CN2874293Y - Coal powder boiler high temperature air ignitor - Google Patents
Coal powder boiler high temperature air ignitor Download PDFInfo
- Publication number
- CN2874293Y CN2874293Y CN 200620089032 CN200620089032U CN2874293Y CN 2874293 Y CN2874293 Y CN 2874293Y CN 200620089032 CN200620089032 CN 200620089032 CN 200620089032 U CN200620089032 U CN 200620089032U CN 2874293 Y CN2874293 Y CN 2874293Y
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- CN
- China
- Prior art keywords
- temperature air
- high temperature
- coal
- communicated
- pulverized
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- 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
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Abstract
The utility model relates to a coal powder boiler high temperature air lighter comprising a coal powder entrance pipe, a high temperature air entrance pipe and a high temperature air heater. Top end of the high temperature air entrance pipe is communicated with the high temperature air heater. Bottom end of the high temperature air entrance pipe is communicated with a coal powder entrance pipe and a primary level burner inside the coal powder pipeline. Output end of the coal powder entrance pipe is communicated with the entrance of the primary level burner. The utility model has well solved the problem that massive fuel is required for ignition, combustion-supporting and combustion-stabilizing of the existing powder boiler with complex structure. Moreover, the utility model can utilize heated high temperature air in ignition, combustion-supporting and combustion-stabilizing of powder coal, which can not be achieved by other burning devices with simple structures.
Description
One, technical field: the utility model relates to the igniter that uses on a kind of pulverized-coal fired boiler, and is particularly a kind of without fuel oil, and the igniter that adopts the high temperature air mode to light a fire belongs to the boiler accessory machinery field.
Two, background technology: pulverized-coal fired boiler has a wide range of applications in a lot of industries, the capital equipment that especially more is absolutely necessary in some large-scale thermal power plants, and how the igniting of pulverized-coal fired boiler is carried out with the mode of fuel oil, needs to consume a large amount of fuel oils.It is the country of main energy sources with the coal that China is one, the oil and natural gas relative shortage.Along with rapid economy development, the demand of high-grade energy is constantly increased, the consumption of oil, natural gas is the situation of accelerated growth.Chinese Imported oil was 4,381 ten thousand tons in 1999, and 7,000 ten thousand tons of imports in 2000 need more than 140 hundred million dollars of hands over foreign exchange for this reason.Expecting the year two thousand twenty China will be up to more than 50% to the import volume of oil.In the face of the severe day by day oil supply and demand situation and the uncertainty of international oil price, the consumption that reduces oil has become the long term policy of China.In order to reduce the consumption of oil, must seek a kind of practicable non-oil ignition method and device.With the high temperature air igniting is a kind of selection of wisdom.China and foreign countries' patent documentation shows that adding hot-air with medium frequency induction heater has been a kind of mature technique, but is used for firing coal-dust also beyond example in boiler, must in good time this technological development be come out.
Three, summary of the invention:
1, goal of the invention: the utility model provides a kind of pulverized-coal fired boiler high temperature air igniter, its purpose needs great amount of fuel oil when being to solve existing pulverized coal boiler ignition, and its igniter structure complexity, and also utilize the high temperature air that obtains after the heating to carry out the problem that coal dust is lighted aspect existence such as realizing lighting a fire now.
2, technical scheme: the utility model is achieved through the following technical solutions:
A kind of pulverized-coal fired boiler high temperature air igniter is characterized in that: this igniter mainly is made of coal powder entrance pipe, high temperature air inlet tube, high-temperature air heater; The upper end of high temperature air inlet tube is communicated with high-temperature air heater, and coal powder entrance pipe and one-level burner in its lower end and the pulverized coal channel are communicated with, and the output of coal powder entrance pipe is communicated with the inlet of one-level burner.
High-temperature air heater is connected with heater water pump and heater blower fan.
The coal powder entrance pipe is a reducing pipe, and it is communicated with the one-level burner by straight length, in order to import the high concentration pulverized coal of being collected by pulverized coal concentrator.
The high temperature air inlet tube is the straight tube sleeve structure, is provided with heat-insulation layer between sleeve pipe, and its lower end is connected with the one-level burner, and the upper end is connected with high-temperature air heater, for the one-level burner provides high temperature air.
The one-level burner is the straight tube sleeve structure, is provided with heat-insulation layer between the sleeve pipe, and its arrival end is communicated with the coal powder entrance pipe, is communicated with the high temperature air inlet tube in the middle of the one-level burner.
3, advantage and effect: by the enforcement of technical solutions of the utility model, need great amount of fuel oil in the time of can solving existing pulverized coal boiler ignition well, and its igniter structure complexity, and also utilize the high temperature air that obtains after the heating to carry out the problem that coal dust is lighted aspect existence such as realizing lighting a fire now.The repeatedly fire trial of carrying out through the inventor shows, the utlity model has following advantage:
1, regardless of the quality of coal dust, be fully feasible with the high temperature air firing coal-dust.The utility model device can be lighted the coal-burning boiler that drives 200,000 kilowatts of units, 300,000 kilowatts of units and 600,000 kilowatts of units.Adopt the mode of little fire point big fire can also light the boiler of the bigger unit of drive, and the steady combustion can be used for the boiler at low load operation time and combustion-supporting, fuel oil can be saved in a large number;
2, the utility model apparatus structure is reasonable, and is easy to operate, safe and reliable, and operation under normal circumstances can maintain a long-term stability.
