CN201815314U - Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology - Google Patents
Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology Download PDFInfo
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- CN201815314U CN201815314U CN2010205798212U CN201020579821U CN201815314U CN 201815314 U CN201815314 U CN 201815314U CN 2010205798212 U CN2010205798212 U CN 2010205798212U CN 201020579821 U CN201020579821 U CN 201020579821U CN 201815314 U CN201815314 U CN 201815314U
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- catalyst
- pore passage
- internal pore
- regular hexagonal
- honeycombed
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- 239000003054 catalyst Substances 0.000 title claims abstract description 61
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 239000011148 porous material Substances 0.000 title abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003546 flue gas Substances 0.000 claims abstract description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- -1 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model relates to a honeycombed catalyst provided with a regular hexagonal internal pore passage structure and used for an SCR (Selective Catalytic Reduction) denitration technology. The regular hexagonal internal pore passage combines the advantages of a square internal pore passage and a circular internal pore passage, and the uniformity of fluid flow rate and the pore passage area within the cross sectional area of the catalyst per unit of the regular hexagonal internal pore passage are defined between the square internal pore passage and the circular internal pore passage; and the flow rate of reactive gas in the internal pore passage of the catalyst is evener, meanwhile, and catalyst solid layers around the internal pore passage adopt uniform Y-shaped structures of equal thickness, so that the strength of a solid skeleton layer is enhanced. The honeycombed catalyst structurally comprises a catalyst skeleton, wherein a plurality of flue gas flow internal pore passages distributed in honeycombed shapes are arranged in the catalyst skeleton, and the transverse cross-section of each internal pore passage is regular hexagonal.
Description
Technical field
The utility model relates to a kind of SCR denitration technology honeycombed catalyst of regular hexagon inner duct structure.
Background technology
Along with the issuing and implementation of " thermal power plant's atmosphere pollution control discharge standard " and the Air Pollution Prevention Law, China is strict day by day to the control of NOx discharging.According to expectation, will need build denitrating system at least about the unit that 200,000,000 kW capacity are arranged from 2010.Selective-catalytic-reduction denitrified technology (being called for short the SCR technology) is the effect by means of catalyst, utilizes optionally reductive NO of reducing agent (as ammonia and urea)
x, make it generate the nitrogen G﹠W.Catalyst proportion in SCR denitrating system construction cost is quite big, and needs periodically to change.
SCR technology at present commonly used mainly contains honeycomb fashion and flat two kinds with catalyst, and the honeycombed catalyst global formation need not any other material as carrier, and catalyst integral body all has catalytic action, and the life-span is longer relatively.Flat catalyst adopts woven wire as carrier, and its effective catalyst component spreads upon on the metallic carrier equably, because effectively catalyst component is few in the unit volume, flat catalyst life is shorter relatively.In engineering was used, two types catalyst all was packaged into module, was placed in as requested in the SCR reactor, and can realizes the modularization replacing.At present, honeycombed catalyst relies on that the unit volume active component is many, catalytic efficiency is high and advantage such as modularization is easy to use and being used on a large scale.
Honeycombed catalyst commonly used at present mostly is global formation, and effective catalyst component of catalyst and moulding additive are sent to mould and are squeezed into to having the honeycombed catalyst of regular pore canal structure after fully mixing.At present, the duct of honeycombed catalyst mostly is circular duct and square duct, this duct layout makes the flow distribution of flue gas by catalyst the time more even, be beneficial to gas by the time better be adsorbed on catalyst surface and carry out reduction reaction, circular in addition and square these regular figures more help the making of catalyst.For the catalyst of square inner duct structure, its unit volume inner duct area is big, helps improving the SCR reaction efficiency, but gas is when the square inner duct, and the cross section flow velocity is inhomogeneous, and four jiaos flow velocity is low, causes catalyst not make full use of; For the circular inner hole structure, gas flow rate is evenly distributed, but the solid reaction layer thickness inequality between the hole is little at catalyst unit volume inner duct area, has reduced the utilization rate of catalyst.
Summary of the invention
The purpose of this utility model is exactly for addressing the above problem, a kind of SCR denitration technology honeycombed catalyst of regular hexagon inner duct structure has been proposed, it combines the advantage in square inner duct and circular inner hole road, and the duct area in its rate of flow of fluid uniformity and the unit catalyst cross-sectional area is between between the two.Reacting gas velocity ratio in the catalyst inner duct is more even, and the catalyst solid layer of inner duct periphery is " bifurcation " shape structure of even equal thickness simultaneously, and the intensity of solid bone rack-layer is improved.
The utility model adopts following technical scheme:
A kind of SCR denitration technology honeycombed catalyst of regular hexagon inner duct structure, it comprises catalyst backbone, is provided with the flue gas circulation inner duct of several cellular distributions in the catalyst backbone, the cross section of described inner duct is a regular hexagon.
Described catalyst backbone is cube or cylinder or gengon.
The catalyst of regular hexagon inner duct structure of the present utility model, integral body still adopts honeycomb shape, but the flue gas flow passage on the cross section adopts the regular hexagon structure.Utilize the line cutting to produce the honeycombed catalyst mould of regular hexagon inner duct structure, the height of mould is looked requirement of engineering, install on the equipment of making catalyst module, utilize punch forming or extrusion molding, with the stock that catalyst reaction composition and compositions such as carrier, additive are made into, be made into the honeycombed catalyst of regular hexagon inner duct structure.
