CN103591597B - A kind of temporary chimney of detachable recycling - Google Patents
A kind of temporary chimney of detachable recycling Download PDFInfo
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- CN103591597B CN103591597B CN201310437584.4A CN201310437584A CN103591597B CN 103591597 B CN103591597 B CN 103591597B CN 201310437584 A CN201310437584 A CN 201310437584A CN 103591597 B CN103591597 B CN 103591597B
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Abstract
The invention discloses a kind of temporary chimney of detachable recycling, after being specifically related to the process of a kind of coal fired power plant flue gas desulfurization Systemic absorption tower, the tapping equipment of detachable reusable interim desulfuration chimney.The technical problem solved is that existing fixing temporary chimney basis fabrication amount is large, cost is high, long in time limit, serious waste of resources, less economical, larger to ground failure.The present invention includes cylinder, horizontal flue and from rising system, horizontal flue is connected with clean flue, and the other end is connected with cylinder, and cylinder is fixed on from rising in system.Adopt the present invention after such structure, the site operation cycle shortens greatly, improves efficiency, and shell portion adopts segmentation chip, and can exchange, and can reuse, reduce the wasting of resources.
Description
Technical field
The present invention relates to a kind of chimney, after being specifically related to the process of a kind of coal fired power plant flue gas desulfurization Systemic absorption tower, the tapping equipment of detachable reusable interim desulfuration chimney.
Background technology
In recent years, coal-burning power plant SO
2discharge index control stricter, all coal unit need add 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 establish GGH(flue gas heat-exchange unit), SO remaining in the flue gas that it is discharged
2, SO
3easily form Deng at inner wall of stack the acid strongly corrosion liquid that pH value is about 2, 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 ensure that former main chimney unit during anticorrosion transformation normally runs, need build a temporary chimney to replace original chimney to ensure that not blowing out is constructed.
The temporary chimney of current use is come from installation site point to mainly contain following several form:
1, temporary chimney is arranged at absorption tower top.Its shortcoming is that the tilting moment of temporary chimney can pass to absorption tower, easily causes absorption tower to be out of shape, causes corrosion-proof lining to chap, and the reinforcement later stage that weakness is arranged cannot remove, not recommendation;
2, temporary chimney is arranged on the exhaust pass of absorption tower, bears temporary chimney load by original flue support.Its limitation is that transformation place must just have suitable flue support can utilize and need arrange reinforcement, and the construction period needs corresponding lengthening, and scene needs high-altitude to construct, and difficulty of construction is larger;
3, temporary chimney is arranged on (as shown in Figure 1) on vacant lot, desulfurization zone, it is divided into more than ground and below ground two parts, it more than ground is the fixed integral barrel 11 of steel welding, below ground is pre-buried concrete foundation 12, and cylinder passes through the reliable connection of pre-embedded bolt 13 realization and ground.The program does not affect unit operation when temporary chimney is installed; the interface condition with clean flue is reserved when temporary chimney is implemented; before the later stage, chimney anticorrosion erosion transformation was implemented, of short duration shutdown is carried out pipeline and is docked, and owing to taking root in ground, execution conditions are good.Temporary chimney is monitored required platform staircase etc. also can conveniently to 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 scheme the most frequently used at present, but this scheme still also exists limitation and drawback.
Because after general power plant builds up, on-the-spot remaining place is limited, and field operation space is also limited, to large generating set when carrying out desulfurization and being anticorrosion, need temporary chimney just large, in requisition for crane and working space just greatly, therefore, in such narrow space, lifting operation is realized just very difficult.In addition, the third scheme is owing to taking root in ground, below ground wants pre-buried concrete foundation, excavate prismatic ground with drum diameter, in order to ensure the resistance to overturning of temporary chimney, it is larger that concrete foundation is generally all done, then pre-embedded bolt, casting concrete, quantities is very large, and damages ground; And take ground fire-fighting traffic route once run into temporary chimney, impassable in the vehicle in front of temporary chimney dismounting.
In addition, no matter adopt which kind of scheme above-mentioned, its shell portion is all fixed integral barrel, and needs field fabrication.Because the diameter of temporary chimney cylindrical portions determines according to flue gas flow rate and flow, generally all comparatively large, for avoiding transportation clearance to transfinite, being all bend with steel plate at the scene, being welded, which adds construction period.In addition, this fixed temporary chimney is all make for single engineering design, single use, and this just unavoidably causes the wasting of resources.
In sum, the fixed temporary 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 single use, serious waste of resources; Work progress needs larger installing space and large lifting equipment, less economical; Comparatively large to ground failure, affect vehicle pass-through during chimney work.
For existing fixing temporary chimney Problems existing, develop a kind of novel temporary chimney imperative.
Summary of the invention
The technical problem to be solved in the present invention is that existing fixing temporary chimney basis fabrication amount is large, cost is high, long in time limit, serious waste of resources, less economical, comparatively large to ground failure, provide and only need simple basement process, only need lift by small crane, from the temporary chimney of a kind of detachable recycling of installing.
For achieving the above object, the present invention adopts following technical proposals: a kind of temporary chimney of detachable recycling, and comprise cylinder, horizontal flue and from rising system, horizontal flue is connected with clean flue, and the other end is connected with cylinder, and cylinder is fixed on from rising in system.
Described is fixed on supporting leg from the system of liter, and comprise door frame, stock and hoist engine from the system of liter, stock is connected with door frame, and hoist engine is arranged on the platform above door frame.
Described supporting leg has 4, is provided with saddle weight above top.
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, described every sheet standard film be standard paragraphs by etc. the fanning strip that divides of central angle alpha.Described every segment standard section comprises 4 standard films.Described every sheet standard film edge is provided with bolt hole.
Adopt the present invention after said structure to be all the convenient installation unit transported, therefore this chimney critical piece all can complete in factory process, and on-the-spot only needs assembles, dismantles and anticorrosive work.Such site operation cycle shortens greatly, improves efficiency.Supporting leg ballast formula is adopted 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 portion, and the construction period is short; Shell portion adopts segmentation chip, and can exchange, and can reuse, reduce the wasting of resources; Adopt from jacking installation system, easy installation and removal, and do not need by large-scale crane, require little to working space, especially at narrow and small place, more can show his superiority.
Accompanying drawing explanation
Fig. 1 is the temporary chimney structural representation that prior art is arranged on vacant lot, desulfurization zone.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the structural representation of supporting leg.
Fig. 4 is the A-A sectional 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.
Detailed description of the invention
As shown in Figure 2, the present invention includes cylinder 1, horizontal flue 2 and from rising 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 from rising in system 4.
As shown in Figure 5, described is fixed on supporting leg 6 from rising system 4, and comprise door frame 43, stock 41 and hoist engine 42 from rising system 4, stock 41 is connected with door frame 43, and hoist engine 42 is arranged on the platform above door frame 43.During installation, first door frame 43 and stock 41 are in place, then lifting hoist engine 42 is arranged on the platform above door frame 43.
As shown in Figure 3 and Figure 4, described supporting leg 6 has 4, is provided with saddle weight 61 above top.Add by 4 supporting legs the method that saddle weight 61 carries out counterweight temporary chimney to be fixed on the ground, supporting leg is a square box-structure, and the length and width size of supporting leg calculates according to the grounding pressure needed for engineering to be determined.Because supporting leg ground plane greatly reduces grounding pressure, thus reduce based process difficulty, do not need to do special basement process.Ballast is used to the stability against overturning ensureing complete machine, and it can adopt cast iron, concrete or sandstone material to make according to on-the-spot material context 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 also can be 2m, 2.5m, 3m.Described every segment standard section comprises at least 3 standard films 5, described every sheet standard film 5 are standard paragraphs by etc. the fanning strip that divides of central angle alpha.Described every segment standard section comprises 4 standard films 5.Described every sheet standard film 5 edge is provided with bolt hole 51.Adopt the cylindrical shell of segmentation and slicing formula, its principle first cylindrical shell 1 is divided into several standard paragraphs, each standard paragraphs is 90 ° by central angle alpha again and is divided into four, and section and section and between sheet and sheet, there is interchangeability, in advance these standard films 5 can be carried out at factory, after building site transported to by standard film 5, at the scene sheet and sheet are bolted composition standard paragraphs, between standard paragraphs, are bolted into cylindrical shell 1.The height of cylindrical shell can also be adjusted by the quantity increasing or reduce temporary chimney standard paragraphs according to the needs of building-site.Because cylindrical shell 1 is made into the standard paragraphs and standard film with interchangeability, after an engineering, temporary chimney is disassembled into single chip architecture shipping to next building site, after again doing preservative treatment, can again comes into operation.So just revolutionize the disposable temporary chimney way of single engineering of prior art.
