CN205717179U - The cloth wind structure of CFBB - Google Patents
The cloth wind structure of CFBB Download PDFInfo
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- CN205717179U CN205717179U CN201620298638.2U CN201620298638U CN205717179U CN 205717179 U CN205717179 U CN 205717179U CN 201620298638 U CN201620298638 U CN 201620298638U CN 205717179 U CN205717179 U CN 205717179U
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Abstract
This utility model relates to Sector of Cfb Boilers, it is specially the cloth wind structure of a kind of CFBB, it is capable of the even fluidizing of bed, improve efficiency of combustion, ensure the safe operation of boiler, it includes air distribution plate, the adapter running through described air distribution plate is installed on described air distribution plate, described adapter epimere is provided with blast cap, the perforate connected with described blast cap is had in described adapter, it is characterized in that, described air distribution plate is divided into central area and Bian Bi region, described Bian Bi region is around around described central area, the percent opening being positioned in the described adapter in described Bian Bi region is more than being positioned at the percent opening in the described adapter of described central area, it is provided with opening area in described central area, described opening area includes slag dropping tube, the adapter identical with described Bian Bi region it is disposed with around described slag dropping tube.
Description
Technical field
This utility model relates to Sector of Cfb Boilers, the cloth wind structure of a kind of CFBB.
Background technology
Combustion technology of circulating fluidized, as the coal combustion technology of a kind of advanced person, has the advantages such as fuel tolerance is good, efficiency is high, disposal of pollutants is few, has a wide range of applications in the field such as station boiler and Industrial Boiler.
Air-distribution device is one of critical component in Combustion Devices on Circulating Fluidized Bed Boiler, and its performance directly affects flowing, burning and the diabatic process in the fluidized status of fluidized-bed combustion boiler and combustor, and then has influence on the performance of fluidized-bed combustion boiler.
Wherein, streaming mode is: burning required air from bottom to top enters fuel bed by the air distribution plate of burner hearth bottom, and under suitable gas flow rate, bed particle forms suspended state and fluidizes, and blends acutely, and burning is fully.As can be seen here, the fluidized state how making bed reach high-quality is the key of whole combustion system.
In CFBB, air is provided and preheats to air preheater by blower fan, and the air of preheating enters burner hearth bottom air compartment, and enters burner hearth to participate in burning from bottom plenum through air-distribution device.Visible, the air-distribution device of CFBB is the core link making bed fluidize.
But, in recirculating fluidized bed often occurs burner hearth in actual motion, bed surface fluidizes uneven phenomenon, thus causes fluidization quality to be deteriorated, and bed temperature deviation is serious, largely effects on efficiency of combustion；The nowed forming in recirculating fluidized bed can not be realized when poor fluidization is serious the most at all, jeopardize the safe operation of boiler.
Through Circulating fluidized bed boiler design for many years, run and debug after research find, cause bed uneven main reason is that of fluidisation: in burner hearth, recycle stock is when fluidized bed combustion, the material of dilute-phase zone larger particles can fall into emulsion zone along with fluidizing to glide along the sidewall of burner hearth, thus burner hearth surrounding formed pile up, make burner hearth surrounding bed thickening, and the bed granule of central area is tiny, and thickness of bed layer is thin compared with surrounding.But traditional air-distribution device air-supply is uniform, and surrounding is identical with central area, it is provided that the air quantity of equivalent, thus result in whole bed fluidisation inequality.
Summary of the invention
In order to solve the problems referred to above, this utility model provides the cloth wind structure of a kind of CFBB, and it is capable of the even fluidizing of bed, improves efficiency of combustion, it is ensured that the safe operation of boiler.
