CN103591597A - Dismountable reusable temporary chimney - Google Patents
Dismountable reusable temporary chimney Download PDFInfo
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- CN103591597A CN103591597A CN201310437584.4A CN201310437584A CN103591597A CN 103591597 A CN103591597 A CN 103591597A CN 201310437584 A CN201310437584 A CN 201310437584A CN 103591597 A CN103591597 A CN 103591597A
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Abstract
The invention discloses a dismountable reusable temporary chimney, particularly relates to a dismountable reusable temporary desulfurization chimney for the treatment of the absorption tower of the smoke desulfurization system of a coal-fired power plant, and aims to solve the technical problems that the existing temporary chimneys is high in basic manufacturing work amount, high in manufacturing cost, long in working period, severe in resource waste, poor in economy and large in ground destruction. The chimney comprises a cylinder, a horizontal flue and a self-lifting system. The horizontal flue is connected with a smoke purifying flue. The other end of the horizontal flue is connected with the cylinder which is fixed on the self-lifting system. By the structure, onsite working period is shortened greatly, efficiency is increased, the cylinder of the sectional type can be interchanged, and accordingly the chimney is reusable, and resource waste is lowered.
Description
Technical field
The present invention relates to a kind of chimney, be specifically related to after the processing of a kind of coal fired power plant flue gas desulfurization system absorption tower the tapping equipment of detachable reusable interim desulfuration chimney.
Background technology
In recent years, the SO of coal-burning power plant
2discharge index control stricter, all coal-fired units need append dress desulfurizer.Desulfuration efficiency becomes most coal-burning power plants main separation sulfur removal technology up to the limestone-gypsum wet desulfuration technique of 95 ℅.This kind of sulfur removal technology is owing to should not establishing GGH(flue gas heat-exchange unit), the SO of remnants in the flue gas that it is discharged
2, SO
3be about 2 acid strongly corrosion liquid Deng easily forming pH value at inner wall of stack, the corrosion of aggravation chimney, therefore must carry out anticorrosion transformation to original main chimney.This anticorrosion transformation duration generally needs 2 ~ 4 months, in order to guarantee that former main chimney unit during anticorrosion transformation normally moves, need build an interim chimney and replace original chimney to guarantee not blowing out construction.
The interim chimney of use divides the following several form that mainly contains from installation site at present:
1, interim chimney is arranged at absorption tower top.Its shortcoming is that the tilting moment of interim chimney can pass to absorption tower, easily causes absorption tower distortion, causes corrosion-proof lining be full of cracks, and the reinforcement later stage of weakness setting cannot remove, not recommendation;
2, interim chimney is arranged on the exhaust pass of absorption tower, by original flue support, bears interim chimney load.Its limitation is that transformation place must just have suitable flue support to utilize and reinforcement need be set, and the construction period needs corresponding lengthening, and scene needs high-altitude construction, and difficulty of construction is larger;
3, interim chimney is arranged on vacant lot, desulfurization region (as shown in Figure 1), it is divided into ground above and below ground two parts, ground is the fixed integral barrel 11 of steel welding above, below ground is pre-buried concrete foundation 12, and cylinder is by the reliable connection of pre-embedded bolt 13 realizations and ground.This scheme does not affect unit operation when interim chimney is installed; the interface condition of reserved good and clean flue when interim chimney is implemented; before the later stage, chimney anticorrosion erosion transformation was implemented, pipeline docking is carried out in of short duration shutdown, and owing to taking root in ground, execution conditions are good.On interim chimney, monitor required platform staircase etc. and also can conveniently arrive, operation maintenance condition is good.
By comparing, we think that the third scheme is obviously better than first two scheme, and this is also current the most frequently used scheme, but this scheme still exists limitation and drawback.
Because after general power plant builds up, on-the-spot remaining place is limited, field operation space is also limited, to large generating set carrying out desulfurization when anticorrosion, need interim chimney just large, in requisition for crane and working space just greatly, therefore, in such narrow space, realize lifting operation just very difficult.In addition, the third scheme is owing to taking root in ground, below ground is wanted pre-buried concrete foundation, excavate and the prismatic ground of drum diameter, in order to guarantee the resistance to overturning of interim chimney, it is larger that concrete foundation is generally all done, then pre-embedded bolt, casting concrete, quantities is very large, and ground is damaged; And take ground fire-fighting traffic route once run into interim chimney, before interim chimney demolition, vehicle is impassable.
