CN203797648U - Secondary air distribution structure for circulating fluidized bed boiler - Google Patents
Secondary air distribution structure for circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN203797648U CN203797648U CN201420157095.3U CN201420157095U CN203797648U CN 203797648 U CN203797648 U CN 203797648U CN 201420157095 U CN201420157095 U CN 201420157095U CN 203797648 U CN203797648 U CN 203797648U
- Authority
- CN
- China
- Prior art keywords
- secondary air
- air channel
- burner hearth
- hearth
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002459 sustained effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 239000000446 fuel Substances 0.000 abstract description 5
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Abstract
The utility model provides a secondary air distribution structure for a circulating fluidized bed boiler. Regardless of air pressure magnitude, front secondary air and rear secondary air can flow to each other, the phenomenon that secondary air flow carrying bed materials impact a hearth can be avoided, and the secondary air can be mixed into the bed materials favorably, so that the effects of disturbance and inhibition on the bed materials are quite obvious, more air can be supplied to the center of the hearth, and fuel can be burnt out favorably. The secondary air distribution structure for the circulating fluidized bed boiler comprises the hearth, front secondary air pipes and rear secondary air pipes, wherein the front secondary air pipes are positioned on the front hearth wall of the hearth; the rear secondary air pipes are positioned on the rear hearth wall of the hearth. The secondary air distribution structure for the circulating fluidized bed boiler is characterized in that the number of the front secondary air pipes is equal to that of the rear secondary air pipes; each rear secondary air pipe is arranged in a vertical surface on which the corresponding front secondary air pipe is located to form a pair of secondary air pipes; air outlets of each pair of secondary air pipes have the same size and face each other; the extension lines of the air outlets of the front secondary air pipe and the rear secondary air pipe in each pair of secondary air pipes are intersected inside the hearth.
Description
Technical field
The utility model relates to the technical field of structures of CFBB, is specially a kind of secondary air arrangement structure for CFBB.
Background technology
Circulating fluidized-bed boiler Combustion technology is a coal combustion technology growing up over nearly 20 years, and it has that fuel tolerance is wide, efficiency of combustion is high, discharged nitrous oxides is low, load regulation rate is large and the outstanding advantages such as Load Regulation is fast.
In prior art, CFBB sends into that the Secondary Air of burner hearth adopts be all front secondary air channel, rear secondary air channel successively before and after crossed configuration, as Fig. 1 and Fig. 2.Boiler is in running, for guaranteeing that Secondary Air has total enough kinetic energy to penetrate the bed material in stove, bed material is carried out to sufficient disturbance, operations staff often adopts higher Secondary Air pressure head to improve wind speed, but owing to cannot accurately determining the back pressure in air port, also cannot calculate and need the distinguished and admirable tip of great blast guarantee secondary just to arrive to approach the surface of opposite burner hearth not cause again the wearing and tearing of burner hearth, so the operations staff of boiler is caused to great puzzlement, blast is little, cannot play the perturbation action that play, blast is large, can cause the distinguished and admirable bed of carrying secretly of secondary to expect that the burner hearth that washes away opposite forms wearing and tearing, see Fig. 1, in Fig. 2, wash away region.
summary of the invention
For existing above-mentioned defect, the utility model provides a kind of secondary air arrangement structure for CFBB, it guarantees no matter front and back Secondary Air all can form and liquidate in the great situation of blast, can not cause Secondary Air air-flow to carry bed material secretly and wash away burner hearth, being conducive to Secondary Air sneaks in bed material, very obvious to the disturbance of bed material and inhibition, can make burner hearth center obtain more air, be conducive to the after-flame of fuel.
A kind of secondary air arrangement structure for CFBB, its technical scheme is such: it comprises burner hearth, front secondary air channel, rear secondary air channel, described front secondary air channel is positioned at the burner hearth front wall of described burner hearth, described rear secondary air channel is positioned at wall after the burner hearth of described burner hearth, it is characterized in that: described front secondary air channel, the quantity of rear secondary air channel equates, described in each, in the residing facade of front secondary air channel, correspondence is furnished with a described rear secondary air channel, form a pair of secondary air channel, the air outlet of every pair of secondary air channel in the same size, and arrange in opposite directions, every pair of described front secondary air channel, the extended line of the air outlet of rear secondary air channel meets at the inside of described burner hearth.
It is further characterized in that: the extended line of the air outlet of the every pair of described front secondary air channel, rear secondary air channel meets at the inside center position of described burner hearth, and described inside center position is specially the equidistant burner hearth interior location of wall after described burner hearth front wall apart from sustained height, burner hearth.
Adopt after structure of the present utility model, because correspondence in the residing facade of front secondary air channel described in each is furnished with a described rear secondary air channel, form a pair of secondary air channel, the air outlet of every pair of secondary air channel in the same size, and arrange in opposite directions, every pair of described front secondary air channel, the extended line of the air outlet of rear secondary air channel meets at the inside of described burner hearth, before it makes, no matter rear Secondary Air all can form and liquidate in the great situation of blast, can not cause Secondary Air air-flow to carry bed material secretly and wash away burner hearth, " blast " effect that forms on the contrary the air-flow group that liquidates after collision owing to liquidating is more conducive to Secondary Air and sneaks in bed material, very obvious to the disturbance of bed material and inhibition, can make burner hearth center obtain more air, the after-flame that is conducive to fuel.
