CN108212222A - A kind of porous honeycomb formula low-temperature denitration catalyst - Google Patents
A kind of porous honeycomb formula low-temperature denitration catalyst Download PDFInfo
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- CN108212222A CN108212222A CN201711497660.5A CN201711497660A CN108212222A CN 108212222 A CN108212222 A CN 108212222A CN 201711497660 A CN201711497660 A CN 201711497660A CN 108212222 A CN108212222 A CN 108212222A
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- denitration catalyst
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- 239000003054 catalyst Substances 0.000 title claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims abstract description 14
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 229910000484 niobium oxide Inorganic materials 0.000 claims abstract description 9
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 6
- 230000032683 aging Effects 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- 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
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20723—Vanadium
-
- 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
- B01D2255/20769—Molybdenum
-
- 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
- B01D2255/20776—Tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/30—Silica
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to field of denitration catalyst, refer in particular to a kind of porous honeycomb formula low-temperature denitration catalyst, which is grouped as by each group of following parts by weight：1 10 parts of 75 90 parts of titanium dioxide, tungstic acid or molybdenum trioxide, 36 parts of silica, 16 parts of vanadic anhydride, 0.1 3 parts of niobium oxide, 0.1 3 parts of phosphorous oxide, 0.1 3 parts of stearic acid, 15 parts of glass fibre.Above-mentioned specific surface area of catalyst height, high mechanical strength, denitration efficiency is high in the range of 150 250 DEG C.
Description
Technical field
The present invention relates to field of denitration catalyst, refer in particular to a kind of porous honeycomb formula low-temperature denitration catalyst.
Background technology
Nitrogen oxides (NO, NO2 and N2O) is one of current environmental pollution major pollutants, these nitrogen oxides can be led
A series of problems, such as causing photochemical fog, acid rain, ozone layer depletion, greenhouse effects.
The discharged nitrous oxides control of non-electricity industry (including private station) has suffered from great difficulty, because of non-electrical
Lixing industry industrial pot (kiln) furnace apparatus (such as：Industrial Boiler, glass ceramics stove, cement furnace, Ferrous Metallurgy sintering furnace,
Cracking apparatus of coking and petrochemical system etc.) flue gas and the exhaust temperature of process gas that is related to nitric acid production and uses
Less than 300 DEG C, ranging from 300-420 DEG C of traditional denitrating catalyst Applicable temperature can not meet non-electricity industry requirement.
Existing low-temperature denitration catalyst specific surface area is low, denitration efficiency is not high, therefore catalyst amount is big, leads to denitration project cost
Height hinders the progress of non-electricity industry denitration control.Therefore, the present inventor makes further research this, and it is more to develop one kind
Thus hole honeycomb fashion low-temperature denitration catalyst, this case generate.
Invention content
The purpose of the present invention is to provide a kind of porous honeycomb formula low-temperature denitration catalysts, and specific surface area is high, mechanical strength
Height, denitration efficiency is high in the range of 150-250 DEG C.
To achieve these goals, technical scheme is as follows：
A kind of porous honeycomb formula low-temperature denitration catalyst, the catalyst are grouped as by each group of following parts by weight：Dioxy
Change 75-90 parts of titanium, tungstic acid or 1-10 parts of molybdenum trioxide, 3-6 parts of silica, 1-6 parts of vanadic anhydride, niobium oxide 0.1-
3 parts, 0.1-3 parts of phosphorous oxide, 0.1-3 parts of stearic acid, 1-5 parts of glass fibre.
Further, it is mixed and stirred for after each component is matched in parts by weight uniformly, then successively through aging, filtering
After pre-extruded, secondary aging, molding extrusion, drying and calcination, finished product finishing, you can pack to obtain finished catalyst.
Further, the glass fibre length≤4mm.
After using the above scheme, compared with prior art, the present invention haing the following advantages：
1. the denitration efficiency of per volume of catalyst and the specific surface area of catalyst have direct relation, specific surface area is bigger,
The denitration efficiency of per volume of catalyst is higher, and catalyst elements section hole count is more, and specific surface area is higher, and of the invention is de-
Denox catalyst unit section hole count >=25 × 25 are greatly improved the specific surface area of catalyst, so as to effectively improve list
The denitration efficiency of position volume of catalyst reduces the engineering dosage of catalyst；
2. niobium oxide is provided simultaneously with oxidationreduction ability, can enhance with the oxide catalyst of its doping or load
Catalytic oxidation activity, catalyst of the invention add niobium oxide, improve the activity of catalyst；
3. glass fibre length≤4mm that the present invention uses in preparation reduces the blocking wind of shaping of catalyst process
Danger, improves production efficiency.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
Embodiment 1
Each component is weighed according to following portions by weight.
80 parts of titanium dioxide, 10 parts of tungstic acid/molybdenum trioxide, 5 parts of silica, 3 parts of vanadic anhydride, niobium oxide 2
Part, 1 part of phosphorous oxide, 1 part of stearic acid, 2 parts of glass fibre are mixed and stirred for uniformly, so after each component is matched in parts by weight
Afterwards successively after aging, filtering pre-extruded, secondary aging, molding extrusion, drying and calcination, finished product finishing, you can pack to urge
Agent finished product.
Embodiment 2
Each component is weighed according to following portions by weight.
85 parts of titanium dioxide, 6 parts of tungstic acid/molybdenum trioxide, 4 parts of silica, 4 parts of vanadic anhydride, niobium oxide 1
Part, 1 part of phosphorous oxide, 1 part of stearic acid, 3 parts of glass fibre are mixed and stirred for uniformly, so after each component is matched in parts by weight
Afterwards successively after aging, filtering pre-extruded, secondary aging, molding extrusion, drying and calcination, finished product finishing, you can pack to urge
Agent finished product.
