CN201680362U - Combined air distributing device of circulating fluidized bed boiler - Google Patents
Combined air distributing device of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN201680362U CN201680362U CN2010201474163U CN201020147416U CN201680362U CN 201680362 U CN201680362 U CN 201680362U CN 2010201474163 U CN2010201474163 U CN 2010201474163U CN 201020147416 U CN201020147416 U CN 201020147416U CN 201680362 U CN201680362 U CN 201680362U
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- air
- blast cap
- distributing plate
- distribution plate
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Abstract
The utility model discloses a combined air distributing device of a circulating fluidized bed boiler, which comprises an air distributing plate, slag blanking pipes and a plurality of air caps, wherein the slag blanking pipe and the air caps are mounted on the air distributing plate. The combined air distributing device is characterized in that the air caps mounted at the peripheral edge of the air distributing plate and on the surroundings of the slag blanking pipes are '7'-shaped, and all the air caps mounted between the peripheral edge of the air distributing plate and the surroundings of the slag blanking pipes are bell-jar-shaped. Each '7'-shaped air cap includes an air pipe and a single-hole air cap head, the air pipes are mounted on the air distributing plate, the single-hole air pipe heads mounted on the air pipes are provided with bent heads, and all air nozzles of the single-head air cap heads positioned at the peripheral edge of the air distributing plate point at the inner side of the air distributing plate. Each bell-jar-shaped air cap includes an air cap inner tube and an outer cover, each air cap inner tube mounted on the air distributing plate is provided with a plurality of air holes, and each outer cover mounted on the respective air cap inner tube is provided with a plurality of air holes. The combined air distributing device can prevent uneven air distribution, poor bed material fluidization, poor fluidity, partial oxygen deficit zone formation, insufficient combustion, coking and slag formation and the like, and guarantee safe and stable running of the boiler.
Description
Technical field
The utility model relates to a kind of combined type air-distribution device that is used for CFBB.
Background technology
The fluidisation of material relies on pressure fan and air-introduced machine and air-distribution device to realize in the CFBB; Existing air-distribution device comprises air distribution plate, is loaded on slag dropping tube and several blast caps on the air distribution plate, described blast cap or be the bell-jar blast cap, perhaps be " 7 " font blast cap, the bell-jar blast cap has a plurality of apertures in its outer cover upper edge circumferential arrangement, the even shape of its cloth wind is very good, but because the air quantity that single aperture is sent is limited, its disturbance is indifferent; " 7 " font blast cap is the single hole wind cap, and its tuyere bore is bigger, and about 20～30mm, its draft capacity is strong usually, and the purging ability is strong, and the wind of sending has stronger disturbance ability, but uniformity is relatively poor; During use, airborne one tunnel the hot blast after the heating of wind air preheater that comes out from primary air fan enters the isobaric air compartment of water-cooled of burner hearth bottom, make a materials flowization by the blast cap that is arranged on the air distribution plate, and formation makes progress by the Dual-Phrase Distribution of Gas olid of burner hearth, but because the bed surface of CFBB is bigger, the furnace depth direction is about 3 meters, reach tens to twenties meters and furnace chamber width is wide, as use the bell-jar blast cap, with regard to make in the air distribution plate edge and slag dropping tube around etc. the bigger place of resistance cloth wind inequality appears, the bed materials flowization is bad, mobile poor, the local anoxic zone that forms, it is insufficient to burn, easily produce coking, potential safety hazards such as slagging scorification influence the safe and stable operation of boiler; As using " 7 " font blast cap, similar phenomenons such as cloth wind inequality, bed materials flowization be bad then appear in the less place of the resistances such as central area of air distribution plate, influence the safe and stable operation of boiler equally.
The utility model content
The purpose of this utility model is the above-mentioned deficiency at prior art, a kind of combined type air-distribution device of CFBB is provided, it can prevent cloth wind inequality, the bed materials flowization is bad, flowability is poor, the part forms the anoxic zone, burning is insufficient, produce phenomenons such as coking, slagging scorification, the safe and stable operation of assurance boiler.
