CN206184257U - A flue gas vortex device for SCR deNOx systems - Google Patents
A flue gas vortex device for SCR deNOx systems Download PDFInfo
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- CN206184257U CN206184257U CN201621173507.8U CN201621173507U CN206184257U CN 206184257 U CN206184257 U CN 206184257U CN 201621173507 U CN201621173507 U CN 201621173507U CN 206184257 U CN206184257 U CN 206184257U
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- spoiler
- flue
- flue gas
- gas
- gas approach
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model provides a flue gas vortex device for SCR deNOx systems, it can effectively solve flue and catalyst abrasion that the gas distribution inequality results in, spout that the ammonia tube hole stops up, ammonia injection grid adjusts that the degree of difficulty strengthens and boiler tail flue gas NOx discharges scheduling problem not up to standard, can the operation steady in a long -term of assurance system, it is including the boiler, economizer, entry flue, SCR reactor, the exhaust pass that connect gradually install ammonia injection grid in the entry flue the ammonia injection grid upper reaches still install the vortex device in the entry flue, the vortex device with flue gas incoming flow direction plane phase is perpendicular in the entry flue, the vortex device is including being fixed in gusset plate in the entry flue gusset plate both ends face all is fixed with the spoiler, and the spoiler at both ends is cross arrangement, the windward side of the spoiler at both ends respectively with incoming flow flue gas in the entry flue inclines mutually.
Description
Technical field
The utility model is related to the technical field of coal-fired power plant's equipment for denitrifying flue gas, especially selective catalytic reduction
（SCR）The disturbing flow device being used in denitration reactor inlet flue in denitration technology, particularly for the flue gas of SCR denitration system
Disturbing flow device.
Background technology
SCR denitration technology is to apply a kind of most, the most ripe effective flue gas NOx removing sulfuldioxide now, in recent years, with
The proposition and popularization of minimum discharge theory, power-plant flue gas NOx emission standard is more and more stricter, and this is proposed more to denitration device
High request；General SCR denitration flue gas treating process flow is：Respectively through boiler back end ductwork outlet → denitration reactor inlet
Flue → Benitration reactor → exhaust pass, but in boiler smoke SCR denitration engineering, SCR system flow field is optimized
Shi Faxian, due to air distribution in boiler running process and the influence of burning, flue gas flow rate is uneven in heated surface at the end of boiler passage, cigarette
It is gentle in deviation, this can cause NOx skewness in flue, spray ammonia tube hole plug, uptake flue inwall and denitration catalyst
The problems such as abrasion occurs in agent, so as to decline not only catalyst efficiency, afterbody NOx emission is exceeded, while also shorten other setting
Standby service life.
The content of the invention
Regarding to the issue above, the utility model provides the flue gas disturbing flow device for SCR denitration system, and it can effectively be solved
Flue and catalyst abrasion, spray ammonia tube hole plug, ammonia-spraying grid regulation difficulty are increased and boiler caused by certainly smoke distribution is uneven
The problems such as tail flue gas NOx emission is not up to standard, can guarantee that system is run steadily in the long term.
Its technical scheme is so：It includes the boiler, economizer, gas approach, SCR reactors, the outlet that are sequentially connected
Flue, ammonia-spraying grid is provided with the gas approach, it is characterised in that：In the entrance cigarette of the ammonia-spraying grid upstream
Disturbing flow device is also equipped with road, the disturbing flow device is perpendicular with flue gas direction of flow plane in the gas approach, described
Disturbing flow device includes the securing plate being fixed in the gas approach, and spoiler is respectively and fixedly provided with the securing plate both ends of the surface, and
The spoiler at two ends is in arranged crosswise, the windward side of the spoiler at two ends respectively with the gas approach in incline flowing Gas phase Smoke
Tiltedly.
It is further characterized by：Securing plate setting parallel with the gas approach wall, the securing plate exists
Along being spaced evenly distributed arrangement on the gas approach length direction, width, the flow-disturbing in the securing plate
The slanted angle between flue gas is flowed in plate windward side correspondence and the gas approach for 30 ° ~ 45 °；
The spoiler at least 3 on the gas approach width is arranged, and the adjacent two row spoiler it
Between in being staggeredly arranged symmetrically, be fixedly connected with the gas approach inwall near the spoiler of the gas approach wall side；
Center spacing between the spoiler on the gas approach length direction is 450 mm ~ 550mm；
The length of the spoiler is 300mm ~ 500mm, and width is 400 mm ~ 600mm；
The spoiler, the material of securing plate are steel plate.
In said structure of the present utility model, due to increased disturbing flow device, flow-disturbing in the gas approach of SCR reactors
Tilting flowing flue gas in plate and gas approach, so as to the flue gas introduced from boiler back end ductwork be sufficiently mixed,
The distribution of flue gas flow rate and NOx is have adjusted, while the dust big to granularity serves certain inhibition again, is effectively solved
Flue and catalyst abrasion, spray ammonia tube hole plug, ammonia-spraying grid regulation difficulty are increased and boiler caused by smoke distribution is uneven
The problems such as tail flue gas NOx emission is not up to standard, ensure that the operation steady in a long-term of system afterwards.
Brief description of the drawings：
Fig. 1 is mounting structure schematic diagram of the present utility model；
Fig. 2 is disturbing flow device, the installation mplifying structure schematic diagram of ammonia-spraying grid in the utility model gas approach；
Fig. 3 is the sectional perspective schematic diagram of the utility model disturbing flow device；
Fig. 4 is the side view of utility model disturbing flow device.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3, Figure 4, arrow is flue gas flow direction in figure, and the utility model includes the boiler being sequentially connected
1st, economizer 2, gas approach 3, SCR reactors 4, exhaust pass 5, ammonia-spraying grid 6 is provided with gas approach 3, in spray ammonia
Disturbing flow device 7 is also equipped with the gas approach 3 of the upstream of grid 6, disturbing flow device 7 is put down with flue gas direction of flow in gas approach 3
Face is perpendicular, and disturbing flow device 7 includes the securing plate 8 being fixed in gas approach 3, and flow-disturbing is respectively and fixedly provided with the both ends of the surface of securing plate 8
Plate 9, and the spoiler 9 at two ends is in arranged crosswise, the windward side of the spoiler 9 at two ends respectively with gas approach 3 in flow cigarette
Gas phase is inclined.
