CN2886352Y - Oilless combustion-supporting ultra-low load operating burner for coal powder boiler - Google Patents
Oilless combustion-supporting ultra-low load operating burner for coal powder boiler Download PDFInfo
- Publication number
- CN2886352Y CN2886352Y CN 200620089033 CN200620089033U CN2886352Y CN 2886352 Y CN2886352 Y CN 2886352Y CN 200620089033 CN200620089033 CN 200620089033 CN 200620089033 U CN200620089033 U CN 200620089033U CN 2886352 Y CN2886352 Y CN 2886352Y
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- coal
- pulverized
- burner
- igniter
- 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
Images
Abstract
The utility model relating to super low-load operation combustion train without oil supporting combustion for pulverized coal fired boiler comprises pulverized coal conduit, a pulverized coal concentrator, an igniter, a primary combustor, a secondary combustor, and a tertiary combustor, wherein the inlet of the pulverized coal conduit is communicated with the pulverized coal delivery conduit, the pulverized coal concentrator and the igniter are arranged in the pulverized coal conduit, the pulverized coal concentrator is positioned between the pulverized coal inlet conduit of the igniter and the inlet of the pulverized coal conduit, the pulverized coal carried by the wind once enters the pulverized coal inlet conduit of the igniter through the pulverized coal concentrator, the upper end of the igniter is provided with elevated temperature air inlet conduit, the other end of the pulverized coal inlet conduit of the igniter is sequentially communicated with the primary combustor, the secondary combustor, and the tertiary combustor. The utility model solves the existing problem that the prior pulverized boiler needs a plurality of fuel oil for ignition, supporting combustion, and stabilized combustion and has complex structure without the combustion train which has simple structure utilizing the elevated temperature air after heating to ignite the pulverized coal and achieve ignition, supporting combustion, and stabilized combustion.
Description
One, technical field: the utility model relates to the burner that uses on a kind of pulverized-coal fired boiler, and particularly a kind of nothing is oily, utilizes the burner of high temperature air igniting combustion supporting, underrun, 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, especially capital equipment more is absolutely necessary in some large-scale thermal power plants, how the igniting of pulverized-coal fired boiler, combustion-supporting, steady combustion are carried out with the mode of fuel oil, need 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 not have oily combustion-supporting ultra-low load operation burner, its purpose is to solve existing pulverized coal boiler ignition, combustion-supporting, steady combustion needs great amount of fuel oil, and its complex structure, and also utilize now the high temperature air that obtains after the heating carry out coal dust light realize lighting a fire, combustion-supporting, the steady problem that exists of combustion and aspects such as burner simple in structure.
2, technical scheme: the utility model is achieved through the following technical solutions:
A kind of pulverized-coal fired boiler does not have oily combustion-supporting ultra-low load operation burner, and it is characterized in that: this burner mainly is made of pulverized coal channel, pulverized coal concentrator, igniter, one-level burner, two stage burner and three grades of burners; The pulverized coal channel inlet is connected with the coal dust carrier pipe, be provided with pulverized coal concentrator and igniter in the pulverized coal channel, pulverized coal concentrator is located between the coal powder entrance pipe and pulverized coal channel inlet of igniter, the coal dust that wind carries is through the coal powder entrance pipe of pulverized coal concentrator inlet point firearm, the igniter upper end is provided with the high temperature air inlet tube, and the coal powder entrance pipe other end order of igniter is communicated with one-level burner, two stage burner and three grades of burners.
Pulverized coal concentrator is the convenient convergent tubular structure of collecting high concentration pulverized coal, itself and pulverized coal channel axial alignment.
The coal powder entrance pipe of igniter 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 induction 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 the one end is connected with the coal powder entrance pipe, is connected with the high temperature air inlet tube in the middle of the one-level burner.
Two stage burner is that a straight length is installed on three grades of burners, and with the pulverized coal channel axial alignment.
Three grades of burners are two-layer square tubular structure, and the secondary air channel that surrounding air and secondary wind are provided that is provided with the pulverized coal channel lower end between the two-layer rectangular tube is communicated with.
3, advantage and effect: by the enforcement of technical solutions of the utility model, can solve existing pulverized coal boiler ignition well, combustion-supporting, steady combustion needs great amount of fuel oil, and its complex structure, and also utilize now the high temperature air that obtains after the heating carry out coal dust light realize lighting a fire, combustion-supporting, the steady problem that exists of combustion and aspects such as burner simple in structure.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 one-level in the high temperature air start-up burner, secondary, three grades of burners because entering and the cooling effect of surrounding air to burner of high temperature air can prevent the wall coking of burners at different levels fully, have prolonged service life;
3, 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 does not have oily combustion-supporting ultra-low load operation burner, and this burner mainly is made of pulverized coal channel 1, pulverized coal concentrator 2, igniter 11, one-level burner 5, two stage burner 6 and three grades of burners 7; Pulverized coal channel 1 inlet is connected with coal dust carrier pipe 10, be provided with pulverized coal concentrator 2 and igniter 11 in the pulverized coal channel 1, pulverized coal concentrator 2 is located between the coal powder entrance pipe 3 and pulverized coal channel 1 inlet of igniter 11, pulverized coal concentrator 2 is the convenient convergent tubular structure of collecting high concentration pulverized coal, itself and pulverized coal channel axial alignment, the coal dust that wind carries during work is through the coal powder entrance pipe 3 of pulverized coal concentrator 2 inlet point firearms 11, the coal powder entrance pipe 3 of igniter 11 is a reducing pipe, it is communicated with one-level burner 5 by straight length, in order to import the high concentration pulverized coal of collecting by pulverized coal concentrator, igniter 11 upper ends are provided with high temperature air inlet tube 4, high temperature air inlet tube 4 is the straight tube sleeve structure, be provided with heat-insulation layer 9 between sleeve pipe, its lower end is connected with one-level burner 5, the upper end is connected with induction heater 12, for one-level burner 5 provides high temperature air, coal powder entrance pipe 3 other ends order and the one-level burner 5 of igniter 11, two stage burner 6 and three grades of burners 7 are communicated with, one-level burner 5 is the straight tube sleeve structure, be provided with heat-insulation layer 9 between the sleeve pipe, the one end is connected with coal powder entrance pipe 3, is connected with high temperature air inlet tube 4 in the middle of one-level burner 5; Two stage burner 6 is that a straight length is installed on three grades of burners 7, and with pulverized coal channel 1 axial alignment; Three grades of burners 7 are two-layer square tubular structure, are communicated with the secondary air channel 8 that provides secondary wind to use of pulverized coal channel 1 lower end between the two-layer rectangular tube.
Temperature when the high temperature air of sensed heater 12 heating arrives the one-level burner through high temperature air inlet tube 4 during the utility model work can reach about 1000 ℃, high concentration pulverized coal is through coal powder entrance pipe 3, 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 two stage burner 6 then, form the torch that energy is bigger, and instantaneous ignition enters the coal dust of three grades of burners 7, thereby realized one-level point secondary, the high temperature air multistep ignition overall process that secondary points is three grades.Also have hot-air to enter secondary air channel 8 in addition, form surrounding air and secondary wind,, coal dust is fully burnt for burning provides enough air quantity and oxygen amounts.
Claims (7)
1, a kind of pulverized-coal fired boiler does not have oily combustion-supporting ultra-low load operation burner, and it is characterized in that: this burner mainly is made of pulverized coal channel (1), pulverized coal concentrator (2), igniter (11), one-level burner (5), two stage burner (6) and three grades of burners (7); Pulverized coal channel (1) inlet is connected with coal dust carrier pipe (10), be provided with pulverized coal concentrator (2) and igniter (11) in the pulverized coal channel (1), pulverized coal concentrator (2) is located between the coal powder entrance pipe (3) and pulverized coal channel (1) inlet of igniter (11), the coal dust that wind carries is through the coal powder entrance pipe (3) of pulverized coal concentrator (2) inlet point firearm (11), igniter (11) upper end is provided with high temperature air inlet tube (4), coal powder entrance pipe (3) other end order and one-level burner (5) of igniter (11), two stage burner (6) and three grades of burners (7) are communicated with.
2, do not have oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler described in the claim 1, it is characterized in that: pulverized coal concentrator (2) is the convenient convergent tubular structure of collecting high concentration pulverized coal, itself and pulverized coal channel (1) axial alignment.
3, there is not oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler described in the claim 1, it is characterized in that: the coal powder entrance pipe (3) of igniter (11) is a reducing pipe, 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, there is not oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler described in the claim 1, it is characterized in that: high temperature air inlet tube (4) is the straight tube sleeve structure, be provided with heat-insulation layer (9) between sleeve pipe, its lower end is connected with one-level burner (5), the upper end is connected with induction heater (12), for one-level burner (5) provides high temperature air.
5, there is not oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler 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 (9) between the sleeve pipe, the one end is connected with coal powder entrance pipe (3), is connected with high temperature air inlet tube (4) in the middle of one-level burner (5).
6, do not have oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler described in the claim 1, it is characterized in that: two stage burner (6) is that a straight length is installed on three grades of burners (7), and with pulverized coal channel (1) axial alignment.