Its technical scheme is such that the cloth wind structure of a kind of CFBB, it includes air distribution plate, the adapter running through described air distribution plate is installed on described air distribution plate, described adapter epimere is provided with blast cap, the perforate connected with described blast cap is had in described adapter, it is characterized in that, described air distribution plate is divided into central area and Bian Bi region, described Bian Bi region is around around described central area, the percent opening being positioned in the described adapter in described Bian Bi region is more than being positioned at the percent opening in the described adapter of described central area, it is provided with opening area in described central area, described opening area includes slag dropping tube, the adapter identical with described Bian Bi region it is disposed with around described slag dropping tube.
It is further characterized by, described central area is rectangular area, described Bian Bi region is around the rectangle frame region around described central area, and described opening area includes three, and each described opening area includes a described slag dropping tube and six described adapters being evenly arranged；
Described perforate is evenly arranged in the sidewall of described adapter；
It is positioned in the described adapter of described central area the perforate having two row's interlaced arrangement；
It is positioned at the perforate having three row's interlaced arrangement in the described adapter in described Bian Bi region；
Further be characterised by, top two rows of openings of the perforate of interlaced arrangement described in three rows be eight, foot one rows of openings be four.
After using structure of the present utility model, reach to provide the benefit that: on air distribution plate, divide central area and Bian Bi region, different percent openings is offered in zones of different, i.e. arrange, in the Bian Bi region that bed is thicker, the adapter that percent opening is bigger, and the adapter that percent opening is less is arranged in central area, to reach the purpose of subregion air-supply, at central area open interior region, material relative concentration is bigger simultaneously, the easily coking because slagging is not smooth, it is provided with slag dropping tube, and in order to deslagging is smooth and easy, goods fluid is uniform, uses the adapter that the percent opening consistent with limit wall is big；This is the actual motion feature by studying CFBB fluidized bed combustion, arranges targetedly, compared to traditional whole air distribution plate balanced ventilation, more can make bed fluidisation uniformly, and stable burning improves efficiency of combustion；Further, nozzle opening is arranged at the design of sidewall, also windage loss can preferably be reduced, it is beneficial to bed fluidisation, it is positioned in the described adapter of central area the perforate having two row's interlaced arrangement, is positioned in the described adapter in Bian Bi region the perforate having three row's interlaced arrangement, further increase Bian Bi region air output, the air output of central area is also reduced accordingly so that the region cloth wind that bed is thick increases under the basis that total blast volume is certain.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is that the A of Fig. 1 is to schematic diagram；
Fig. 3 is adapter enlarged diagram in Fig. 1；
Fig. 4 is the joint pipe structure schematic diagram being positioned at central area；
Fig. 5 be in Fig. 4 A-A to B-B to sectional view；
Fig. 6 is the joint pipe structure schematic diagram being positioned at Bian Bi region；
Fig. 7 be in Fig. 6 A-A to, B-B, C-C be to sectional view.
Detailed description of the invention
See Fig. 1, Fig. 2, shown in Fig. 3, a kind of cloth wind structure of CFBB, it includes air distribution plate 1, the adapter 2 running through air distribution plate is installed on air distribution plate 1, adapter 2 epimere is provided with blast cap 3, the perforate 4 connected with blast cap 3 is had in adapter 2, air distribution plate 1 is divided into region 6, central area 5 and Bian Bi, central area 5 is specially rectangular area, and Bian Bi region 6 is around the rectangle frame region around central area 5, and the percent opening being positioned in the adapter 2 in Bian Bi region 6 is more than being positioned at the percent opening in the adapter 2 of central area 5；Central area 5 and the division in Bian Bi region 6, can divide according to the factor such as combustion position, the type of furnace, the most voluntarily.Adapter 2 is connected by perforate 4 with blast cap 3, and blast cap 3 is provided with exhaust vent, and air enters each airduct 2 from bottom plenum and enters burner hearth by being arranged on the exhaust vent of the blast cap 3 each airduct 2；Being provided with three opening areas 7 in central area 5, opening area 7 includes a slag dropping tube 8, is evenly arranged six adapters 2 identical with Bian Bi region 6 around slag dropping tube 8.