For achieving the above object, the combined type air-distribution device of CFBB of the present utility model, comprise air distribution plate, be loaded on slag dropping tube and several blast caps on the air distribution plate, the blast cap that it is characterized in that being loaded on around air distribution plate edge and the every slag dropping tube is " 7 " font blast cap, the blast cap that is loaded between above-mentioned two zones is the bell-jar blast cap, each " 7 " font blast cap comprises the airduct that is loaded on the air distribution plate, be loaded on the airduct and have the single hole blast cap head of elbow, the tuyere that is positioned at the single hole blast cap head of air distribution plate edge all points to the inboard of air distribution plate, and each bell-jar blast cap comprises the interior pipe of blast cap that is loaded on the air distribution plate and is provided with several wind holes, be loaded on and manage the outer cover of going up and being provided with several wind holes in the blast cap.
The utility model has adopted knockdown blast cap arrangement on air distribution plate, around air distribution plate, reach slag dropping tube arranged around bigbore " 7 " font blast cap, all the other bed surfaces are arranged the bell-jar blast cap of circumferential air distribution, the shape of flowing around both having solved is poor, the problem that fluidisation is bad, make that again whole bed surface cloth wind is more even, prevent bad, mobile poor, the phenomenons such as the part forms the anoxic zone, it is insufficient to burn, generation coking, slagging scorification of a materials flowization, guarantee the safe and stable operation of boiler;
As further improvement of the utility model, the tuyere center line of the single hole blast cap head around the described every slag dropping tube all points to slag dropping tube and becomes arranged tangential with slag dropping tube; Can strengthen the flowability of lime-ash, make deslagging more smooth and easy;
In sum, the utility model can prevent cloth wind inequality, the bed materials flowization is bad, flowability is poor, the part forms the anoxic zone, burning is insufficient, produce phenomenons such as coking, slagging scorification, the safe and stable operation of assurance boiler.
Description of drawings
Fig. 1 is for using the air compartment structural representation of the utility model embodiment.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the structure chart of " 7 " font blast cap among Fig. 1.
Fig. 4 is the structure chart of Fig. 1 middle bell jar formula blast cap.
Fig. 5 is the slag dropping tube and the structure chart of " 7 " font blast cap around it among Fig. 2.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
By Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the combined type air-distribution device of this CFBB, comprise air distribution plate 1, be loaded on slag dropping tube 2 and several blast caps on the air distribution plate 1, the blast cap that is loaded on around air distribution plate 1 edge and the every slag dropping tube 2 is " 7 " font blast cap 3, the blast cap that is loaded between above-mentioned two zones is bell-jar blast cap 4, each " 7 " font blast cap 3 comprises the airduct 5 that is loaded on the air distribution plate 1, be loaded on the airduct 5 and have the single hole blast cap head 6 of elbow by screw thread, the tuyere that is positioned at the single hole blast cap head 6 of air distribution plate 1 edge all points to the inboard of air distribution plate 1, and the tuyere center line of the single hole blast cap head 6 around the described every slag dropping tube 2 all points to slag dropping tube 2, and with 2 one-tenth arranged tangential of slag dropping tube; Each bell-jar blast cap 4 comprises and is loaded on the air distribution plate 1 and is provided with pipe 8 in the blast cap in several wind holes, is loaded in the blast cap on the pipe 8 and is provided with the outer cover 9 in several wind holes by screw thread.
The utility model has adopted knockdown blast cap arrangement on air distribution plate 1, around air distribution plate 1, reach slag dropping tube 2 arranged around bigbore " 7 " font blast cap, all the other bed surfaces are arranged the bell-jar blast cap of circumferential air distribution, the shape of flowing around both having solved is poor, the problem that fluidisation is bad, make that again whole bed surface cloth wind is more even, prevent bad, mobile poor, the phenomenons such as the part forms the anoxic zone, it is insufficient to burn, generation coking, slagging scorification of a materials flowization, guarantee the safe and stable operation of boiler.
Claims (2)
1. the combined type air-distribution device of a CFBB, comprise air distribution plate, be loaded on slag dropping tube and several blast caps on the air distribution plate, the blast cap that it is characterized in that being loaded on around air distribution plate edge and the every slag dropping tube is " 7 " font blast cap, the blast cap that is loaded between above-mentioned two zones is the bell-jar blast cap, each " 7 " font blast cap comprises the airduct that is loaded on the air distribution plate, be loaded on the airduct and have the single hole blast cap head of elbow, the tuyere that is positioned at the single hole blast cap head of air distribution plate edge all points to the inboard of air distribution plate, and each bell-jar blast cap comprises the interior pipe of blast cap that is loaded on the air distribution plate and is provided with several wind holes, be loaded on and manage the outer cover of going up and being provided with several wind holes in the blast cap.
2. the combined type air-distribution device of CFBB as claimed in claim 1 is characterized in that the tuyere center line of described every slag dropping tube single hole blast cap head on every side all points to slag dropping tube and becomes arranged tangential with slag dropping tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201474163U CN201680362U (en) | 2010-03-31 | 2010-03-31 | Combined air distributing device of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201474163U CN201680362U (en) | 2010-03-31 | 2010-03-31 | Combined air distributing device of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680362U true CN201680362U (en) | 2010-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201474163U Expired - Lifetime CN201680362U (en) | 2010-03-31 | 2010-03-31 | Combined air distributing device of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN201680362U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607020A (en) * | 2011-01-18 | 2012-07-25 | 美特索电力公司 | Boiler grate and boiler |
| CN103423739A (en) * | 2013-07-30 | 2013-12-04 | 中国华能集团清洁能源技术研究院有限公司 | Abrasion proof slag-leakage resistant wind cap with combined core tube |
| CN103574597A (en) * | 2013-11-21 | 2014-02-12 | 上海锅炉厂有限公司 | Water cooling, slag discharging and air distributing device for circulating fluidized bed boiler |
| CN104390218A (en) * | 2014-12-12 | 2015-03-04 | 华西能源工业股份有限公司 | Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler |
| CN106439799A (en) * | 2016-04-12 | 2017-02-22 | 无锡华光锅炉股份有限公司 | Air distribution structure of circulating fluidized bed boiler |
| CN107013904A (en) * | 2017-04-14 | 2017-08-04 | 中国石油化工股份有限公司 | A kind of CFBB A types blast cap and its manufacture method |
-
2010
- 2010-03-31 CN CN2010201474163U patent/CN201680362U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607020A (en) * | 2011-01-18 | 2012-07-25 | 美特索电力公司 | Boiler grate and boiler |
| CN102607020B (en) * | 2011-01-18 | 2016-05-04 | 维美德技术有限公司 | boiler grate and boiler |
| CN103423739A (en) * | 2013-07-30 | 2013-12-04 | 中国华能集团清洁能源技术研究院有限公司 | Abrasion proof slag-leakage resistant wind cap with combined core tube |
| CN103423739B (en) * | 2013-07-30 | 2015-08-26 | 中国华能集团清洁能源技术研究院有限公司 | A kind of Wear-resistance leak-proof slag blast cap with combination core pipe |
| CN103574597A (en) * | 2013-11-21 | 2014-02-12 | 上海锅炉厂有限公司 | Water cooling, slag discharging and air distributing device for circulating fluidized bed boiler |
| CN103574597B (en) * | 2013-11-21 | 2016-02-03 | 上海锅炉厂有限公司 | A kind of circulating fluidized bed boiler water-cooling falls slag air-distribution device |
| CN104390218A (en) * | 2014-12-12 | 2015-03-04 | 华西能源工业股份有限公司 | Constant pressure wind chamber applied to CFB (circulating fluid bed) waste incineration boiler |
| CN106439799A (en) * | 2016-04-12 | 2017-02-22 | 无锡华光锅炉股份有限公司 | Air distribution structure of circulating fluidized bed boiler |
| CN107013904A (en) * | 2017-04-14 | 2017-08-04 | 中国石油化工股份有限公司 | A kind of CFBB A types blast cap and its manufacture method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
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| CX01 | Expiry of patent term |