Four, description of drawings: accompanying drawing 1 is the utility model structural representation.
Five, the specific embodiment:
Embodiment 1:
As shown in Figure 1, the utility model pulverized-coal fired boiler high temperature air igniter, this igniter are arranged in the pulverized coal channel 4 of burner, and it mainly is made of coal powder entrance pipe 1, high temperature air inlet tube 2, high-temperature air heater 3; The upper end of high temperature air inlet tube 2 is communicated with high-temperature air heater 3, coal powder entrance pipe 1 and one-level burner 5 in its lower end and the pulverized coal channel 4 are communicated with, high temperature air inlet tube 2 is the straight tube sleeve structure, be provided with heat-insulation layer 8 between sleeve pipe, its lower end is connected with coal powder entrance pipe 1 with one-level burner 5, the upper end is communicated with high-temperature air heater 3, for one-level burner 5 provides high temperature air, the output of coal powder entrance pipe 1 directly inserts the inlet of one-level burner 5, coal powder entrance pipe 3 is a reducing pipe, it is communicated with one-level burner 5 by straight length, one-level burner 5 is the straight tube sleeve structure, be provided with heat-insulation layer 8 between the sleeve pipe, its arrival end is communicated with coal powder entrance pipe 1, is communicated with high temperature air inlet tube 2 in the middle of one-level burner 5.In order to import the high concentration pulverized coal of collecting by from pulverized coal concentrator; High-temperature air heater 3 is connected with heater water pump 6 and heater blower fan 7.
Temperature when the high temperature air that is heated by high-temperature air heater 3 during the utility model work arrives one-level burner 5 through high temperature air inlet tube 2 can reach about 1000 ℃, high concentration pulverized coal is through coal powder entrance pipe 1, in one-level burner 5, meet and mix with high temperature air, coal dust reaches ignition temperature, form the torch that energy is less, light the coal dust in the subordinate's burner that links to each other with one-level burner 5 then, form the torch that energy is bigger, and the coal dust in the instantaneous ignition subsequent combustion device, thereby realized one-level point secondary, the high temperature air multistep ignition overall process that secondary points is three grades.
Claims (5)
1, a kind of pulverized-coal fired boiler high temperature air igniter is characterized in that: this igniter mainly is made of coal powder entrance pipe (1), high temperature air inlet tube (2), high-temperature air heater (3); The upper end of high temperature air inlet tube (2) is communicated with high-temperature air heater (3), and coal powder entrance pipe (1) and one-level burner (5) in its lower end and the pulverized coal channel (4) are communicated with, and the output of coal powder entrance pipe (1) is communicated with the inlet of one-level burner (5).
2, according to the pulverized-coal fired boiler high temperature air igniter described in the claim 1, it is characterized in that: high-temperature air heater (3) is connected with heater water pump (6) and heater blower fan (7).
3, according to the pulverized-coal fired boiler high temperature air igniter described in the claim 1, it is characterized in that: coal powder entrance pipe (1) is a reducing pipe, and it is communicated with one-level burner (5) by straight length, in order to import the high concentration pulverized coal of being collected by pulverized coal concentrator.
4, according to the pulverized-coal fired boiler high temperature air igniter described in the claim 1, it is characterized in that: high temperature air inlet tube (2) is the straight tube sleeve structure, be provided with heat-insulation layer (8) between sleeve pipe, its lower end is connected with one-level burner (5), the upper end is connected with high-temperature air heater (3), for one-level burner (5) provides high temperature air.
5, according to the pulverized-coal fired boiler high temperature air igniter described in the claim 1, it is characterized in that: one-level burner (5) is the straight tube sleeve structure, be provided with heat-insulation layer (8) between the sleeve pipe, its arrival end is communicated with coal powder entrance pipe (1), is communicated with high temperature air inlet tube (2) in the middle of one-level burner (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089032 CN2874293Y (en) | 2006-01-20 | 2006-01-20 | Coal powder boiler high temperature air ignitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089032 CN2874293Y (en) | 2006-01-20 | 2006-01-20 | Coal powder boiler high temperature air ignitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2874293Y true CN2874293Y (en) | 2007-02-28 |
Family
ID=37780892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089032 Expired - Fee Related CN2874293Y (en) | 2006-01-20 | 2006-01-20 | Coal powder boiler high temperature air ignitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2874293Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343952A (en) * | 2018-03-29 | 2018-07-31 | 山西文龙中美环能科技股份有限公司 | A kind of self-starting coal burner |
| CN112503570A (en) * | 2020-11-23 | 2021-03-16 | 西安航天动力试验技术研究所 | High-temperature compressed air ignition device and ignition method for combustion type air heater |
-
2006
- 2006-01-20 CN CN 200620089032 patent/CN2874293Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343952A (en) * | 2018-03-29 | 2018-07-31 | 山西文龙中美环能科技股份有限公司 | A kind of self-starting coal burner |
| CN108343952B (en) * | 2018-03-29 | 2023-09-01 | 山西文龙中美环能科技股份有限公司 | Self-starting pulverized coal burner |
| CN112503570A (en) * | 2020-11-23 | 2021-03-16 | 西安航天动力试验技术研究所 | High-temperature compressed air ignition device and ignition method for combustion type air heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |