The quantitative risk assessment of a hydrogen generation unit
The quantitative risk assessment of a hydrogen generation unit
复制标题
制氢装置的定量风险评估
DOI：
10.1016/j.ijhydene.2012.09.082
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
N. Badri
中科院分区：
文献类型：
--
作者：
M. Jafari;E. Zarei;N. Badri
制氢过程的安全性是一个主要问题。本文对天然气重整制氢装置运行过程中给周围环境带来的风险进行了定量分析。为此目的，在危险识别之后，使用通用数据估计了各种情景的发生频率。定量风险评估应用于后果建模和风险估计。结果表明，脱硫反应器全口径破裂引起的喷射火灾，死亡人数最多（26人），波及面积最大（5102 m2）。本次事故的致死半径、最大辐射和安全距离分别为140 m、370 kW/m2和225 m。重整炉内的全膛破裂可能导致最危险的闪火。在该事件中，LFL区（面积为1483.17平方米）和½ LEL区（面积为1970.74平方米）的释放物质浓度分别为61，125 ppm和40，000 ppm。QRA是评价制氢过程风险的可靠方法。
The safety of hydrogen generation process is a major concern. This paper discusses the quantitative analyzes of the risk imposed on neighborhood from the operation of a hydrogen generator using natural gas reforming process. For this purpose, after hazard identification, the frequency of scenarios was estimated using generic data. Quantitative risk assessment was applied for consequence modeling and risk estimation. The results revealed that, jet fire caused by a full bore rupture in Desulphurization reactor has the highest fatality (26person) and affects the largest area of 5102 m2. The lethality radius, maximum radiation and safe distance of this incident were 140 m, 370 kW/m2and 225 m respectively. A full bore rupture in Reformer can lead to the most dangerous flash fire. In this incident the concentration of released material in LFL zone (area of 1483.17 m2) and ½ LEL zone (area of 1970.74 m2) were 61,125 ppm and 40,000 ppm respectively. QRA is a credible method to assess the risks of hydrogen generation process.