CN112121831A - Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof - Google Patents
Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000011593 sulfur Substances 0.000 title claims abstract description 25
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 25
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 16
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 10
- 229940010552 ammonium molybdate Drugs 0.000 claims description 10
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 10
- 239000011609 ammonium molybdate Substances 0.000 claims description 10
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 10
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 9
- 235000006408 oxalic acid Nutrition 0.000 claims description 9
- 239000005696 Diammonium phosphate Substances 0.000 claims description 8
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 8
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 8
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 8
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003546 flue gas Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 7
- 238000003915 air pollution Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract description 2
- 229910000510 noble metal Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 16
- 239000007789 gas Substances 0.000 description 6
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 239000010955 niobium Substances 0.000 description 3
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
- B01J27/198—Vanadium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention relates to the technical field of environmental protection and air pollution control, in particular to a wide-temperature sulfur-resistant and water-resistant vanadium-titanium denitration catalyst and a preparation method thereof. The denitration catalyst is TiO2As a carrier, with V2O5As an active component, MoO3、P2O5And Nb2O5Is used as an active assistant and is prepared by adopting an impregnation method. The denitration catalyst can remove the nitric oxide within the temperature range of 160-370 ℃ by loading trace noble metal elements, the efficiency is over 90 percent, and SO in the flue gas can be slowed downxAnd NH3The rate of the sulfite generated by the reaction of other substances is reduced, thereby reducing the influence on the activity of the denitration catalyst, effectively preventing the pore channel of the denitration catalyst from being blocked and prolonging the stress of the denitration catalystService life; and the influence of the flue gas with high water content on the catalyst can be reduced. The preparation method of the denitration catalyst provided by the invention is simple and easy to operate, and has high production efficiency.
Description
Technical Field
The invention relates to the technical field of environmental protection and air pollution control, in particular to a wide-temperature sulfur-resistant and water-resistant vanadium-titanium denitration catalyst and a preparation method thereof.
Background
Nitrogen oxides are one of main pollution sources causing air pollution, and are also one of the major factors directly causing haze weather, ozone layer damage and air pollution in various parts of China. The Selective Catalytic Reduction (SCR) technology using ammonia as a reducing agent is the most mature and efficient technology in the existing flue gas denitration technology.
The denitration catalyst is the core of the technology, and the performance of the denitration catalyst is a main factor for determining the denitration effect and the economical efficiency of the whole system. Under the special flue gas condition, the flue gas treatment of some industrial kilns and the like needs an expensive heat exchanger system and needs to consume a large amount of energy to heat the flue gas, so that the equipment investment cost and the operation cost of the flue gas treatment are high; SO in flue gas under low temperature working conditionxWill react with NH3Other substances react to generate sulfite substances which can accelerate the deactivation of the catalyst and shorten the service life of the catalyst; the higher flue gas of moisture content also can influence the denitration effect of catalyst.
Aiming at the problems in the prior art, the sulfur-resistant water-resistant denitration catalyst with wide temperature range and high activity is developed, SO that a large amount of energy wasted by reheating low-temperature flue gas can be reduced, the investment cost of equipment can be reduced, and SO in the flue gas can be reducedxAnd NH3And the like, so that the influence on the activity of the denitration catalyst is reduced, and the service life of the catalyst is prolonged.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention overcomes the defects of the prior art, provides a wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst, can realize high-efficiency denitration under the conditions of wide temperature, high sulfur and high water flue gas, slows down the inactivation of the catalyst, prolongs the service life of the catalyst, and also provides a preparation method thereof.
The invention is realized by adopting the following technical scheme:
the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst is prepared from TiO2As a carrier, with V2O5As an active component, MoO3、P2O5And Nb2O5Is a coagent, wherein TiO2Preferably anatase type TiO2。
The catalyst comprises the following components in percentage by mass: TiO 2270-95 wt.%, V2O50 to 10 weight percent of MoO 30 to 20 wt%, P2O50 to 2 wt%, Nb2O5Is 0 to 0.1 wt%.
The chemical composition precursors of the components of the catalyst are respectively as follows: v2O5The precursor is ammonium metavanadate, MoO3The precursor is ammonium molybdate, P2O5The precursor is diammonium phosphate, and the Nb precursor is niobium pentoxide.
