CN101219335B - Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas - Google Patents
Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas Download PDFInfo
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- CN101219335B CN101219335B CN2007102019178A CN200710201917A CN101219335B CN 101219335 B CN101219335 B CN 101219335B CN 2007102019178 A CN2007102019178 A CN 2007102019178A CN 200710201917 A CN200710201917 A CN 200710201917A CN 101219335 B CN101219335 B CN 101219335B
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- interim
- changeover portion
- chimney
- flue gas
- taper type
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 45
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003546 flue gas Substances 0.000 title claims abstract description 45
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 38
- 230000003009 desulfurizing Effects 0.000 title claims abstract description 24
- 239000010440 gypsum Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 12
- 230000003014 reinforcing Effects 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 22
- 241000282326 Felis catus Species 0.000 claims description 17
- 210000003128 Head Anatomy 0.000 claims description 17
- 239000000779 smoke Substances 0.000 claims description 16
- 238000010079 rubber tapping Methods 0.000 claims description 15
- 239000003517 fume Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral Effects 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003245 coal Substances 0.000 abstract description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 7
- 235000015450 Tilia cordata Nutrition 0.000 abstract description 7
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 7
- 239000004571 lime Substances 0.000 abstract description 7
- 238000011017 operating method Methods 0.000 abstract 1
- 230000001131 transforming Effects 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000002407 reforming Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002335 preservative Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention relates to a continuous operating method for a desulfurization absorption tower and a temporary discharge device thereof for flue gas is connected to the top of the absorption tower. A frustum shape transition section is connected on an original exhaust port, a lower cylindrical reinforcing ring is fixedly connected to the periphery of a joint between the original exhaust port and a frustum shape transition section, and the upper end of the frustum shape transition section is connected with a temporary chimney with a temporary top cap; an upper cylindrical reinforcing ring is fixedly connected to the periphery of a joint between the frustum shape transition section and the temporary chimney, when the flue gas can not be discharged through a main chimney, the flue gas after being desulfurized inside the absorption tower directly passes through the temporary chimney and is discharged into the atmosphere. As maintaining alternate facility of a system, the invention has simple structure and convenient maintenance, does not need power equipment, realizes energy saving and environmental protection and solves the technical problem that the flue gas desulfurization system can not be operated continuously when transforming or maintaining equipment of a lime stone-gypsum desulfurization system for coal boiler flue gas.
Description
(1) technical field
The present invention relates to a kind of lime lime-gypsum method coal burning flue gas desulfurization system operation method and desulfurizing tower and handle the tapping equipment of 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 of 2-3, 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) summary of the invention
The purpose of this invention is to provide continuous operation method of a kind of desulfuration absorbing tower and the interim tapping equipment of flue gas thereof, solve during the scrap build or maintenance of lime lime-gypsum method coal burning flue gas desulfurization system the technical problem that flue gas desulphurization system can't move continuously.
For achieving the above object, the present invention adopts following technical scheme:
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;
Step 2, on the cat head opening, connect taper type changeover portion 4, interim chimney 6 at the interim top cover 5 of the upper end of taper type changeover portion 4 connecting band, hoop stiffening ring 7 is reinforced under the former exhaust opening 2 and the seam crossing of taper type changeover portion 4 are used, and uses hoop stiffening ring 6 at the taper type changeover portion 4 and the seam crossing of interim chimney 6 and reinforces;
Step 3, open interim top cover 5, valve-off 18 temporarily can not lead under the situation of flue gas at main chimney, the flue gas after the desulfurization of absorption tower directly the interim smoke stack emission by cat head to atmosphere;
Step 4, treat that scrap build or maintenance work are finished after, interim top cover 5 is closed, open valve 18, recover mode by main smoke stack emission flue gas.
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 6 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 present invention: 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 present invention has following characteristics and beneficial effect:
The present invention has the following advantages:
1, the present invention can realize 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 present invention 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 present invention 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 present invention will be further described in 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 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, 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.
Step 2, on the cat head opening, connect taper type changeover portion 4, interim chimney 3 at the interim top cover 5 of the upper end of taper type changeover portion 4 connecting band, hoop stiffening ring 7 is reinforced under the former exhaust opening 2 and the seam crossing of taper type changeover portion 4 are used, and uses hoop stiffening ring 6 at the taper type changeover portion 4 and the seam crossing of interim chimney 3 and reinforces.
Step 3, open interim top cover 5, remove closure plate, valve-off 18 temporarily can not lead under the situation of flue gas at main chimney, the flue gas after the desulfurization of absorption tower directly the interim smoke stack emission by cat head to atmosphere.
Step 4, treat that scrap build or maintenance work are finished after, interim top cover 5 is closed, open valve 18, recover mode by main smoke stack emission flue gas.