7, there is not oily combustion-supporting ultra-low load operation burner according to the pulverized-coal fired boiler described in the claim 1, it is characterized in that: three grades of burners (7) are two-layer square tubular structure, and the secondary air channel (8) that surrounding air and secondary wind are provided that is provided with pulverized coal channel (1) lower end between the two-layer rectangular tube is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089033 CN2886352Y (en) | 2006-01-20 | 2006-01-20 | Oilless combustion-supporting ultra-low load operating burner for coal powder boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620089033 CN2886352Y (en) | 2006-01-20 | 2006-01-20 | Oilless combustion-supporting ultra-low load operating burner for coal powder boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886352Y true CN2886352Y (en) | 2007-04-04 |
Family
ID=37961441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620089033 Expired - Fee Related CN2886352Y (en) | 2006-01-20 | 2006-01-20 | Oilless combustion-supporting ultra-low load operating burner for coal powder boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886352Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111912A1 (en) * | 2008-03-14 | 2009-09-17 | 烟台龙源电力技术股份有限公司 | A method of reducing nitrogen oxides of a pulverized coal boiler using inner combustion type burners |
| CN101865459A (en) * | 2010-06-11 | 2010-10-20 | 杭州电子科技大学 | Coking-proof multistage ignition combustion apparatus with self-adaption function |
| CN109751596A (en) * | 2019-02-17 | 2019-05-14 | 山西瓦特网联环能科技有限公司 | Heating in medium frequency steady-burning coal power combustor and application method |
-
2006
- 2006-01-20 CN CN 200620089033 patent/CN2886352Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009111912A1 (en) * | 2008-03-14 | 2009-09-17 | 烟台龙源电力技术股份有限公司 | A method of reducing nitrogen oxides of a pulverized coal boiler using inner combustion type burners |
| US10364981B2 (en) | 2008-03-14 | 2019-07-30 | Yantai Longyuan Power Technology Co., Ltd. | Method for decreasing nitrogen oxides of a pulverized coal boiler using burners of internal combustion type |
| CN101865459A (en) * | 2010-06-11 | 2010-10-20 | 杭州电子科技大学 | Coking-proof multistage ignition combustion apparatus with self-adaption function |
| CN101865459B (en) * | 2010-06-11 | 2011-11-16 | 杭州电子科技大学 | Coking-proof multistage ignition combustion apparatus with self-adaption function |
| CN109751596A (en) * | 2019-02-17 | 2019-05-14 | 山西瓦特网联环能科技有限公司 | Heating in medium frequency steady-burning coal power combustor and application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101556039B (en) | Oxygen-enriched burner | |
| CN1912460A (en) | Low NOx oil gun device heated by backheating | |
| CN1687641A (en) | Cold static ignition under meagre coal and tiny oil, and steady burning burner in ultra low load | |
| CN204420998U (en) | A kind of low NOx combustion apparatus from preheating and coal dust sectional combustion | |
| CN2886352Y (en) | Oilless combustion-supporting ultra-low load operating burner for coal powder boiler | |
| CN202082916U (en) | Oxygen oil-free ignition and combustion device | |
| CN201335376Y (en) | Tiny-oil ignition maintenance-free burner | |
| CN2874293Y (en) | Coal powder boiler high temperature air ignitor | |
| CN102506423B (en) | Method for assisting in igniting low-volatile coal in burning by adding oxygen | |
| CN204042871U (en) | The combustion system of the blue charcoal waste gas of a kind of blended burning of coal fired boiler | |
| CN1793737A (en) | Direct flow oil-saving burner faulty coal for combustion | |
| CN1752524A (en) | High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof | |
| CN203010604U (en) | Corrosion resistant duel fuel combustor | |
| CN202792085U (en) | Adjustable oxygenating energy-saving and combustion-supporting system | |
| CN101403495A (en) | Rotational flow ignition pulverized coal combustor | |
| CN201269523Y (en) | Micro-oil gasification oil gun igniting pulverized coal burner | |
| CN102788362A (en) | Adjustable oxygenation energy-saving combustion-supporting system | |
| CN200979158Y (en) | Fuel alcohol burner for power boiler | |
| CN201106844Y (en) | Horizontal darkandlight micro-oil firing pulverized coal burner | |
| CN202927882U (en) | Cold state ignition device for low-emission boiler | |
| CN201547766U (en) | Rotational flow ignition pulverized coal combustor | |
| CN2591434Y (en) | High-temperature air ignitor for pulverized-fuel boiler | |
| CN204084456U (en) | The micro oil ignition system of generating plant pulverized coal boiler cold state spark and low-load combustion-stabilizing | |
| CN2630658Y (en) | Microoil cold-ignition and superlow-load stable-burning combustor | |
| CN214701277U (en) | Petroleum heating device |
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 |