CN108855053A - A kind of preparation method and applications of rich oxygen type Mn based low-temperature denitration catalyst - Google Patents
A kind of preparation method and applications of rich oxygen type Mn based low-temperature denitration catalyst Download PDFInfo
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- CN108855053A CN108855053A CN201810736264.1A CN201810736264A CN108855053A CN 108855053 A CN108855053 A CN 108855053A CN 201810736264 A CN201810736264 A CN 201810736264A CN 108855053 A CN108855053 A CN 108855053A
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- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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Abstract
The invention discloses a kind of preparation method and applications of rich oxygen type Mn based low-temperature denitration catalyst, are made up of coprecipitation, heat reflow method or carrier impregnation method, and raw material includes the oxide or precursor salt of modifying agent and Mn and optional element.The present invention effectively enhances the metal cation of catalyst and the activation of active oxygen by the addition of modifying agent, to solve the problems, such as that activity is not high under denitrating catalyst low temperature generally existing in the prior art and stability is poor.The present invention has catalyst low-temperature stabilization, efficient, the beneficial effects such as easy to operate.
Description
Technical field
The invention belongs to catalyst for denitrating flue gas technical fields, and in particular to a kind of rich oxygen type Mn based low-temperature denitration catalyst
Preparation method and applications.
Background technique
Currently, global energy structure is still based on combustion of fossil fuel, as NOxThe thermal power plant in primary discharge source
With the non-electrical industry such as steel, even more due to NOxProduction quantity is huge and is included in the object of emphasis energy-saving and emission-reduction by China.And it is public
In the flue gas NOx discharge-reducing method recognized, selective non-catalytic reduction (Selective Non-Catalytic Reduction,
SNCR) and selective catalytic reduction (Selective Catalytic Reduction, SCR) is to be applied most technologies.So
And it is directed to current power industry NOx< 50mg/m3Minimum discharge limit value and some non-electrical industries (such as coking, steel burn
Knot etc.) it is not suitable for that smoke temperature window installs conventional V additional2O5-WO3/TiO2The status of catalyst SCR device, above-mentioned technology are not possible to
Meet industry standard limit of smog release.
For dust concentration≤10g/m of power industry and some non-electrical industries (such as coking, steel sintering)3And temperature
In 40-220 DEG C of flue gas operating condition, how to design a kind of SCR catalyst with efficient cryogenic catalytic performance is its key point.?
Mn base oxide catalyst is studied most among this, and is recognized the most catalysis of SCR catalytic activity at low temperature
One of agent.However, either single MnO2Or using the modified Mn base oxide catalyst of metal cation
(CN201510056662.5, CN201610844375.5) there are still activity is not high, stability is poor asks under catalyst low temperature
Topic.Therefore, a kind of low-temperature stabilization high-efficiency denitration catalyst for adapting to 40-220 DEG C of smoke temperature window is developed, realizes low-temperature SCR technology,
It will be to the NO of power industry and some non-electrical industries (such as coking, steel sintering)xEmission reduction has important innovative practice meaning
Justice.
Summary of the invention
It is an object of the invention to overcome prior art defect, a kind of rich oxygen type Mn based low-temperature denitration catalyst is provided.
Another object of the present invention is to provide the preparation methods of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst.
A further object of the present invention is to provide the application methods of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst.
Technical scheme is as follows：
A kind of rich oxygen type Mn based low-temperature denitration catalyst is made up of coprecipitation, heat reflow method or carrier impregnation method,
Raw material includes the oxide or precursor salt of modifying agent and Mn and optional element, wherein
Modifying agent includes KMnO4、H2O2And NaClO2At least one of；
Optional element includes at least one of Ce, Al, Zn, Ca, Mg, Fe, V and Ti；
Precursor salt is nitrate, acetate, halide salt or sulfate.
In a preferred embodiment of the invention, carrier used in the carrier impregnation method include titanium dioxide,
Aluminium oxide and silica.