The preparation method of the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst adopts an impregnation method, and specifically comprises the following steps:
1) dissolving oxalic acid, monoethanolamine and ammonium metavanadate in a proper amount of deionized water, and stirring and dissolving at 50-70 ℃ until all the oxalic acid, monoethanolamine and ammonium metavanadate are dissolved to form a bluish clear solution;
2) sequentially adding ammonium molybdate, diammonium phosphate and niobium pentoxide into the solution generated in the step 1), and continuously stirring at the temperature of 50-70 ℃ until the ammonium molybdate, the diammonium phosphate and the niobium pentoxide are completely dissolved to form a bluish solution.
3) Quantitative determination of TiO2Slowly adding the carrier into the bluish solution prepared in the step 2), and stirring at 50-70 ℃ until the carrier is viscous.
Drying the sticky solid obtained in the step 3) in an oven to form blocks, then gradually heating, roasting for 5-6 hours at the temperature of 420-550 ℃, naturally cooling to room temperature, crushing and screening to 20-120 meshes to obtain the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst.
Wherein:
the mass ratio of oxalic acid, monoethanolamine, ammonium metavanadate, ammonium molybdate, diammonium phosphate, niobium pentoxide and titanium dioxide is 1-3:1:1:1.5:0.3:0.1-0.15: 20.
Compared with the prior art, the invention has the following beneficial effects:
1. the denitration catalyst prepared by loading trace noble metal elements can widen the catalytic temperature of the denitration catalyst, so that the efficiency of removing nitric oxides by the denitration catalyst in the temperature range of 160-370 ℃ can reach more than 90 percent, and a heat exchange and temperature rise device is not required to be additionally arranged.
2. The denitration catalyst prepared by the invention has excellent sulfur resistance, and can slow down SO in flue gas especially under low temperature conditionxAnd NH3And the like, so that the influence on the activity of the denitration catalyst is reduced, and the service life of the catalyst is prolonged.
3. The denitration catalyst prepared by the invention has excellent water resistance, is applied under the condition of high-moisture-content flue gas, is not interfered, keeps higher efficiency of removing nitric oxide and maintains longer service life of the catalyst
4. The preparation method provided by the invention has the advantages of rich raw material sources, simple operation and short preparation time, and is convenient for industrial production and application.
Drawings
FIG. 1 is Nb2O5-V2O5-MoO3-TiO2The denitration efficiency graphs of the catalyst at different temperatures, wherein curves (NO.1), (NO.2) and (NO.3) respectively correspond to the denitration efficiency curves of the samples of the examples 1, 2 and 3;
FIG. 2 is a graph showing the sulfur resistance and water resistance of catalyst # 1 obtained in example 1;
FIG. 3 is a graph showing the sulfur resistance and water resistance of the catalyst # 3 obtained in example 2;
FIG. 4 shows Nb2O5-V2O5-MoO3-TiO2XRD spectra of the samples, wherein curves (No.1) and (No.3) correspond to XRD spectra of the samples of example 1 and example 3 respectively.
Detailed Description
The present invention will be further described with reference to the following examples.
All the raw materials used in the examples are commercially available unless otherwise specified.
Example 1
Dissolving 2g of oxalic acid, 1g of monoethanolamine and 1g of ammonium metavanadate in 40g of deionized water, stirring and dissolving at 50 ℃, and completely dissolving until the solution becomes a bluish clear solution; 1.5g of ammonium molybdate, 0.3g of diammonium phosphate and 0.1g of Nb2O5Sequentially adding the mixture into the generated solution, continuously stirring at 50 ℃, and completely dissolving until the mixture becomes a bluish solution; 20g of TiO2Slowly adding the carrier into the solution, and stirring at 40 ℃ until the carrier is viscous; and (3) drying the obtained sticky solid in an oven, then placing the dried sticky solid in a muffle furnace, gradually heating to 450 ℃, roasting for 5 hours, naturally cooling to room temperature, crushing and screening to 20-120 meshes for later use to obtain the No.1 catalyst.
Example 2
Dissolving 4g of oxalic acid, 2g of monoethanolamine and 2g of ammonium metavanadate in 80g of deionized water, stirring and dissolving at 50 ℃, and completely dissolving until the solution becomes a bluish clear solution; 3g of ammonium molybdate, 0.6g of triammonium phosphate and 0.2g of Nb2O5Sequentially adding the mixture into the generated solution, continuously stirring at 50 ℃, and completely dissolving until the mixture becomes a bluish solution; 40g of TiO2Slowly adding the carrier into the solution, and stirring at 40 ℃ until the carrier is viscous; and (3) drying the obtained sticky solid in an oven, then placing the dried sticky solid in a muffle furnace, gradually heating to 450 ℃, roasting for 6 hours, naturally cooling to room temperature, crushing and screening to 20-120 meshes for later use to obtain the 2# catalyst.
Example 3
Dissolving 6g of oxalic acid, 2g of monoethanolamine and 2g of ammonium metavanadate in 80g of deionized water, stirring and dissolving at 50 ℃, and completely dissolving until the solution becomes a bluish clear solution; 3g of ammonium molybdate, 0.6g of triammonium phosphate and 0.25g of Nb2O5Sequentially adding the mixture into the generated solution, continuously stirring at 50 ℃, and completely dissolving until the mixture becomes a bluish solution; 40g of TiO2Slowly adding the carrier into the solution, and stirring at 40 ℃ until the carrier is viscous; drying the obtained viscous solid in an oven, then placing the dried viscous solid in a muffle furnace, roasting the viscous solid for 2 hours at the temperature of 250 ℃, and then roasting the viscous solid at the temperature of 450 DEG CRoasting for 5 hours, naturally cooling to room temperature, crushing and screening to 20-120 meshes for later use to obtain the 3# catalyst.
Test example 1
The denitration activity test was performed by taking the catalyst # 1 of example 1, the catalyst # 2 of example 2, and the catalyst # 3 of example 3 as examples, respectively. The feed gas composition being NOx(800ppm)、NH3(500ppm)，5％O2，N2As balance gas, 25 percent of water vapor and the space velocity of 30000h-1The denitration efficiency curve of the catalyst at 130-400 ℃ is tested, and the test result is shown in figure 1. The test result shows that the denitration efficiency of the catalyst can reach more than 90% at the temperature of 160-380 ℃, the high-activity interval is large, and the catalyst has good denitration performance. In the figure, No.1 corresponds to catalyst # 1 of example 1, No.2 corresponds to catalyst # 2 of example 2, and No.3 corresponds to catalyst # 3 of example 3.
Test example 2
A sulfur resistance experiment was performed with the catalyst # 1 of example 1. The feed gas composition being NOx(800ppm)、NH3(500ppm)，5％O2，SO2The concentration is 300mg/m3，N2As balance gas, 25 percent of water vapor and the space velocity of 30000h-1And carrying out sulfur-resistant and water-resistant experiments at 150 ℃, wherein the test results are shown in figure 2. The test time is 55 hours, and the denitration efficiency is reduced from 85.5 percent to 80.3 percent. No.1 in the figure corresponds to catalyst # 1 of example 1.
Test example 3
A sulfur and water resistance test was performed with the catalyst # 3 of example 3. The feed gas composition being NOx(800ppm)、NH3(500ppm)，5％O2，SO2The concentration is 300mg/m3，N2As balance gas, 25% of water vapor and the space velocity of 30000h-1The sulfur resistance test was carried out at 165 ℃ and 170 ℃ and the test results are shown in FIG. 3. When the temperature is 165 ℃, the test time is 250 hours, and the denitration efficiency is reduced from 97 percent to 84.5 percent. When the temperature is 170 ℃, the test time is 150 hours, and the denitration efficiency is reduced from 93 percent to 88 percent. No.3 in the figure corresponds to catalyst # 3 of example 3.