Embodiment 3
Each component is weighed according to following portions by weight.
82 parts of titanium dioxide, 5 parts of tungstic acid/molybdenum trioxide, 2 parts of silica, 3 parts of vanadic anhydride, niobium oxide 2
Part, 2 parts of phosphorous oxide, 2 parts of stearic acid, 3 parts of glass fibre are mixed and stirred for uniformly, so after each component is matched in parts by weight
Afterwards successively after aging, filtering pre-extruded, secondary aging, molding extrusion, drying and calcination, finished product finishing, you can pack to urge
Agent finished product.
Embodiment 4
Each component is weighed according to following portions by weight.
86 parts of titanium dioxide, 4 parts of tungstic acid/molybdenum trioxide, 2 parts of silica, 2 parts of vanadic anhydride, niobium oxide 2.5
Part, 1.5 parts of phosphorous oxide, 1 part of stearic acid, 3 parts of glass fibre are mixed and stirred for uniformly after each component is matched in parts by weight,
Then successively after aging, filtering pre-extruded, secondary aging, molding extrusion, drying and calcination, finished product finishing, you can pack
Finished catalyst.
Performance detection：Catalyst made from above-described embodiment is detected respectively, measures its properties of product such as 1 institute of table
Show：
Table 1：Catalyst performance list made from each embodiment
As can be seen from the above table：Porous honeycomb formula low temperature catalyst large specific surface area prepared by the present invention, low-temperature range
(150-250 DEG C) interior denitration efficiency is high, and high mechanical strength can be applied to low temperature SCR denitration engineering.
It above are only specific embodiments of the present invention, while involved such as " upper and lower, left and right, centre " in all present invention
Words are waited, are only used as with reference to not absolute limit, all changes that unsubstantiality is carried out using the present invention should all belong to and invade this hair
The behavior of bright protection domain.
Claims (3)
1. a kind of porous honeycomb formula low-temperature denitration catalyst, it is characterised in that：The catalyst by following parts by weight each component
Composition：1-10 parts of 75-90 parts of titanium dioxide, tungstic acid or molybdenum trioxide, 3-6 parts of silica, 1-6 parts of vanadic anhydride,
0.1-3 parts of niobium oxide, 0.1-3 parts of phosphorous oxide, 0.1-3 parts of stearic acid, 1-5 parts of glass fibre.
2. a kind of porous honeycomb formula low-temperature denitration catalyst according to claim 1, it is characterised in that：By each component
It is mixed and stirred for after matching in parts by weight uniformly, is then squeezed out successively through aging, filtering pre-extruded, secondary aging, molding, is dry
After dry and calcining, finished product finishing, you can pack to obtain finished catalyst.
3. a kind of porous honeycomb formula low-temperature denitration catalyst according to claim 1, it is characterised in that：The glass fibre
Length≤4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711497660.5A CN108212222A (en) | 2017-12-29 | 2017-12-29 | A kind of porous honeycomb formula low-temperature denitration catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711497660.5A CN108212222A (en) | 2017-12-29 | 2017-12-29 | A kind of porous honeycomb formula low-temperature denitration catalyst |
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| CN108212222A true CN108212222A (en) | 2018-06-29 |
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| CN201711497660.5A Pending CN108212222A (en) | 2017-12-29 | 2017-12-29 | A kind of porous honeycomb formula low-temperature denitration catalyst |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364968A (en) * | 2018-10-17 | 2019-02-22 | 浙江德创环保科技股份有限公司 | Low-temperature denitration catalyst and preparation method, mold and preparation method |
| CN112121831A (en) * | 2020-10-30 | 2020-12-25 | 山东信能达工程科技有限公司 | Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof |
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|---|---|---|---|---|
| CN101444727A (en) * | 2008-12-17 | 2009-06-03 | 中材高新材料股份有限公司 | Integral honeycombed catalyst for SCR flue-gas denitration and preparation method therefor |
| CN102416320A (en) * | 2011-11-23 | 2012-04-18 | 浙江德创环保科技有限公司 | Denitrifying catalyst |
| CN104841464A (en) * | 2015-05-08 | 2015-08-19 | 北京工业大学 | Preparation recipe and preparation method of low-temperature anti-sulfur SCR (Selective Catalytic Reduction) catalyst |
| CN105749943A (en) * | 2016-02-26 | 2016-07-13 | 东营信拓汽车***有限公司 | Low-temperature flue gas denitration catalyst powder and preparation method of low-temperature flue gas denitration catalyst powder |
| CN107335455A (en) * | 2017-06-09 | 2017-11-10 | 中国石油天然气股份有限公司 | Honeycomb type denitration catalyst capable of reducing activation temperature and preparation method thereof |
-
2017
- 2017-12-29 CN CN201711497660.5A patent/CN108212222A/en active Pending
Patent Citations (5)
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Non-Patent Citations (1)
| Title |
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| LIN ZHU等: ""NH3-SCR performance and the resistance to SO2 for Nb doped vanadium based catalyst at low temperatures"", 《JOURNAL OF ENVIRONMENTAL SCIENCES》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364968A (en) * | 2018-10-17 | 2019-02-22 | 浙江德创环保科技股份有限公司 | Low-temperature denitration catalyst and preparation method, mold and preparation method |
| CN112121831A (en) * | 2020-10-30 | 2020-12-25 | 山东信能达工程科技有限公司 | Wide-temperature sulfur-resistant water-resistant vanadium-titanium denitration catalyst and preparation method thereof |
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Application publication date: 20180629 |