See Fig. 3, shown in Fig. 4, Fig. 5, Fig. 6, the adapter 2 of central area, offer the perforate 4 of upper and lower two circle interlaced arrangement thereon along tube wall circumference, often enclose uniform 8；The adapter 2 in Bian Bi region, it has offered upper, middle and lower three along tube wall circumference and has enclosed the perforate 4 of interlaced arrangement, above 2 circles be uniform staggered with 8, uniform 4 of a bottom circle.Being so designed that, increase Bian Bi region air output, also reduce the air output of central area under the basis that total blast volume is certain accordingly so that the region cloth wind that bed is thick increases, the region cloth wind that bed is thin reduces, and is beneficial to fluidisation, improves efficiency of combustion.
The perforate 4 of adapter 2 is all on adapter sidewall, it is different from tradition adapter 2 top drilling, it is so designed that and has an advantage that, traditional top perforate windage loss is bigger, fluidisation and the windage size of bed are closely bound up, side-wall hole can effectively reduce the decay of windage, improves the fluidisation of windage, more conducively bed.
Claims (6)
1. the cloth wind structure of a CFBB, it includes air distribution plate, the adapter running through described air distribution plate is installed on described air distribution plate, described adapter epimere is provided with blast cap, the perforate connected with described blast cap is had in described adapter, it is characterized in that, described air distribution plate is divided into central area and Bian Bi region, described Bian Bi region is around around described central area, the percent opening being positioned in the described adapter in described Bian Bi region is more than being positioned at the percent opening in the described adapter of described central area, it is provided with opening area in described central area, described opening area includes slag dropping tube, the adapter identical with described Bian Bi region it is disposed with around described slag dropping tube.
The cloth wind structure of a kind of CFBB the most according to claim 1, it is characterized in that, described central area is rectangular area, described Bian Bi region is around the rectangle frame region around described central area, described opening area includes three, and each described opening area includes a described slag dropping tube and six described adapters being evenly arranged.
The cloth wind structure of a kind of CFBB the most according to claim 1, it is characterised in that described perforate is evenly arranged in the sidewall of described adapter.
The cloth wind structure of a kind of CFBB the most according to claim 1, it is characterised in that be positioned in the described adapter of described central area the perforate having two row's interlaced arrangement.
The cloth wind structure of a kind of CFBB the most according to claim 1, it is characterised in that be positioned at the perforate having three row's interlaced arrangement in the described adapter in described Bian Bi region.
The cloth wind structure of a kind of CFBB the most according to claim 5, it is characterised in that top two rows of openings of the perforate of interlaced arrangement described in three rows be eight, foot one rows of openings be four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620298638.2U CN205717179U (en) | 2016-04-12 | 2016-04-12 | The cloth wind structure of CFBB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620298638.2U CN205717179U (en) | 2016-04-12 | 2016-04-12 | The cloth wind structure of CFBB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717179U true CN205717179U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620298638.2U Active CN205717179U (en) | 2016-04-12 | 2016-04-12 | The cloth wind structure of CFBB |
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| Country | Link |
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| CN (1) | CN205717179U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107115823A (en) * | 2017-06-22 | 2017-09-01 | 周建南 | A kind of one-step-granulating method |
-
2016
- 2016-04-12 CN CN201620298638.2U patent/CN205717179U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107115823A (en) * | 2017-06-22 | 2017-09-01 | 周建南 | A kind of one-step-granulating method |
| CN107115823B (en) * | 2017-06-22 | 2023-12-12 | 济川(上海)医学科技有限公司 | One-step granulator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214028 No. 3 Chengnan Road, new Wu District, Jiangsu, Wuxi Patentee after: Wuxi Huaguang Environmental Protection Energy Group Co., Ltd Address before: 214028 No. 3 Chengnan Road, New District, Jiangsu, Wuxi Patentee before: WUXI HUAGUANG BOILER Co.,Ltd. |