CN201115815Y - Desulfurization absorption tower temporary flue gas discharging device - Google Patents
Desulfurization absorption tower temporary flue gas discharging device Download PDFInfo
- Publication number
- CN201115815Y CN201115815Y CNU2007202011805U CN200720201180U CN201115815Y CN 201115815 Y CN201115815 Y CN 201115815Y CN U2007202011805 U CNU2007202011805 U CN U2007202011805U CN 200720201180 U CN200720201180 U CN 200720201180U CN 201115815 Y CN201115815 Y CN 201115815Y
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- China
- Prior art keywords
- interim
- chimney
- changeover portion
- flue gas
- taper type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a fuel-gas temporarily-discharging device of a desulfurization absorbing tower, which is connected at the top of the absorbing tower, a frustum-shaped transition section is connected on an original smoke vent, a lower-annular reinforced ring is fixedly connected with the periphery at the joint of the original smoke vent and the frustum-shaped transition section, the upper end of the frustum-shaped transition section is connected with a temporary chimney with a temporary coping, an upper-annular reinforced ring is fixedly connected with the periphery at the joint of the frustum-shaped transition section and the temporary chimney, and the fuel-gas desulfurized from the absorbing tower can be vented into atmosphere directly by the temporary chimney under the condition that a main chimney fails to vent the fuel-gas temporarily. As maintenance standby facility of the system, the fuel-gas temporarily-discharging device has the advantages of simple structure, convenient maintenance and dynamic devices free, realizes the energy conservation and the environment protection and solves the technical problem that a fuel-gas desulfurizing system can not be continuously operated during the device reconstruction or maintenance of the fuel-gas desulfurizing system of a coal burning boiler by a limestone gypsum method.
Description
(1) technical field
The utility model relates to the tapping equipment that a kind of flue gas desulphurization system desulfurizing tower is handled the back flue gas.
(2) background technology
The key facility of tradition lime lime-gypsum method coal burning flue gas desulfurization system is the absorption tower, the absorption tower cat head has the flange baffle plate, the fume emission mouth is linked to each other with main chimney by the smoke evacuation pipeline, the top is provided with lime stone slurry spray equipment and demister in the absorption tower, the spray equipment below has former cigarette inlet port on absorption Tata wall, the bottom on absorption tower is a slurry pool, and slurry pool is provided with agitating device and forced oxidation device, and the bottom of slurry pool is connected with the gypsum slurries discharge pipe.Tradition lime lime-gypsum method coal burning flue gas desulfurization system can only realize intermitten service, in operate as normal, the main chimney of flue gas through the outside, absorption tower after the absorption tower desulfurization is handled discharges, but when run into that main chimney needs to be serviced, corrosion-proof lining construction, overhaul, light maintenance or in the old power plant desulfurization scrap build process of part, the fume emission of existing equipment and the fume emission of reforming equipment will clash.In these cases, because of flue gas can't normally discharge, original desulfurizing adsorption system and generating set must be out of service, light maintenance takes about 7 days out of service, and overhaul then needs about 1 month out of service, calculates by an annual light maintenance of unit, an overhaul in 23 years, not only annual can the interruption produced normally, reduce generating more than 400 hour, cause serious economy loss, be equivalent to 140,000 tons of sulfur dioxide in the coal more but also discharged to atmosphere.
(3) utility model content
The purpose of this utility model provides the interim tapping equipment of a kind of desulfuration absorbing tower flue gas, solve in the scrap build of lime lime-gypsum method coal burning flue gas desulfurization system or operation and the flue gas technical problem of temporarily discharging continuously during safeguarding.
For achieving the above object, the utility model adopts following technical scheme:
The interim tapping equipment of this desulfuration absorbing tower flue gas, it is characterized in that: this device is connected absorption tower 1 top of tower, on former exhaust opening 2, connect taper type changeover portion 4, at former exhaust opening 2 and the peripheral affixed following hoop stiffening ring 7 of the seam crossing of taper type changeover portion 4, at the interim chimney 3 of the interim top cover 5 of the upper end of taper type changeover portion 4 connecting band, hoop stiffening ring 6 on peripheral affixed one of the seam crossing of taper type changeover portion 4 and interim chimney 3.
The material of above-mentioned interim chimney and taper type changeover portion is steel or glass-reinforced plastic material.
As the further optimized technical scheme of the utility model: the inwall of above-mentioned interim chimney and taper type changeover portion is lined with anticorrosive coat.
The cross section of above-mentioned interim chimney 3 can be circle or rectangle.
The lower end of above-mentioned taper type changeover portion 4 is consistent with the cat head opening shape on absorption tower, and the upper end of taper type changeover portion is consistent with the end opening of interim chimney 3.
The height of above-mentioned taper type changeover portion is 4～8m, and the awl wall thickness of above-mentioned taper type changeover portion is 10～20mm, and the internal diameter of above-mentioned taper type changeover portion upper end is 2～6.5m, and the internal diameter of awl section lower end is 11～15.5m, and its inclination angle a is 53～67 degree.
Above-mentioned interim top cover can be connected with manually-operated gate or automatic valve.
Can be connected with the reinforcing cable between above-mentioned interim chimney and the absorption tower.
Compared with prior art the utlity model has following characteristics and beneficial effect:
The utlity model has following advantage:
1, the utility model can be realized desulfuration absorbing tower operation continuously between turn(a)round, carry out not influencing under the maintenance works such as corrosion-proof lining construction the normal operation of desulfurizing tower at main chimney, also can be used as the transition of other smoke removal facility when safeguarding, and in the old power plant desulfurization scrap build process of part, the fume emission of existing equipment can be carried out separately, the fume emission with reforming equipment does not clash, avoided system break to generate electricity normally, retrieved economic loss, but also avoided at the generating intercourse to airborne release sulfur dioxide pollution environment.
2, the utility model is installed in the desulfuration absorbing tower top with the interim tapping equipment of desulfuration absorbing tower flue gas, simple in structure, energy-conserving and environment-protective, do not need to expend the energy, do not need to install additional any power set, do not influence the normal operation of desulfurizing tower, solved in the old power plant desulfurization scrap build process of part the problem that the fume emission of original boiler plant and the fume emission of reforming equipment may clash effectively.
3, compact conformation, easy to maintenance, easily dismounting, after the maintenance work of having implemented original chimney, can be with interim chimney demolition, also can be used as the transition of other smoke removal facility when safeguarding, can the maintenance work of original chimney not impacted.
4, adopt the taper type changeover portion, former exhaust opening and the diameter that with diameter is 11-16 rice is that the interim chimney of 2-7 rice suitably is connected, and helps flue gas and discharges smoothly.Owing to adopt bipassage ring to stiffening ring at connecting portion, make connection firmly reliable more, flue gas can not revealed.
The standby discharging facility of the utility model when safeguarding applicable to lime lime-gypsum method coal burning flue gas desulfurization system, particularly is applicable to the operation of the flue gas desulfurization facility of 200MW-600MW generating set.
(4) description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the interim tapping equipment of desulfuration absorbing tower flue gas.
Fig. 2 is the schematic diagram of lime lime-gypsum method coal burning flue gas desulfurization system.
Reference numeral: hoop stiffening ring, 8-flange baffle plate, 9-smoke evacuation pipeline, 10-master's chimney, 11-spray equipment, 12-demister, the former cigarette inlet port of 13-, 14-slurry pool, 15-agitating device, 16-forced oxidation device, 17-gypsum slurries discharge pipe, 18-valve under 1-absorption tower, the former exhaust opening of 2-, the interim chimney of 3-, 4-taper type changeover portion, the interim top cover of 5-, the last hoop stiffening ring of 6-, the 7-.
(5) specific embodiment
Embodiment is referring to shown in Fig. 1,2, the interim tapping equipment of this desulfuration absorbing tower flue gas, it is characterized in that: this device is connected absorption tower 1 top of tower, on former exhaust opening 2, connect taper type changeover portion 4, at former exhaust opening 2 and the peripheral affixed following hoop stiffening ring 7 of the seam crossing of taper type changeover portion 4, at the interim chimney 3 of the interim top cover 5 of the upper end of taper type changeover portion 4 connecting band, hoop stiffening ring 6 on peripheral affixed one of the seam crossing of taper type changeover portion 4 and interim chimney 3.The whole desulfurizer height that comprises chimney can reach more than 80 meters.
The material of above-mentioned interim chimney and taper type changeover portion is steel or glass-reinforced plastic material.The inwall of interim chimney and taper type changeover portion can be lined with anticorrosive coat, and anticorrosion scheme is glass flake or other anticorrosion scheme.
The cross section of above-mentioned interim chimney 3 can be circle or rectangle.The lower end of taper type changeover portion 4 is consistent with the cat head opening shape on absorption tower, and the upper end of taper type changeover portion is consistent with the end opening of interim chimney 3.The height of taper type changeover portion is 4～8m, and the awl wall thickness of above-mentioned taper type changeover portion is 14mm, and the internal diameter of above-mentioned taper type changeover portion upper end is 2～6.5m, and the internal diameter of awl section lower end is 11～15.5m, and its inclination angle a is 53～67 degree.
Above-mentioned interim top cover can be connected with manually-operated gate or automatic valve.Can be connected with the reinforcing cable between interim chimney and the absorption tower.
Before being installed, the interim tapping equipment of desulfuration absorbing tower flue gas needs the process device intensity and the stress of device are carried out analytical calculation.Have chimney to need to safeguard when running into, when requiring the impregnable situation of the fume emission of desulphurization plant simultaneously, before the chimney maintenance work finishes, the chimney transition apparatus be set, make desulfurization after wet flue gas directly discharge by transition apparatus.Several the used several fume desulfurating absorption tower smoke evacuation systems of generating set can link to each other through pipeline, and a shared interim tapping equipment of flue gas.
When the installation of new system, after the absorption tower main body erected, by at the top, absorption tower the flange baffle plate being set, in top of tower welding transition awl section, awl section top added interim chimney.During other major overhaul, original absorption tower desulphurization system continues operation, removes top of tower flange baffle plate, and the wet flue gas after the desulfurization is by interim smoke stack emission, and chimney begins the corrosion-proof lining construction.Interim chimney will be done preservative treatment, and after chimney anticorrosion work was finished, flue gas was removed transition awl section and interim chimney again by smoke stack emission, and the upper flange baffle plate recovers the top, absorption tower.
The continuous operation method of this desulfuration absorbing tower, its absorption tower cat head is connected with flange baffle plate 8, the fume emission mouth is linked to each other with main chimney 10 by smoke evacuation pipeline 9, the top is provided with lime stone slurry spray equipment 11 and demister 12 in the absorption tower, the spray equipment below has former cigarette inlet port 13 on absorption Tata wall, the bottom on absorption tower is a slurry pool 14, and slurry pool is provided with agitating device 15 and forced oxidation device 16, the bottom of slurry pool is connected with gypsum slurries discharge pipe 17, it is characterized in that step is as follows:
Step 1, at the cat head opening on absorption tower.Do not have when pressure, the flange baffle plate 8 of dismountable absorption tower cat head when pressing operation, can hide with interim closure plate earlier at opening part.
Claims (8)
1. interim tapping equipment of desulfuration absorbing tower flue gas, it is characterized in that: this device is connected absorption tower (1) top of tower, go up connection taper type changeover portion (4) at former exhaust opening (2), at former exhaust opening (2) and the peripheral affixed following hoop stiffening ring (7) of the seam crossing of taper type changeover portion (4), at the interim chimney (3) of the interim top cover of upper end connecting band (5) of taper type changeover portion (4), go up hoop stiffening ring (6) peripheral affixed one of the taper type changeover portion (4) and the seam crossing of interim chimney (3).
2. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: the material of above-mentioned interim chimney and taper type changeover portion is steel or glass-reinforced plastic material.
3. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: the inwall of above-mentioned interim chimney and taper type changeover portion is lined with anticorrosive coat.
4. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: the cross section of above-mentioned interim chimney (3) is circle or rectangle.
5. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: the lower end of above-mentioned taper type changeover portion (4) is consistent with the cat head opening shape on absorption tower, and the upper end of taper type changeover portion is consistent with the end opening of interim chimney (3).
6. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1, it is characterized in that: the height of above-mentioned taper type changeover portion is 4～8m, the awl wall thickness of above-mentioned taper type changeover portion is 10～20mm, the internal diameter of above-mentioned taper type changeover portion upper end is 2～6.5m, the internal diameter of awl section lower end is 11～15.5m, and its inclination angle a is 53～67 degree.
7. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: above-mentioned interim top cover is connected with manually-operated gate or automatic valve.
8. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 1 is characterized in that: be connected with the reinforcing cable between above-mentioned interim chimney and the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011805U CN201115815Y (en) | 2007-10-19 | 2007-10-19 | Desulfurization absorption tower temporary flue gas discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007202011805U CN201115815Y (en) | 2007-10-19 | 2007-10-19 | Desulfurization absorption tower temporary flue gas discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201115815Y true CN201115815Y (en) | 2008-09-17 |
Family
ID=39990387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007202011805U Expired - Lifetime CN201115815Y (en) | 2007-10-19 | 2007-10-19 | Desulfurization absorption tower temporary flue gas discharging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201115815Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219335B (en) * | 2007-09-29 | 2010-09-08 | 北京朗新明环保科技有限公司 | Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas |
| CN103591597A (en) * | 2013-09-24 | 2014-02-19 | 华电郑州机械设计研究院有限公司 | Dismountable reusable temporary chimney |
| CN106437812A (en) * | 2016-11-16 | 2017-02-22 | 公安部四川消防研究所 | Universal-type flue gas short circuit preventing device for subway ventilation pavilion and installing method of universal-type flue gas short circuit preventing device |
-
2007
- 2007-10-19 CN CNU2007202011805U patent/CN201115815Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219335B (en) * | 2007-09-29 | 2010-09-08 | 北京朗新明环保科技有限公司 | Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas |
| CN103591597A (en) * | 2013-09-24 | 2014-02-19 | 华电郑州机械设计研究院有限公司 | Dismountable reusable temporary chimney |
| CN103591597B (en) * | 2013-09-24 | 2016-01-20 | 华电郑州机械设计研究院有限公司 | A kind of temporary chimney of detachable recycling |
| CN106437812A (en) * | 2016-11-16 | 2017-02-22 | 公安部四川消防研究所 | Universal-type flue gas short circuit preventing device for subway ventilation pavilion and installing method of universal-type flue gas short circuit preventing device |
| CN106437812B (en) * | 2016-11-16 | 2018-08-14 | 公安部四川消防研究所 | A kind of installation method of universal ground iron winds pavilion flue gas short-circuiting means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080917 |
|
| CX01 | Expiry of patent term |