基于模糊层次分析法的整体煤气化联合循环发电系统（IGCC）工艺设备安全风险研究

发布时间：2018-06-27 15:10

  本文选题：IGCC + 工艺设备安全风险　； 参考：《华东理工大学》2017年硕士论文

【摘要】：整体煤气化联合循环发电(Integrated Gasification Combined Cycle,简称IGCC)是先进的低污染、高效率的洁净煤发电技术,近年来发展迅速。由于其主要由煤气化系统和燃气循环发电系统两部分所组成,潜在危险性较大。但是,目前针对IGCC系统的工艺设备安全风险分析相对薄弱,所以亟需进行研究以弥补。论文以国内某IGCC电厂为研究对象,通过对比设计资料、现场勘查、参考类似装置事故等方式,运用安全检查表法和集思广益法,对其工艺设备的安全风险因素进行了辨识,建立了具有层次的IGCC工艺设备安全风险因素集合,涵盖IGCC装置整体风险因素,工艺设备系统单元的6个一级风险因素,以及27个具体的工艺设备二级风险因素。论文选定了以模糊层次分析法(FAHP)作为风险评价的主要方法。论文通过层次分析,确定IGCC各风险因素权重,并进行一致性检验,结果发现其中"二段投煤量过大"的权重最高。然后通过确定含有四级风险的模糊评价集合,建立隶属度矩阵,构造数学模型,按照最大隶属度原则,对IGCC工艺设备安全风险等级进行了模糊综合评估,以避免专家的主观因素对总体分析评价结果造成影响。结果表明,IGCC装置的整体工艺设备风险等级为Ⅰ级,其中,空分系统和气化炉系统的风险等级最高,为Ⅰ级。综合而言,提示IGCC装置安全风险巨大,针对其安全风险等级,提出了工程技术措施和管理措施等风险控制对策,为IGCC系统的安全、稳定、长效运行可以提供有效的研究参考。
[Abstract]:Integrated gasification combined cycle (IGCC) is an advanced clean coal power generation technology with low pollution and high efficiency. Because it is mainly composed of coal gasification system and gas cycle power generation system, the potential danger is great. However, the safety risk analysis of IGCC system is relatively weak at present, so it is urgent to make up for it. This paper takes an IGCC power plant in China as the research object. By comparing the design data, on-the-spot investigation, referring to similar device accidents, and using the safety inspection table method and brainstorming method, the paper identifies the safety risk factors of the process equipment. A set of safety risk factors for IGCC process equipment is established, which covers the overall risk factors of IGCC plant, six first-order risk factors of process equipment system unit, and 27 secondary risk factors of process equipment. The paper chooses the fuzzy analytic hierarchy process (FAHP) as the main method of risk evaluation. In this paper, the weight of IGCC risk factors is determined by analytic hierarchy process, and the consistency test is carried out. The results show that the weight of "excessive coal quantity in the second stage" is the highest. Then the fuzzy evaluation set with four levels of risk is determined, the membership matrix is established, the mathematical model is constructed, and according to the principle of maximum membership degree, the fuzzy comprehensive evaluation of the safety risk level of IGCC process equipment is carried out. In order to avoid the impact of the subjective factors on the overall analysis and evaluation results. The results show that the whole process equipment risk grade of IGCC plant is grade I, among which the air separation system and gasifier system have the highest risk grade and grade 鈪，

本文编号：2074328