In addition, no matter adopt above-mentioned that scheme, its shell portion is all fixed integral barrel, and needs field fabrication.Because the diameter of interim chimney cylindrical portions is to determine according to flue gas flow rate and flow, generally all larger, for avoiding transportation clearance to transfinite, is all to bend with steel plate at the scene, be welded, so just increased construction period.In addition, this fixed interim chimney, is all to make for single engineering design, disposable use, and this just unavoidably causes the wasting of resources.
In sum, the fixed interim chimney of prior art has following shortcoming: basic fabrication amount is large, cost is high; Making in site, the installation period of chimney steel cylinder are long; Chimney is disposable use, serious waste of resources; Work progress needs larger installing space and large lifting equipment, less economical; Larger to ground failure, during chimney work, affect vehicle pass-through.
The problem existing for existing fixing interim chimney, develops a kind of novel interim chimney imperative.
Summary of the invention
The technical problem to be solved in the present invention is that existing fixing interim chimney raft fabrication amount is large, cost is high, long in time limit, serious waste of resources, less economical, larger to ground failure, and providing only needs that simple ground is processed, only need be lifted by small crane, the interim chimney of a kind of detachable recycling of installation certainly.
For achieving the above object, the present invention adopts following technical proposals: a kind of interim chimney of detachable recycling, and comprise cylinder, horizontal flue and certainly rise system, horizontal flue is connected with clean flue, and the other end is connected with cylinder, and cylinder is fixed on rising system.
Described is fixed on supporting leg from the system of liter, and the system that certainly rises comprises door frame, stock and hoist engine, and stock is connected with door frame, and hoist engine is arranged on the platform of door frame top.
Described supporting leg has 4, and top, top is provided with saddle weight.
Described cylinder comprises at least 2 segment standard sections, and the length of every segment standard section is 2-3m.The length of described every segment standard section is 2.5m.
Described every segment standard section comprises at least 3 standard films, every described standard film be standard paragraphs by etc. central angle alpha divide the fanning strip forming.Described every segment standard section comprises 4 standard films.Every described standard film edge is provided with bolt hole.
Adopting the present invention after said structure is all the installation unit of convenient transportation, so this chimney critical piece all can complete in factory process, on-the-spotly only need to assemble, dismounting and anticorrosive work.The site operation cycle shortens greatly like this, has improved efficiency.Adopt supporting leg ballast formula to support, without embedded foundation, little to field ground structural deterioration; Structure division is complete in factory process, and scene only needs production technique flue part, and the construction period is short; Shell portion adopts segmentation chip, and can exchange, and can reuse, and has reduced the wasting of resources; Employing is from jacking installation system, and easy installation and removal, and need to be by large-scale crane requires littlely to working space, especially at narrow and small place, more can show his superiority.
Accompanying drawing explanation
Fig. 1 is that prior art is arranged on the interim chimney structure schematic diagram on vacant lot, desulfurization region.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the structural representation of supporting leg.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is from jack-up system structural representation.
Fig. 6 is the main TV structure schematic diagram of cylindrical shell standard paragraphs.
Fig. 7 is the plan structure schematic diagram of cylindrical shell standard paragraphs.
Fig. 8 is the main TV structure schematic diagram of cylindrical shell standard film.
Fig. 9 is the plan structure schematic diagram of cylindrical shell standard film.
The specific embodiment
As shown in Figure 2, the present invention includes cylinder 1, horizontal flue 2 and certainly rise system 4, horizontal flue 2 is connected with clean flue 7, and the other end is connected with cylinder 1, and cylinder 1 is fixed on rising system 4.
As shown in Figure 5, described is fixed on supporting leg 6 from rising system 4, certainly rises system 4 and comprises door frame 43, stock 41 and hoist engine 42, and stock 41 is connected with door frame 43, and hoist engine 42 is arranged on the platform of door frame 43 tops.During installation, first door frame 43 and stock 41 are in place, then are arranged on the platform of door frame 43 tops with hoist engine 42 promoting.
