CN105148961A - SCR flue gas denitrification catalyst and preparation method therefor - Google Patents
SCR flue gas denitrification catalyst and preparation method therefor Download PDFInfo
- Publication number
- CN105148961A CN105148961A CN201510427343.0A CN201510427343A CN105148961A CN 105148961 A CN105148961 A CN 105148961A CN 201510427343 A CN201510427343 A CN 201510427343A CN 105148961 A CN105148961 A CN 105148961A
- Authority
- CN
- China
- Prior art keywords
- parts
- catalyst
- carrier
- flue gas
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to an SCR flue gas denitrification catalyst and belongs to the technical field of flue gas denitrification. The flue gas denitrification catalyst comprises the following components in parts by weight: 65-95 parts of a carrier, 5.5-15.5 parts of active ingredients and 4-16 parts of auxiliary materials, wherein the carrier comprises 65-85 parts of silicon carbide. According to the technical scheme, the invention provides the denitrification catalyst with the main component of the carrier being silicon carbide, and the catalyst can maintain a relatively high catalytic efficiency at 600 DEG C, so that the problem that a conventional titanium catalyst is inactivated at the temperature is solved, and the benefit is remarkable. The invention further relates to a preparation method for the SCR flue gas denitrification catalyst. The preparation method comprises two steps: carrier preparation; and catalyst preparation. According to the scheme provided by the invention, silicon carbide is surface oxidized by adopting an acidic hydrothermal method, metal salt is reduced to metal single element by virtue of strong reducing property of sodium borohydride, the metal single element is deposited on the surface of the carrier, and a final catalyst product is obtained through a series of processes, so that the catalyst has an industrial production prospect.
Description
Technical field
The present invention relates to a kind of denitrating catalyst, particularly a kind of SCR catalyst for denitrating flue gas, the invention still further relates to a kind of preparation method of SCR catalyst for denitrating flue gas, belong to gas denitrifying technology field.
Background technology
Nitrogen oxide (NO
x) be a kind of atmosphere pollution with high risks, all certain injury can be caused, as formed acid rain, photochemical fog etc., in today that environmental consciousness is more and more stronger with requirement to health and animals and plants existence, how to remove the discharge of nitrogen oxide, become more and more urgent problem.SCR (being called for short SCR) denitration refers under uniform temperature and catalyst action, utilizes reducing agent NH
3, methane, thiocarbamide, CO, H
2deng reducing agent optionally by NO
xbe reduced to free of contamination N
2, thus reaching the object purified air, the advantages such as it is lower that SCR denitration technology has reaction temperature, and purifying rate is high, reliable, and secondary pollution is little, are widely used in industrial application.
At present, in SCR system, take anatase titanium dioxide as carrier usually, load barium oxide is as active material.Wherein, carrier accounts for 80% ~ 90% of denitrating catalyst weight, and its performance is directly connected to denitration rate.Because titanium dioxide has good dimensional effect, skin effect, be applicable to denitrating catalyst to the demand of carrier.The denitration catalyst carrier TiO of domestic production
2manufacturing process is not easy shaping and demoulding, and porosity is undesirable, under the high temperature conditions after Long-Time Service, the fine-grain of anatase titanium dioxide very easily grows and changes to rutile-type, cause the rigid reunion of large grain size, specific area declines, and catalytic activity declines, thus produces the problem that denitration efficiency is low, service life is short.Domestic with TiO at present
2for the SCR catalyst denitration rate of carrier only has 80% ~ 85%, service life is about 25000h, if used in high-temperature flue gas for a long time, the life-span can reduce greatly, is unfavorable for carrying out smoothly of production.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of denitrating catalyst that can adapt to compared with elevated operating temperature, concrete technical scheme is as follows:
A kind of SCR catalyst for denitrating flue gas, described denitrating catalyst comprise carrier, active component and auxiliary material, three's parts by weight are:
65 ~ 95 parts, carrier
Active component 5.5 ~ 15.5 parts
Auxiliary material 4 ~ 16 parts
Described carrier includes the carborundum that parts by weight are 65 ~ 85 parts.
As the improvement of technique scheme, described carborundum is the nanometer silicon carbide of particle diameter in 10nm ~ 50nm scope.
As the improvement of technique scheme, also containing the ceria that parts by weight are 1 ~ 4 part in described carrier.
As the improvement of technique scheme, also containing the zirconium dioxide that parts by weight are 2 ~ 6 parts in described carrier.
As the improvement of technique scheme, it is the tungstic acid of 4 ~ 13 parts and the vanadic anhydride of 1.5 ~ 2.5 parts that described active component comprises parts by weight.
As the improvement of technique scheme, described auxiliary material comprise parts by weight be 1 ~ 6 part glass fibre, 1 ~ 5 part paper pulp cotton, the stearic acid of 1 ~ 3 part, the polyethylene glycol oxide of 1 ~ 2 part.
It is the denitrating catalyst of carborundum that technique scheme provides a kind of carrier main component, and can keep higher catalytic efficiency under 600 DEG C of conditions, thus solve the problem of traditional Titanium series catalyst inactivation under this temperature conditions, beneficial effect is remarkable.
Present invention also offers a kind of preparation method of above-mentioned SCR catalyst for denitrating flue gas, concrete technical scheme is as follows:
A preparation method for SCR catalyst for denitrating flue gas, comprises two steps: prepared by carrier; Catalyst preparing; Described carrier preparation technology is, 65 ~ 85 parts of carborundum are mixed to add in water heating kettle with nitric acid and is heated to impurities dissolves, silicon carbide powder is obtained after filtering post-drying, the ceria of 1 ~ 4 part and the zirconium dioxide of 2 ~ 6 parts is added in silicon carbide powder, add sodium borohydride, at silicon carbide cerium-carrying, zirconium simple substance, after washing, oven dry, roasting, obtain modified carbonize silicon carrier.
As the improvement of technique scheme, described method for preparing catalyst comprises following technique:
First, prepare active ingredient solution, ammonium metavanadate, MEA and water are mixed and made into ammonium metavanadate solution, ammonium tungstate, oxalic acid solution and water are mixed and made into ammonium tungstate solution;
Then, mixing roll is mixing, joins in mixing roll by modified carbonize silicon carrier, adds metavanadic acid ammonia solution, ammonium tungstate solution, glass fibre, paper pulp cotton, stearic acid, polyethylene glycol oxide, carry out mixing under low speed;
Finally, finished product prepare, mixing complete after through old, pre-extruded, extrude, primary drying, redrying, roasting, obtain SCR catalyst for denitrating flue gas product.
As the improvement of technique scheme, in described finished product preparation technology, the old time is 18h ~ 32h; Pre-extruded pressure 1Mpa ~ 4Mpa; Extrusion pressure 2Mpa ~ 5Mpa, temperature 26 DEG C ~ 30 DEG C; The primary drying time is 8 days ~ 12 days; The redrying time is 1 day ~ 2 days; Sintering temperature 580 DEG C ~ 650 DEG C, the time is 20h ~ 40h.
Technique scheme adopts sour hydro-thermal method to carry out surface oxidation to carborundum, metal salt back is become metal simple-substance by the strong reducing property of recycling sodium borohydride, be deposited on carrier surface, then through roasting, obtain modified carbonize silicon carrier, then carrier, active component, auxiliary material are carried out mixing, obtain final catalyst prod, the industrialization that can realize this SCR catalyst for denitrating flue gas is produced, and has significant practical value.
Detailed description of the invention
The invention provides a kind of SCR catalyst for denitrating flue gas, described denitrating catalyst comprise carrier, active component and auxiliary material, three's parts by weight are:
65 ~ 95 parts, carrier
Active component 5.5 ~ 15.5 parts
Auxiliary material 4 ~ 16 parts
In this technical scheme, carrier includes the carborundum that parts by weight are 65 ~ 85 parts, carborundum has the features such as high rigidity, highly corrosion resistant and higher elevated temperature strength, higher catalytic efficiency can be kept under 600 DEG C of conditions, thus solve the problem of traditional Titanium series catalyst inactivation under this temperature conditions.Further, carborundum is the nanometer silicon carbide of particle diameter in 10nm ~ 50nm scope, nanometer silicon carbide has the features such as specific area is large, high surface, apparent density are low, hardness is high, anti-wear performance is good, high thermoconductivity, low thermal coefficient of expansion and elevated temperature strength are large, meets the requirement of denitrating catalyst to carrier.
Further, also containing the ceria that parts by weight are 1 ~ 4 part in carrier, in prior art, often ceria is used as in auto-exhaust catalyst, utilize chemical reaction by oxycarbide, hydrocarbon, decompose nitrogen oxides Cheng Shui, nitrogen and carbon dioxide, experiment finds, ceria being used in carrier components is mainly in the denitrating catalyst of carborundum, doping vario-property can be carried out to silicon carbide, the denitration efficiency of catalyst can be improved to a certain extent, reduce the possibility of catalyst poisoning, the service life of extending catalyst.
Further, also containing the zirconium dioxide that parts by weight are 2 ~ 6 parts in carrier, zirconium dioxide has good heat endurance and chemical stability, excellent pyroconductivity, higher elevated temperature strength and toughness, good stability and corrosion resistance, and there is higher thermal coefficient of expansion, find in test, under hot conditions, Carboround doped with zirconium dioxide there will be Volume Changes, now carrier interiorly can produce a certain amount of micro-flaw, this micro-flaw is when material is subject to thermal stress effect, the effect absorbing crack propagation energy can be played, inhibit the expansion of crackle, improve the thermal shock resistance of material.Use ceria and zirconium dioxide to carry out surface modification to Carboround simultaneously, wherein ceria can be stablized the crystalline structure of zirconium dioxide, it is made to be transformed into Tetragonal and the Emission in Cubic of twin crystal structure by single monoclinic phase, this structure can keep original Tetragonal and Emission in Cubic at normal temperatures, and there is high-temperature stability, thus ensure that Carboround is under the prerequisite of high specific surface area, can adapt to the working environment of high temperature kiln denitrating flue gas.
In the above-described embodiments, active component can adopt the respective components in existing SCR denitration, such as, adopt parts by weight to be the tungstic acid of 4 ~ 13 parts and the vanadic anhydride of 1.5 ~ 2.5 parts; Simultaneously, in the preparation process of denitrating catalyst, also need to adopt suitable auxiliary material to realize the Homogeneous phase mixing of active component and carrier, its composition can adopt corresponding component in prior art, such as adopt parts by weight be 1 ~ 6 part glass fibre, 1 ~ 5 part paper pulp cotton, the stearic acid of 1 ~ 3 part, the polyethylene glycol oxide of 1 ~ 2 part.
Present invention also offers a kind of preparation method of SCR catalyst for denitrating flue gas, comprise two steps: be prepared by carrier; Catalyst preparing; It is characterized in that, described carrier preparation technology is, the carborundum of 65 ~ 85 parts is mixed to add in water heating kettle with nitric acid and is heated to impurities dissolves, silicon carbide powder is obtained after filtering post-drying, the ceria of 1 ~ 4 part and the zirconium dioxide of 2 ~ 6 parts is added in silicon carbide powder, add sodium borohydride, at silicon carbide cerium-carrying, zirconium simple substance, after washing, oven dry, roasting, obtain modified carbonize silicon carrier.The method mainly adopts sour hydro-thermal method to carry out surface oxidation to carborundum, then utilizes the strong reducing property of sodium borohydride that metal salt back is become metal simple-substance, is deposited on carrier surface, then through roasting, obtains modified carbonize silicon carrier; Its follow-up catalyst preparation step can adopt existing denitrating catalyst preparation technology, by being undertaken mixing by carrier, active component, auxiliary material, obtains final catalyst prod.
Further, method for preparing catalyst comprises following technique:
First, prepare active ingredient solution, ammonium metavanadate, MEA and water are mixed and made into ammonium metavanadate solution, ammonium tungstate, oxalic acid solution and water are mixed and made into ammonium tungstate solution;
Then, mixing roll is mixing, joins in mixing roll by modified carbonize silicon carrier, adds metavanadic acid ammonia solution, ammonium tungstate solution, glass fibre, paper pulp cotton, stearic acid, polyethylene glycol oxide, carry out mixing under low speed;
Finally, finished product prepare, mixing complete after through old, pre-extruded, extrude, primary drying, redrying, roasting, obtain SCR catalyst for denitrating flue gas product.
Further, in described finished product preparation technology, the old time is 18h ~ 32h; Pre-extruded pressure 1Mpa ~ 4Mpa; Extrusion pressure 2Mpa ~ 5Mpa, temperature 26 DEG C ~ 30 DEG C; The primary drying time is 8 days ~ 12 days; The redrying time is 1 day ~ 2 days; Sintering temperature 580 DEG C ~ 650 DEG C, the time is 20h ~ 40h.
Embodiment one
1, carrier preparation: 83.5g carborundum is mixed to add in water heating kettle with nitric acid be heated to impurities dissolves, silicon carbide powder is obtained after filtering post-drying, 1.0g ceria and 2.0g zirconium dioxide is added in silicon carbide powder, add sodium borohydride, at silicon carbide cerium-carrying, zirconium simple substance, after washing, oven dry, roasting, obtain modified carbonize silicon carrier;
2, catalyst preparing: first, prepares active ingredient solution, and 6.6g ammonium metavanadate, 6.6g MEA and 50g water are mixed and made into ammonium metavanadate solution, and 8.3g ammonium tungstate, 4.1g oxalic acid solution and 100g water are mixed and made into ammonium tungstate solution;
Then, mixing roll is mixing, joins in mixing roll by modified carbonize silicon carrier, adds metavanadic acid ammonia solution, ammonium tungstate solution under low speed, then adds 2.0g glass fibre, 2.0g paper pulp cotton, 2.0g stearic acid, 1.0g polyethylene glycol oxide, carries out mixing;
Finally, finished product prepare, mixing complete after old through carrying out 24h; By the moisture pre-extruded of 26% ~ 28% under 3Mpa; Under 4Mpa, 28 DEG C of conditions, the moisture of 26% ~ 28% is extruded again; Primary drying 11 days; Redrying 1 day; At 615 DEG C of roasting 33h, obtain denitrating catalyst product.
The product that said method is obtained carries out catalytic performance detection, and the content of each component in combined catalyst, carry out check analysis with catalytic performance, experimental result is in table 1.
Embodiment two, three, four, five
Method with reference to embodiment one carries out catalyst preparing, and carries out catalytic performance detection to the product made, and the content of each component in combined catalyst, carry out check analysis with catalytic performance, experimental result is in table 1.
The content of each component and catalytic performance in table 1 catalyst
Can show that this is high by the SCR catalyst for denitrating flue gas product catalytic efficiency that the method is obtained by above-mentioned experimental data, and still can maintain at 600 DEG C the catalytic efficiency being greater than 80%, more traditional Titanium series catalyst inactivation at 600 DEG C, beneficial effect is remarkable.
Claims (9)
1. a SCR catalyst for denitrating flue gas, described denitrating catalyst comprise carrier, active component and auxiliary material, three's parts by weight are:
65 ~ 95 parts, carrier
Active component 5.5 ~ 15.5 parts
Auxiliary material 4 ~ 16 parts
It is characterized in that, described carrier includes the carborundum that parts by weight are 65 ~ 85 parts.
2. a kind of SCR catalyst for denitrating flue gas as claimed in claim 1, is characterized in that, described carborundum is the nanometer silicon carbide of particle diameter in 10nm ~ 50nm scope.
3. a kind of SCR catalyst for denitrating flue gas as claimed in claim 1, is characterized in that, also containing the ceria that parts by weight are 1 ~ 4 part in described carrier.
4. a kind of SCR catalyst for denitrating flue gas as claimed in claim 1, is characterized in that, also containing the zirconium dioxide that parts by weight are 2 ~ 6 parts in described carrier.
