CN101507923A - Preparation method of catalyst for sintering flue gas and desulfurizing and denitrifying - Google Patents
Preparation method of catalyst for sintering flue gas and desulfurizing and denitrifying Download PDFInfo
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- CN101507923A CN101507923A CNA2009100808370A CN200910080837A CN101507923A CN 101507923 A CN101507923 A CN 101507923A CN A2009100808370 A CNA2009100808370 A CN A2009100808370A CN 200910080837 A CN200910080837 A CN 200910080837A CN 101507923 A CN101507923 A CN 101507923A
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- CN
- China
- Prior art keywords
- catalyst
- flue gas
- preparation
- denitrifying
- desulfurizing
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Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 17
- 239000003546 flue gas Substances 0.000 title claims description 16
- 238000005245 sintering Methods 0.000 title claims description 13
- 230000003009 desulfurizing effect Effects 0.000 title claims description 10
- 238000000034 method Methods 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000571 coke Substances 0.000 claims abstract description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011651 chromium Substances 0.000 claims abstract description 7
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000000703 Cerium Chemical class 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 4
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910021555 Chromium Chloride Inorganic materials 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 claims description 3
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 claims description 3
- 229910000333 cerium(III) sulfate Inorganic materials 0.000 claims description 3
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 claims description 3
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 claims description 3
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910052754 neon Inorganic materials 0.000 claims 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims 1
- 239000003517 fume Substances 0.000 abstract description 15
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000011261 inert gas Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000002912 waste gas Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract 1
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000010531 catalytic reduction reaction Methods 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a method for preparing a catalyst which can realize desulphurization and denitration of sintered fume at the same time, and belongs to the technical field of material preparation and waste gas treatment. In the method, chromium and cerium are taken as main components, active carbon or active coke is taken as a carrier, and the materials are soaked and burned in the atmosphere of inert gas to obtain the catalyst which can effectively catalyze NH3 and reduce NOx into N2 at a low temperature; the catalyst has high low-temperature activity, and can tolerate the interference of as high as 6 percent of CO in the system; and simultaneously, the catalyst can also catalyze and oxidize SO2 into SO3 and store the SO3 in the form of (NH4)2SO4, so that the reutilization of the SO2 in the waste gas is realized, and the catalyst has wider application prospect in the desulphurization and denitration operation of the sintered fume.
Description
Technical field
The present invention relates to a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying, belong to material preparation and technical field of waste gas treatment.
Background technology
Nitrogen oxide (the NO that stationary sources such as coal-fired plant boiler, steel enterprise sintering machine cause
x, comprise NO and NO
2) discharging become one of topmost source of atmospheric pollution of China.China is iron and steel the biggest in the world producing country, steel sintering flue gas NO
xDischarging accounts for NO
xTotal displacement 10% does not adopt denitration to handle as yet, and the serious threat ecological environment hinders economy, social sustainable development.The sinter fume complicated component contains NO
x, CO, O
2, N
2, SO
2With small amount of H Cl, the sinter fume temperature is lower in addition, and generally at 80～150 ℃, these factor decision sintering cigarettes are difficult to use common catalyst system and catalyzing to be handled.
The NO of fire coal boiler fume
xPollute control is the focus that people pay close attention to always, has developed SNCR (SNCR) at present and SCR denitration technologies such as (SCR) is used to control NO
xDischarging (thermal power generation, 2006,35 (11): 59-60,64; Environmental protection for electric power, 2006,22 (6): 37-39), and existing relative mature technique comes into operation.Yet different fire coal boiler fumes, the sinter fume of steel industry is difficult to directly adopt SNCR or SCR technology to be handled, because at first: sinter fume temperature lower (＜150 ℃) is difficult to reach 800 ℃ of the window temperature (〉 of SNCR method), also be starkly lower than 300 ℃ of the window temperature (〉 of SCR method); Therefore common SNCR and SCR catalyst system and catalyzing can not effectively play a role.Recently Kai Fa NO
xStorage and reduction technology (NSR) is the NO that purifies oxygen enrichment tail gas by " NOx catalysis storage-catalytic reduction " cycling
x(modern chemical industry, 2005,25 (8): 15-19).This method be earlier by catalyst with the low dense NO in the flue gas
xAbsorb, under higher temperature, make catalyst regeneration then by reducing agent, yet also has a large amount of carbon monoxide in the middle of the sinter fume, (5000ppm～60000ppm), the existence of so a large amount of reproducibility components makes the NSR technology almost not handle the possibility of sinter fume to its concentration between 0.5%～6%.
