CN113522272A - Denitration catalyst and preparation method thereof - Google Patents
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Abstract
The invention provides a denitration catalyst and a preparation method thereof, wherein the preparation method of the denitration catalyst comprises the following steps: (1) weighing anatase type TiO2Soaking in ammonium metavanadate water solution, uniformly stirring, drying and calcining to obtain modified TiO2A carrier; (2) modified TiO after grinding2Mixing and stirring uniformly a carrier, an ammonium heptamolybdate aqueous solution or an ammonium metatungstate aqueous solution, a rare earth metal precursor aqueous solution, a transition metal precursor aqueous solution, a forming auxiliary agent, a binder and deionized water to form a paste, and extruding, forming, drying and calcining to obtain the denitration catalystAn oxidizing agent. The preparation method of the denitration catalyst adopts the first-directional carrier TiO2Upper load V2O5Reloading of MoO3/WO3Rare earth metal oxides, transition metal oxides, and methods of forming TiO2‑V2O5The structure of the auxiliary agent oxide improves the integral denitration activity of the catalyst, widens the activity temperature window of the catalyst and reduces the SO of the catalyst2/SO3And (4) conversion rate.
Description
Technical Field
The invention relates to the technical field of selective catalytic reduction catalysts, in particular to a denitration catalyst and a preparation method thereof.
Background
The Selective Catalytic Reduction (SCR) technology is the most popular denitration technology at present and is widely applied to coal-fired power plants at home and abroad. The core of SCR technology is a denitration catalyst, and the formula of the denitration catalyst is generally V2O5-MoO3(WO3)/TiO2Due to the vanadium-titanium based catalyst to SO2Having oxidizing power, SO being formed3Will further react with NH in the flue gas3And H2And O, reacting to generate ammonium bisulfate. At a lower flue gas temperature, ammonium bisulfate is attached to the catalyst in a viscous liquid state, so that the ammonium bisulfate is inactivated, and in addition, the activity temperature range of the vanadium-titanium based catalyst is 320-420 ℃, and the catalyst cannot exert a good denitration effect when the activity temperature range exceeds the temperature range.
Therefore, a low SO catalyst with a wide active temperature window was developed2/SO3The denitration catalyst with the conversion rate becomes an urgent problem to be solved in the field of air pollution prevention and control.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a preparation method of a denitration catalyst, which improves the integral denitration activity of the catalyst, widens the activity temperature window of the catalyst and reduces the SO2/SO3 conversion rate of the catalyst.
The second purpose of the invention is to provide a denitration catalyst prepared by the preparation method, and the denitration catalyst has a wide activity temperature window and low SO2/SO3And (4) conversion rate.
In order to solve the technical problem, the invention provides a preparation method of a denitration catalyst, which is characterized by comprising the following steps:
(1) weighing anatase type TiO2Soaking in ammonium metavanadate water solution, uniformly stirring, drying and calcining to obtain modified TiO2A carrier;
(2) modified TiO after grinding2The denitration catalyst is prepared by uniformly mixing and stirring a carrier, an ammonium heptamolybdate aqueous solution or an ammonium metatungstate aqueous solution, a rare earth metal precursor aqueous solution, a transition metal precursor aqueous solution, a forming auxiliary agent, a binder and deionized water to form a paste, and then extruding, forming, drying and calcining the paste.
Preferably, the calcination in the step (1) specifically comprises calcination at 400-500 ℃ for 1-4h in an air atmosphere, and calcination at 500-700 ℃ for 1-4h in an air atmosphere containing water vapor.
Preferably, the volume concentration of the water vapor is 1-10%.
Preferably, the calcination in the step (2) specifically comprises calcination at 450-600 ℃ for 1-4h in an air atmosphere.
Preferably, the rare earth metal precursor is one of neodymium nitrate, praseodymium nitrate, samarium nitrate and holmium nitrate.
Preferably, the transition metal precursor is one of niobium acetate, ruthenium nitrate, rhodium nitrate and yttrium nitrate.
Preferably, the forming aid is one of sesbania powder, graphite, paraffin and polyvinyl alcohol, and the adding amount of the forming aid is 1-5% of the mass of anatase TiO 2.
Preferably, the binder is one of kaolin, diatomite, sepiolite and montmorillonite, and the addition amount of the binder is 1-5% of the mass of anatase TiO 2.
In addition, the invention also provides the denitration catalyst prepared by the preparation method.
Preferably, V of the denitration catalyst provided by the invention2O5The mass content of (A) is 1-3%, MoO3Or WO3The mass content of (A) is 2-8%, the mass content of rare earth metal oxide is 0.5-2%, and the mass content of transition metal oxide is 1-5%.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a step-by-step impregnation mode, and firstly carries out impregnation on TiO carrier2The active component V2O5 is loaded on the surface to promote V2O5Dispersing on a carrier while enhancing V2O5Interaction with the support, followed by moderate adjustment of V by subsequent treatment with water vapor2O5To enhance the denitration activity of the catalyst without increasing the SO thereof2/SO3The purpose of the conversion.