One of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst is included the following steps using coprecipitation：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) it is carried out with the alkali that concentration is 0.5~3.0mol/L with step (2) resulting material at 40~80 DEG C coprecipitated
It forms sediment, is sufficiently stirred in coprecipitation process, while keeping pH is 7~11, and it is old to continue stirring after the completion of co-precipitation at 40~80 DEG C
Change 2~12h；
(4) step (3) resulting material is separated by solid-liquid separation, obtained solid is sufficiently washed with deionized water, then in
80~120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
In a preferred embodiment of the invention, the alkali is NaOH, KOH, urea or NH3·H2O。
The two of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, using heat reflow method, include the following steps：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) acid is added into step (2) resulting material, is sufficiently stirred, and keeping pH is 1~5；
(4) natural after reaction by step (3) resulting material 4~48h of heating reflux reaction at 99~102 DEG C
Be cooled to room temperature, then obtain solid through filtering, in 80~120 DEG C it is dry to get.
In a preferred embodiment of the invention, the acid is H2SO4、HNO3、HCl、CH3COOH or HOOCCOOH.
The three of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, are walked using carrier impregnation method, including as follows
Suddenly：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) by the carrier impregnation in above-mentioned mixed solution, the modifying agent is added, then at 0~40 DEG C sufficiently
2~12h is stirred, impregnated carrier is obtained；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) by above-mentioned impregnated carrier in 80~120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
The application method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, including：In 0~10g/m3Dust concentration and
5000~120000h-1Space velocities under, with NH3For reducing agent, gone back with rich oxygen type Mn based low-temperature denitration catalyst catalysis
NOx in former flue gas, the NOx concentration in flue gas are 50~2200ppm, SO2Concentration be 0~3000ppm, temperature be 40~
220 DEG C, O2Volumetric concentration is 2.0~18.0%.
The beneficial effects of the invention are as follows：The present invention by the addition of modifying agent, effectively enhance the metal sun of catalyst from
The activation of son and active oxygen, so that it is not high and steady to solve activity under denitrating catalyst low temperature generally existing in the prior art
Qualitative poor problem.The present invention has catalyst low-temperature stabilization, efficient, the beneficial effects such as easy to operate.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment.
Embodiment 1：The preparation and performance test of rich oxygen type manganese cerium catalyst
The manganese cerium catalyst prepared using coprecipitation：Prepare 40mol%Mn (NO3)2·4H2O and
40mo1% (NH4)2Ce(NO3)6Mixed aqueous solution, then add 10mol%KMnO4And 10mol%H2O2Solution,
Form the Mn (NO that molar ratio is 4: 1: 1: 43)2·4H2O, KMnO4, H2O2, (NH4)2Ce(NO3)6Solution, and the magnetic at 50 DEG C
Power is stirred.Under agitation, the KOH solution of 4mol/L is slowly added dropwise into mixed liquor, until pH of mixed reaches
10.5.Sediment aging 4h in mother liquor is filtered and is rinsed with deionized water, then in 110 DEG C of dry 12h, finally in air gas
400 in atmosphere℃Lower calcining 6h obtains rich oxygen type manganese cerium catalyst and (is named as：Orich-MnOx-CeO2)。
Catalyst performance test：By above-mentioned catalyst tabletting, sieving is broken into pieces, choose the particle test of 40-60 mesh.React item
Part：NO=300ppm, NH3=300ppm, SO2=0ppm, O2=6%, N2For Balance Air, GHSV=60000h-1, catalyst
Loading amount 0.2g, reaction pressure are normal pressure, specific performance test result is as follows table 1：
The performance test of 1 rich oxygen type manganese cerium catalyst low temperature NO conversion of table
Embodiment 2：The preparation and performance test of rich oxygen type zinc-manganese cerium catalyst
The zinc-manganese cerium catalyst prepared using heat reflow method prepares 7mol%Zn (NO3)2·6H2O, 30mol%Mn
(SO4)2·1H2O and 40mol% (NH4)2Ce(NO3)6Mixed aqueous solution, then add 23mol%KMnO4Solution, formation mole
Than the Zn (NO for 0.7: 3: 2.3: 43)2·6H2O, Mn (SO4)2·1H2O, KMnO4, (NH4)2Ce(NO3)6Solution.Again to this
Suitable HNO is added in mixed aqueous solution3To pH value of solution=1.Above-mentioned mixed liquor is heated to reflux for 24 hours at 100 DEG C.Reaction terminates
Afterwards, cooled to room temperature, resulting materials are dry at 110 DEG C after filtering at room temperature.
