CN202938289U - Fuel-saving ignition device of circulating fluidized bed boiler - Google Patents
Fuel-saving ignition device of circulating fluidized bed boiler Download PDFInfo
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- CN202938289U CN202938289U CN 201220523370 CN201220523370U CN202938289U CN 202938289 U CN202938289 U CN 202938289U CN 201220523370 CN201220523370 CN 201220523370 CN 201220523370 U CN201220523370 U CN 201220523370U CN 202938289 U CN202938289 U CN 202938289U
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Abstract
The utility model discloses a fuel-saving ignition device of a circulating fluidized bed boiler, which mainly comprises a combustion air duct, a fuel-saving ignition pulverized coal burner, a high-intensity ignition oil burner, an air duct, a deslagging system and the like. The fuel-saving ignition pulverized coal burner comprises a ring-shaped dense-thin separating device, a strengthening combustion chamber and a gas film air window; and the power of the fuel-saving ignition pulverized coal burner can be adjusted according to the temperature and the flow rate of the fluidizing air. According to the utility model, a great amount of fuel oil can be saved during the ignition starting process in a cold boiler area, and the fuel saving ratio can reach 60-90%; the fuel-saving ignition device is suitable for the circulating fluidized bed boiler which is capable of using all kinds of inferior coal; the starting oil burning quantity is greatly reduced; the operation cost of a boiler is reduced; the operation reliability is ensured; the investment is small; the operating cost is low; and the adaptability is wide.
Description
Technical field
The utility model relates to a kind of fuel-economizing igniter, especially a kind of fuel-economizing igniter that is applicable under Fluidized Boiler Bed.
Background technology
Adopt tiny-oil ignition or plasma ignition constant pitch oil drop fire mode for pulverized-coal fired boiler at present, start at boiler cold-state, blowing out is combustion-supporting and low-load combustion-stabilizing during can save great amount of fuel oil.And CFBB is the startup stage of black furnace, all adopt bed lower air duct buner system and the bed burner apparatus that oils to heat fluidized wind and fire box temperature, after reaching the coal ignition temperature, fluidized wind stops a lower air duct burner, for example: the pulverized-coal fired boiler of a 300MW capacity, its lower air duct burner single Oil Gun of exerting oneself is 800～1300Kg/h, boiler cold-state starts once needs to expend the fuel oil of 20～30 tons, the annual fuel oil that needs consumption a large amount of that starts because of black furnace.
Summary of the invention
The purpose of this utility model is the weak point that overcomes in prior art, and a kind of simple in structure, CFBB fuel-economizing igniter that fuel consumption is little is provided.
For achieving the above object, CFBB fuel-economizing igniter of the present utility model, comprise the burning wind pipeline, the top of burning wind pipeline is connected with the surrounding air pipeline with elbow, the elbow of surrounding air pipeline is provided with the fuel saving lighting coal powder combustor that stretches in the burning wind pipeline, and fuel saving lighting coal powder combustor is provided with the igniting oil burner, and the bottom of burning wind pipeline is provided with slag-drip opening, one side lower part of burning wind pipeline is provided with hot air duct, and opposite side top is provided with time wind pipeline.
Beneficial effect: of the present utility model fuel saving lighting coal powder combustor is arranged in bed wind bypass next time air channel, for ease of deslagging, the bypass air channel is adopted and is arranged vertically mode design, fuel saving lighting coal powder combustor is arranged on the top in air channel, pulverized coal flame burns vertically downward, and after coal dust firing, lime-ash is discharged from the bottom; A former wind that enters the air channel is divided into two parts, a part is as surrounding air, a part is as a wind, part as surrounding air enters from the air channel import, provide coal dust firing needed oxygen amount, because fuel saving lighting coal powder combustor is internal combustion burner, surrounding air can also carry out fuel saving lighting coal powder combustor cooling, prevents the coal burner scaling loss; Enter the air channel as the part of a wind from the surrounding classification in air channel, be heated to the temperature that needs by the coal dust firing liberated heat.Hot blast enters burner hearth from the following outlet of the side in air channel.Lime-ash is discharged from the bottom in air channel, because the primary air pressure in the air channel, temperature are all higher, adopts the mode of hygrometric state deslagging to carry out deslagging bottom the burning wind pipeline.Utilize the fuel saving lighting coal powder combustor of internal combustion type to replace original lower air duct buner system as start-up burner, to reach fuel-efficient purpose.In CFBB black furnace starting ignition process, this device can be saved great amount of fuel oil, and its rate of economizing gasoline can reach 65 ~ 90%.A former wind that enters the air channel is divided into two parts, and a part is as surrounding air, and a part is as a wind.
Be adapted to use the CFBB of various atures of coal inferior, can greatly reduce the startup amount of fuel, reduce the operation cost of boiler, guarantee that reliable, small investment, operating cost are low, have adaptability widely.