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.
Claims (7)
1. continuous operation method of 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 slurry pool (14), 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;
Step 2, on the cat head opening, connect taper type changeover portion (4), interim chimney (3) at the interim top cover of upper end connecting band (5) of taper type changeover portion (4), hoop stiffening ring (7) is reinforced under the former exhaust opening (2) and the seam crossing of taper type changeover portion (4) are used, and uses hoop stiffening ring (6) at the taper type changeover portion (4) and the seam crossing of interim chimney (3) and reinforces; 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;
Step 3, open interim top cover (5), valve-off (18) temporarily can not lead under the situation of flue gas at main chimney, the flue gas after the desulfurization of absorption tower directly the interim smoke stack emission by cat head to atmosphere;
Step 4, treat that scrap build or maintenance work are finished after, interim top cover (5) is closed, open valve (18), recover mode by main smoke stack emission flue gas.
2. 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);
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;
The inwall of above-mentioned interim chimney and taper type changeover portion is lined with anticorrosive coat.
3. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 2 is characterized in that: the material of above-mentioned interim chimney and taper type changeover portion is steel or glass-reinforced plastic material.
4. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 2 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 2 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 2 is characterized in that: above-mentioned interim top cover is connected with manually-operated gate or automatic valve.
7. the interim tapping equipment of desulfuration absorbing tower flue gas according to claim 2 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 |
|---|---|---|---|
| CN2007102019178A CN101219335B (en) | 2007-09-29 | 2007-09-29 | Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007102019178A CN101219335B (en) | 2007-09-29 | 2007-09-29 | Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas |
Publications (2)
| Publication Number | Publication Date |
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| CN101219335A CN101219335A (en) | 2008-07-16 |
| CN101219335B true CN101219335B (en) | 2010-09-08 |
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| CN2007102019178A Active CN101219335B (en) | 2007-09-29 | 2007-09-29 | Continuous operation method for desulfurization absorption column and temporary bleeder for flue gas |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352652B (en) * | 2008-09-22 | 2011-05-18 | 浙江天地环保工程有限公司 | Desulfuration chimney capable of integrally dissembling |
| CN105561741A (en) * | 2016-02-15 | 2016-05-11 | 大唐环境产业集团股份有限公司 | Multifunctional flue gas emission device of efficient absorption tower |
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| CN2173903Y (en) * | 1992-05-06 | 1994-08-10 | 黑龙江省农垦科学院农业工程研究所 | Separated spiral groove pipe heat-exchanging furnace |
| CN1128503A (en) * | 1994-05-11 | 1996-08-07 | 巴布考克日立株式会社 | Wet type exhaust gas desulfurization apparatus and method utilizing solid desulfurizing agent |
| CN2655044Y (en) * | 2003-07-03 | 2004-11-10 | 何挺佳 | Environmental protection energy-saving gas boiler |
| CN2711669Y (en) * | 2004-08-06 | 2005-07-20 | 鞍山绿冶热能工程技术有限公司 | Fin pipe type waste heat boiler for recovering waste heat of sintering cooling-machine |
| CN201115815Y (en) * | 2007-10-19 | 2008-09-17 | 北京朗新明环保科技有限公司 | Desulfurization absorption tower temporary flue gas discharging device |
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2007
- 2007-09-29 CN CN2007102019178A patent/CN101219335B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173903Y (en) * | 1992-05-06 | 1994-08-10 | 黑龙江省农垦科学院农业工程研究所 | Separated spiral groove pipe heat-exchanging furnace |
| CN1128503A (en) * | 1994-05-11 | 1996-08-07 | 巴布考克日立株式会社 | Wet type exhaust gas desulfurization apparatus and method utilizing solid desulfurizing agent |
| CN2655044Y (en) * | 2003-07-03 | 2004-11-10 | 何挺佳 | Environmental protection energy-saving gas boiler |
| CN2711669Y (en) * | 2004-08-06 | 2005-07-20 | 鞍山绿冶热能工程技术有限公司 | Fin pipe type waste heat boiler for recovering waste heat of sintering cooling-machine |
| CN201115815Y (en) * | 2007-10-19 | 2008-09-17 | 北京朗新明环保科技有限公司 | Desulfurization absorption tower temporary flue gas discharging device |
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| CN101219335A (en) | 2008-07-16 |
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Address after: 100088, Haidian District, Huayuan Road, Beijing No. 13 courtyard, International Building, 8 floor Patentee after: Guoneng Lang Xinming Environmental Protection Technology Co.,Ltd. Address before: 100088, Haidian District, Huayuan Road, Beijing No. 13 courtyard, International Building, 8 floor Patentee before: BEIJING LUCENCY ENVIRO-TECH Co.,Ltd. |