CN102886266A - Integrally-extruded honeycomb catalyst for selective catalytic reduction (SCR) smoke denitration and preparation process of catalyst - Google Patents
Integrally-extruded honeycomb catalyst for selective catalytic reduction (SCR) smoke denitration and preparation process of catalyst Download PDFInfo
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- CN102886266A CN102886266A CN2012103560881A CN201210356088A CN102886266A CN 102886266 A CN102886266 A CN 102886266A CN 2012103560881 A CN2012103560881 A CN 2012103560881A CN 201210356088 A CN201210356088 A CN 201210356088A CN 102886266 A CN102886266 A CN 102886266A
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Abstract
The invention discloses an integrally-extruded honeycomb catalyst for selective catalytic reduction (SCR) smoke denitration. The catalyst consists of the following active ingredients: 65 to 80 percent of titanium dioxide, 5 to 15 percent of ferrous sulfate, 5 to 15 percent of tungsten trioxide, 1 to 4.5 percent of vanadium pentoxide and 0.05 to 0.5 percent of lanthanum nitrate. The catalyst has the advantages of high mechanical strength, wear resistance, long service life and low cost, and the catalyst is easy to form; particularly FeSO4 is added, so that a good catalyzing effect is achieved, and a synergistic effect of FeSO4 and Ti-V-W active ingredients is also achieved; because a La element is added, structural phase transition from an anatase to a rutile is greatly restrained, a phase transition temperature is obviously increased, the catalyst can be calcined at a temperature of 800 DEG C, and the catalyst of an anatase ontology is obtained; and moreover, the catalyst has a good denitration effect, is wide in applicable temperature range, and can help to achieve a desorption efficiency of 60 to 90 percent at the temperature of between 180 DEG C and 450 DEG C.
Description
Technical field
The present invention relates to a kind of air contaminant treatment catalyst, specifically a kind of monolithic extruded honeycomb catalyst and preparation technology thereof for the SCR denitrating flue gas belong to the air contaminant treatment catalyst field.
Background technology
China is maximum in the world coal production state and country of consumption, and coal still accounts for significant proportion in the energy resource structure of China, is the most important reason that causes that China's nitrogen oxides pollution is on the rise take coal as main energy consumption structure.Nitrogen oxide (NOx) pollutes day by day serious, and the acid rain and the environmental problems such as photochemical fog, greenhouse effects that cause therefrom are day by day serious.Denitrating flue gas has become the emphasis problem that country " 12 " needs to be resolved hurrily.Coal accounts for more than 75% in China's total energy consumption for many years, and coal will account for about 70% of total energy consumption in the future 10 years, within quite long from now on period, take coal as main energy supply with consume general layout and can not change.The annual NOx discharge capacity of China is up to 2,200 ten thousand tons, and surpassing the U.S. becomes the large discharging of the first in the world state, and the loss that cause because of acid rain every year is above 3,000 hundred million yuan.In the face of severe atmospheric environment form, China had once carried out twice revision to " thermal power plant's pollutant emission standard " of formulation in 1991, and carried out 450mg/m since 2004
3The NOx discharge standard of (Vdaf〉20%) begins to impose the NOx charges for disposing pollutants of 0.63 yuan/kg.Simultaneously, the secondary suggestion of coal-burning power plant's pollutant emission standard of promulgating in country is solicited in the original text, and it is 100mg/m that the discharging of coal-fired boiler NOx has been had the highest permission concentration of emission of strict regulation: NOx
3Therefore, no matter from environment or law angle, must greatly develop gas denitrifying technology.
In numerous denitration technologies, SCR (SCR) method denitration efficiency is the highest, and technology is also comparatively ripe.The SCR denitration technology have denitration efficiency height, no coupling product, device simple, be convenient to the advantage such as maintenance.In the SCR system, the status of catalyst holds the balance, and its catalytic performance directly has influence on the denitration effect of SCR system; The replacing of catalyst and the consumption of reducing agent is the main source used of SCR systematic running cost especially.Simultaneously, along with the gradually intensification of people's environmental consciousness, the requirement of catalyst is also improved constantly: will further increase its denitration efficiency on the one hand, as regulating catalyst structure, install current equalizer etc. additional; On the other hand, then require more strictly to control its environmental protection standard, such as the discharge capacity that reduces Sulphur Dioxide rate, mercury etc.
Domestic Catalyst is still the bottleneck of restriction SCR industrialized development.Gas denitrifying technology core catalyst initial cost accounts for 40%～60% of denitrating system gross investment.Existing more than 300 cover SCR devices are in operation now in Japan, and the U.S. is also in the research and extension of carrying out the SCR technology.This technology has obtained fairly large application in industry, but technology also is in and maintains secrecy, and does not divulge to developing country.Therefore, the at present production domesticization of catalyst mainly is " processing of investor's raw materials " formula production domesticization that introduction forming production device and imported raw material carry out.
Multinomial about the patent 1500 of SCR catalyst both at home and abroad, majority is the applications such as Japan and the United States, Europe, and the SCR technical patent about 10 of all kinds of systems of China is multinomial.China's flue gas desulfurization technique is mainly by introduction of foreign technology, and introduce technology exist the utilization expense high, be difficult to grasp the outstanding difficult problems such as core technology, upgradability be poor, particularly catalyst system therefor is expensive, and unrealized production domesticization is seriously restricting carrying out of China NOx improvement.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, and the catalytic activity of this catalyst is high, and denitration efficiency is high, and long service life, environmental protection can not cause secondary pollution; The present invention provides this catalyst science reasonable, simple preparation method simultaneously.
Technical scheme of the present invention is:
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, the active component of described catalyst is grouped into by the one-tenth of following weight fraction:
Titanium dioxide 65～80%, ferrous sulfate 5～15%, tungstic acid 5～15%, vanadic anhydride 1～4.5%, lanthanum nitrate 0.05～0.5%.
Preferably, the active component of described catalyst is grouped into by the one-tenth of following weight fraction:
Titanium dioxide 75%, tungstic acid 11%, vanadic anhydride 3.5%, ferrous sulfate 10%, lanthanum nitrate 0.5%.
Further, described catalyst also comprises processing aid, and described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percetage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 0～10%, methyl hydroxyl two basic celluloses 0.1～1%, ceramic fibre 1～10%, glycerine 1～5%, water 25～35%.
Preferably, the component of the weight fraction of each processing aid is:
Sepiolite 9%, methyl hydroxyl two basic celluloses 0.8%, ceramic fibre 9%, glycerine 4%, water 25%.
Further, described titanium dioxide is nano-anatase as carrier.
Described tungstic acid, vanadic anhydride, ferrous sulfate are active component; Described lanthanum nitrate is the doping vario-property agent; Described sepiolite is agglomerating dose; Described methyl hydroxyl two basic celluloses are binding agent; Described glycerine is extrusion aid.
A kind of preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) weighing: according to each component of aforementioned proportion weighing;
(2) be dry mixed: with TiO
2, FeSO
4, WO
3, V
2O
5, sepiolite, ceramic fibre prepare according to the above ratio, mix;
(3) wet mixing and pinch stranding: with La (NO
3)
3, glycerine, methyl hydroxyl two basic cellulose dissolutions is in water, pinches to rub with the hands and mixes with mix the powder that obtains through step (2) again, obtains wet feed;
(4) wet feed that step (3) is obtained forms the integral honeycomb shape by the mould extrusion modling;
(5) the integral honeycomb catalyst base substrate that step (4) is obtained carries out even drying;
(6) the dried integral honeycomb catalyst of step (5) base substrate is carried out sintering, obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas.
Further, described to be dry mixed the time be 10～30min to step (2);
Further, the described drying condition of step (5) is under 30～150 ℃, evenly dry 24～48 hours;
Further, the described sintering condition of step (6) is sintering 12～24 hours under 400～800 ℃ of temperature.
The invention has the advantages that: shaping of catalyst of the present invention is easy, and mechanical strength is high, and is wear-resistant, long service life, and the cost of catalyst is low, especially FeSO
4Adding, not only play good catalytic effect, also with the Ti-V-W active component synergy is arranged, and the adding of La element has suppressed the structural phase transition of anatase to Rutile Type greatly, and phase transition temperature is significantly improved, can 800 ℃ of lower calcinings, obtain the catalyst of Detitanium-ore-type body.Simultaneously, the denitration effect of catalyst is good, and applicable temperature range is wide, and 60～90% removal effect is all arranged under 180～450 ℃.
The specific embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
Except as otherwise noted, the percentage that adopts among the present invention is percetage by weight.
Embodiment 1
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, described catalyst comprises active component and processing aid, described active component comprises the component of following weight fraction:
Titanium dioxide (TiO
2) 70%, ferrous sulfate (FeSO
4) 15%, tungstic acid (WO
3) 10%, vanadic anhydride (V
2O
5) 4.5%, lanthanum nitrate (La (NO
3)
3) 0.5%;
Described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percentage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 10%, methyl hydroxyl two basic celluloses 0.1%, ceramic fibre 8%, glycerine 4%, water 25%.
The preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) is dry mixed: the nano-anatase TiO that gets 700g
2Powder, 150gFeSO
4, 100gWO
3, 45gV
2O
5, add on this basis processing aid, namely 70g sepiolite, 56g ceramic fibre place dry-powder mixer to mix various solids together.The time of being dry mixed is 20min.
(2) wet mixing and pinch stranding: with 5g La (NO
3)
3, 28mL glycerine, 7g methyl hydroxyl two basic cellulose dissolutions is in 175mL water, again with mix the powder that obtains through step (1) and pinch stranding, obtain wet feed.
(3) will pinch the even compact wet feed that obtains and enter extruder, by the sub-extrusion modling of certain moduli, obtain monolithic extruded honeycomb shape catalyst base substrate.
(4) monolithic extruded honeycomb catalyst base substrate is placed baking oven, even drying is 20 hours under 30 ℃ of temperature, slowly is warmed up to 150 ℃, continues dry 12 hours.
(5) dried monolithic extruded honeycomb catalyst is changed in the muffle furnace, sintering can obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas in 20 hours under 750 ℃ of temperature.
Result: catalyst activity property testing
The catalyst that obtains is carried out laboratory catalytic activity simulated experiment, 300 ℃ of control reaction temperatures, air speed 4000h
-1, NH
3/ NO mol ratio is 1, and the conversion ratio that records denitrating flue gas under this condition is 72.4%.
Embodiment 2
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, described catalyst comprises active component and processing aid, described active component comprises the component of following weight fraction:
Titanium dioxide (TiO
2) 75%, ferrous sulfate (FeSO
4) 10%, tungstic acid (WO
3) 11%, vanadic anhydride (V
2O
5) 3.5%, lanthanum nitrate (La (NO
3)
3) 0.5%;
Described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percentage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 9.3%, methyl hydroxyl two basic celluloses 0.8%, ceramic fibre 10%, glycerine 5%, water 30%.
The preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) is dry mixed: the nano-anatase TiO that gets 750g
2Powder, 100gFeSO
4, 110gWO
3, 35gV
2O
5, add on this basis processing aid, namely 70g sepiolite, 75g ceramic fibre place dry-powder mixer to mix various solids together.The time of being dry mixed is 20min.
(2) wet mixing and pinch stranding: with 5g La (NO
3)
3, 37.5mL glycerine, 6g methyl hydroxyl two basic cellulose dissolutions is in 225mL water, again with mix the powder that obtains through step (1) and pinch stranding, obtain wet feed.
(3) will pinch the even compact wet feed that obtains and enter extruder, by the sub-extrusion modling of certain moduli, obtain monolithic extruded honeycomb shape catalyst base substrate.。
(4) monolithic extruded honeycomb catalyst base substrate is placed baking oven, even drying is 16 hours under 50 ℃ of temperature, slowly is warmed up to 150 ℃, continues dry 10 hours.