5. a kind of SCR catalyst for denitrating flue gas according to any one of claim 1-4, is characterized in that, it is the tungstic acid of 4 ~ 13 parts and the vanadic anhydride of 1.5 ~ 2.5 parts that described active component comprises parts by weight.
6. a kind of SCR catalyst for denitrating flue gas according to any one of claim 1-4, is characterized in that, described auxiliary material comprise parts by weight be 1 ~ 6 part glass fibre, 1 ~ 5 part paper pulp cotton, the stearic acid of 1 ~ 3 part, the polyethylene glycol oxide of 1 ~ 2 part.
7. a preparation method for the SCR catalyst for denitrating flue gas according to any one of claim 1-6, comprises two steps: prepared by carrier; Catalyst preparing; It is characterized in that, described carrier preparation technology is, 65 ~ 85 parts of carborundum are mixed to add in water heating kettle with nitric acid and is heated to impurities dissolves, silicon carbide powder is obtained after filtering post-drying, the ceria of 1 ~ 4 part and the zirconium dioxide of 2 ~ 6 parts is added in silicon carbide powder, add sodium borohydride, at silicon carbide cerium-carrying, zirconium simple substance, after washing, oven dry, roasting, obtain modified carbonize silicon carrier.
8. preparation method as claimed in claim 7, it is characterized in that, described method for preparing catalyst comprises following technique:
First, prepare active ingredient solution, ammonium metavanadate, MEA and water are mixed and made into ammonium metavanadate solution, ammonium tungstate, oxalic acid solution and water are mixed and made into ammonium tungstate solution;
Then, mixing roll is mixing, joins in mixing roll by modified carbonize silicon carrier, adds metavanadic acid ammonia solution, ammonium tungstate solution, glass fibre, paper pulp cotton, stearic acid, polyethylene glycol oxide, carry out mixing under low speed;
Finally, finished product prepare, mixing complete after through old, pre-extruded, extrude, primary drying, redrying, roasting, obtain SCR catalyst for denitrating flue gas product.
9. preparation method as claimed in claim 8, it is characterized in that, in described finished product preparation technology, the old time is 18h ~ 32h; Pre-extruded pressure 1Mpa ~ 4Mpa; Extrusion pressure 2Mpa ~ 5Mpa, temperature 26 DEG C ~ 30 DEG C; The primary drying time is 8 days ~ 12 days; The redrying time is 1 day ~ 2 days; Sintering temperature 580 DEG C ~ 650 DEG C, the time is 20h ~ 40h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427343.0A CN105148961A (en) | 2015-07-21 | 2015-07-21 | SCR flue gas denitrification catalyst and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427343.0A CN105148961A (en) | 2015-07-21 | 2015-07-21 | SCR flue gas denitrification catalyst and preparation method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105148961A true CN105148961A (en) | 2015-12-16 |
Family
ID=54790175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510427343.0A Pending CN105148961A (en) | 2015-07-21 | 2015-07-21 | SCR flue gas denitrification catalyst and preparation method therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105148961A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854913A (en) * | 2016-04-07 | 2016-08-17 | 河南理工大学 | Two-dimension carbide loaded metal simple substance nano-powder, and preparation method and application thereof |
| CN110124708A (en) * | 2019-05-24 | 2019-08-16 | 中建材环保研究院（江苏）有限公司 | A kind of cement kiln flue gas SCR denitration catalyst and denitrating system |
| CN112675888A (en) * | 2020-12-25 | 2021-04-20 | 安徽元琛环保科技股份有限公司 | Preparation method of wear-resistant denitration catalyst for cement denitration and prepared denitration catalyst |
| CN113398919A (en) * | 2021-06-08 | 2021-09-17 | 安徽元琛环保科技股份有限公司 | Method for preparing coating type denitration catalyst from municipal sludge |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658546A (en) * | 1993-07-30 | 1997-08-19 | Nippon Shokubai Co., Ltd. | Denitration catalyst |
| CN101474570A (en) * | 2009-01-08 | 2009-07-08 | 中电投远达环保工程有限公司 | SCR granular catalyst substrate and preparation method thereof |
| CN101829560A (en) * | 2010-04-19 | 2010-09-15 | 瑞基科技发展有限公司 | Denitration catalyst |
| CN102240543A (en) * | 2011-05-05 | 2011-11-16 | 清华大学 | CeO2-ZrO2 based SCR (selective catalytic reduction) catalyst used for denitration and preparation thereof |
| CN103230793A (en) * | 2013-04-09 | 2013-08-07 | 安徽省元琛环保科技有限公司 | Power plant special-purposed novel high-efficiency nontoxic denitration catalyst and preparation method thereof |
| CN103263911A (en) * | 2013-05-14 | 2013-08-28 | 上海大学 | Preparation method of denitration catalyst with nanoscale ordered honeycomb structure |
| CN103816891A (en) * | 2014-03-04 | 2014-05-28 | 中国科学院生态环境研究中心 | Cerium-molybdenum-zirconium composite oxide catalyst, and preparation method and application thereof |
| CN104209117A (en) * | 2014-09-16 | 2014-12-17 | 东营信拓汽车消声器有限公司 | Preparation method of high-strength and antioxidant rare-earth-based smoke denitration catalyst |
| CN104549311A (en) * | 2014-12-30 | 2015-04-29 | 安徽省元琛环保科技有限公司 | Special non-toxic denitration catalyst for coal-fired power plant and preparation method of special non-toxic denitration catalyst |
| CN104741114A (en) * | 2015-04-09 | 2015-07-01 | 北京华电光大环保技术有限公司 | Flat-plate type high-temperature SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof |
-
2015
- 2015-07-21 CN CN201510427343.0A patent/CN105148961A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658546A (en) * | 1993-07-30 | 1997-08-19 | Nippon Shokubai Co., Ltd. | Denitration catalyst |
| CN101474570A (en) * | 2009-01-08 | 2009-07-08 | 中电投远达环保工程有限公司 | SCR granular catalyst substrate and preparation method thereof |
| CN101829560A (en) * | 2010-04-19 | 2010-09-15 | 瑞基科技发展有限公司 | Denitration catalyst |
| CN102240543A (en) * | 2011-05-05 | 2011-11-16 | 清华大学 | CeO2-ZrO2 based SCR (selective catalytic reduction) catalyst used for denitration and preparation thereof |
| CN103230793A (en) * | 2013-04-09 | 2013-08-07 | 安徽省元琛环保科技有限公司 | Power plant special-purposed novel high-efficiency nontoxic denitration catalyst and preparation method thereof |
| CN103263911A (en) * | 2013-05-14 | 2013-08-28 | 上海大学 | Preparation method of denitration catalyst with nanoscale ordered honeycomb structure |
| CN103816891A (en) * | 2014-03-04 | 2014-05-28 | 中国科学院生态环境研究中心 | Cerium-molybdenum-zirconium composite oxide catalyst, and preparation method and application thereof |
| CN104209117A (en) * | 2014-09-16 | 2014-12-17 | 东营信拓汽车消声器有限公司 | Preparation method of high-strength and antioxidant rare-earth-based smoke denitration catalyst |
| CN104549311A (en) * | 2014-12-30 | 2015-04-29 | 安徽省元琛环保科技有限公司 | Special non-toxic denitration catalyst for coal-fired power plant and preparation method of special non-toxic denitration catalyst |
| CN104741114A (en) * | 2015-04-09 | 2015-07-01 | 北京华电光大环保技术有限公司 | Flat-plate type high-temperature SCR (Selective Catalytic Reduction) denitration catalyst and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 曹蕃等: "Mn-Ce-Zr/γ-Al2O3催化剂低温选择性催化还原脱硝性能分析", 《中国电机工程学报》 * |
| 李远等: "锆掺杂对Ti-Ce-Ox复合氧化物NH3选择性催化还原NO的影响", 《硅酸盐学报》 * |
| 林涛等: "ZrO2-TiO2-CeO2的制备及其在NH3选择性催化还原NO中的应用", 《物理化学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105854913A (en) * | 2016-04-07 | 2016-08-17 | 河南理工大学 | Two-dimension carbide loaded metal simple substance nano-powder, and preparation method and application thereof |
| CN110124708A (en) * | 2019-05-24 | 2019-08-16 | 中建材环保研究院（江苏）有限公司 | A kind of cement kiln flue gas SCR denitration catalyst and denitrating system |
| CN112675888A (en) * | 2020-12-25 | 2021-04-20 | 安徽元琛环保科技股份有限公司 | Preparation method of wear-resistant denitration catalyst for cement denitration and prepared denitration catalyst |
