基于三元组分法的火炬气燃烧机制
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摘要
为选择合适的火炬气空气配比和助燃条件,提高火炬燃烧效率,减少火炬气燃烧不完全等事故发生,开展含氮火炬气燃烧实验,研究可燃气体与N_2在不同配比条件下的火炬气燃烧状态,并采用三元组分图法分析火炬气熄灭的原因。研究表明:当火炬气组分中丙烷(C_3H_8)与N_2体积比≤1∶3时,火炬气熄灭;火炬气熄灭原因为火炬气流速较快,卷吸空气量大于火炬气体积的12. 02倍,气云团中C_3H_8浓度小于最低燃烧极限1. 92%。
In order to improve the combustion efficiency of the flare gas and reduce the accident of flare gas incomplete combustion,the nitrogen contained flare gas burning with different calorific values was conducted,and the flare gas combustion with different ratio of combustible gas and nitrogen was investigated. The ternary component chart method was used to analyze the cause of the torch gas extinguishing. Results showed that the flare gas burned out when the volume ratio of propane and N_2 was less than or equal to 1∶ 3. The cause of flare gas burning out was its greater flow rate with that a indrafted air was 12. 02 times and the composition of propane was less than 1. 92%.
In order to improve the combustion efficiency of the flare gas and reduce the accident of flare gas incomplete combustion,the nitrogen contained flare gas burning with different calorific values was conducted,and the flare gas combustion with different ratio of combustible gas and nitrogen was investigated. The ternary component chart method was used to analyze the cause of the torch gas extinguishing. Results showed that the flare gas burned out when the volume ratio of propane and N_2 was less than or equal to 1∶ 3. The cause of flare gas burning out was its greater flow rate with that a indrafted air was 12. 02 times and the composition of propane was less than 1. 92%.
引文
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[13]王淑兰,毕明树,李岳.工业多元混合气体爆炸极限计算[J].化工装备技术,2000,21(6):28.
[14]王广生,张海峰.石油化工原料与产品安全手册[M].北京:中国石化出版社,2010:351.
[2] SCHWARTZ R,WHITE J,BUSSMAN W. The john zink combustion handbook[M]. Boca Raton:CRC Press,2001.
[3]韩钧.炼油厂火炬系统工艺设计探讨[J].石油化工安全技术,2002,18(2):21.
[4]白永忠. HAZOP技术在炼油火炬系统工艺危害分析中的应用[J].中国安全生产科学技术,2011,7(10):106.
[5]马卫东,李冰晶,付金杯,等.高架火炬污染源事故状态预测模式的参数确定及应用[J].工业安全与环保,2013,39(3):73.
[6] STROSHER M T. Investigations of flare gas emissions in Alberta:report to Environment Canada Conservation and Protection,the Alberta Energy and Utilities Board,and the Canadian Association of Petroleum Producers[R]. Alberta:Alberta Research Council,1996.
[7] CASTIEIRA D,EDGAR T F. CFD for simulation of steamassisted and air-assisted flare combustion systems[J]. Energy&Fuels 2006,20:1044.
[8]李级三.提高燃烧效率与最佳燃烧点的确定-烟道气分析仪的应用[J].中国仪器仪表,2000(4):38.
[9]焦沛.实时监控锅炉燃烧状态的火焰在线监测系统[J].西北电力技术,2004(3):39.
[10]姜正侯,郭文博,傅忠诚,等.燃气燃烧与应用(第四版)[M].北京:中国建筑工业出版社,2011:34.
[11]刘沛华,张金锁,张璇,等.浮顶罐双层密封圈环空燃爆危险性与惰化控制[J].消防科学与技术,2015,34(11):1419.
[12]董文庚,苏昭桂.三元组分图在储罐退役惰性化过程设计中的应用[J].中国安全生产科学技术,2007,3(4):37.
[13]王淑兰,毕明树,李岳.工业多元混合气体爆炸极限计算[J].化工装备技术,2000,21(6):28.
[14]王广生,张海峰.石油化工原料与产品安全手册[M].北京:中国石化出版社,2010:351.