Test example 4
Are respectively implemented inThe catalyst # 1 of example 1 and the catalyst # 3 of example 3 were subjected to the X-ray diffraction test, and the test results are shown in FIG. 4. No.1 corresponds to catalyst # 1 of example 1, and No.3 corresponds to catalyst # 3 of example 3, and it can be seen from the graphs that only TiO is found in the XRD patterns of the two samples2The characteristic diffraction peak of (1) shows the highest peak at a diffraction angle 2 theta of 25.28 DEG, and V is not shown2O5、MoO3、Nb2O5The characteristic diffraction peak is buried in the back of the diffraction curve because the amount of the supported diffraction peak is small, and cannot be observed.
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.
Claims (6)
1. A wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst is characterized in that: the catalyst is TiO2As a carrier, with V2O5As an active component, MoO3、P2O5And Nb2O5Is a coagent.
2. The wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst of claim 1, which is characterized in that: the catalyst comprises the following components in percentage by mass: TiO 2270-95 wt.%, V2O50 to 10 weight percent of MoO30 to 20 wt%, P2O50 to 2 wt%, Nb2O5Is 0 to 0.1 wt%.
3. The wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst of claim 1, which is characterized in that: TiO 22TiO of anatase type2。
4. A method for preparing the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst as recited in any one of claims 1 to 3, characterized in that: the method comprises the following steps:
1) adding oxalic acid, monoethanolamine and ammonium metavanadate into deionized water, and stirring until all the oxalic acid, monoethanolamine and ammonium metavanadate are dissolved;
2) sequentially adding ammonium molybdate, diammonium phosphate and niobium pentoxide into the solution generated in the step 1), and continuously stirring until the ammonium molybdate, the diammonium phosphate and the niobium pentoxide are completely dissolved;
3) adding TiO into the mixture2Slowly adding the carrier into the solution prepared in the step 2), and then stirring until the carrier is viscous;
4) drying, roasting and cooling the viscous solid obtained in the step 3) to obtain the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst.
5. The preparation method of the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst according to claim 4, characterized in that: the mass ratio of oxalic acid, monoethanolamine, ammonium metavanadate, ammonium molybdate, diammonium phosphate, niobium pentoxide and titanium dioxide is 1-3:1:1:1.5:0.3:0.1-0.15: 20.
6. The preparation method of the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst according to claim 4, characterized in that: and 4) drying the sticky solid obtained in the step 3) in an oven to form blocks, gradually heating, roasting at the temperature of 420-550 ℃ for 5-6 hours, naturally cooling to room temperature, crushing and screening to 20-120 meshes to obtain the wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI855673B (en) * | 2023-05-08 | 2024-09-11 | 中國鋼鐵股份有限公司 | Vanadium-based denitration catalyst and method of making the same |
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| JP2000126591A (en) * | 1998-08-19 | 2000-05-09 | Ishikawajima Harima Heavy Ind Co Ltd | DeNOx catalyst |
| CN106732703A (en) * | 2016-12-16 | 2017-05-31 | 内蒙古华元科技有限公司 | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof |
| CN108212222A (en) * | 2017-12-29 | 2018-06-29 | 浙江德创环保科技股份有限公司 | A kind of porous honeycomb formula low-temperature denitration catalyst |
| CN109847769A (en) * | 2018-12-20 | 2019-06-07 | 北京长信太和节能科技有限公司 | A kind of low-temperature sulfur-resistant molybdenum-vanadium-titanium-based denitration catalyst, preparation method and application thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000126591A (en) * | 1998-08-19 | 2000-05-09 | Ishikawajima Harima Heavy Ind Co Ltd | DeNOx catalyst |
| CN106732703A (en) * | 2016-12-16 | 2017-05-31 | 内蒙古华元科技有限公司 | One kind is for smoke denitration of cement plant Ti-base catalyst and preparation method thereof |
| CN108212222A (en) * | 2017-12-29 | 2018-06-29 | 浙江德创环保科技股份有限公司 | A kind of porous honeycomb formula low-temperature denitration catalyst |
| CN109847769A (en) * | 2018-12-20 | 2019-06-07 | 北京长信太和节能科技有限公司 | A kind of low-temperature sulfur-resistant molybdenum-vanadium-titanium-based denitration catalyst, preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI855673B (en) * | 2023-05-08 | 2024-09-11 | 中國鋼鐵股份有限公司 | Vanadium-based denitration catalyst and method of making the same |
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Application publication date: 20201225 |