The setting parallel with the wall of gas approach 3 of securing plate 8, securing plate 8 is along the length direction of gas approach 3, width
Evenly distributed arrangement is spaced on direction, in the windward side of spoiler 9 in securing plate 8 correspondence and gas approach 3 to flow flue gas between
Slanted angle be 43 °；Securing plate 8 is in row × row：6 × 3 evenly distributed arrangements, i.e. disturbing on the width of gas approach 3
Stream plate 9 has between 4 row, and adjacent two row spoiler 9 in being staggeredly arranged symmetrically, and is close to the spoiler 9 of the wall side of gas approach 3 and enters
The mouth inwall of flue 3 is fixedly connected, and the center spacing between the spoiler 9 on the length direction of gas approach 3 is 500mm；Disturb
The length for flowing plate 9 is 400mm, and width is 450mm, and the length of the length more than securing plate 8 of spoiler 9, the width of spoiler 9 is big
In the width of securing plate 8；Spoiler 9, the material of securing plate 8 are steel plate.
In the utility model, when the disturbing flow device 7 in the gas approach 3 of SCR reactors 4 is flowed through to flow flue gas, flue gas quilt
Spoiler 9 flows through ammonia-spraying grid 6 after being sufficiently mixed, the distribution of flue gas flow rate and NOx is adjusted, while the big dust of granularity
Also certain obstruction is obtained, the uneven caused flue of smoke distribution and catalyst abrasion, spray ammonia tube hole plug, spray is efficiently solved
The problems such as ammonia grid regulation difficulty is increased and boiler tail flue gas NOx emission is not up to standard, so as to ensure that system is run steadily in the long term.
Claims (5)
1. the flue gas disturbing flow device of SCR denitration system is used for, and it includes the boiler, economizer, gas approach, the SCR that are sequentially connected
Reactor, exhaust pass, ammonia-spraying grid is provided with the gas approach, it is characterised in that：In the ammonia-spraying grid upstream
The gas approach in be also equipped with disturbing flow device, the disturbing flow device and flue gas direction of flow plane in the gas approach
Perpendicular, the disturbing flow device includes the securing plate being fixed in the gas approach, is fixed in the securing plate both ends of the surface
Have a spoiler, and the spoiler at two ends is in arranged crosswise, the windward side of the spoiler at two ends respectively with the gas approach in
Tilted to flow flue gas.
2. the flue gas disturbing flow device for SCR denitration system according to claim 1, it is characterised in that：The securing plate
Setting parallel with the gas approach wall, the securing plate is on along the gas approach length direction, width
Evenly distributed arrangement is spaced, flue gas is flowed in the spoiler windward side in securing plate correspondence and the gas approach
Between slanted angle be 30 ° ~ 45 °.
3. the flue gas disturbing flow device for SCR denitration system according to claim 1, it is characterised in that：In the entrance
The spoiler at least 3 on flue width is arranged, and is leaned in being staggeredly arranged symmetrically between the adjacent two row spoiler
The spoiler of the nearly gas approach wall side is fixedly connected with the gas approach inwall.
4. the flue gas disturbing flow device for SCR denitration system according to claim 1, it is characterised in that：Along it is described enter
The center spacing between the spoiler on mouth flue length direction is 450 mm ~ 550mm；The length of the spoiler is
300mm ~ 500mm, width is 400 mm ~ 600mm.
5. the flue gas disturbing flow device for SCR denitration system according to claim 1, it is characterised in that：The spoiler,
The material of securing plate is steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173507.8U CN206184257U (en) | 2016-11-03 | 2016-11-03 | A flue gas vortex device for SCR deNOx systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621173507.8U CN206184257U (en) | 2016-11-03 | 2016-11-03 | A flue gas vortex device for SCR deNOx systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206184257U true CN206184257U (en) | 2017-05-24 |
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ID=58733323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621173507.8U Active CN206184257U (en) | 2016-11-03 | 2016-11-03 | A flue gas vortex device for SCR deNOx systems |
Country Status (1)
| Country | Link |
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| CN (1) | CN206184257U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345293A (en) * | 2016-11-03 | 2017-01-25 | 无锡华光新动力环保科技股份有限公司 | Fume turbulent flow device used in SCR denitrification system |
| CN111551424A (en) * | 2020-05-21 | 2020-08-18 | 国网天津市电力公司电力科学研究院 | Application to SO2Flue gas mixer for concentration measurement |
-
2016
- 2016-11-03 CN CN201621173507.8U patent/CN206184257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345293A (en) * | 2016-11-03 | 2017-01-25 | 无锡华光新动力环保科技股份有限公司 | Fume turbulent flow device used in SCR denitrification system |
| CN111551424A (en) * | 2020-05-21 | 2020-08-18 | 国网天津市电力公司电力科学研究院 | Application to SO2Flue gas mixer for concentration measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220929 Address after: 3 / F, 406 Jinhua North Road, Xincheng District, Xi'an, Shaanxi 710000 Patentee after: Huaguang Environmental Energy (Xi'an) Design and Research Institute Co.,Ltd. Address before: No. 123, Meiyu Road, New District, Wuxi City, Jiangsu Province, 214112 Patentee before: WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |