CN103574597B - A kind of circulating fluidized bed boiler water-cooling falls slag air-distribution device - Google Patents
A kind of circulating fluidized bed boiler water-cooling falls slag air-distribution device Download PDFInfo
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- CN103574597B CN103574597B CN201310594954.5A CN201310594954A CN103574597B CN 103574597 B CN103574597 B CN 103574597B CN 201310594954 A CN201310594954 A CN 201310594954A CN 103574597 B CN103574597 B CN 103574597B
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Abstract
The invention provides a kind of circulating fluidized bed boiler water-cooling to fall slag air-distribution device, comprise the air distribution plate be located at after water-cooling wall front wall lower header and water-cooling wall between wall lower header, it is water cooled wind chamber front wall between water-cooling wall front wall lower header and water cooled wind chamber header, be wall after water cooled wind chamber between wall lower header and water cooled wind chamber header after water-cooling wall, after air distribution plate, water cooled wind chamber front wall, water cooled wind chamber, wall and water-cooling wall left and right side wall form water cooled wind chamber; Air distribution plate is provided with cinder hole, and in water cooled wind chamber, form water-cooled slag dropping tube.Device provided by the invention overcomes the deficiencies in the prior art, can effectively reduce air compartment temperature, and for furnace bottom igniting is provided convenience, the slag that falls is unobstructed, safety, and cloth wind is even, facilitates burner hearth blast to regulate simultaneously.
Description
Technical field
The present invention relates to a kind of circulating fluidized bed boiler water-cooling to fall slag air-distribution device, belong to recirculating fluidized bed (CFB) boiler technology field.
Background technology
CFB boiler because of its have that fuel tolerance is wide, efficiency of combustion is high, Load Regulation is large, can in bed direct desulfurization and realize low NOx drainage, fuel preparation system simple, be easy to realize the many merits such as ash comprehensive utilization, be widely adopted in process steam, heat supply, cogeneration of heat and power, station boiler.
Traditional CFB boiler adopts wind-cowl air-distribution device, and wind-cowl air-distribution device is made up of air compartment, air distribution plate, blast cap and protective layer, and this structure air compartment temperature is high; furnace bottom igniting is inconvenient; the security of deslagging can not get ensureing, and the cloth wind of air distribution plate is uneven, is not easy to regulate.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can effectively reduce air compartment temperature, and the slag that falls is unobstructed, safety, and cloth wind is even, and the circulating fluidized bed boiler water-cooling simultaneously facilitating burner hearth blast to regulate falls slag air-distribution device.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of circulating fluidized bed boiler water-cooling and falls slag air-distribution device, it is characterized in that: comprise the air distribution plate be located at after water-cooling wall front wall lower header and water-cooling wall between wall lower header, it is water cooled wind chamber front wall between water-cooling wall front wall lower header and water cooled wind chamber header, be wall after water cooled wind chamber between wall lower header and water cooled wind chamber header after water-cooling wall, after air distribution plate, water cooled wind chamber front wall, water cooled wind chamber, wall and water-cooling wall left and right side wall form water cooled wind chamber; Air distribution plate is provided with cinder hole, and in water cooled wind chamber, form water-cooled slag dropping tube.
Preferably, be provided with small bore tube and large diameter pipeline after described water cooled wind chamber front wall and water cooled wind chamber in wall, the large diameter pipeline in water cooled wind chamber front wall and the large diameter pipeline in wall after water cooled wind chamber are connected by pipe and on pipe, form water-cooled to fall cinder hole.
Preferably, described water-cooled fall cinder hole be pipe by drawing from large diameter pipeline in vertical direction curved go out multilayer elliptical aperture, welded seal steel plate between multilayer elliptical aperture, and at sealing steel plate inside pouring castable refractory, form described water-cooled slag dropping tube.
Preferably, described air distribution plate is made up of tube panel and blast cap, is mutually staggered in arrangement between blast cap, and adjacent blast cap half-twist is arranged; Blast cap is longitudinally arranged with horizontal waveform along tube panel, and trough is the cinder hole place that falls, and crest is the midline of adjacent two cinder holes that fall.
Preferably, the pipe connected between large diameter pipeline after large diameter pipeline in described water cooled wind chamber front wall and water cooled wind chamber in wall defines at least two water-cooled slag dropping tubes screens, described water cooled wind chamber is divided at least two little air compartments, and each little air compartment corresponds to a primary air piping.
Preferably, water-cooled slag dropping tube screen described in every sheet is equipped with balance pipe.
Preferably, described blast cap is arrow type blast cap or bell-type windshield, the air outlet of arrow type blast cap must aim at described in fall cinder hole.
Preferably, the large blast cap of described tube panel surrounding, described in fall the little blast cap of cinder hole surrounding.
Preferably, described primary air piping is front wall air intake or rear wall air intake, and during front wall air intake, described water cooled wind chamber lower header is arranged in front wall, and during rear wall air intake, described water cooled wind chamber lower header is arranged in rear wall.
Preferably, accident slag-discharge pipe is equipped with in described each described little air compartment.
The circulating fluidized bed boiler water-cooling provided by the invention slag air-distribution device that falls has following beneficial effect:
1, water cooled wind chamber front-back wall and water-cooling wall left and right side wall form water cooled wind chamber, can effectively reduce air compartment temperature, for furnace bottom igniting is provided convenience.
2, water-cooled fall cinder hole pipe ensure slag safety, and the waste heat of slag can be absorbed further.
3, blast cap waveform layout, blast cap air outlet are staggered in arrangement and ensure that slag is unobstructed and cloth wind is even.
4, water cooled wind chamber is divided into some little air compartments by partition wall, and each air compartment is furnished with an air inlet, facilitates burner hearth blast to regulate.
Device provided by the invention overcomes the deficiencies in the prior art, can effectively reduce air compartment temperature, and for furnace bottom igniting is provided convenience, the slag that falls is unobstructed, safety, and cloth wind is even, facilitates burner hearth blast to regulate simultaneously.
Accompanying drawing explanation
Fig. 1 is that circulating fluidized bed boiler water-cooling provided by the invention falls slag air-distribution device schematic diagram;
Fig. 2 is circulating fluidized bed boiler water-cooling Luo Zha air-distribution device partial side view provided by the invention;
Fig. 3 is that water-cooled falls the partial top view of cinder hole;
Fig. 4 is air distribution plate partial front elevation view;
Fig. 5 is air distribution plate partial top view;
Fig. 6 is air distribution plate partial side view;
Fig. 7 is water cooled wind chamber partial top view.
Detailed description of the invention
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is that circulating fluidized bed boiler water-cooling provided by the invention falls slag air-distribution device schematic diagram, the described circulating fluidized bed boiler water-cooling slag air-distribution device that falls comprises the air distribution plate 1 be arranged on after water-cooling wall front wall lower header 5 and water-cooling wall between wall lower header 7, be water cooled wind chamber front wall 2 between water-cooling wall front wall lower header 5 and water cooled wind chamber header 6, be wall 3 after water cooled wind chamber between wall lower header 7 and water cooled wind chamber header 6 after water-cooling wall, after air distribution plate 1, water cooled wind chamber front wall 2, water cooled wind chamber, wall 3 and water-cooling wall left and right side wall form water cooled wind chamber.Air distribution plate 1 has cinder hole, and in water cooled wind chamber, forms water-cooled slag dropping tube 4.
Composition graphs 2 and Fig. 3, except there is small bore tube 9, also there is some large diameter pipelines 8 in wall 3 after water cooled wind chamber front wall 2 with water cooled wind chamber, to draw corresponding pipe 16 on large diameter pipeline 8, the large diameter pipeline 8 in water cooled wind chamber front wall 2 and the large diameter pipeline 8 in wall after water cooled wind chamber 3 are connected by pipe 16 and on pipe 16, form water-cooled to fall cinder hole 15.The water-cooled cinder hole 15 that falls is jumped out by pipe 16 and is faded to circular port by square opening and dock to facilitate steel pipe, and at water-cooled slag dropping tube inside pouring castable refractory.
Composition graphs 4 ~ Fig. 6, air distribution plate 1 is made up of tube panel 10 and blast cap 11, and blast cap 11 is staggered in arrangement mutually, adjacent blast cap half-twist is arranged, ensures that air-out does not have blind area, and blast cap is longitudinally arranged with horizontal waveform along air distribution plate, trough is cinder hole 13 place that falls, and crest is center line 14 place of adjacent two cinder holes that fall.Blast cap 11 can be arrow type blast cap also can be bell-type windshield, but the air outlet of arrow type blast cap must aim at cinder hole, and the blast cap on air distribution plate has different size, air distribution plate surrounding use large blast cap, use little blast cap around the cinder hole that falls.
Composition graphs 7, define several water-cooled slag dropping tubes by the pipe 16 of drawing between large pipeline 8 to shield, water cooled wind chamber is divided into some little air compartments, each little air compartment corresponds to a primary air piping 17, each partition wall has some balance pipes for equalizing pressure, to improve air intake uniformity and controllability.Each little air compartment can each self-forming own module, and the primary air piping that each little air compartment is corresponding can be front wall air intake, and also can be rear wall air intake, during front wall air intake, water cooled wind chamber lower header 6 be arranged in front wall, and during rear wall air intake, water cooled wind chamber lower header 6 is arranged in rear wall.Accident slag-discharge pipe is provided with in each little air compartment.
CFB boiler water provided by the invention treats coldly slag air-distribution device, is made up of water cooled wind chamber, water-cooled slag dropping tube and air distribution plate.In water cooled wind chamber, form water-cooled slag dropping tube, arrange that blast cap ensures that slag is unobstructed by waveform, shielded by water-cooled slag dropping tube and be divided into some little air compartments also can form modularization air compartment.When blast cap uses, difference can be used to vary in size the blast cap of specification to ensure that in stove, fluidisation is even.The present invention effectively can ensure the security of CFB boiler slag removal, improve cloth wind uniformity and the modulability of air distribution plate, the bottom ignition device of relatively high power can be supported the use to reduce use oil mass during boiler start/ stop, the balance temperature difference, counterpressure, can improve goods fluid situation in stove.In addition assembling rate in the factory adopting air compartment modular structure greatly can improve system component, facilitates building site to install.
Claims (9)
1. a circulating fluidized bed boiler water-cooling falls slag air-distribution device, it is characterized in that: comprise the air distribution plate (1) be located at after water-cooling wall front wall lower header (5) and water-cooling wall between wall lower header (7), be water cooled wind chamber front wall (2) between water-cooling wall front wall lower header (5) and water cooled wind chamber header (6), be wall (3) after water cooled wind chamber between wall lower header (7) and water cooled wind chamber header (6) after water-cooling wall, air distribution plate (1), water cooled wind chamber front wall (2), after water cooled wind chamber, wall (3) and water-cooling wall left and right side wall form water cooled wind chamber, air distribution plate (1) is provided with cinder hole, and in water cooled wind chamber, form water-cooled slag dropping tube (4),
Be provided with small bore tube (9) and large diameter pipeline (8) in wall (3) after described water cooled wind chamber front wall (2) and water cooled wind chamber, the large diameter pipeline (8) in water cooled wind chamber front wall (2) and the large diameter pipeline (8) in wall after water cooled wind chamber (3) are connected by pipe (16) and go up formation water-cooled at pipe (16) to fall cinder hole (15).
2. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 1 falls slag air-distribution device, it is characterized in that: described water-cooled fall cinder hole (15) be pipe (16) by drawing from large diameter pipeline (8) in vertical direction curved go out multilayer elliptical aperture, welded seal steel plate between multilayer elliptical aperture, and at sealing steel plate inside pouring castable refractory, form described water-cooled slag dropping tube (4).
3. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 1 falls slag air-distribution device, it is characterized in that: described air distribution plate (1) is made up of tube panel (10) and blast cap (11), blast cap is staggered in arrangement between (11) mutually, and adjacent blast cap (11) half-twist is arranged; Blast cap (11) is longitudinally arranged with horizontal waveform along tube panel (10), and trough is the cinder hole that falls (13) place, and crest is center line (14) place of adjacent two cinder holes that fall (13).
4. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 1 falls slag air-distribution device, it is characterized in that: the pipe (16) connected between the large diameter pipeline (8) after the large diameter pipeline (8) in described water cooled wind chamber front wall (2) and water cooled wind chamber in wall (3) defines at least two water-cooled slag dropping tubes screens, described water cooled wind chamber is divided at least two little air compartments, and each little air compartment corresponds to a primary air piping (17).
5. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 4 falls slag air-distribution device, it is characterized in that: water-cooled slag dropping tube screen described in every sheet is equipped with balance pipe.
6. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 3 falls slag air-distribution device, it is characterized in that: described blast cap (11) is arrow type blast cap or bell-type windshield, the air outlet of arrow type blast cap must aim at described in fall cinder hole (13).
7. a kind of circulating fluidized bed boiler water-cooling as described in claim 3 or 6 falls slag air-distribution device, it is characterized in that: the large blast cap of described tube panel (10) surrounding, described in fall the little blast cap of cinder hole (13) surrounding.
8. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 4 falls slag air-distribution device, it is characterized in that: described primary air piping (17) is front wall air intake or rear wall air intake, during front wall air intake, described water cooled wind chamber header (6) is arranged in front wall, and during rear wall air intake, described water cooled wind chamber header (6) is arranged in rear wall.
9. a kind of circulating fluidized bed boiler water-cooling as claimed in claim 4 falls slag air-distribution device, it is characterized in that: be equipped with accident slag-discharge pipe in each described little air compartment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310594954.5A CN103574597B (en) | 2013-11-21 | 2013-11-21 | A kind of circulating fluidized bed boiler water-cooling falls slag air-distribution device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310594954.5A CN103574597B (en) | 2013-11-21 | 2013-11-21 | A kind of circulating fluidized bed boiler water-cooling falls slag air-distribution device |
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| CN103574597A CN103574597A (en) | 2014-02-12 |
| CN103574597B true CN103574597B (en) | 2016-02-03 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807032B (en) * | 2014-08-14 | 2017-04-19 | 江苏绿叶锅炉有限公司 | Positioning device of boiler hearth wind chamber |
| CN110836366A (en) * | 2019-12-16 | 2020-02-25 | 杭州锅炉集团股份有限公司 | Primary air step type wave air distribution and slag discharge device of circulating fluidized bed boiler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050519B1 (en) * | 1980-10-20 | 1986-12-30 | The British Petroleum Company p.l.c. | Fluidized bed combustor |
| CN101761923A (en) * | 2010-03-02 | 2010-06-30 | 上海锅炉厂有限公司 | Boiler wind distribution plate |
| CN201680362U (en) * | 2010-03-31 | 2010-12-22 | 华西能源工业股份有限公司 | Combined air distributing device of circulating fluidized bed boiler |
| CN201875696U (en) * | 2010-11-25 | 2011-06-22 | 郑州锅炉股份有限公司 | Wind chamber system for circulating fluidized bed boiler |
| CN203162937U (en) * | 2013-03-29 | 2013-08-28 | 武汉凯迪工程技术研究总院有限公司 | Water cooling air chamber of biomass circulating fluidized bed boiler |
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2013
- 2013-11-21 CN CN201310594954.5A patent/CN103574597B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050519B1 (en) * | 1980-10-20 | 1986-12-30 | The British Petroleum Company p.l.c. | Fluidized bed combustor |
| CN101761923A (en) * | 2010-03-02 | 2010-06-30 | 上海锅炉厂有限公司 | Boiler wind distribution plate |
| CN201680362U (en) * | 2010-03-31 | 2010-12-22 | 华西能源工业股份有限公司 | Combined air distributing device of circulating fluidized bed boiler |
| CN201875696U (en) * | 2010-11-25 | 2011-06-22 | 郑州锅炉股份有限公司 | Wind chamber system for circulating fluidized bed boiler |
| CN203162937U (en) * | 2013-03-29 | 2013-08-28 | 武汉凯迪工程技术研究总院有限公司 | Water cooling air chamber of biomass circulating fluidized bed boiler |
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