Catalyst performance test：By above-mentioned catalyst tabletting, sieving is broken into pieces, choose the particle test of 40~60 mesh.Reaction
Condition：NO=1000ppm, NH3=1000ppm, SO2=300ppm, O2=10%, N2 are Balance Air, GHSV=24000h-1, urge
The loading amount 0.2g of agent, reaction pressure are normal pressure, specific performance test result is as follows table 2：
The performance test of 2 rich oxygen type manganese cerium catalyst low temperature NO conversion of table
Embodiment 3：The preparation and performance test of rich oxygen type manganese ferrotitanium catalyst
Manganese ferrotitanium catalyst is prepared using infusion process, prepares 55mol%Mn (NO3)2·4H2O and 25mol%Fe (NO3)3·
9H2The mixed aqueous solution of O, then the mixed aqueous solution is impregnated on titania support, then 20mol%NaClO is added dropwise2Solution,
Form the Mn (NO that molar ratio is 5.5: 2.5: 23)2·4H2O, Fe (NO3)3.9H2O, KMnO4Solution.It sufficiently stirs at room temperature
8h is mixed, products obtained therefrom is dry at 120 DEG C, roasts 6h at 500 DEG C.
Catalyst performance test：By above-mentioned catalyst tabletting, sieving is broken into pieces, choose the particle test of 40-60 mesh.React item
Part：NO=600ppm, NH3=600ppm, SO2=1000ppm, O2=15%, N2For Balance Air, GHSV=5000h-1, catalyst
Loading amount 0.2g, reaction pressure is normal pressure, specific performance test result is as follows table 3：
The performance test of 3 rich oxygen type manganese cerium catalyst low temperature NO conversion of table
The characteristics of this catalyst and advance mainly have following items：
This catalyst passes through KMnO4、H2O2And NaClO2Deng the addition of one or more of modifying agent, catalysis is effectively enhanced
The metal cation of agent and the activation of active oxygen improve the reactivity of catalysis NO.
This catalyst preparation process reaction condition is mild, and process is simple, easily operated；And performance reproducibility is good, is easy
Realize industry amplification；
This catalyst can play efficient catalytic action at low temperature (220 DEG C or less), reduce energy consumption；
This catalyst is more preferable for the removal effect of NOx, and (≤2200ppm) can preferably be caught under lower NOx concentration
Catch NOxAnd it reacts.
Those of ordinary skill in the art still are able to it is found that when technical solution of the present invention changes in following ranges
To same as the previously described embodiments or similar technical effect, protection scope of the present invention is still fallen within：
A kind of rich oxygen type Mn based low-temperature denitration catalyst is made up of coprecipitation, heat reflow method or carrier impregnation method,
Raw material includes the oxide or precursor salt of modifying agent and Mn and optional element, wherein
Modifying agent includes KMnO4、H2O2And NaClO2At least one of；
Optional element includes at least one of Ce, Al, Zn, Ca, Mg, Fe, V and Ti；
Precursor salt is nitrate, acetate, halide salt or sulfate.
Carrier used in the carrier impregnation method includes titanium dioxide, aluminium oxide and silica.