As shown in Figure 3 and Figure 4, described supporting leg 6 has 4, and top, top is provided with saddle weight 61.By 4 supporting legs, add the method that saddle weight 61 carries out counterweight interim chimney is fixed on the ground, supporting leg is a square box-structure, and the length and width size of supporting leg is according to the required grounding pressure calculative determination of engineering.Because of the large grounding pressure that reduced of supporting leg ground plane, thereby reduced based process difficulty, do not needed to do special ground and process.Ballast is for guaranteeing the stability against overturning of complete machine, and it can adopt cast iron, concrete or sandstone material to make according to on-the-spot material situation flexibly.
As shown in Figures 6 to 9, described cylinder 1 comprises at least 2 segment standard sections, and the length of every segment standard section is 2-3m.The length of described every segment standard section is 2.5m.The length of described every segment standard section can be also 2m, 2.5m, 3m.Described every segment standard section comprises at least 3 standard films 5, described every standard film 5 are standard paragraphs by etc. central angle alpha divide the fanning strip forming.Described every segment standard section comprises 4 standard films 5.Described every standard film 5 edges are provided with bolt hole 51.Adopt the cylindrical shell of segmentation and slicing formula, its principle is first cylindrical shell 1 to be divided into several standard paragraphs, each standard paragraphs is 90 ° by central angle alpha again and is divided into four, and there is interchangeability between section and section and sheet and sheet, can in advance these standard films 5 be carried out at factory, standard film 5 is transported to behind building site, at the scene sheet and sheet is bolted to composition standard paragraphs, between standard paragraphs, is being bolted into cylindrical shell 1.The height of cylindrical shell can also need to adjust by increasing or reduce the quantity of interim chimney standard paragraphs according to building-site.Because cylindrical shell 1 is made into standard paragraphs and the standard film with interchangeability, after an engineering, interim chimney is disassembled into single chip architecture shipping to next building site, again do after preservative treatment, can again come into operation.So just thoroughly changed the disposable interim chimney way of single engineering of prior art.
Below the invention will be further described:
According to engineering desulfurization region deployment scenarios, interim chimney is installed on Yi Ce position, absorption tower, as shown in Figure 2, first the ground at supporting leg 6 places, place is suitably processed, make its earth bearing strength that reaches 200KPa, then door frame 43 is connected with supporting leg 6 by bearing pin, then stock 41 is bolted on door frame 43, after door frame 43 and stock 41 are in place, then the hoist engine 42 that promotes use is arranged on the platform of door frame 43 tops.
As shown in Figure 8 and Figure 9, standard length of a film is 2.5 meters, central angle alpha is the fanning strip of 90 °, according to field condition, the interim chimney of take high as 50 meters be example, remove outside door frame and stock height, this interim chimney cylindrical portions is 40 meters, because each cylinder standard paragraphs is 2.5 meters, this project needs 16 standard paragraphs.By bolt, every 4 standard films are formed to tower cylinder standard paragraphs at the scene, form altogether 16 standard paragraphs, then with flatcar 8, first standard paragraphs I is introduced to door frame below, and be promoted in stock 41 with hoist engine 42, vacate door frame 43 lower space, again second standard paragraphs II introduced to door frame 43 belows with flatcar 8, starting hoist engine 42 puts first standard paragraphs I in stock 41 to second standard paragraphs II of door frame 43 belows, align and with bolt, the flange of two standard paragraphs is connected afterwards, then adjust hoist engine hoisting point position, after firm fixing, starting hoist engine overall increases to two standard paragraphs in stock 41 again, repeat above action, by the 3rd, the 4th, ...., until last standard paragraphs is promoted in stock 41, and fix with a upper standard paragraphs, after 16 standard paragraphs are all fixed together, the cylindrical shell of 40 meters is just assembled complete, by transition collar tie beam, door frame and cylinder integral body are reliably connected again, from the work of liter, complete, interim chimney has just installed.Then, horizontal flue 2 one end are welded on clean flue 7, the other end and interim chimney couple together, and have so just realized main chimney during anticorrosion transformation, and unit still can normally move.
