessary maceration extract outside catalyst elements (1) shell, after placing natural drying, complete corrugated plate dst denitrating catalyst edge strengthening process.
6. the method for raising corrugated plate dst denitrating catalyst edge strength according to claim 5, it is characterized in that, step 2) clean concrete grammar cleans catalyst elements (1) for adopting hand-held soot blower, removes the foreign material in ripple hole.
7. the method for raising corrugated plate dst denitrating catalyst edge strength according to claim 5, it is characterized in that, step 3) concrete grammar flood for respectively catalyst elements windward side (2) and leeward end (5) being put into maceration extract, wherein, the dipping height of windward side (2) is 50-70mm, and the dipping height of leeward end (5) is 10-15mm.
8. the method for raising corrugated plate dst denitrating catalyst edge strength according to claim 5, it is characterized in that, described maceration extract is poured in dip pan (3) and carries out catalyst elements dipping process, and dip pan (3) is provided with liquid level scale.
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| CN201510435934.2A CN104984767B (en) | 2015-07-22 | 2015-07-22 | A kind of maceration extract and method for improving corrugated plate dst denitrating catalyst edge strength |
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| CN201510435934.2A CN104984767B (en) | 2015-07-22 | 2015-07-22 | A kind of maceration extract and method for improving corrugated plate dst denitrating catalyst edge strength |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479794A (en) * | 2017-12-17 | 2018-09-04 | 启源（西安）大荣环保科技有限公司 | A kind of corrugated denitrating catalyst and preparation method thereof suitable for low-temperature flue gas |
| CN108619902A (en) * | 2018-05-09 | 2018-10-09 | 启源（西安）大荣环保科技有限公司 | A kind of Gas Generator Set corrugated SCR denitration and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56136858A (en) * | 1980-03-29 | 1981-10-26 | Mitsubishi Heavy Ind Ltd | Anticorrosive paint for prevention of interlaminar separation |
| CN1916087A (en) * | 2005-08-15 | 2007-02-21 | 仁宝电脑工业股份有限公司 | Composition of dope hardened by ultraviolet radiation |
| CN103013193A (en) * | 2012-12-13 | 2013-04-03 | 慧智科技（中国）有限公司 | Titanium-containing ceramic paint and protective coating |
| CN103316718A (en) * | 2013-06-18 | 2013-09-25 | 浙江德创环保科技股份有限公司 | Process for hardening honeycomb type SCR (Selective Catalytic Reduction) denitration catalyst module |
-
2015
- 2015-07-22 CN CN201510435934.2A patent/CN104984767B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56136858A (en) * | 1980-03-29 | 1981-10-26 | Mitsubishi Heavy Ind Ltd | Anticorrosive paint for prevention of interlaminar separation |
| CN1916087A (en) * | 2005-08-15 | 2007-02-21 | 仁宝电脑工业股份有限公司 | Composition of dope hardened by ultraviolet radiation |
| CN103013193A (en) * | 2012-12-13 | 2013-04-03 | 慧智科技（中国）有限公司 | Titanium-containing ceramic paint and protective coating |
| CN103316718A (en) * | 2013-06-18 | 2013-09-25 | 浙江德创环保科技股份有限公司 | Process for hardening honeycomb type SCR (Selective Catalytic Reduction) denitration catalyst module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479794A (en) * | 2017-12-17 | 2018-09-04 | 启源（西安）大荣环保科技有限公司 | A kind of corrugated denitrating catalyst and preparation method thereof suitable for low-temperature flue gas |
| CN108619902A (en) * | 2018-05-09 | 2018-10-09 | 启源（西安）大荣环保科技有限公司 | A kind of Gas Generator Set corrugated SCR denitration and preparation method thereof |
| CN108619902B (en) * | 2018-05-09 | 2021-08-03 | 启源（西安）大荣环保科技有限公司 | Corrugated SCR denitration catalyst for gas unit and preparation method thereof |
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