One of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst is included the following steps using coprecipitation：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) it is carried out with the alkali that concentration is 0.5~3.0mol/L with step (2) resulting material at 40~80 DEG C coprecipitated
It forms sediment, is sufficiently stirred in coprecipitation process, while keeping pH is 7~11, and it is old to continue stirring after the completion of co-precipitation at 40~80 DEG C
Change 2~12h；
(4) step (3) resulting material is separated by solid-liquid separation, obtained solid is sufficiently washed with deionized water, then in
80~120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
The alkali is NaOH, KOH, urea or NH3·H2O。
The two of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, using heat reflow method, include the following steps：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) acid is added into step (2) resulting material, is sufficiently stirred, and keeping pH is 1~5；
(4) natural after reaction by step (3) resulting material 4~48h of heating reflux reaction at 99~102 DEG C
Be cooled to room temperature, then obtain solid through filtering, in 80~120 DEG C it is dry to get.
The acid is H2SO4、HNO3、HCl、CH3COOH or HOOCCOOH.
The three of the preparation method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, are walked using carrier impregnation method, including as follows
Suddenly：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water,
It is configured to mixed solution；
(2) by the carrier impregnation in above-mentioned mixed solution, the modifying agent is added, then at 0~40 DEG C sufficiently
2~12h is stirred, impregnated carrier is obtained；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent
For 0.1~70mol%：0.1~80mol%：0.1~60mol%；
(3) by above-mentioned impregnated carrier in 80~120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
The application method of above-mentioned rich oxygen type Mn based low-temperature denitration catalyst, including：In 0~10g/m3Dust concentration and
5000~120000h-1Space velocities under, with NH3For reducing agent, gone back with rich oxygen type Mn based low-temperature denitration catalyst catalysis
NO in former flue gasx, NO in flue gasxConcentration is 50~2200ppm, SO2Concentration be 0~3000ppm, temperature be 40~
220 DEG C, O2Volumetric concentration is 2.0~18.0%.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (8)
1. a kind of rich oxygen type Mn based low-temperature denitration catalyst, it is characterised in that：Pass through coprecipitation, heat reflow method or carrier impregnation
Method is made, and raw material includes the oxide or precursor salt of modifying agent and Mn and optional element, wherein
Modifying agent includes KMnO4、H2O2And NaClO2At least one of；
Optional element includes at least one of Ce, Al, Zn, Ca, Mg, Fe, V and Ti；
Precursor salt is nitrate, acetate, halide salt or sulfate.
2. rich oxygen type Mn based low-temperature denitration catalyst as described in claim 1, it is characterised in that：Institute in the carrier impregnation method
Carrier includes titanium dioxide, aluminium oxide and silica.
3. the preparation method of rich oxygen type Mn based low-temperature denitration catalyst of any of claims 1 or 2, it is characterised in that：Using altogether
The precipitation method include the following steps：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water, are prepared
At mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent is
0.1~70mol%: 0.1~80mol%: 0.1~60mol%；
(3) it is co-precipitated with the alkali that concentration is 0.5~3.0mol/L with step (2) resulting material at 40~80 DEG C, altogether
Be sufficiently stirred in precipitation process, at the same keep pH be 7~11, continue at 40~80 DEG C after the completion of co-precipitation stir aging 2~
12h；
(4) step (3) resulting material is separated by solid-liquid separation, obtained solid is sufficiently washed with deionized water, then in 80~
120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
4. preparation method as claimed in claim 3, it is characterised in that：The alkali is NaOH, KOH, urea or NH3·H2O。
5. the preparation method of rich oxygen type Mn based low-temperature denitration catalyst of any of claims 1 or 2, it is characterised in that：Using heat
Circumfluence method includes the following steps：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water, are prepared
At mixed solution；
(2) modifying agent is added into above-mentioned mixed solution；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent is
0.1~70mol%: 0.1~80mol%: 0.1~60mol%；
(3) acid is added into step (2) resulting material, is sufficiently stirred, and keeping pH is 1~5；
(4) by step (3) resulting material 4~48h of heating reflux reaction at 99~102 DEG C, natural cooling after reaction
To room temperature, then obtain solid through filtering, in 80~120 DEG C it is dry to get.
6. preparation method as claimed in claim 5, it is characterised in that：The acid is H2SO4、HNO3、HCl、CH3COOH or
HOOCCOOH。
7. the preparation method of rich oxygen type Mn based low-temperature denitration catalyst of any of claims 1 or 2, it is characterised in that：Using load
Body infusion process, includes the following steps：
(1) oxide or precursor salt of the oxide of the Mn or precursor salt and optional element are dissolved in deionized water, are prepared
At mixed solution；
(2) by the carrier impregnation in above-mentioned mixed solution, the modifying agent is added, is then sufficiently stirred 2 at 0~40 DEG C
~12h, obtains impregnated carrier；
The molar concentration percentage of above-mentioned Mn oxide or precursor salt, the oxide of optional element or precursor salt and modifying agent is
0.1~70mol%: 0.1~80mol%: 0.1~60mol%；
(3) by above-mentioned impregnated carrier in 80~120 DEG C of dryings, then in 300~800 DEG C of 2~6h of roasting to get.
8. the application method of rich oxygen type Mn based low-temperature denitration catalyst of any of claims 1 or 2, it is characterised in that：Including：?
0~10g/m3Dust concentration and 5000~120000h-1Space velocities under, with NH3For reducing agent, with the rich oxygen type Mn
NO in based low-temperature denitration catalyst the catalytic reduction of flue gasx, NO in flue gasxConcentration is 50~2200ppm, SO2Concentration is
0~3000ppm, temperature are 40~220 DEG C, O2Volumetric concentration is 2.0~18.0%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112495367A (en) * | 2020-12-18 | 2021-03-16 | 南昌航空大学 | Oxygen-enriched MoTiOxCatalyst, preparation method and application thereof |
| CN117654482A (en) * | 2023-12-05 | 2024-03-08 | 安徽华钛高新材料有限公司 | Double-effect catalyst for removing CO and denitration and preparation device thereof |
| CN117654482B (en) * | 2023-12-05 | 2024-05-17 | 安徽华钛高新材料有限公司 | Double-effect catalyst for removing CO and denitration and preparation device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259438A (en) * | 2008-04-14 | 2008-09-10 | 长春吉大科诺科技有限责任公司 | Glass coating for selective catalytic converter and preparation |
| CN102068994A (en) * | 2010-12-14 | 2011-05-25 | 昆明理工大学 | Catalyst and preparation method thereof |
| CN102114424A (en) * | 2010-12-29 | 2011-07-06 | 国电科学技术研究院 | Low-temperature smoke denitration SCR (silicon controlled rectifier) catalyst and preparation method |
| CN103894185A (en) * | 2014-04-01 | 2014-07-02 | 北京工业大学 | Method for preparing selective catalytic reduction (SCR) denitration catalyst by taking TiO2-ZnO as composite carrier |
-
2018
- 2018-07-06 CN CN201810736264.1A patent/CN108855053B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259438A (en) * | 2008-04-14 | 2008-09-10 | 长春吉大科诺科技有限责任公司 | Glass coating for selective catalytic converter and preparation |
| CN102068994A (en) * | 2010-12-14 | 2011-05-25 | 昆明理工大学 | Catalyst and preparation method thereof |
| CN102114424A (en) * | 2010-12-29 | 2011-07-06 | 国电科学技术研究院 | Low-temperature smoke denitration SCR (silicon controlled rectifier) catalyst and preparation method |
| CN103894185A (en) * | 2014-04-01 | 2014-07-02 | 北京工业大学 | Method for preparing selective catalytic reduction (SCR) denitration catalyst by taking TiO2-ZnO as composite carrier |
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| CN112495367A (en) * | 2020-12-18 | 2021-03-16 | 南昌航空大学 | Oxygen-enriched MoTiOxCatalyst, preparation method and application thereof |
| CN117654482A (en) * | 2023-12-05 | 2024-03-08 | 安徽华钛高新材料有限公司 | Double-effect catalyst for removing CO and denitration and preparation device thereof |
| CN117654482B (en) * | 2023-12-05 | 2024-05-17 | 安徽华钛高新材料有限公司 | Double-effect catalyst for removing CO and denitration and preparation device thereof |
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