The invention will be further described below:
According to engineering desulfurization zone deployment scenarios, temporary chimney is installed on the position of side, absorption tower, as shown in Figure 2, first the ground at supporting leg 6 place place is suitably processed, make it reach the earth bearing strength of 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 promoted is arranged on the platform above door frame 43.
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, high for temporary chimney is 50 meters, and remove outside door frame and stock height, this temporary 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 tower cylinder standard paragraphs at the scene, form 16 standard paragraphs altogether, then with flatcar 8, first standard paragraphs I is introduced below door frame, and be promoted in stock 41 with hoist engine 42, vacate door frame 43 lower space, again second standard paragraphs II flatcar 8 is introduced below door frame 43, starting hoist engine 42 puts on second standard paragraphs II to door frame 43 by the standard paragraphs I of first in stock 41, align rear bolt by the Flange joint of two standard paragraphs, then hoist engine hoisting point position is adjusted, firm fixing after start hoist engine again two standard paragraphs overall increased in stock 41, repeat above action, by the 3rd, 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 is reliably connected with cylinder entirety again, complete from the work of liter, temporary chimney has just installed.Then, be welded on clean flue 7 horizontal flue 2 one end, the other end and temporary chimney couple together, and so just achieve main chimney during anticorrosion transformation, unit still can normally run.
Claims (6)
1. the temporary chimney detachably reused, it is characterized in that: comprise cylinder (1), the horizontal flue (2) be connected with 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 from rising in system (4); Described cylinder (1) comprises at least 2 segment standard sections, has interchangeability between standard paragraphs, and the length of every segment standard section is 2-3m; Described is fixed on supporting leg (6) from rising system (4), door frame (43), stock (41) and hoist engine (42) is comprised from rising system (4), stock (41) is connected with door frame (43), and hoist engine (42) is arranged on the platform of door frame (43) top.
2. the temporary chimney of detachable recycling according to claim 1, is characterized in that: described supporting leg (6) has 4, is provided with saddle weight (61) above top.
3. the temporary chimney of detachable recycling according to claim 1, is characterized in that: the length of described every segment standard section is 2.5m.
4. the temporary chimney of detachable recycling according to claim 1, is characterized in that: described every segment standard section comprises at least 3 standard films (5), described every sheet standard film (5) be standard paragraphs by etc. the fanning strip that divides of central angle alpha.
5. the temporary chimney of detachable recycling according to claim 4, is characterized in that: described every segment standard section comprises 4 standard films (5).
6. the temporary chimney of detachable recycling according to claim 4, is characterized in that: described every sheet standard film (5) edge is provided with bolt hole (51).
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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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|---|---|---|---|
| CN201310437584.4A CN103591597B (en) | 2013-09-24 | 2013-09-24 | A kind of temporary chimney of detachable recycling |
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| CN103591597A CN103591597A (en) | 2014-02-19 |
| CN103591597B true CN103591597B (en) | 2016-01-20 |
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| CN201310437584.4A Active CN103591597B (en) | 2013-09-24 | 2013-09-24 | A kind of temporary chimney of detachable recycling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
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 |
-
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 |
|---|
| 湿法烟气脱硫装置临时烟囱方案选择及应用;朱国宇;《电力技术》;20101025;第19卷(第19期);79-80 * |
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