The desulfurization of sinter fume is paid attention to by vast smelter, has had much at present to be used to flue gas desulfurization such as methods such as calcium method, ammonia process.The desulfurization of calcium method is used wider owing to flexible operation, cost are lower, but the pressure of sinter fume is negative pressure, its pressure head is mainly from the blower unit of system back, calcium method desulfurization flow process has expended main pressure head, therefore flue gas has been difficult in by the denitrating catalyst bed, and therefore the sinter fume of smelter generally directly discharges atmosphere after desulfurization at present.As seen the catalyst system and catalyzing of developing a kind of desulphurization denitration simultaneously is extremely important to the processing of sinter fume.This method be intended to develop a kind of can simultaneous oxidation SO
2Be SO
3Removed, can catalytic reduction of NOx be N again
2Finish innoxious new catalyst.Preparation of catalysts method with respect to a kind of low-temperature selective catalytic reduction nitrogen oxide that the inventor applied for, creationary among the present invention with in activated carbon and the activated coke introducing catalyst system and catalyzing, because activated carbon and activated coke make this catalyst system and catalyzing have catalytic oxidation SO in the metallic element acting in conjunction of narrating with this method
2Be SO
3Ability, thereby both brought into play the effect of metallic element catalytic reduction of NOx, shown the ability of desulfurization simultaneously again.
Summary of the invention
The objective of the invention is to low at the sinter fume temperature, contain the big characteristics of CO amount, develop a kind of catalyst of the desulphurization denitration of while efficiently that can between 80～200 ℃, use, thus can be in this temperature range effective catalyzing N H
3And NO
xGenerate N
2Reaction, and the interference of CO in can the tolerance system, in addition with respect to the Preparation of catalysts method of a kind of low-temperature selective catalytic reduction nitrogen oxide that the inventor applied for, creationary among the present invention activated carbon and activated coke are introduced in the catalyst system and catalyzing, this makes this catalyst can also be the SO in the flue gas
2Be oxidized to SO
3And absorb, for removing the NO in the flue gas simultaneously
xAnd SO
2A kind of new catalyst is provided.
The objective of the invention is to realize by the following technical solutions: a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying is characterized in that:
Solubility cerium salt and soluble chromium (III) salt are dissolved in the solvent, wherein the molar ratio of chromium and cerium is 1:1～1:5, porous carrier is dropped in this solution, the consumption of porous carrier is 0.01～0.1mol metallic element/10g porous carrier, heating under agitation, it is dried that solvent is evaporated into gradually, under inert gas shielding, calcined 3～5 hours down in 400～600 ℃, obtain chromium/cerium oxide catalyst;
Technical characterictic of the present invention also is: the chromium element in the described method and the preferred molar ratio of Ce elements are 1:1～1:4; Cerium salt in the described method can be selected from any one or several mixture arbitrarily in the middle of the cerous nitrate, cerous sulfate, cerium chloride; Chromic salts in the described method can be any one or several mixture arbitrarily in the middle of the chromic nitrate (III), chromium sulfate (III), chromium chloride (III); Porous carrier in the described method can be active carbon or activated coke, and its specific area is at 200～1000m
2Between/the g; Solvent in the described method is selected from any one or several mixture arbitrarily in the middle of the methyl alcohol, ethanol, acetone, water; Solvent in the described method is evaporated to dried under the temperature that is higher than 5～10 ℃ of solvent self boiling points.
The available catalyst of this method has following characteristics: (1) is catalyzing N H at low temperatures
3Reductive NO
xAnd obtain the reaction of nitrogen, and in can the tolerance system concentration up to the interference of 6% CO component; (2) this method can obtain good, the anti abrasive catalyst of granule strength, helps adopting in fluidized bed process.(3) the prepared catalyst of this method can be with SO
2Be oxidized to SO
3, and and the ammonia react that sprays into system become (NH
4)
2SO
4And be stored.As catalyst absorption SO
3After saturated, can feed hot nitrogen and make it regeneration, and can by-product (NH
4)
2SO
4, can finish SO simultaneously like this
2The resource of the improvement of pollutant and S element.
