CN204182288U - A kind of ring-like SCR reactor for low-temperature denitration of flue gas - Google Patents
A kind of ring-like SCR reactor for low-temperature denitration of flue gas Download PDFInfo
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- CN204182288U CN204182288U CN201420614789.5U CN201420614789U CN204182288U CN 204182288 U CN204182288 U CN 204182288U CN 201420614789 U CN201420614789 U CN 201420614789U CN 204182288 U CN204182288 U CN 204182288U
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Abstract
A kind of ring-like SCR reactor for low-temperature denitration of flue gas, comprise the reactor frame that the inner ring of arranged concentric successively from inside to outside, middle ring and outer shroud are formed, described inner ring top is opened wide, middle ring and outer shroud top seal, described inner ring and middle ring bottom lock, outer shroud bottom-open, the steel plate of described middle ring and inner ring and outer interannular is uniformly distributed with pore, is filled with catalyst in described middle ring; The utility model has that response area is large, pressure drop is low, the good feature of inside smoke even flow field, reaction effect, and the life-span is long, and modularized design is easily changed.
Description
Technical field
The utility model relates to SCR reactor technology field, is specifically related to a kind of ring-like SCR reactor for low-temperature denitration of flue gas.
Background technology
China is in the critical period of economic development.Between these decades, the consumption of the consumption of the energy, particularly fossil energy increases considerably.Coal, as the most widely used fossil energy of China, utilizes in process in burning and very easily produces SO
2, CO
2, NO
xand the material such as flying dust dust.And garbage burning factory due to its comburant composition more complicated, cause the complexity of its smoke components and pollute go even farther compared with common thermal power plant.At present, China for industrial dust improvement and control become effective; Flue gas desulfurization technique also reaches its maturity, and desulfurizing item spreads out in China in order; Have nitrogen oxide only, still also do not obtain strong control.
Compared to other western developed countries, China is to NO
xpollution control is started late, NO
xpollution control technology also relatively backwardness, but China was to NO in recent years
xcontrol and administer to give enough attention, successively put into effect a series of laws and regulations and standard, the overall control of nitrogen oxide is had higher requirement.
For the NO of stationary source discharge
x, with NH
3sCR technology (SCR) for reducing agent is current most study, most widely used, is also the most effective flue gas NO
xremoving sulfuldioxide.The most ripe catalyst of current use is V
2o
5/ TiO
2or at V
2o
5/ TiO
2basis is carried out the catalyst of modification, but vanadium titanium system SCR catalyst traditional at present just has greater activity in operating temperature higher than when 350 DEG C, therefore SCR reactor can only be arranged between economizer and deduster.But mostly reserve denitration space in this position in existing boiler, bring very large difficulty therefore to the commercial Application of SCR technique; Dust containing high concentration in the flue gas of this this process section external, also containing materials such as alkali metal, arsenic and mercury in dust, can produce very strong erosion and poisoning effect to catalyst, affect its life-span.For these reasons, after SCR reactor is arranged in dedusting or even desulfurizer by many scholar's suggestions in recent years.For avoiding the Repeat-heating to flue gas, saving and run and boiler improvement cost, the SCR catalyst that research and development has higher denitration activity under cryogenic has important economy and practical significance.
At present, conventional SCR denitration device mostly is honeycomb structured catalyst configurations.Honeycomb structured catalyst configurations is in use easily blocked by flying dust, and response area is little, and floor space is large.Therefore the utility model is to this has been improvement.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of ring-like SCR reactor for low-temperature denitration of flue gas, have that response area is large, pressure drop is low, the good feature of inside smoke even flow field, reaction effect, and the life-span is long, modularized design is easily changed.
In order to reach above object, the utility model adopts following technical scheme:
A kind of ring-like SCR reactor for low-temperature denitration of flue gas, comprise the reactor frame that the inner ring 1 of arranged concentric successively from inside to outside, middle ring 2 and outer shroud 3 are formed, described inner ring 1 top is opened wide, middle ring 2 and outer shroud 3 top seal, described inner ring 1 and middle ring 2 bottom lock, outer shroud 3 bottom-open, described middle ring 2 and the steel plate between inner ring 1 and outer shroud 3 are uniformly distributed with pore, are filled with catalyst 4 in described middle ring 2.
Described middle ring 2 is field-replaceable unit, after in middle ring 2, catalyst filling 4 completes service life, and can dismounting and change.
Described reactor frame is cylinder.
Described catalyst 4 is trifolium-shaped catalyst.
Compared to the prior art, the utility model has the following advantages:
The utility model has that response area is large, pressure drop is low, the good feature of inside smoke even flow field, reaction effect, and the life-span is long, and modularized design is easily changed.
Accompanying drawing explanation
Fig. 1 is the utility model reactor top view.
Fig. 2 is the utility model reactor-side view.
Fig. 3 is flue gas flow direction top view in the utility model reactor.
Fig. 4 is flue gas flow direction side view in the utility model reactor.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in further details.
As depicted in figs. 1 and 2, a kind of ring-like SCR reactor for low-temperature denitration of flue gas of the utility model, comprise the reactor frame that the inner ring 1 of arranged concentric successively from inside to outside, middle ring 2 and outer shroud 3 are formed, described inner ring 1 top is opened wide, middle ring 2 and outer shroud 3 top seal, described inner ring 1 and middle ring 2 bottom lock, outer shroud 3 bottom-open, described middle ring 2 and the steel plate between inner ring 1 and outer shroud 3 are uniformly distributed with pore, in described middle ring 2, are filled with catalyst 4.
As shown in Figure 2, the vertex of a cone and the cone end can also be provided with at the top of reactor frame and bottom.
As preferred embodiment of the present utility model, described middle ring 2 is field-replaceable unit, after in middle ring 2, catalyst filling 4 completes service life, detachably changes.
As preferred embodiment of the present utility model, described reactor frame is cylinder.
As preferred embodiment of the present utility model, described catalyst 4 is trifolium-shaped catalyst.
As shown in Figure 3 and Figure 4, air-flow enters reactor by inner ring 1.Middle ring 2 and between inner ring 1 and outer shroud 3 steel plate be non-tight parts, be provided with equally distributed pore, can air-flow circulate be supplied.Air-flow enters horizontal proliferation after reactor by inner ring 1, after the catalyst 4 in middle ring 2, flow into outer shroud 3.Reactor bottom inner ring 1, middle ring 2 are seal member, and air-flow can from outflow reactor bottom outer shroud 3.
Claims (4)
1. the ring-like SCR reactor for low-temperature denitration of flue gas, it is characterized in that: the inner ring (1) comprising from inside to outside arranged concentric successively, the reactor frame that middle ring (2) and outer shroud (3) are formed, described inner ring (1) top is opened wide, middle ring (2) and outer shroud (3) top seal, described inner ring (1) and middle ring (2) bottom lock, outer shroud (3) bottom-open, described middle ring (2) and the steel plate between inner ring (1) and outer shroud (3) are uniformly distributed with pore, catalyst (4) is filled with in described middle ring (2).
2. the ring-like SCR reactor for low-temperature denitration of flue gas according to claim 1, it is characterized in that: described middle ring (2) is field-replaceable unit, after in middle ring (2), catalyst filling (4) completes service life, can dismounting and change.
3. the ring-like SCR reactor for low-temperature denitration of flue gas according to claim 1, is characterized in that: described reactor frame is cylinder.
4. the ring-like SCR reactor for low-temperature denitration of flue gas according to claim 1, is characterized in that: described catalyst (4) is trifolium-shaped catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614789.5U CN204182288U (en) | 2014-10-22 | 2014-10-22 | A kind of ring-like SCR reactor for low-temperature denitration of flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614789.5U CN204182288U (en) | 2014-10-22 | 2014-10-22 | A kind of ring-like SCR reactor for low-temperature denitration of flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN204182288U true CN204182288U (en) | 2015-03-04 |
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| CN201420614789.5U Active CN204182288U (en) | 2014-10-22 | 2014-10-22 | A kind of ring-like SCR reactor for low-temperature denitration of flue gas |
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| CN (1) | CN204182288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335389A (en) * | 2017-09-07 | 2017-11-10 | 安徽晨晰洁净科技有限公司 | A kind of Novel SCR Benitration reactor |
-
2014
- 2014-10-22 CN CN201420614789.5U patent/CN204182288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335389A (en) * | 2017-09-07 | 2017-11-10 | 安徽晨晰洁净科技有限公司 | A kind of Novel SCR Benitration reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Junhua Inventor after: Huang Xu Inventor after: Peng Yue Inventor after: Guan Lijun Inventor after: Wang Ziteng Inventor after: Hao Jiming Inventor after: He Liang Inventor after: Wang Mingfei Inventor after: Wen Dong Inventor before: Li Junhua Inventor before: Huang Xu Inventor before: Peng Yue Inventor before: Guan Lijun Inventor before: Wang Ziteng Inventor before: Hao Jiming |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150918 Address after: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee after: Tsinghua University Patentee after: Beijing Sanitation Group Environmental Research Development Co., Ltd. Address before: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee before: Tsinghua University |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee after: Tsinghua University Patentee after: Beijing Environment Engineering Technology Co., Ltd. Address before: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Patentee before: Tsinghua University Patentee before: Beijing Sanitation Group Environmental Research Development Co., Ltd. |