Claims (8)
1. the interim chimney of a detachable recycling, it is characterized in that: comprise cylinder (1), the horizontal flue (2) being connected with former clean flue (7), certainly rise system (4), horizontal flue (2) one end is connected with clean flue (7), the other end is connected with cylinder (1), and cylinder (1) is fixed on rising system (4).
2. the interim chimney of detachable recycling according to claim 1, it is characterized in that: described is fixed on supporting leg (6) from rising system (4), from rising system (4), comprise door frame (43), stock (41) and hoist engine (42), stock (41) is connected with door frame (43), and hoist engine (42) is arranged on the platform of door frame (43) top.
3. the interim chimney of detachable recycling according to claim 2, is characterized in that: described supporting leg (6) has 4, and top, top is provided with saddle weight (61).
4. the interim chimney of detachable recycling according to claim 1, is characterized in that: described cylinder (1) comprises at least 2 segment standard sections, and the length of every segment standard section is 2-3m.
5. the interim chimney of detachable recycling according to claim 4, is characterized in that: the length of described every segment standard section is 2.5m.
6. the interim chimney of detachable recycling according to claim 4, is characterized in that: described every segment standard section comprises at least 3 standard films (5), described every standard film (5) be standard paragraphs by etc. central angle alpha divide the fanning strip forming.
7. the interim chimney of detachable recycling according to claim 6, is characterized in that: described every segment standard section comprises 4 standard films (5).
8. the interim chimney of detachable recycling according to claim 6, is characterized in that: described every standard film (5) edge is provided with bolt hole (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437584.4A CN103591597B (en) | 2013-09-24 | 2013-09-24 | A kind of temporary chimney of detachable recycling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437584.4A CN103591597B (en) | 2013-09-24 | 2013-09-24 | A kind of temporary chimney of detachable recycling |
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| CN103591597A true CN103591597A (en) | 2014-02-19 |
| CN103591597B CN103591597B (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113713559A (en) * | 2021-08-31 | 2021-11-30 | 中国化学工程第十六建设有限公司 | Method for modularizing and manufacturing installation device of activated carbon desulfurization and denitrification adsorption tower |
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| JPH11151422A (en) * | 1997-11-19 | 1999-06-08 | Ishikawajima Harima Heavy Ind Co Ltd | Chimney integrated type flue gas desulfurizer |
| JP2000084352A (en) * | 1998-09-09 | 2000-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Stack-integrated flue gas desulfurization unit |
| 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 |
| CN101352652A (en) * | 2008-09-22 | 2009-01-28 | 浙江天地环保工程有限公司 | Desulfuration chimney capable of integrally dissembling |
| CN203533585U (en) * | 2013-09-24 | 2014-04-09 | 华电郑州机械设计研究院有限公司 | Temporary chimney capable of being dismantled and reused |
-
2013
- 2013-09-24 CN CN201310437584.4A patent/CN103591597B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11151422A (en) * | 1997-11-19 | 1999-06-08 | Ishikawajima Harima Heavy Ind Co Ltd | Chimney integrated type flue gas desulfurizer |
| JP2000084352A (en) * | 1998-09-09 | 2000-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Stack-integrated flue gas desulfurization unit |
| 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 |
| CN101352652A (en) * | 2008-09-22 | 2009-01-28 | 浙江天地环保工程有限公司 | Desulfuration chimney capable of integrally dissembling |
| CN203533585U (en) * | 2013-09-24 | 2014-04-09 | 华电郑州机械设计研究院有限公司 | Temporary chimney capable of being dismantled and reused |
Non-Patent Citations (1)
| Title |
|---|
| 朱国宇: "湿法烟气脱硫装置临时烟囱方案选择及应用", 《电力技术》, vol. 19, no. 19, 25 October 2010 (2010-10-25) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113713559A (en) * | 2021-08-31 | 2021-11-30 | 中国化学工程第十六建设有限公司 | Method for modularizing and manufacturing installation device of activated carbon desulfurization and denitrification adsorption tower |
| CN113713559B (en) * | 2021-08-31 | 2024-06-04 | 中国化学工程第十六建设有限公司 | Method for modularly manufacturing installation device of active carbon desulfurization and denitrification adsorption tower |
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| CN103591597B (en) | 2016-01-20 |
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