The beneficial effects of the utility model are:
Honeycombed catalyst adopts regular hexagon inner duct structure, the velocity ratio of reacting gas in inner duct is more even, while regular hexagon Zhou Changda, near the circular inner hole road, guaranteed flue gas by the time response area, and the catalyst solid layer of duct periphery is " bifurcation " shape structure of even equal thickness, the intensity of catalyst is improved, increase life of catalyst, improved the utilization rate of catalyst, reduced the operating cost and the maintenance cost of boiler smoke SCR denitrating system.
Description of drawings
Fig. 1 cube catalyst plane;
Fig. 1 a is the stereogram of Fig. 1;
Fig. 2 is six prismatic catalyst planes;
Fig. 2 a is the stereogram of Fig. 2.
Wherein, 1 inner duct, 2 catalyst backbones.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1:
Among Fig. 1, Fig. 1 a, honeycombed catalyst skeleton 2 cross sections are square, regular hexagon inner duct 1 is by the row, column proper alignment, two the orthohexagonal centers close with adjacent row, an orthohexagonal center are triangular arranged, and the solid bone rack-layer that forms between the regular hexagon is " bifurcation " shape structure of equal thickness.
Embodiment 2:
Among Fig. 2, Fig. 2 a, honeycombed catalyst skeleton 2 cross sections are regular hexagon, regular hexagon inner duct 1 is by the row, column proper alignment, two the orthohexagonal centers close with adjacent row, an orthohexagonal center are triangular arranged, and the solid bone rack-layer that forms between the regular hexagon is " bifurcation " shape structure of equal thickness.
Claims (2)
1. the SCR denitration technology honeycombed catalyst of a regular hexagon inner duct structure, it comprises catalyst backbone, is provided with the flue gas circulation inner duct of several cellular distributions in the catalyst backbone, it is characterized in that the cross section of described inner duct is a regular hexagon.
2. the SCR denitration technology honeycombed catalyst of regular hexagon inner duct structure as claimed in claim 1 is characterized in that, described catalyst backbone is cube or cylinder or gengon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205798212U CN201815314U (en) | 2010-10-27 | 2010-10-27 | Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205798212U CN201815314U (en) | 2010-10-27 | 2010-10-27 | Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201815314U true CN201815314U (en) | 2011-05-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205798212U Expired - Fee Related CN201815314U (en) | 2010-10-27 | 2010-10-27 | Honeycombed catalyst provided with regular hexagonal internal pore passage structure and used for SCR denitration technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN201815314U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| WO2014114739A1 (en) | 2013-01-25 | 2014-07-31 | Yara International Asa | Honeycomb monolith structure with cells having elongated cross-section |
| CN104093476A (en) * | 2012-02-13 | 2014-10-08 | 日立造船株式会社 | Exhaust gas nox removal device for diesel engine |
| CN106536050A (en) * | 2014-07-23 | 2017-03-22 | 亚拉国际有限公司 | Honeycomb monolith structure |
| CN106763774A (en) * | 2017-01-13 | 2017-05-31 | 海宁英和金属制品有限公司 | A kind of sheet metal inside casing limit sealing structure |
| CN112638506A (en) * | 2018-09-14 | 2021-04-09 | 三菱动力株式会社 | Denitration device |
| CN115672308A (en) * | 2022-10-21 | 2023-02-03 | 河北威达蓝海环保科技股份有限公司 | Manufacturing process of honeycomb catalyst monomer for SCR denitration |
-
2010
- 2010-10-27 CN CN2010205798212U patent/CN201815314U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104093476A (en) * | 2012-02-13 | 2014-10-08 | 日立造船株式会社 | Exhaust gas nox removal device for diesel engine |
| CN104093476B (en) * | 2012-02-13 | 2016-01-20 | 日立造船株式会社 | For the exhaust gas denitration device of Diesel engine |
| WO2014114739A1 (en) | 2013-01-25 | 2014-07-31 | Yara International Asa | Honeycomb monolith structure with cells having elongated cross-section |
| US10189017B2 (en) | 2013-01-25 | 2019-01-29 | Yara International Asa | Honeycomb monolith structure |
| CN103212451A (en) * | 2013-04-19 | 2013-07-24 | 中电投远达环保工程有限公司 | Honeycomb catalyst unit and honeycomb catalyst module |
| CN106536050A (en) * | 2014-07-23 | 2017-03-22 | 亚拉国际有限公司 | Honeycomb monolith structure |
| US10150076B2 (en) | 2014-07-23 | 2018-12-11 | Yara International Asa | Honeycomb monolith structure |
| CN106536050B (en) * | 2014-07-23 | 2019-05-21 | 亚拉国际有限公司 | Honeycomb monolith structures |
| CN106763774A (en) * | 2017-01-13 | 2017-05-31 | 海宁英和金属制品有限公司 | A kind of sheet metal inside casing limit sealing structure |
| CN112638506A (en) * | 2018-09-14 | 2021-04-09 | 三菱动力株式会社 | Denitration device |
| CN115672308A (en) * | 2022-10-21 | 2023-02-03 | 河北威达蓝海环保科技股份有限公司 | Manufacturing process of honeycomb catalyst monomer for SCR denitration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130318 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130318 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee before: Shandong Research Inst. of Electric Power |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20191027 |