(2) The invention adopts a double-doping form of rare earth metal and transition metal, utilizes the original denitration performance of rare earth metal oxide and the promotion effect of the denitration performance on the reduction performance of the catalyst, further improves the integral denitration activity of the catalyst, and widens the active temperature window of the catalyst. Enhancing the acidity of the catalyst towards NH by using the acidity of the transition metal oxide3To inhibit SO by the catalyst2Thereby reducing the SO of the catalyst2/SO3And (4) conversion rate.
(3) The invention adopts the first load V2O5Reloading of MoO3/WO3Rare earth metal oxides, transition metal oxides, and methods of forming TiO2-V2O5The structure of the auxiliary oxide, the alkali metal in the smoke is in limited contact with the auxiliary oxide, so that the alkali metal toxicity resistance of the catalyst is improved.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
Firstly weighing anatase type TiO2Soaking in ammonium metavanadate water solution, stirring for 1 hr, oven drying, calcining at 500 deg.C for 1 hr in air atmosphere, and calcining at 500 deg.C for 2 hr in air atmosphere containing 10 vol% water vapor to obtain modified TiO2A carrier;
then grinding the modified TiO2Fully mixing and stirring a carrier, an ammonium heptamolybdate aqueous solution, a neodymium nitrate aqueous solution, a niobium acetate aqueous solution, sesbania powder, kaolin and deionized water for 4 hours, wherein the addition amount of the sesbania powder is anatase TiO25% of the mass of the kaolin, wherein the adding amount of the kaolin is anatase type TiO21% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 550 ℃ for 2h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O5Is 1.5% by mass, MoO35% by mass of Nd2O30.5% by mass of Nb2O5The mass content of (A) is 1.5%.
Example 2
Firstly weighing anatase type TiO2Soaking in ammonium metavanadate water solution, stirring for 4 hr, oven drying, calcining at 400 deg.C for 4 hr in air atmosphere, and calcining at 550 deg.C for 1 hr in air atmosphere containing water vapor with volume concentration of 5% to obtain modified TiO2A carrier;
then grinding the modified TiO2Fully mixing and stirring a carrier, an ammonium metatungstate aqueous solution, a praseodymium nitrate aqueous solution, a ruthenium nitrate aqueous solution, graphite, sepiolite and deionized water for 2 hours, wherein the adding amount of the graphiteIs anatase type TiO23% of the total mass of the sepiolite powder, and the addition amount of the sepiolite powder is anatase type TiO23% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 500 ℃ for 3h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O51% by mass of (B), WO3Is 4% by mass, Pr6O111% by mass of RuO4The mass content of (b) is 1%.
Example 3
Firstly weighing anatase type TiO2Soaking in ammonium metavanadate water solution, stirring for 3 hr, oven drying, calcining at 450 deg.C for 3 hr in air atmosphere, and calcining at 650 deg.C for 3 hr in air atmosphere containing 3 vol% water vapor to obtain modified TiO2A carrier;
then grinding the modified TiO2Fully mixing and stirring a carrier, an ammonium heptamolybdate aqueous solution, a samarium nitrate aqueous solution, a rhodium nitrate aqueous solution, paraffin, montmorillonite and deionized water for 2 hours, wherein the addition amount of the paraffin is anatase TiO22 percent of the mass of the montmorillonite, and the addition amount of the montmorillonite is anatase type TiO22% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 450 ℃ for 4h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O5Is 3% by mass, MoO3Or WO38% of Sm2O31% by mass of Rh2O3The mass content of (A) is 5%.
Example 4
Firstly weighing anatase type TiO2Soaking in ammonium metavanadate water solution, stirring for 2 hr, oven drying, calcining at 450 deg.C for 2 hr in air atmosphere, and calcining at 700 deg.C for 4 hr in air atmosphere containing water vapor with volume concentration of 1% to obtain modified TiO2A carrier;
then grinding the modified TiO2Carrier and ammonium metatungstate water solutionFully mixing and stirring the solution, holmium nitrate aqueous solution, yttrium nitrate aqueous solution, polyvinyl alcohol, diatomite and deionized water for 1h, wherein the addition amount of the polyvinyl alcohol is anatase TiO25 percent of the total weight of the diatomite is anatase type TiO21% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 600 ℃ for 1h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O5In an amount of 2% by mass, WO3Has a mass content of 2 percent, Ho2O3Is 2% by mass, Y2O3The mass content of (B) is 3%.
