CN203068497U - Arrangement structure for mixed air for circulating fluidized bed ignition device - Google Patents
Arrangement structure for mixed air for circulating fluidized bed ignition device Download PDFInfo
- Publication number
- CN203068497U CN203068497U CN 201220660763 CN201220660763U CN203068497U CN 203068497 U CN203068497 U CN 203068497U CN 201220660763 CN201220660763 CN 201220660763 CN 201220660763 U CN201220660763 U CN 201220660763U CN 203068497 U CN203068497 U CN 203068497U
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- mixed
- air
- combustion chamber
- air channel
- arrangement structure
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Abstract
The utility model provides an arrangement structure for mixed air for a circulating fluidized bed ignition device. According to the arrangement structure, the swirling effect of primary mixed secondary air is kept, and a guide effect on hot flue gas can be produced, so that all the flow gas flows to a hearth, and then a furnace wall in the back of an ignition burner is prevented from being burnt and deformed. The arrangement structure comprises a water-cooled air chamber, wherein the water-cooled air chamber is communicated with a mixed air flue; the other end of the mixed air flue is communicated with a combustion chamber; a mixed secondary air device is sleeved on the connecting ring surface of the mixed air flue and the combustion chamber; secondary air pipes are uniformly distributed on the ring surface of the mixed secondary air device; the tail of the combustion chamber is connected with an ignition oil gun; and a primary combustion-supporting air inlet is formed between the combustion chamber and the ignition oil gun. The arrangement structure is characterized in that the secondary air pipes are arranged obliquely towards fixing points on the central axis of the mixed air flue.
Description
Technical field
The utility model relates to the technical field of CFBB, is specially the arrangement that a kind of recirculating fluidized bed igniter is mixed wind.
Background technology
The igniting of CFBB is a difficult point of boiler operatiopn, because the hot flue gas of ignition under bed is all earlier by beds, heat loss is little, thereby this method can save igniter fuel, and oil burner only needs 10 ~ 15% boiler outputs namely enough.
Existing ignition under bed apparatus structure, see Fig. 1, Fig. 2, it is arranged in parallel at furnace water cooling air compartment 1 rear side with the ignition under bed device, torch oil gun 4 required combustion airs are a wind 3, form about about 1300 ℃ hot flue gas behind air and the oil firing, hot flue gas fully mixes in wind mixed chamber by the cold air that rotates in mixing air channel 2, mix the back flue-gas temperature and evenly send into burner hearth through the blast cap that is arranged on the air distribution plate on the water cooled wind chamber 1 again for about 850 ℃, the bed material is heated to uniform temperature, throw coal again, the burning that the fuel that feeds continuously up to feeder can be stable.In order to make oil and wind that air distribution effect preferably be arranged, control mixes the flue-gas temperature in the air channel 2, guarantee that the bed material is subjected to the effect of gas radiation, shorten the duration of ignition as far as possible, the cold wind that the existing secondary air channel 7 that mixes overfire air device 5 blows out forms eddy flow, eddy flow can entrainment the oil gun root at portion of hot flue gas 6 rear portions to the combustion chamber, and makes start-up burner rear portion furnace wall burn red stain shape.
Summary of the invention
At the problems referred to above, the utility model provides a kind of recirculating fluidized bed igniter to mix the arrangement of wind, it keeps outside the cyclonic action of original mixing secondary wind, can also produce guide functions to hot flue gas, hot flue gas is all flowed to the burner hearth direction, avoided start-up burner rear portion furnace wall to burn red stain shape.
A kind of recirculating fluidized bed igniter is mixed the arrangement of wind, its technical scheme is such: it comprises water cooled wind chamber, described water cooled wind chamber is communicated with and mixes the air channel, the other end in described mixing air channel is communicated with the combustion chamber, described mixing air channel, the connection anchor ring of combustion chamber is set with the mixing overfire air device, be evenly equipped with secondary air channel on the described mixing overfire air device anchor ring, the afterbody of described combustion chamber is connected with torch oil gun, be provided with a combustion air import between described combustion chamber and the described torch oil gun, it is characterized in that: the fixing point inclined position of described secondary air channel on the central shaft in described mixing air channel arranged.
After adopting structure of the present utility model, because the fixing point inclined position of secondary air channel on the central shaft in described mixing air channel arranged, and secondary air channel is distributed in the anchor ring, the overfire air device that mix overfire air device and is set in the connection anchor ring that mixes air channel, combustion chamber, this structure is except the cyclonic action that keeps original mixing secondary wind, can also produce guide functions to hot flue gas, hot flue gas is all flowed to the burner hearth direction, avoided hot flue gas to enter the rear portion furnace wall of rear portion start-up burner, guaranteed that start-up burner rear portion furnace wall can not burn red stain shape.
Description of drawings
Fig. 1 is existing ignition under bed apparatus structure schematic diagram;
Fig. 2 is the secondary air channel arrangement schematic diagram of Fig. 1;
Fig. 3 is front view structural representation of the present utility model;
Fig. 4 is the secondary air channel arrangement schematic diagram of Fig. 3.
The specific embodiment
See Fig. 3, Fig. 4, it comprises water cooled wind chamber 1, water cooled wind chamber 1 is communicated with and mixes air channel 2, the other end that mixes air channel 2 is communicated with combustion chamber 6, the connection anchor ring that mixes air channel 2, combustion chamber 6 is set with and mixes overfire air device 5, mixes on overfire air device 5 anchor rings being evenly equipped with secondary air channel 7, and the fixing point A inclined position of secondary air channel 7 on the central shaft 8 that mixes air channel 2 arranged, the afterbody of combustion chamber 6 is connected with torch oil gun 4, is provided with a combustion air import 3 between combustion chamber 6 and the torch oil gun 4.
Claims (1)
1. a recirculating fluidized bed igniter is mixed the arrangement of wind, it comprises water cooled wind chamber, described water cooled wind chamber is communicated with and mixes the air channel, the other end in described mixing air channel is communicated with the combustion chamber, described mixing air channel, the connection anchor ring of combustion chamber is set with the mixing overfire air device, be evenly equipped with secondary air channel on the described mixing overfire air device anchor ring, the afterbody of described combustion chamber is connected with torch oil gun, be provided with a combustion air import between described combustion chamber and the described torch oil gun, it is characterized in that: the fixing point inclined position of described secondary air channel on the central shaft in described mixing air channel arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660763 CN203068497U (en) | 2012-12-05 | 2012-12-05 | Arrangement structure for mixed air for circulating fluidized bed ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660763 CN203068497U (en) | 2012-12-05 | 2012-12-05 | Arrangement structure for mixed air for circulating fluidized bed ignition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068497U true CN203068497U (en) | 2013-07-17 |
Family
ID=48767276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220660763 Expired - Lifetime CN203068497U (en) | 2012-12-05 | 2012-12-05 | Arrangement structure for mixed air for circulating fluidized bed ignition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068497U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944009A (en) * | 2012-12-05 | 2013-02-27 | 无锡华光锅炉股份有限公司 | Arrangement structure of mixing air of circulating fluid bed ignition device |
| CN104791779A (en) * | 2015-04-16 | 2015-07-22 | 无锡锡能锅炉有限公司 | Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler |
-
2012
- 2012-12-05 CN CN 201220660763 patent/CN203068497U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944009A (en) * | 2012-12-05 | 2013-02-27 | 无锡华光锅炉股份有限公司 | Arrangement structure of mixing air of circulating fluid bed ignition device |
| CN104791779A (en) * | 2015-04-16 | 2015-07-22 | 无锡锡能锅炉有限公司 | Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |