CN106824298A - A kind of honeycomb type thin-walled SCR denitration peculiar to vessel and preparation method thereof - Google Patents
A kind of honeycomb type thin-walled SCR denitration peculiar to vessel and preparation method thereof Download PDFInfo
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- CN106824298A CN106824298A CN201710070044.5A CN201710070044A CN106824298A CN 106824298 A CN106824298 A CN 106824298A CN 201710070044 A CN201710070044 A CN 201710070044A CN 106824298 A CN106824298 A CN 106824298A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 33
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000002708 enhancing effect Effects 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 4
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 229940100573 methylpropanediol Drugs 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000001294 propane Substances 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical class CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 235000013772 propylene glycol Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/617—500-1000 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/618—Surface area more than 1000 m2/g
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a kind of honeycomb type thin-walled SCR denitration peculiar to vessel and preparation method thereof.The catalyst is using short glass fiber as Strength enhancing materials, and add novel dispersant and lubricant, kneaded with carrier and remaining auxiliary material, through thin-walled mould extrusion molding, unilateral hole count 30 ~ 60, interior wall thickness are finally given for 0.2 ~ 0.7mm, the thin-walled SCR denitration peculiar to vessel of the ㎡ of specific surface area 600/more than m3, more than 80% efficiency of ship denitration requirement can be met.
Description
Technical field
The present invention relates to the SCR denitration in marine diesel tail gas denitration field, and in particular to a kind of honeycomb type is thin
Wall SCR denitration peculiar to vessel and preparation method thereof.
Background technology
A kind of method of denitration efficiently, ripe of selective catalytic reduction (SCR).Common honeycomb type commercialization SCR denitration
Catalyst is that main component is V2O5- WO3/TiO2.According to different forming techniques and equipment, the commercialization that can obtain different size is urged
Agent.
As market demand industry is constantly expanded, the requirement to out of stock catalyst performance is gradually lifted, particularly unit bodies
Out of stock efficiency in product.For example, with the raising of environmental requirement, shipbuilding industry starts using the out of stock catalyst of SCR for out of stock.
Because high-power low-speed diesel capacity is big, NOx concentration is high, traditional SCR catalyst cannot meet boat diesel engine flue gas
Denitration requirement, it is particularly poor to caused smoke temperature change responding ability in the case of startup and load variations；Additionally, ship
Extremely compact, narrow space is laid out, it is difficult to reserved enough space arrangement SCR systems.Accordingly, there exist out of stock efficiency it is low and transformation
The difficulties such as insufficient space.
There is document report, thin-walled property is carried out to catalyst and improves the specific surface area that can not only increase catalyst, moreover it is possible to make work
Property component evenly be distributed in catalyst surface, allow catalytic reaction thing to be fully contacted, improve per volume of catalyst denitration
Efficiency.However, country ship denitration field is not yet related to thin-walled property at present.
It is relatively low to solve the problems, such as per volume of catalyst efficiency, fully improve the problem that new denitration market is present, having must
The denitration performance of catalyst is improved by means such as thin-walled properties, and by the Technique Popularizing to commercial catalyst production application.
The content of the invention
The present invention is applied to the problem that new denitration market is present for commercial catalyst, in the life of former honeycomb type SCR catalyst
A kind of thin-walled simple and easy to apply SCR catalyst production technology peculiar to vessel is provided on the basis of production. art.Specifically, the catalyst
Using brand-new dispersant, lubricant as auxiliary material, while the length and addition of glass fibre are adjusted, finally with thin-walled
Mould extrusion molding.
To achieve the above object, the present invention provides following technical scheme：
A kind of honeycomb type thin-walled SCR denitration peculiar to vessel, its preparation method is：
（1）By (5-50):(500-800) mass ratio is to addition active component presoma, titanium dioxide in kneading machine, then mixes at a high speed
Close；
（2）In mass ratio (20-80):(2-8):(2-30):(2-50):(2-20): (10-225):(200-600) is by short glass
After fiber, HPMC, dispersant, lubricant, polyethylene glycol oxide, ammoniacal liquor, water are added in kneading machine, knead at a high speed
Form pug；
（3）After the old 6-36h of pug after filtering and impurity removing, then old 6-24h with thin-walled mould extrude, through drying, calcining, cutting,
The operations such as packaging obtain catalyst module.
Used as Strength enhancing materials, its length is 0 ~ 10mm, 1-50 μm of filament diameter to described short glass fiber；
Preferably, the short glass fiber length is 0 ~ 5mm；
Preferably, the short glass fiber filament diameter is 1-10 μm.
Using short glass fiber, the screen pack of densification can be passed through when extrusion is filtered without being trapped within screen pack
On, while being more uniformly dispersed in pug, improve the mechanical strength of catalyst.