| CN113398919A (en) * | 2021-06-08 | 2021-09-17 | 安徽元琛环保科技股份有限公司 | Method for preparing coating type denitration catalyst from municipal sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103252231B (en) | Denitration catalyst and preparation method thereof | |
| JP6595088B2 (en) | SCR catalyst for removing nitrogen oxides and method for producing the same | |
| CN101428215B (en) | Process for producing flue gas denitration catalyst and flue gas denitration catalyst produced with the process | |
| CN105964284A (en) | Honeycomb low temperature flue gas denitration catalyst and preparation method thereof | |
| CN103464194A (en) | SCR (Selective catalytic reduction) monolithic honeycombed catalyst for low-temperature flue gas de-nitrification and preparation method thereof | |
| WO2012162864A1 (en) | Surface deposition-type honeycomb catalyst for flue gas denitrification and preparation method thereof | |
| CN102909004B (en) | Compounded denitration catalyst, as well as preparation method and application thereof | |
| CN103191718A (en) | Preparation method of low-cost honeycomb denitration catalyst | |
| CN105148961A (en) | SCR flue gas denitrification catalyst and preparation method therefor | |
| CN108067291B (en) | A kind of preparation method of honeycomb rare earth based denitration catalyst | |
| KR102090726B1 (en) | Metal Structure based NOx Removal Catalyst for Selective Catalyst Reduction using Coating Slurry and Method for Manufacturing Same | |
| CN105797714B (en) | A kind of manganese titanium composite oxide low-temperature denitration catalyst and preparation method thereof that holmium is modified | |
| CN112657552B (en) | Vanadium phosphorus oxygen low-temperature denitration catalyst and molding preparation method thereof | |
| CN104741113A (en) | Low-cost denitration catalyst and preparation method thereof | |
| CN106000455A (en) | Environment-friendly SCR (Selective Catalytic Reduction) catalyst and preparation method thereof | |
| CN111001430A (en) | Adsorption/catalysis material for waste gas treatment and preparation method thereof | |
| CN103861581A (en) | Perovskite-type substance La<1-x>Sr<x>CrO<3>, heat-engine plant denitration composite catalyst, and preparation methods of perovskite-type substance La<1-x>Sr<x>CrO<3> and heat-engine plant denitration composite catalyst | |
| CN111036229A (en) | Low-temperature V2O5-WO3/TiO2NH3Selective reduction catalytic NO catalyst and preparation method thereof | |
| CN106732537A (en) | It is a kind of to add attapulgite modified low-temperature SCR catalyst and preparation method thereof | |
| CN103769083A (en) | Efficient denitration composite oxide catalyst as well as preparation method and application thereof | |
| CN102728346A (en) | MnO2-TiO2 carbon nanotube-porous inorganic ceramic membrane low-temperature catalytic denitrification self-cleaning material and its preparation method | |
| CN110694612A (en) | Rare earth-based low-vanadium medium-low temperature flue gas denitration catalyst and preparation method thereof | |
| CN104923213A (en) | Nontoxic rare-earth denitration catalyst and preparation method and application thereof | |
| CN104437586A (en) | Foam type low-temperature flue gas denitration catalyst and preparation method thereof | |
| CN105126927A (en) | Catalyst support for preparing a catalyst for removal of nitrogen oxides and method for preparing thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 230000, Anhui, Hefei New Station District North Community on the west side of the White Road Applicant after: ANHUI YUANCHEN ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. Address before: 230000, Anhui, Hefei New Station District North Community on the west side of the White Road Applicant before: Anhui YuanChen Environmental Protention Science and Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |