CN101403495A - Rotational flow ignition pulverized coal combustor - Google Patents
Rotational flow ignition pulverized coal combustor Download PDFInfo
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- CN101403495A CN101403495A CNA2008102095091A CN200810209509A CN101403495A CN 101403495 A CN101403495 A CN 101403495A CN A2008102095091 A CNA2008102095091 A CN A2008102095091A CN 200810209509 A CN200810209509 A CN 200810209509A CN 101403495 A CN101403495 A CN 101403495A
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- pulverized coal
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Abstract
The invention discloses a swirling ignition pulverized coal burner, which relates to a pulverized coal burner and aims at solving the problem of large oil consumption for cold clean criticality ignition starting and low-load stable burning of boilers of soft coal, wood coal, lean coal and anthracite coal. The input end of a second pulverized coal burning chamber is fixedly connected on the output end of a first pulverized coal burning chamber, an oil burner is fixedly connected on the outlet end of a central pipe, a stable burning cylinder is fixedly arranged on the outlet end of an installation sleeve which is arranged inside the central pipe, a first-class pulverized coal concentration ring is made into an integral with a primary air pipe and arranged at the middle part of the primary air pipe, a second-class pulverized coal concentration ring is arranged inside the outlet of the primary air pipe, the outlet end of a primary air elbow is connected with the inlet end of a pulverized coal concentrator, and the input end of the first pulverized coal burning chamber is connected with the output end of the pulverized coal concentrator. By the adoption of the burner, the oil consumption for starting boilers with cold clean criticality ignition once is 5-8 tons, thus saving a large amount of burning oil, reducing the fire-ignition energy needed by pulverized coal burning and meeting the demands of the starting, stopping and low-load stable burning of the boiler.
Description
Technical field
The present invention relates to a kind of coal burner.
Background technology
Along with the development of Chinese national economy, the demand of the energy is increased day by day, and petroleum resources are limited in China's proved reserves.At present, China will spend a large amount of foreign exchange Imported oils every year.Power industry is the rich and influential family of fuel consume, according to electric power statistics in recent years: the coal-fired unit of thermoelectricity accounts for 74.8% of total installation of generating capacity, with oil mass about 2,330,000 tons, account for total with 31.9% of oil mass, combustion-supporting when mainly being boiler startup ignition oil and underrun, stable combustion oil.In order to reduce consumption of petroleum resources, strengthen thermal power plant's fuel-economizing Research on New development, National Development and Reform Commission issued the documents last year, widelyd popularize plasma non-oil ignition technology and Gasifying Small Oil Gun technology.
The station boiler of China is to use bituminous coal, brown coal, meager coal and anthracite basically, needs higher temperature to light in the ignition of the boiler process, therefore needs to consume a large amount of fuel oils in ignition of the boiler with between low-load period.With a 300MW boiler unit is example, and boiler cold-state ignition trigger fuel consumption once is about 70 tons.Therefore it is extremely urgent to solve the big problem of coal-burning boiler ignition trigger and low-load combustion-stabilizing fuel consumption, and little oil gas small oil gun firing technique has been obtained successful Application on the coal-burning boiler unit.
Summary of the invention
The objective of the invention is provides a kind of rotational flow ignition pulverized coal combustor for solving bituminous coal, brown coal, meager coal and anthracite-fired boiler cold conditions ignition trigger and the big problem of low-load combustion-stabilizing fuel consumption.
The present invention comprises Small Gasified Oil Guns Burners, a windbend head, pulverized coal concentrator, a pulverized coal combustor, secondary pulverized coal combustor and spout, the input of secondary pulverized coal combustor is fixed on the output of a pulverized coal combustor, spout is fixed on the output of secondary pulverized coal combustor, Small Gasified Oil Guns Burners is by mounting sleeve, central tube, steady combustion tube and oil burner are formed, oil burner is fixed on the port of export of central tube, steady combustion tube is fixed on the port of export of mounting sleeve, mounting sleeve is arranged in the central tube, pulverized coal concentrator is by an airduct, one-level Pulverized Coal Concentration ring and secondary Pulverized Coal Concentration ring are formed, one-level Pulverized Coal Concentration ring and an airduct are made one, one-level Pulverized Coal Concentration ring is positioned at the middle part of an airduct, secondary Pulverized Coal Concentration ring is arranged in the outlet of an airduct, the port of export of a windbend head is connected with the entrance point of pulverized coal concentrator, and the input of a pulverized coal combustor is connected with the output of pulverized coal concentrator.