Described dispersant be methyl anyl alcohol, Sodium Polyacrylate in one or two；
Preferably, the Sodium Polyacrylate molecular weight is 1000 ~ 10000.
The addition of dispersant, substantially increases the mixing uniformity of each raw materials for production, in particular improves glass fibre
Dispersiveness, improves the compression strength of finished catalyst indirectly.
Described lubricant is one or more in 1,2-propane diols, pentaerythrite, methyl propanediol.
Adding lubricant, the pug of blended formation has more preferable plasticity in extrusion molding, is conducive to by thin-walled
Punch die extrusion molding high.
The unilateral hole count of catalyst for 30 ~ 60 the out of stock catalyst of honeycomb type SCR, catalytic interior wall thickness be 0.2 ~
0.7mm, specific surface area of catalyst is more than 600 m2/m3。
There is bigger catalytic reaction surface to accumulate in thin-walled catalyst unit volume peculiar to vessel of the present invention, directly lifted
Catalytic efficiency.Conventional scr denitrating catalyst surface, active component is in stacking states, not only causes active component to waste, and
The gas adsorption processes in catalyst microcellular structure are have impact on, catalytic reaction efficiency is reduced.Therefore, activity in thin-walled catalyst
Component can be more equally distributed in catalyst surface, and catalytic efficiency is lifted indirectly.
In a word, the present invention provide inwall for 0.2 ~ 0.7mm thin-walled property catalyst unit volume peculiar to vessel under be capable of achieving more
Denitration efficiency high.
Beneficial effects of the present invention are as follows：
1. cost-effective：Catalytic interior wall thickness of the present invention is relatively thin, and raw material needed for unit of product are less, directly drops
Low Catalyst Production cost；
2. specific surface area is big, catalysis activity is high：Specific surface area of catalyst of the present invention is more than 600m2/m3, up to
1200m2/m3, per volume of catalyst reaction surface area is more than 2 times of conventional products, and denitration efficiency has a distinct increment.
Brief description of the drawings
Fig. 1 is thin-walled SCR denitration denitration efficiency curve peculiar to vessel.
Specific embodiment
Below by way of specific embodiment, the present invention is described in further detail, but this should not be interpreted as into the present invention
Scope be only limitted to following example.In the case where above method thought of the present invention is not departed from, according to ordinary skill
Various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Present embodiment discloses a kind of honeycomb type thin-walled SCR denitration peculiar to vessel, carry out according to the following steps.Before active component
Drive body, titanium dioxide and press 40：680 mass ratioes are well mixed, then by 3mm, 10 μm of glass fibres of diameter, HPMC, poly-
PAA, polyethylene glycol oxide, 1,2-propane diols, ammoniacal liquor, water etc. in mass ratio 45：5：15：10：7：105：480 in 500rpm
Lower mixing, it is the pug that 30%, pH is 9 to ultimately form water content；Filtered after pug old 24, then 40 holes are used after old 12h
0.6mm wall thickness mould is extruded, and obtaining 40 hole 0.6mm wall thickness SCR denitration peculiar to vessel through operations such as drying, calcining, cutting, packagings is catalyzed
Agent finished product.Specific surface area of finished products is 882 m2/m3。
Embodiment 2
Present embodiment discloses a kind of honeycomb type thin-walled SCR denitration peculiar to vessel, carry out according to the following steps.Before active component
Drive body, titanium dioxide and press 50：660 mass ratioes are well mixed, then by 2mm, 6 μm of glass fibres of diameter, HPMC, poly- third
Olefin(e) acid sodium, polyethylene glycol oxide, 1,2-propane diols, ammoniacal liquor, water etc. in mass ratio 55：4：12：8：10：100：500 at 500 rpm
Mixing, it is the pug that 29%, pH is 8.4 to ultimately form water content；Filtered after pug old 24, then 50 holes are used after old 12h
0.5mm wall thickness mould is extruded, and obtaining 50 hole 0.5mm wall thickness SCR denitration peculiar to vessel through operations such as drying, calcining, cutting, packagings is catalyzed
Agent finished product.Specific surface area of finished products is 1088 m2/m3。
Two kinds of finished catalysts in embodiment carry out stand denitration performance detection, and testing conditions are：NO=NH3=
1500ppm, O2=5.5%, SO2=250ppm, H2O=5%, GHSV=7000h-1, as a result as shown in Figure 1.
Claims (7)
1. a kind of honeycomb type thin-walled SCR denitration peculiar to vessel, it is characterised in that its preparation method is：
（1）By (5-50):(500-800) mass ratio is to addition active component presoma, titanium dioxide in kneading machine, then mixes at a high speed
Close；
（2）In mass ratio (20-80):(2-8):(2-30):(2-50):(2-20): (10-225):(200-600) is by short glass
After fiber, HPMC, dispersant, lubricant, polyethylene glycol oxide, ammoniacal liquor, water are added in kneading machine, knead at a high speed
Form pug；
（3）After the old 6-36h of pug after filtering and impurity removing, then old 6-24h with thin-walled mould extrude, through drying, calcining, cutting,
The operations such as packaging obtain catalyst module.
2. a kind of preparation method of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1, its feature exists
In used as Strength enhancing materials, its length is 0 ~ 10mm, 1-50 μm of filament diameter to described short glass fiber；
Preferably, the short glass fiber length is 0 ~ 5mm；
Preferably, the short glass fiber filament diameter is 1-10 μm.
3. a kind of preparation method of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1, its feature exists
In, described dispersant be one or two in methyl anyl alcohol, Sodium Polyacrylate；
Preferably, the Sodium Polyacrylate molecular weight is 1000 ~ 10000.
4. a kind of preparation method of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1, its feature exists
In described lubricant is 1, one or more in 2-propane diols, pentaerythrite, methyl propanediol.
5. a kind of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1 ~ 4, it is characterised in that described to urge
The unilateral hole count of agent is 30 ~ 60.
6. a kind of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1 ~ 4, it is characterised in that described to urge
Wall thickness is 0.2 ~ 0.7mm in agent.
7. a kind of honeycomb type thin-walled SCR denitration peculiar to vessel according to claim 1 ~ 4, it is characterised in that described to urge
Agent specific surface area is more than 600 m2/m3。
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| CN201710070044.5A CN106824298A (en) | 2017-02-09 | 2017-02-09 | A kind of honeycomb type thin-walled SCR denitration peculiar to vessel and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570136A (en) * | 2017-10-23 | 2018-01-12 | 上海第二工业大学 | A kind of preparation method of discrete state material enhancing block photochemical catalyst |
| CN108187658A (en) * | 2018-01-10 | 2018-06-22 | 北京国电龙源环保工程有限公司 | 50 hole SCR denitration modules and preparation method thereof |
| CN108283921A (en) * | 2018-01-10 | 2018-07-17 | 北京国电龙源环保工程有限公司 | 60 hole SCR denitration modules and preparation method thereof |
| WO2019154093A1 (en) * | 2018-02-09 | 2019-08-15 | 华电青岛环保技术有限公司 | Scr honeycomb denitration catalyst and preparation method therefor |
| CN115350697A (en) * | 2022-09-21 | 2022-11-18 | 华电青岛环保技术有限公司 | Thin-wall honeycomb type SCR denitration catalyst and preparation method thereof |
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| CN104815644A (en) * | 2015-03-16 | 2015-08-05 | 南通亚泰工程技术有限公司 | Porous honeycomb type denitration catalyst for ship denitration, preparation method and application thereof |
| CN106000435A (en) * | 2016-05-30 | 2016-10-12 | 龙岩紫荆创新研究院 | Cellular V2O5-Pr6O11-SbPO4/TiO2 based low-temperature sulfur-resistant denitration catalyst and preparation method thereof |
| CN106076403A (en) * | 2016-06-16 | 2016-11-09 | 上海净球环保科技有限公司 | A kind of preparation method of diesel exhaust gas denitrating catalyst |
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- 2017-02-09 CN CN201710070044.5A patent/CN106824298A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104815644A (en) * | 2015-03-16 | 2015-08-05 | 南通亚泰工程技术有限公司 | Porous honeycomb type denitration catalyst for ship denitration, preparation method and application thereof |
| CN106000435A (en) * | 2016-05-30 | 2016-10-12 | 龙岩紫荆创新研究院 | Cellular V2O5-Pr6O11-SbPO4/TiO2 based low-temperature sulfur-resistant denitration catalyst and preparation method thereof |
| CN106076403A (en) * | 2016-06-16 | 2016-11-09 | 上海净球环保科技有限公司 | A kind of preparation method of diesel exhaust gas denitrating catalyst |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570136A (en) * | 2017-10-23 | 2018-01-12 | 上海第二工业大学 | A kind of preparation method of discrete state material enhancing block photochemical catalyst |
| CN108187658A (en) * | 2018-01-10 | 2018-06-22 | 北京国电龙源环保工程有限公司 | 50 hole SCR denitration modules and preparation method thereof |
| CN108283921A (en) * | 2018-01-10 | 2018-07-17 | 北京国电龙源环保工程有限公司 | 60 hole SCR denitration modules and preparation method thereof |
| WO2019154093A1 (en) * | 2018-02-09 | 2019-08-15 | 华电青岛环保技术有限公司 | Scr honeycomb denitration catalyst and preparation method therefor |
| CN115350697A (en) * | 2022-09-21 | 2022-11-18 | 华电青岛环保技术有限公司 | Thin-wall honeycomb type SCR denitration catalyst and preparation method thereof |
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