摘要
以某企业为例,运用道化法和蒙德法对其悬浮法氯乙烯聚合生产工艺中的聚合单元、汽提单元及压缩同收单元进行定量计算和评价,得出两者在进行火灾、爆炸的危险评价时,其结论基本上是接近的,但仍保持着各自的特点。这3个单元的主要物料是氯乙烯,若不考虑影响范围、损失情况的评价,选取蒙德法对聚合生产工艺进行安全评价更加切合实际,更有利于有的放矢地制定安全对策措施,为企业的安全管理提供依据。
The paper aims to present the analytical results of Dow- and Mond-method for their applications in the safety assessment of the suspension polymerization in vinyl chloride production by taking a certain enterprise as case study. The conclusions presented by both methods are basically close to each other when implemented on the risk assessment of fire and explosion. However, each of them has still maintained some individual characteristics. For example, Mond- method highlights the influences of the toxic elements on the evaluation units in the assessment of indicator parameters. The indicators which including cell toxicity indicator called U and the main toxicity accident indicator called C, U and C are listed separately as the primary evaluation indexes. Based on Dow＇s, Mond-method introduces the concept of toxicity in the initial calculation of fire, explosion and toxicity indicator which considering the substance toxicity as well. It has enhanced the reality of safety assessment towards the potential risks. Dow method takes into account the affected region of fire and explosion as well as MPPD, MPDO and production loss. These elements play important roles in the assessment of hazard, scope and consequences of accidents caused by fire and explosion. The main production material in three evaluation units is vinyl chloride. In ease the evaluation to the affected area and the loss situation are not con- sidered, it would be more realistic to select Mond-method in the assessment of suspension polymerization in vinyl chloride production. The option has the advantage in providing basis of safety management to the industry in the establishment of safety countermeasurement.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2010年第3期189-194,共6页
Journal of Safety and Environment
关键词
安全工程
火灾爆炸危险指数
蒙德法
安全评价
氯乙烯
补偿系数
聚合单元
safety engineering
F＆EI
Mond-method
safety assessment
vinyl chloride
compensating coefficient
polymerization unit