Advantage of the present invention is: one, utilizing the present invention to carry out boiler cold-state ignition trigger fuel consumption once is 5～8 tons, this shows and has saved a large amount of fuel oils, has reduced the required fire ignition energy of coal dust firing, has satisfied boiler and has opened, stops and the demand of low-load combustion-stabilizing.Two, coal adaptability of the present invention is wide, can satisfy to use bituminous coal, brown coal, meager coal and anthracitic station boiler and using Gasifying Small Oil Gun to carry out cold conditions ignition trigger, sliding stopping and the low-load combustion-stabilizing needs, and rate of economizing gasoline can reach more than 90%, and oil-saving effect is remarkable.
Description of drawings
Fig. 1 is the overall structure schematic diagram of rotational flow ignition pulverized coal combustor of the present invention.
The specific embodiment
The specific embodiment one: (referring to Fig. 1) present embodiment comprises Small Gasified Oil Guns Burners 1, a windbend head 2, pulverized coal concentrator 3, a pulverized coal combustor 4, secondary pulverized coal combustor 5 and spout 6, the input of secondary pulverized coal combustor 5 is fixed on the output of a pulverized coal combustor 4, spout 6 is fixed on the output of secondary pulverized coal combustor 5, Small Gasified Oil Guns Burners 1 is by mounting sleeve 1-1, central tube 1-2, steady combustion tube 1-3 and oil burner 1-4 form, oil burner 1-4 is fixed on the port of export of central tube 1-2, steady combustion tube 1-3 is fixed on the port of export of mounting sleeve 1-1, mounting sleeve 1-1 is arranged in the central tube 1-2, pulverized coal concentrator 3 is by an airduct 3-1, one-level Pulverized Coal Concentration ring 3-2 and secondary Pulverized Coal Concentration ring 3-3 form, one-level Pulverized Coal Concentration ring 3-2 and an airduct 3-1 make one, one-level Pulverized Coal Concentration ring 3-2 is positioned at the middle part of an airduct 3-1, secondary Pulverized Coal Concentration ring 3-3 is arranged in the outlet of an airduct 3-1, the port of export of a windbend head 2 is connected with the entrance point of pulverized coal concentrator 3, and the input of a pulverized coal combustor 4 is connected with the output of pulverized coal concentrator 3.Rotational flow ignition pulverized coal combustor is by axially advancing powder.Rotational flow ignition pulverized coal combustor is fit to be installed on the boiler unit of 200MW～1000MW, is used for the cold conditions ignition trigger of station boiler, sliding stopping and low-load combustion-stabilizing, can save nearly 90% fuel oil, and oil-saving effect is very remarkable.
The specific embodiment two: the difference of (referring to Fig. 1) present embodiment and the specific embodiment one is: increased Antiwear casing 7, Antiwear casing 7 is sleeved on the lateral wall of central tube 1-2.Antiwear casing 7 can prevent that coal dust from leaking central tube 1-2 mill.Other composition is identical with the specific embodiment one with annexation.
Operation principle: the thermal-flame that Small Gasified Oil Guns Burners 1 burning forms, the great localized hyperthermia of formation temperature gradient is fiery in a pulverized coal combustor 4 examines, the high temperature fire nuclear that forms with gasification, and combustion when entering a pulverized coal combustor 4 through the dense phase pulverized coal of the inspissation of Pulverized Coal Concentration ring mixes, the pulverized coal particle temperature sharply raises, the pulverizing of breaking, and discharge a large amount of fugitive constituents, simultaneously rapid fire burns, ablaze dense phase pulverized coal is mixed with the dilute phase coal dust when entering secondary pulverized coal combustor 5 and is lighted the dilute phase coal dust, realized the fractional combustion of coal dust, burning capacity is amplified step by step, and reaching a little fights quickens the purpose of coal dust firing.
The technical parameter of rotational flow ignition pulverized coal combustor:
Rotational flow ignition pulverized coal combustor is exerted oneself: 3～10t/h;
Wind wind-warm syndrome: air themperature in the factory building during the normal ignition.
Wind wind speed: a 20～28m/s.
Claims (2)
1, a kind of rotational flow ignition pulverized coal combustor, it comprises Small Gasified Oil Guns Burners (1), a windbend head (2), pulverized coal concentrator (3), a pulverized coal combustor (4), secondary pulverized coal combustor (5) and spout (6), the input of secondary pulverized coal combustor (5) is fixed on the output of a pulverized coal combustor (4), spout (6) is fixed on the output of secondary pulverized coal combustor (5), it is characterized in that: Small Gasified Oil Guns Burners (1) is by mounting sleeve (1-1), central tube (1-2), steady combustion tube (1-3) and oil burner (1-4) are formed, oil burner (1-4) is fixed on the port of export of central tube (1-2), steady combustion tube (1-3) is fixed on the port of export of mounting sleeve (1-1), mounting sleeve (1-1) is arranged in the central tube (1-2), pulverized coal concentrator (3) is by an airduct (3-1), one-level Pulverized Coal Concentration ring (3-2) and secondary Pulverized Coal Concentration ring (3-3) are formed, one-level Pulverized Coal Concentration ring (3-2) is made one with an airduct (3-1), one-level Pulverized Coal Concentration ring (3-2) is positioned at the middle part of an airduct (3-1), secondary Pulverized Coal Concentration ring (3-3) is arranged in the outlet of an airduct (3-1), the port of export of a windbend head (2) is connected with the entrance point of pulverized coal concentrator (3), and the input of a pulverized coal combustor (4) is connected with the output of pulverized coal concentrator (3).
2, rotational flow ignition pulverized coal combustor according to claim 1 is characterized in that: it also comprises Antiwear casing (7), and Antiwear casing (7) is sleeved on the lateral wall of central tube (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102095091A CN101403495A (en) | 2008-11-24 | 2008-11-24 | Rotational flow ignition pulverized coal combustor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102095091A CN101403495A (en) | 2008-11-24 | 2008-11-24 | Rotational flow ignition pulverized coal combustor |
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| Publication Number | Publication Date |
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| CN101403495A true CN101403495A (en) | 2009-04-08 |
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| CNA2008102095091A Pending CN101403495A (en) | 2008-11-24 | 2008-11-24 | Rotational flow ignition pulverized coal combustor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870385A (en) * | 2018-08-02 | 2018-11-23 | 贵州富燃环保科技有限公司 | A kind of fractional combustion coal burner surely fired certainly |
| CN109340745A (en) * | 2018-10-10 | 2019-02-15 | 武汉理工大学 | New and effective more neckings are classified whirlwind coal burner |
| CN110848673A (en) * | 2019-09-07 | 2020-02-28 | 辽宁大唐国沈东热电有限责任公司 | Low NOx combustor of coal fired boiler of thermal power plant |
| CN113390100A (en) * | 2021-05-13 | 2021-09-14 | 张明玉 | Candle seedling type burner |
-
2008
- 2008-11-24 CN CNA2008102095091A patent/CN101403495A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870385A (en) * | 2018-08-02 | 2018-11-23 | 贵州富燃环保科技有限公司 | A kind of fractional combustion coal burner surely fired certainly |
| CN108870385B (en) * | 2018-08-02 | 2023-12-22 | 贵州富燃环保科技有限公司 | Self-stabilizing combustion staged combustion pulverized coal burner |
| CN109340745A (en) * | 2018-10-10 | 2019-02-15 | 武汉理工大学 | New and effective more neckings are classified whirlwind coal burner |
| CN110848673A (en) * | 2019-09-07 | 2020-02-28 | 辽宁大唐国沈东热电有限责任公司 | Low NOx combustor of coal fired boiler of thermal power plant |
| CN113390100A (en) * | 2021-05-13 | 2021-09-14 | 张明玉 | Candle seedling type burner |
| CN113390100B (en) * | 2021-05-13 | 2022-07-08 | 张明玉 | Candle seedling type burner |
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Open date: 20090408 |