Comparative example 1
Weighing anatase type TiO2Sequentially adding an ammonium metavanadate aqueous solution, an ammonium heptamolybdate aqueous solution, a neodymium nitrate aqueous solution, a niobium acetate aqueous solution, sesbania powder, kaolin and deionized water, and fully mixing and stirring for 4 hours, wherein the addition amount of the sesbania powder is anatase TiO25% of the mass of the kaolin, wherein the adding amount of the kaolin is anatase type TiO21% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 550 ℃ for 2h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O5Is 1.5% by mass, MoO35% by mass of Nd2O30.5% by mass of Nb2O5The mass content of (A) is 1.5%.
Comparative example 2
Firstly weighing anatase type TiO2Soaking in ammonium metavanadate water solution, stirring for 4 hr, oven drying, calcining at 400 deg.C for 4 hr in air atmosphere, and calcining at 550 deg.C for 1 hr in air atmosphere containing water vapor with volume concentration of 5% to obtain modified TiO2A carrier;
then grinding the modified TiO2Fully mixing and stirring the carrier, the ammonium metatungstate aqueous solution, the graphite, the sepiolite and the deionized water for 2 hours, wherein the adding amount of the graphite is anatase TiO2Mass of3 percent of the total amount of the sepiolite is anatase type TiO23% of the mass of (c);
stirring to form a paste, extruding, molding, drying, and calcining at 500 ℃ for 3h in an air atmosphere to obtain the denitration catalyst, wherein V in the obtained denitration catalyst2O51% by mass of (B), WO3The mass content of (b) is 4%.
Experimental example 1
The denitration catalysts prepared in examples 1 to 4 and comparative examples 1 to 2 were subjected to a denitration performance test. And (3) testing conditions are as follows: NH (NH)3Concentration 500ppm, NH3/NO＝1，SO2Concentration 400ppm, H2O concentration 5%, N2For balance gas, GHSV is 60000h-1. The test results are shown in table 1:
TABLE 1 denitration efficiency of different denitration catalysts
As can be seen from Table 1, the catalyst prepared by the method has high denitration efficiency and excellent denitration performance within the temperature range of 220-420 ℃.
Experimental example 2
The denitration catalysts prepared in examples 1 to 4 and comparative examples 1 to 2 were prepared as flat plate type denitration catalysts, and then full-scale pilot SO2/SO3Conversion (monolayer) test. The test conditions were as follows: the pitch of the catalyst is 6mm, the wall thickness is 1mm, the flue gas temperature is 370 ℃, and H is2O content 9%, O2Concentration 3.5%, NH3Concentration 400ppm, NH3/NO＝1，SO2The concentration was 300 ppm. The test results are shown in table 2:
TABLE 2 SO of different denitration catalysts2/SO3Conversion (Single layer)
| Sample (I) | SO2/SO3Conversion (Single layer) |
| Example 1 | 0.16 |
| Example 2 | 0.15 |
| Example 3 | 0.23 |
| Example 4 | 0.21 |
| Comparative example 1 | 0.35 |
| Comparative example 2 | 0.32 |
As can be seen from Table 2, the catalyst SO prepared by the process of the invention2/SO3The conversion rate is low.
Experimental example 3
The denitration catalysts prepared in examples 1 to 4 and comparative examples 1 to 2 were subjected to an anti-poisoning performance test, and K was loaded to the catalysts at 1% each2O, according to the test conditions in Experimental example 1, was tested at 370 ℃. The test results are shown in table 3:
TABLE 3 denitration efficiency of different denitration catalysts
| Sample (I) | Denitration efficiency (%) |
| Example 1 | 79.7 |
| Example 2 | 78.5 |
| Example 3 | 80.4 |
| Example 4 | 81.3 |
| Comparative example 1 | 41.5 |
| Comparative example 2 | 35.2 |
In summary, the denitration catalysts prepared in the embodiments 1 to 4 of the present invention have various performances obviously superior to those of the comparative examples 1 to 2, and it can be seen that the present invention adopts the pre-oriented TiO carrier2Upper load V2O5Reloading of MoO3/WO3Rare earth metal oxides, transition metal oxides, and methods of forming TiO2-V2O5The structure of the auxiliary agent oxide improves the integral denitration activity of the catalyst, widens the activity temperature window of the catalyst and reduces the SO of the catalyst2/SO3The conversion rate improves the alkali metal toxicity resistance of the catalyst.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or alterations do not depart from the essence of the corresponding technical solution.
Claims (10)
1. A preparation method of a denitration catalyst is characterized by comprising the following steps:
(1) weighing anatase type TiO2Soaking in ammonium metavanadate water solution, uniformly stirring, drying and calcining to obtain modified TiO2A carrier;
(2) modified TiO after grinding2The denitration catalyst is prepared by uniformly mixing and stirring a carrier, an ammonium heptamolybdate aqueous solution or an ammonium metatungstate aqueous solution, a rare earth metal precursor aqueous solution, a transition metal precursor aqueous solution, a forming auxiliary agent, a binder and deionized water to form a paste, and then extruding, forming, drying and calcining the paste.
2. The method according to claim 1, wherein the calcination in step (1) comprises calcination at 400 to 500 ℃ for 1 to 4 hours in an air atmosphere, and calcination at 500 to 700 ℃ for 1 to 4 hours in an air atmosphere containing water vapor.
3. The method according to claim 2, wherein the water vapor has a volume concentration of 1 to 10%.
4. The preparation method according to claim 1, wherein the calcining in the step (2) specifically comprises calcining at 450-600 ℃ for 1-4h in an air atmosphere.
5. The preparation method according to claim 1, wherein the rare earth metal precursor is one of neodymium nitrate, praseodymium nitrate, samarium nitrate and holmium nitrate.
6. The method according to claim 1, wherein the transition metal precursor is one of niobium acetate, ruthenium nitrate, rhodium nitrate, and yttrium nitrate.
7. The preparation method according to claim 1, wherein the forming aid is one of sesbania powder, graphite, paraffin wax and polyvinyl alcohol, and the addition amount is 1-5% of the mass of anatase TiO 2.
8. The preparation method according to claim 1, wherein the binder is one of kaolin, diatomite, sepiolite and montmorillonite, and the addition amount is 1-5% by mass of anatase TiO 2.
9. A denitration catalyst produced by the production method according to any one of claims 1 to 8.
10. The denitration catalyst of claim 9, wherein V is2O5The mass content of (A) is 1-3%, MoO3Or WO3The mass content of (A) is 2-8%, the mass content of rare earth metal oxide is 0.5-2%, and the mass content of transition metal oxide is 1-5%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289011A (en) * | 2021-12-29 | 2022-04-08 | 大唐南京环保科技有限责任公司 | Denitration catalyst with wide activity temperature window and preparation method and application thereof |
| CN114433083A (en) * | 2021-12-29 | 2022-05-06 | 深圳华明环保科技有限公司 | Preparation method of catalyst for denitration and dioxin degradation |
| CN115739175A (en) * | 2022-12-02 | 2023-03-07 | 大唐南京环保科技有限责任公司 | Flat plate type high-temperature denitration catalyst and preparation method and application thereof |
| WO2024022073A1 (en) * | 2022-07-26 | 2024-02-01 | 安徽元琛环保科技股份有限公司 | Preparation method for sulfur poisoning-resistant electric denitration catalyst |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040180783A1 (en) * | 2003-03-14 | 2004-09-16 | Shigeru Nojima | Flue gas denitration catalyst and preparation process |
| WO2009031234A1 (en) * | 2007-09-07 | 2009-03-12 | Babcock-Hitachi Kabushiki Kaisha | Exhaust gas purification catalyst |
| CN105597730A (en) * | 2015-08-17 | 2016-05-25 | 中国石油大学(北京) | Honeycomb vanadium series denitration preformed catalyst, and preparation method and use thereof |
| CN110327910A (en) * | 2019-08-12 | 2019-10-15 | 大唐南京环保科技有限责任公司 | A kind of collaboration denitration demercuration catalyst and preparation method thereof |
| CN110508273A (en) * | 2019-07-26 | 2019-11-29 | 华侨大学 | A kind of low temperature vanadium titanium-based SCR denitration and preparation method thereof |
| CN113164921A (en) * | 2018-12-14 | 2021-07-23 | 巴斯夫公司 | Method for producing vanadium catalyst |
-
2021
- 2021-08-18 CN CN202110950910.6A patent/CN113522272B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040180783A1 (en) * | 2003-03-14 | 2004-09-16 | Shigeru Nojima | Flue gas denitration catalyst and preparation process |
| WO2009031234A1 (en) * | 2007-09-07 | 2009-03-12 | Babcock-Hitachi Kabushiki Kaisha | Exhaust gas purification catalyst |
| CN105597730A (en) * | 2015-08-17 | 2016-05-25 | 中国石油大学(北京) | Honeycomb vanadium series denitration preformed catalyst, and preparation method and use thereof |
| CN113164921A (en) * | 2018-12-14 | 2021-07-23 | 巴斯夫公司 | Method for producing vanadium catalyst |
| CN110508273A (en) * | 2019-07-26 | 2019-11-29 | 华侨大学 | A kind of low temperature vanadium titanium-based SCR denitration and preparation method thereof |
| CN110327910A (en) * | 2019-08-12 | 2019-10-15 | 大唐南京环保科技有限责任公司 | A kind of collaboration denitration demercuration catalyst and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘雪松等: "水热处理和钨添加对低钒催化剂高温脱硝性能的影响" * |
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