Description of drawings
Fig. 1 is structural representation of the present utility model;
In figure: the 1-wind pipeline that burns, 2-fuel saving lighting coal powder combustor, the 3-oil burner of lighting a fire, 4-surrounding air pipeline, 5-air channel, 6-slag-drip opening, 7-hot air duct.
The specific embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is further described:
CFBB fuel-economizing igniter of the present utility model mainly is made of burning wind pipeline 1, fuel saving lighting coal powder combustor 2, igniting oil burner 3, surrounding air pipeline 4, inferior air channel 5, slag-drip opening 6, hot air duct 7.Described fuel saving lighting coal powder combustor 2 is provided with the power inverter that can regulate according to temperature and the flow of fluidized wind.Burning wind pipeline 1, the top of burning wind pipeline 1 is connected with the surrounding air pipeline 4 with elbow, the elbow of surrounding air pipeline 4 is provided with the fuel saving lighting coal powder combustor 2 that stretches into burning wind pipeline 1 porch, fuel saving lighting coal powder combustor 2 is provided with igniting oil burner 3, fuel saving lighting coal powder combustor 2 and igniting oil burner 3 are Purchased Item, belong to existing procucts.The bottom of burning wind pipeline 1 is provided with slag-drip opening 6, and a side lower part of burning wind pipeline 1 is provided with hot air duct 7, and opposite side top is provided with time wind pipeline 5.Coal dust burning in burning wind pipeline 1, the formation liquid slag after burning adopts the mode of hygrometric state deslagging to carry out deslagging bottom the burning wind pipeline.
Operation principle: according to the fluidized wind temperature of Coal rank needs, the difference of flow, the burning wind pipeline of design different tube diameters and the fuel saving lighting coal powder combustor 2 of different capacity.As long as with lower 2～4 of the bed of CFBB (because of the boiler capacity size different) in-duct burner is designed to the requirement that the fuel-economizing igniter just can satisfy the startup of boiler black furnace, thereby reaches the purpose that boiler opens furnace igniting fuel-economizing fuel oil.
Claims (1)
1. CFBB fuel-economizing igniter, it is characterized in that: it comprises burning wind pipeline (1), the top of burning wind pipeline (1) is connected with the surrounding air pipeline (4) with elbow, the elbow of surrounding air pipeline (4) be provided with stretch into burning wind pipeline (1) porch fuel saving lighting coal powder combustor (2), fuel saving lighting coal powder combustor (2) is provided with igniting oil burner (3), the bottom of burning wind pipeline (1) is provided with slag-drip opening (6), one side lower part of burning wind pipeline (1) is provided with hot air duct (7), opposite side top is provided with time wind pipeline (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523370 CN202938289U (en) | 2012-10-15 | 2012-10-15 | Fuel-saving ignition device of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523370 CN202938289U (en) | 2012-10-15 | 2012-10-15 | Fuel-saving ignition device of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202938289U true CN202938289U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220523370 Expired - Lifetime CN202938289U (en) | 2012-10-15 | 2012-10-15 | Fuel-saving ignition device of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202938289U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878938A (en) * | 2019-11-07 | 2020-03-13 | 北方华锦化学工业股份有限公司 | Circulating fluidized bed combustor system cooled by primary hot air |
| CN111895391A (en) * | 2020-07-17 | 2020-11-06 | 东方电气集团东方锅炉股份有限公司 | Operation regulation and control method for preventing hearth from coking after BT (BT) of supercritical circulating fluidized bed boiler |
| CN115711407A (en) * | 2022-11-08 | 2023-02-24 | 烟台龙源电力技术股份有限公司 | Control method of plasma ignition system |
-
2012
- 2012-10-15 CN CN 201220523370 patent/CN202938289U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878938A (en) * | 2019-11-07 | 2020-03-13 | 北方华锦化学工业股份有限公司 | Circulating fluidized bed combustor system cooled by primary hot air |
| CN111895391A (en) * | 2020-07-17 | 2020-11-06 | 东方电气集团东方锅炉股份有限公司 | Operation regulation and control method for preventing hearth from coking after BT (BT) of supercritical circulating fluidized bed boiler |
| CN111895391B (en) * | 2020-07-17 | 2022-11-01 | 东方电气集团东方锅炉股份有限公司 | Operation regulation and control method for preventing hearth from coking after BT (BT) of supercritical circulating fluidized bed boiler |
| CN115711407A (en) * | 2022-11-08 | 2023-02-24 | 烟台龙源电力技术股份有限公司 | Control method of plasma ignition system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee after: XUZHOU KERONG ENVIRONMENTAL RESOURCES Co.,Ltd. Address before: 221004 No. 12 Yang Shan Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: XUZHOU COMBUSTION CONTROL TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130515 |
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| CX01 | Expiry of patent term |