锅壳式燃油锅炉改燃生物质成型燃料的性能及烟管磨损分析
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摘要
生物质成型燃料具有成本低、环保等众多优点,改燃生物质成型燃料后,小型燃油锅炉性能及安全性将受到影响。结合实例,计算分析了改造后锅炉的效率、烟气特性以及烟管磨损程度。结果表明,锅炉效率有所下降,而烟气量、烟气流速都将增大;烟管磨损随烟气流速、飞灰细度及直径增大而加剧。但对于小型锅炉,由于负荷率较低、运行时间短,烟管磨损程度并不严重。
The biomass molding fuel has many advantages such as low cost and eco-friendly. The performance and safety of small boiler with oil as design fuel will be negatively affected using biomass molding fuel. Combined with an example,the boiler efficiency,flue gas properties,and abrasion of fire tubes were theoretically analyzed. The results show that the boiler efficiency decreases,the amount and velocity of flue gas increases when the oil-burning boiler using biomass molding fuel. The abrasion of fire tubes is aggravated with the increasing of the velocity of flue gas,the fineness and diameter of ash increase. For a smallscale boiler with low load and short running time,the abrasion is not very serious.
The biomass molding fuel has many advantages such as low cost and eco-friendly. The performance and safety of small boiler with oil as design fuel will be negatively affected using biomass molding fuel. Combined with an example,the boiler efficiency,flue gas properties,and abrasion of fire tubes were theoretically analyzed. The results show that the boiler efficiency decreases,the amount and velocity of flue gas increases when the oil-burning boiler using biomass molding fuel. The abrasion of fire tubes is aggravated with the increasing of the velocity of flue gas,the fineness and diameter of ash increase. For a smallscale boiler with low load and short running time,the abrasion is not very serious.
引文
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[2]蒋绍坚,魏烈旭,艾元方,等.生物质成型燃料炉点火和熄火过程中排放行为的实验研究[J].热科学与技术,2010,9(3):256-261.
[3]刘萍,王勇,李云金,等.DZG1.5-1.0-M小型高效快装生物质锅炉的研发[J].工业锅炉,2016(2):23-26.
[4]鲍振博,刘长安,解光传,等.多体式秸秆生物质气化炉的设计[J].农机化研究,2017,39(3):253-257,263.
[5]彭宇,曹伟男,任雨峰,等.锅炉燃料燃烧对空气量和烟气量的影响[J].工业炉,2016,38(2):58-60.
[6]陈林.工业锅炉烟管泄漏成因分析及预防措施[J].低碳世界,2016(17):12-13.
[7]姚根芝,姚海龙.一台快装锅炉烟管磨损泄漏原因分析及对策[J].科技信息,2012(33):916.
[8]王秀,李应军,李耀东,等.DZL型热水锅炉烟管磨损实例解析[J].节能,2008,27(5):57-58.
[9]吴文学.燃煤改烧稻谷壳锅炉磨损分析及防止[J].中国特种设备安全,2010(10):55-56.
[10]周雪峰,徐连荣,向夏楠,等.煤改生物质燃料对锅炉安全运行的影响[J].中国特种设备安全,2011(8):60-62.
[11]李广东,常小芳,周中健.一台湿背式燃油锅炉改烧生物质燃料的实践[J].工业锅炉,2012(3):43-45.
[12]容銮恩,袁镇福,刘志敏,等.电站锅炉原理[M].北京:中国电力出版社,1997.