(5) dried monolithic extruded honeycomb catalyst is changed in the muffle furnace, sintering can obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas in 21 hours under 750 ℃ of temperature.
Result: catalyst activity property testing
Test condition is with embodiment 1, and the conversion ratio that records denitrating flue gas under this condition is 78.9%.
Embodiment 3
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, described catalyst comprises active component and processing aid, described active component comprises the component of following weight fraction:
Titanium dioxide (TiO
2) 70%, ferrous sulfate (FeSO
4) 13%, tungstic acid (WO
3) 13%, vanadic anhydride (V
2O
5) 3.6%, lanthanum nitrate (La (NO
3)
3) 0.4%;
Described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percentage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 8%, methyl hydroxyl two basic celluloses 1%, ceramic fibre 10%, glycerine 4%, water 30%.
The preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) is dry mixed: the nano-anatase TiO that gets 700g
2Powder, 130gFeSO
4, 130gWO
3, 36gV
2O
5, add on this basis processing aid, namely 56g sepiolite, 70g ceramic fibre place dry-powder mixer to mix various solids together.The time of being dry mixed is 20min.
(2) wet mixing and pinch stranding: with 4g La (NO
3)
3, 28mL glycerine, 7g methyl hydroxyl two basic cellulose dissolutions is in 210mL water, again with mix the powder that obtains through step (1) and pinch stranding, obtain wet feed.
(3) will pinch the even compact wet feed that obtains and enter extruder, by the sub-extrusion modling of certain moduli, obtain monolithic extruded honeycomb shape catalyst base substrate.。
(4) monolithic extruded honeycomb catalyst base substrate is placed baking oven, even drying is 14 hours under 50 ℃ of temperature, slowly is warmed up to 150 ℃, continues dry 12 hours.
(5) dried monolithic extruded honeycomb catalyst is changed in the muffle furnace, sintering can obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas in 20 hours under 750 ℃ of temperature.
Result: catalyst activity property testing
Test condition is with embodiment 1, and the conversion ratio that records denitrating flue gas under this condition is 81.5%.
Embodiment 4
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, described catalyst comprises active component and processing aid, described active component comprises the component of following weight fraction:
Titanium dioxide (TiO
2) 80%, ferrous sulfate (FeSO
4) 8%, tungstic acid (WO
3) 8%, vanadic anhydride (V
2O
5) 3.7%, lanthanum nitrate (La (NO
3)
3) 0.3%;
Described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percentage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 8%, methyl hydroxyl two basic celluloses 0.8%, ceramic fibre 10%, glycerine 4%, water 30%.
The preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) is dry mixed: the nano-anatase TiO that gets 800g
2Powder, 80gFeSO
4, 80gWO
3, 37gV
2O
5, add on this basis processing aid, namely 64g sepiolite, 80g ceramic fibre place dry-powder mixer to mix various solids together.The time of being dry mixed is 20min.
(2) wet mixing and pinch stranding: with 3g La (NO
3)
3, 32mL glycerine, 6.4g methyl hydroxyl two basic cellulose dissolutions is in 240mL water, again with mix the powder that obtains through step (1) and pinch stranding, obtain wet feed.
(3) will pinch the even compact wet feed that obtains and enter extruder, by the sub-extrusion modling of certain moduli, obtain monolithic extruded honeycomb shape catalyst base substrate.。
(4) monolithic extruded honeycomb catalyst base substrate is placed baking oven, even drying is 16 hours under 30 ℃ of temperature, slowly is warmed up to 150 ℃, continues dry 12 hours.
(5) dried monolithic extruded honeycomb catalyst is changed in the muffle furnace, sintering can obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas in 22 hours under 750 ℃ of temperature.
Result: catalyst activity property testing
Test condition is with embodiment 1, and the conversion ratio that records denitrating flue gas under this condition is 85.2%.
Embodiment 5
A kind of monolithic extruded honeycomb catalyst for the SCR denitrating flue gas, described catalyst comprises active component and processing aid, described active component comprises the component of following weight fraction:
Titanium dioxide (TiO
2) 75%, ferrous sulfate (FeSO
4) 12%, tungstic acid (WO
3) 10%, vanadic anhydride (V
2O
5) 2.6%, lanthanum nitrate (La (NO
3)
3) 0.4%;
Described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percentage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 10%, methyl hydroxyl two basic celluloses 1%, ceramic fibre 8%, glycerine 4%, water 30%.
The preparation method of above-mentioned monolithic extruded honeycomb catalyst for the SCR denitrating flue gas may further comprise the steps:
(1) is dry mixed: the nano-anatase TiO that gets 750g
2Powder, 120gFeSO
4, 100gWO
3, 26gV
2O
5, add on this basis processing aid, namely 75g sepiolite, 60g ceramic fibre place dry-powder mixer to mix various solids together.The time of being dry mixed is 20min.
(2) wet mixing and pinch stranding: with 4g La (NO
3)
3, 30mL glycerine, 7.5g methyl hydroxyl two basic cellulose dissolutions is in 225mL water, again with mix the powder that obtains through step (1) and pinch stranding, obtain wet feed.
(3) will pinch the even compact wet feed that obtains and enter extruder, by the sub-extrusion modling of certain moduli, obtain monolithic extruded honeycomb shape catalyst base substrate.。
(4) monolithic extruded honeycomb catalyst base substrate is placed baking oven, even drying is 16 hours under 30 ℃ of temperature, slowly is warmed up to 150 ℃, continues dry 12 hours.
(5) dried monolithic extruded honeycomb catalyst is changed in the muffle furnace, sintering can obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas in 24 hours under 750 ℃ of temperature.
Result: catalyst activity property testing
Test condition is with embodiment 1, and the conversion ratio that records denitrating flue gas under this condition is 87.8%.
Among each embodiment of the present invention, used chemical industry material is used material in the production of this area, all can obtain from market, and can not exert an influence for the production result; The various device that adopts among the present invention is the conventional equipment that uses in the production technology of this area, and operation of each equipment, parameter etc. all carry out according to routine operation, there is no special feature.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. monolithic extruded honeycomb catalyst that is used for the SCR denitrating flue gas is characterized in that the active component of described catalyst is grouped into by the one-tenth of following weight fraction:
Titanium dioxide 65～80%, ferrous sulfate 5～15%, tungstic acid 5～15%, vanadic anhydride 1～4.5%, lanthanum nitrate 0.05～0.5%.
2. catalyst according to claim 1, it is characterized in that: the active component of described catalyst is grouped into by the one-tenth of following weight fraction:
Titanium dioxide 75%, tungstic acid 11%, vanadic anhydride 3.5%, ferrous sulfate 10%, lanthanum nitrate 0.5%.
3. catalyst according to claim 1 and 2, it is characterized in that, described catalyst also comprises processing aid, described processing aid is comprised of sepiolite, methyl hydroxyl two basic celluloses, ceramic fibre, G ﹠ W, and the percetage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 0～10%, methyl hydroxyl two basic celluloses 0.1～1%, ceramic fibre 1～10%, glycerine 1～5%, water 25～35%.
4. catalyst according to claim 3 is characterized in that, the percetage by weight that each component of described processing aid accounts for titanium dioxide is respectively:
Sepiolite 9%, methyl hydroxyl two basic celluloses 0.8%, ceramic fibre 9%, glycerine 4%, water 25%.
5. the preparation method of the described monolithic extruded honeycomb catalyst for the SCR denitrating flue gas of a claim 1-4 any one is characterized in that, may further comprise the steps:
(1) weighing: according to each component of aforementioned proportion weighing;
(2) be dry mixed: with TiO
2, FeSO
4, WO
3, V
2O
5, sepiolite, ceramic fibre prepare according to the above ratio, mix;
(3) wet mixing and pinch stranding: with La (NO
3)
3, glycerine, methyl hydroxyl two basic cellulose dissolutions is in water, pinches to rub with the hands and mixes with mix the powder that obtains through step (2) again, obtains wet feed;
(4) wet feed that step (3) is obtained forms the integral honeycomb shape by the mould extrusion modling;
(5) the integral honeycomb catalyst base substrate that step (4) is obtained carries out even drying;
(6) the dried integral honeycomb catalyst of step (5) base substrate is carried out sintering, obtain the monolithic extruded honeycomb catalyst of final SCR denitrating flue gas.
6. preparation method according to claim 5 is characterized in that:
The time that is dry mixed of described step (2) is 10～30min.
7. preparation method according to claim 5 is characterized in that:
The drying condition of described step (5) is under 30～150 ℃, evenly dry 24～48 hours.
8. preparation method according to claim 5 is characterized in that:
The sintering condition of described step (6) is sintering 12～24 hours under 400～800 ℃ of temperature.
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| CN103263914A (en) * | 2013-05-03 | 2013-08-28 | 北京工业大学 | Honeycomb-shaped SCR denitration catalysis material for cement kiln and preparation method thereof |
| CN103816909A (en) * | 2013-12-11 | 2014-05-28 | 安徽省元琛环保科技有限公司 | Low-temperature denitrification catalyst and preparation method thereof |
| CN105618029A (en) * | 2015-12-30 | 2016-06-01 | 华电青岛环保技术有限公司 | SCR (Selective Catalytic Reduction) denitration catalyst coated with rare earth and preparation method thereof |
| CN106268786A (en) * | 2016-08-05 | 2017-01-04 | 安徽元琛环保科技股份有限公司 | A kind of low-temperature denitration catalyst and preparation method thereof |
| CN107469809A (en) * | 2017-09-27 | 2017-12-15 | 安徽元琛环保科技股份有限公司 | A kind of high temperature denitrating catalyst composition and preparation method thereof |
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| CN110052264A (en) * | 2019-05-21 | 2019-07-26 | 中国石油化工股份有限公司 | A kind of preparation method for SCR denitration under cryogenic conditions |
| CN113877617A (en) * | 2021-09-16 | 2022-01-04 | 安徽元琛环保科技股份有限公司 | Ultra-high temperature catalyst based on modification of hexagonal boron nitride and preparation method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103263914A (en) * | 2013-05-03 | 2013-08-28 | 北京工业大学 | Honeycomb-shaped SCR denitration catalysis material for cement kiln and preparation method thereof |
| CN103816909A (en) * | 2013-12-11 | 2014-05-28 | 安徽省元琛环保科技有限公司 | Low-temperature denitrification catalyst and preparation method thereof |
| CN105618029A (en) * | 2015-12-30 | 2016-06-01 | 华电青岛环保技术有限公司 | SCR (Selective Catalytic Reduction) denitration catalyst coated with rare earth and preparation method thereof |
| CN106268786A (en) * | 2016-08-05 | 2017-01-04 | 安徽元琛环保科技股份有限公司 | A kind of low-temperature denitration catalyst and preparation method thereof |
| CN107469809A (en) * | 2017-09-27 | 2017-12-15 | 安徽元琛环保科技股份有限公司 | A kind of high temperature denitrating catalyst composition and preparation method thereof |
| CN108993613A (en) * | 2018-08-15 | 2018-12-14 | 山东鑫澳节能环保科技有限公司 | A kind of composite ceramic fiber structure and its preparation method and application |
| CN110052264A (en) * | 2019-05-21 | 2019-07-26 | 中国石油化工股份有限公司 | A kind of preparation method for SCR denitration under cryogenic conditions |
| CN110052264B (en) * | 2019-05-21 | 2022-06-21 | 中国石油化工股份有限公司 | Preparation method of SCR denitration catalyst used under low temperature condition |
| CN113877617A (en) * | 2021-09-16 | 2022-01-04 | 安徽元琛环保科技股份有限公司 | Ultra-high temperature catalyst based on modification of hexagonal boron nitride and preparation method |
| CN113877617B (en) * | 2021-09-16 | 2024-01-30 | 安徽元琛环保科技股份有限公司 | Ultrahigh-temperature catalyst based on hexagonal boron nitride modification and preparation method thereof |
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