【作者】 尹淑庄；

【导师】 金腊华；

【作者基本信息】 暨南大学 ， 环境科学， 2006， 硕士

【摘要】 本文运用模糊数学的基本理论，针对燃油发电工程的环境风险特征，建立了燃油发电工程的环境风险评价体系。 针对燃油发电工程特点，本文将其环境风险因素以工艺单元划分为燃油贮存系统风险、锅炉系统风险、注氨系统风险、除尘系统风险和脱硫系统风险五大部分。在总结事故后果模型研究成果的基础上，选择合适模型对燃油发电工程各工艺单元突发性事故的后果，进行了定量预测；并利用模糊综合评价理论，对各个风险因素中的风险致因进行了模糊综合，然后把所得到的模糊综合评价向量转化为模糊分值，以此分值来代表该环境风险因子的风险值；再通过一级一级向上进行模糊综合，求得环境系统总风险值和各个风险因素的风险值，根据风险值的大小来判断系统中主要风险因素及各个风险因素的主要风险因子，建立燃油发电工程环境风险评价体系。 作为应用实例，将燃油发电工程环境风险评价体系应用于湛江奥里油发电工程的环境风险评价。在评价中，对各工艺单元的典型突发性事故的后果进行了定量预测，并运用模糊综合评价得出该环境系统主要风险因素为燃油贮存系统风险，得出燃油贮存系统、锅炉系统、注氨系统、除尘系统和脱硫系统的主要风险致因对应为人为因素、超压、超压、电压电流异常和结垢堵塞，且在本文结尾部分据此提出了该工程相应的风险事故防范措施。更多还原

【Abstract】 Environmental risk of oil-fired power plant was analyzed in this paper by using basic theory of fuzzy mathematics. In allusion to the characteristics of oil-fired power plant, environmental risk assessment system for oil-fired power plant was established.In allusion to the characteristics of oil-fired power plant, risk factors were compartmentalized into five parts according to the workshops: risk of Oil storage system, Boiler system, Ammonia-disemboguement system, Dust catcher system and FGD system. By summarizing the fruits of research on models for aftermaths of accidents, appropriate models were chosen to forecast aftermaths of the paroxysmal accidents of those workshops in oil-fired power plant quantificationally. All the risk causations were fuzzily synthesized by the fuzzy synthetic evaluation. Then, these evaluation vectors were turned into fuzzy scores which could represent risk degree. Through the fuzzy synthetic evaluation step by step, the total risk degree of environmental system and the risk degrees of risk factors were calculated. Based on the results, the primary risk factor and the primary risk causations were fixed on. Environmental risk assessment system for oil-fired power plant was established in the end.Taking Zhanjiang Olimulsion-fired Power Plant for example, environmental risk assessment system for oil-fired power plant was applied to analyze its environmental risk. In this assessment, aftermaths of the typical and paroxysmal accidents of those workshops were forecasted quantificationally. By using fuzzy synthetic evaluation, results showed that risk of Oil storage system was the primary risk factor of environmental system with the man-made factor as its primary risk causation. Excess compressive stress was the primary risk causation of Boiler system and Ammonia-disemboguement system. Abnormity of electrical and current voltage and agglomeration jam were the primary risk causations of Dust catcher system and FGD system respectively. Hereby, some preventive measures were proposed to guard against the accidents at the end of this paper.更多还原