The specific embodiment
The Preparation of catalysts method of a kind of low-temperature selective catalytic reduction nitrogen oxide provided by the invention, its concrete process is as follows:
Solubility cerium salt and soluble chromium (III) salt are dissolved in the solvent, wherein the molar ratio of chromium and cerium is 1:1～1:5, porous carrier is dropped in this solution, the consumption of porous carrier is 0.01～0.1mol metallic element/10g porous carrier, heating under agitation, it is dried that solvent is evaporated into gradually, under inert gas shielding, calcined 3～5 hours down in 400～600 ℃, obtaining with active carbon or activated coke is the chromium/cerium oxide catalyst of carrier;
Enumerate several specific embodiments below, understand the present invention with further.
Embodiment 1:
0.1mol chromic nitrate and 0.3mol cerous nitrate are dissolved in the 300mL ethanol, and to wherein adding the 40g activated carbon granule, its specific area is 800m
2/ g adds the thermal agitation evaporate to dryness with this system under 90 ℃, calcination is 3 hours in 400 ℃ of following nitrogen atmospheres, obtains under the low temperature catalyst of desulphurization denitration simultaneously.
Embodiment 2:
0.1mol chromium sulfate and 0.5mol cerium chloride are dissolved in the 500mL water, to wherein adding 600g activated coke particle, its specific area 200m
2/ g adds the thermal agitation evaporate to dryness with this system under 110 ℃, calcination is 5 hours in 600 ℃ of following argon gas atmosphere, obtains under the low temperature catalyst of desulphurization denitration simultaneously.
Embodiment 3:
0.1mol chromium chloride and 0.1mol cerous sulfate are dissolved in the 200mL water, to wherein adding 40g activated coke particle, its specific area 600m
2/ g adds the thermal agitation evaporate to dryness with this system under 105 ℃, calcination is 4 hours in 500 ℃ of following helium atmospheres, obtains under the low temperature catalyst of desulphurization denitration simultaneously.
Embodiment 4:
1mol chromic nitrate and 3mol cerous nitrate are dissolved in the 5000mL methyl alcohol, to wherein adding 1000g activated coke particle, its specific area 500m
2/ g adds the thermal agitation evaporate to dryness with this system under 70 ℃, calcination is 4 hours in 500 ℃ of following nitrogen atmospheres, obtains under the low temperature catalyst of desulphurization denitration simultaneously.
Claims (6)
1. Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying is characterized in that:
Solubility cerium salt and soluble chromium (III) salt are dissolved in the solvent; wherein the molar ratio of chromium and cerium is 1:1～1:5; porous carrier is dropped in this solution; the consumption of porous carrier is 0.01～0.1mol metallic element/10g porous carrier; heating under agitation, it is dried that solvent is evaporated into gradually, under the protection of any one or arbitrarily several mixture in the middle of nitrogen, argon gas, helium, the neon; calcined 3～5 hours down in 400～600 ℃, obtain chromium/cerium oxide catalyst.
2. a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying as claimed in claim 1 is characterized in that: the chromium element in the described method and the mol ratio of Ce elements are 1:1～1:4.
3. a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying as claimed in claim 1 is characterized in that: the cerium salt in the described method can be selected from any one or several mixture arbitrarily in the middle of the cerous nitrate, cerous sulfate, cerium chloride.
4. a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying as claimed in claim 1 is characterized in that: the chromic salts in the described method can be selected from any one or several mixture arbitrarily in the middle of the chromic nitrate (III), chromium sulfate (III), chromium chloride (III).
5. a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying as claimed in claim 1 is characterized in that: the solvent in the described method is selected from any one or several mixture arbitrarily in the middle of the methyl alcohol, ethanol, acetone, water.
6. a kind of Preparation of catalysts method that is used for sintering flue gas and desulfurizing and denitrifying as claimed in claim 1, it is characterized in that: the porous carrier in the described method can be the mixture of any one or both in the middle of the active carbon, activated coke, and its specific area is at 200～1200m
2Between/the g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100808370A CN101507923B (en) | 2009-03-24 | 2009-03-24 | Preparation method of catalyst for sintering flue gas and desulfurizing and denitrifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100808370A CN101507923B (en) | 2009-03-24 | 2009-03-24 | Preparation method of catalyst for sintering flue gas and desulfurizing and denitrifying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101507923A true CN101507923A (en) | 2009-08-19 |
| CN101507923B CN101507923B (en) | 2010-12-08 |
Family
ID=41000552
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100808370A Expired - Fee Related CN101507923B (en) | 2009-03-24 | 2009-03-24 | Preparation method of catalyst for sintering flue gas and desulfurizing and denitrifying |
Country Status (1)
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|---|---|
| CN (1) | CN101507923B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641651A (en) * | 2012-03-30 | 2012-08-22 | 四川大学 | Low-temperature active carbon-based desulfurizing agent and preparation method thereof |
| CN103433034A (en) * | 2013-09-13 | 2013-12-11 | 国电环境保护研究院 | Low-temperature SCR (Selective Catalytic Reduction) catalyst based on active coke loaded manganese-cerium composite oxide and preparation method of low-temperature SCR catalyst |
| CN104984660A (en) * | 2015-06-24 | 2015-10-21 | 方耀 | Coal-fired flue gas pollutant treatment method |
| CN105032445A (en) * | 2015-07-24 | 2015-11-11 | 四川大学 | Mn-Ni bimetal doped activated carbon base desulfurization catalyst and preparation method thereof |
| CN105032403A (en) * | 2015-07-07 | 2015-11-11 | 四川大学 | Catalyst used for low temperature desulphurization and denitration of flue gas and preparation method thereof |
| CN107597140A (en) * | 2017-11-06 | 2018-01-19 | 李建州 | A kind of low-temp desulfurization denitrating catalyst and flue gas low-temperature integration desulfurization denitration method |
| CN109482052A (en) * | 2018-12-06 | 2019-03-19 | 中国科学院过程工程研究所 | CO and NO in a kind of purifying sintering flue gasxDevice and method |
| CN112403487A (en) * | 2020-11-22 | 2021-02-26 | 浙江盛旺环境工程有限公司 | Medium-low temperature vanadium-free desulfurization and denitrification catalyst and preparation method thereof |
| CN115582114A (en) * | 2022-11-29 | 2023-01-10 | 山东格瑞德环保科技有限公司 | Catalyst for treating nitrogen oxides and VOCs (volatile organic compounds) in cooperation and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100473456C (en) * | 2007-02-07 | 2009-04-01 | 南开大学 | Catalyst for SCR denitration in boiler low-temperature fume and preparation method thereof |
-
2009
- 2009-03-24 CN CN2009100808370A patent/CN101507923B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641651A (en) * | 2012-03-30 | 2012-08-22 | 四川大学 | Low-temperature active carbon-based desulfurizing agent and preparation method thereof |
| CN103433034A (en) * | 2013-09-13 | 2013-12-11 | 国电环境保护研究院 | Low-temperature SCR (Selective Catalytic Reduction) catalyst based on active coke loaded manganese-cerium composite oxide and preparation method of low-temperature SCR catalyst |
| CN104984660A (en) * | 2015-06-24 | 2015-10-21 | 方耀 | Coal-fired flue gas pollutant treatment method |
| CN105032403A (en) * | 2015-07-07 | 2015-11-11 | 四川大学 | Catalyst used for low temperature desulphurization and denitration of flue gas and preparation method thereof |
| CN105032445A (en) * | 2015-07-24 | 2015-11-11 | 四川大学 | Mn-Ni bimetal doped activated carbon base desulfurization catalyst and preparation method thereof |
| CN107597140A (en) * | 2017-11-06 | 2018-01-19 | 李建州 | A kind of low-temp desulfurization denitrating catalyst and flue gas low-temperature integration desulfurization denitration method |
| CN109482052A (en) * | 2018-12-06 | 2019-03-19 | 中国科学院过程工程研究所 | CO and NO in a kind of purifying sintering flue gasxDevice and method |
| CN112403487A (en) * | 2020-11-22 | 2021-02-26 | 浙江盛旺环境工程有限公司 | Medium-low temperature vanadium-free desulfurization and denitrification catalyst and preparation method thereof |
| CN115582114A (en) * | 2022-11-29 | 2023-01-10 | 山东格瑞德环保科技有限公司 | Catalyst for treating nitrogen oxides and VOCs (volatile organic compounds) in cooperation and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101507923B (en) | 2010-12-08 |
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