Fuel gas swirling low-nitrogen burner of steam-injection boiler
A low-nitrogen burner and steam injection boiler technology, applied in gas fuel burners, burners, combustion methods, etc., can solve the problems of inability to reduce nitrogen oxide emissions, high maintenance costs, poor fuel applicability, etc., and achieve combustion Intense and thorough, compact, intense burning effect
Inactive Publication Date: 2016-04-27
南京创能电力科技开发有限公司
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Problems solved by technology
However, due to its internal mechanism and other reasons, the above-mentioned devices have certain limitations when applied to steam injection boilers.
Such as plasma burner: high primary investment, poor fuel applicability, high power consumption, short service life, complicated system and high maintenance cost
For example, burners in North America: imported burners, high initial investment, cannot reduce nitrogen oxide emissions, and high maintenance costs
Such as double strong burner: the system is complicated, the fuel consumption is large, and the investment is high
[0003] In summary, this type of technology is suitable for large-capacity and high-parameter power industry boilers or coal-fired boilers, and there are great limitations in the use of steam injection boilers
Method used
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[0014] The following combines the manual with the figure 1 The gas swirl low-nitrogen burner of the steam injection boiler with gas rotary combustion is further explained.
[0015] The gas swirl low-nitrogen burner of the steam injection boiler with gas rotary combustion, the gas swirl low-nitrogen burner is in the following order according to the air flow direction: air inlet, main air chamber 16, damper 13, central air chamber 2, secondary air Chamber 5, perimeter air chamber 7, secondary air spout 8, perimeter wind spout 9. Wherein, the central wind flows through the central air chamber 2, the central air pipe 14, and the burner 11 in sequence. The secondary air flows through the secondary air chamber 5 , the secondary air swirl sheet 6 , the secondary air chamber 15 and the secondary air nozzle 8 in sequence. The perimeter wind flows through the perimeter wind chamber 7, the perimeter wind chamber 12, and the perimeter wind nozzle 9 in sequence. The ignition gun 1, the ...
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The invention discloses a fuel gas swirling low-nitrogen burner of a steam-injection boiler. Such a crude oil swirling low-nitrogen burner comprises, in an air flow direction, an air inlet, a control damper, a central air chamber, secondary air chambers, peripheral air chambers, a secondary air nozzle and a peripheral air nozzle in order. Central air orderly flows through the central air chamber, a central air duct and a flame stabilizer. Secondary air orderly flows through one secondary air chamber, a secondary air swirling plate, the other secondary air chamber and the secondary air nozzle. Peripheral air orderly flows through one peripheral air chamber, the other peripheral air chamber and the peripheral air nozzle. The burner provided by the present invention organizes air for combustion via reasonable staging to realize staged combustion of the crude oil, and therefore, the generation of nitrogen oxides may be effectively reduced and nitrogen emissions may be reduced; in addition, the burner has the advantages of simple system, easy maintenance, low maintenance cost and long service life.
Description
technical field [0001] The invention relates to a burner capable of realizing low-nitrogen combustion of a steam injection boiler. Background technique [0002] In July 2013, Shandong Province issued the "Comprehensive Emission Standards of Regional Air Pollutants in Shandong Province", which stipulated that by January 1, 2017, the emission standard of nitrogen oxides from oil-fired boilers should be 250mg / Nm 3 Within, by January 1, 2020, the nitrogen oxide emission standard for oil-fired boilers will be 200mg / Nm 3 within. However, because the existing gas injection furnace burners all use high excess air coefficient combustion, and their simple structure and single organization air, the nitrogen oxide emissions exceed the standard; improving the combustion efficiency of gas injection boilers and reducing nitrogen oxide emissions become gas injection A top priority for the boiler industry. In recent years, the power industry has made a lot of technical improvements to the...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F23D14/24F23D14/46
CPCF23D14/24F23D14/46F23D2900/21
Inventor 刘飞耿荐胡春雷苏林李宁建
Owner 南京创能电力科技开发有限公司