Accompanying drawing explanation
Fig. 1 is the Secondary Air structural configuration front view schematic diagram of existing recirculating fluidized bed;
Fig. 2 is the top view structural representation of Fig. 1;
The Secondary Air structural configuration front view schematic diagram of Fig. 3 recirculating fluidized bed of the present utility model;
Fig. 4 is the top view structural representation of Fig. 3.
The specific embodiment
See Fig. 3～Fig. 4, it comprises burner hearth 1, front secondary air channel 2, rear secondary air channel 3, front secondary air channel 2 is positioned at the burner hearth front wall 4 of burner hearth 1, rear secondary air channel 3 is positioned at wall 5 after the burner hearth of burner hearth 1, front secondary air channel 2, the quantity of rear secondary air channel 3 equates, secondary air channel 3 after correspondence is furnished with one in the residing facade of secondary air channel 2 before each, form a pair of secondary air channel, the air outlet of every pair of secondary air channel in the same size, and arrange in opposite directions, before every pair, secondary air channel 2, the extended line of the air outlet of rear secondary air channel 3 meets at the inside center position of burner hearth 1, inside center position is specially the burner hearth front wall 4 apart from sustained height, the interior location of the equidistant burner hearth 1 of wall 5 after burner hearth.During normal air-out, forward and backward Secondary Air forms in the inside of burner hearth 1 the air-flow group 6 that liquidates, can not cause Secondary Air air-flow to carry bed material secretly and wash away burner hearth, " blast " effect that forms on the contrary the air-flow group 6 that liquidates after collision owing to liquidating is more conducive to Secondary Air and sneaks in bed material, very obvious to the disturbance of bed material and inhibition, can make the center of burner hearth 1 obtain more air, be conducive to the after-flame of fuel.In figure, arrow is gas flow direction.
Claims (2)
1. the secondary air arrangement structure for CFBB, it comprises burner hearth, front secondary air channel, rear secondary air channel, described front secondary air channel is positioned at the burner hearth front wall of described burner hearth, described rear secondary air channel is positioned at wall after the burner hearth of described burner hearth, it is characterized in that: described front secondary air channel, the quantity of rear secondary air channel equates, described in each, in the residing facade of front secondary air channel, correspondence is furnished with a described rear secondary air channel, form a pair of secondary air channel, the air outlet of every pair of secondary air channel in the same size, and arrange in opposite directions, every pair of described front secondary air channel, the extended line of the air outlet of rear secondary air channel meets at the inside of described burner hearth.
2. a kind of secondary air arrangement structure for CFBB according to claim 1, it is characterized in that: the extended line of the air outlet of the every pair of described front secondary air channel, rear secondary air channel meets at the inside center position of described burner hearth, described inside center position is specially the equidistant burner hearth interior location of wall after described burner hearth front wall apart from sustained height, burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157095.3U CN203797648U (en) | 2014-04-02 | 2014-04-02 | Secondary air distribution structure for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420157095.3U CN203797648U (en) | 2014-04-02 | 2014-04-02 | Secondary air distribution structure for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797648U true CN203797648U (en) | 2014-08-27 |
Family
ID=51379856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420157095.3U Expired - Fee Related CN203797648U (en) | 2014-04-02 | 2014-04-02 | Secondary air distribution structure for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939892A (en) * | 2014-04-02 | 2014-07-23 | 无锡华光锅炉股份有限公司 | Secondary air distribution structure for circulating fluidized bed boiler |
-
2014
- 2014-04-02 CN CN201420157095.3U patent/CN203797648U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939892A (en) * | 2014-04-02 | 2014-07-23 | 无锡华光锅炉股份有限公司 | Secondary air distribution structure for circulating fluidized bed boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101832548B (en) | Method for arch single-stage injection fractional combustion and W flame boiler for realizing method | |
| CN101832549A (en) | Multi-ejection grading combustion method and W flame boiler device for realizing same | |
| CN207179641U (en) | A kind of boiler of the adherent wind of side wall | |
| CN101699166B (en) | Bottom air spout set of tangentially-fired coal-burning boiler | |
| CN203797648U (en) | Secondary air distribution structure for circulating fluidized bed boiler | |
| CN101818893A (en) | W-flame boiler with boundary-secondary wind jet | |
| CN204100231U (en) | A kind of CFB boiler | |
| CN103939892A (en) | Secondary air distribution structure for circulating fluidized bed boiler | |
| CN203744240U (en) | Material supplementing type soot blower of circulating fluidized bed boiler | |
| CN103225805B (en) | Boiler apparatus for preventing high temperature corrosion of water screen and method therefor | |
| CN201391880Y (en) | Soot formation loosening device for horizontal flue of straw boiler | |
| CN202328328U (en) | Biomass boiler | |
| CN202973071U (en) | High-low differential bed air distribution structure | |
| CN204176636U (en) | The wear-resisting accumulatingdust blow device of a kind of CFBB | |
| CN203571723U (en) | Circulating fluidized bed boiler | |
| CN201615487U (en) | Combined vertical dense-dilute low-NOx direct flow pulverized coal burner | |
| CN204544751U (en) | A kind of device for improving separator for coal mill separative efficiency | |
| CN203663674U (en) | Dry desulfurization spray nozzle | |
| CN205026656U (en) | Device for preventing separator level flue deposition | |
| CN202485206U (en) | Energy-saving air heating furnace | |
| CN204141572U (en) | Sow formula coal feeder | |
| CN202501490U (en) | Non-mechanical coal feeding device | |
| CN204730189U (en) | A kind of CFBB | |
| CN206556003U (en) | Fluidized-bed combustion boiler air-distribution device | |
| CN206546107U (en) | The cooling device of clinker in a kind of grate-cooler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |