渣油加氢装置热高分空冷器高压管道水压试验开裂失效分析

发布时间：2018-01-07 12:12

本文关键词：渣油加氢装置热高分空冷器高压管道水压试验开裂失效分析　出处：《华东理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：渣油加氢最初是以劣质渣油为原材料,生产优质燃料为主的一种工艺。后来,通过与催化裂化工艺的结合,极大地提高了炼油厂轻质油品的收率,具有很强的社会及经济效益优势。上海石化一年产390万吨的渣油加氢装置在2012年9月,其高压氢气入口管线在水压试验的过程中发生了爆裂。为了找出高压氢气入口管线的失效原因,本文对失效管线进行了详细的失效分析,通过试验及理论分析,找出管道的开裂原因,并由此提出相应的改进措施。本文的研究内容如下：(1)首先,对失效管线材料进行了一系列的理化检测,以检验管材的性能是否符合要求。(2)通过对断口的宏观分析,找出了裂纹的起裂位置及扩展方式等,得出裂纹起裂于管子外壁焊接支承圈的焊缝交接处的V形缺口处,断裂方式为脆性断裂；断口的微观上呈现的解理断裂特征与宏观上的检测结果相符。(3)对断口的关键部位进行了能谱检测分析,分析了断口上的碎片及夹杂物的化学成分,以检验夹杂物及碎片对管道爆破的影响。(4)最后,对失效管线进行了断裂力学的分析。通过此次的课题研究,不仅找出了管道爆破的原因,提出了相应的改进措施,也对相关装置的设计及建设具有实际的指导意义。
[Abstract]:Is the first residue hydrogenation residue as raw materials, production of high quality fuel a technology. Later, through a combination of technology and catalytic cracking, greatly improve the yield of light oil refinery, has the advantages of strong social and economic benefits. The residue hydrotreating unit of Shanghai Petrochemical an annual output of 3 million 900 thousand tons in in September 2012, the high pressure hydrogen entrance pipeline burst occurred in the process of pressure test. In order to find out the causes of failure of high pressure hydrogen entrance pipeline, this paper made a detailed analysis of the failure of pipeline failure, through experiments and theoretical analysis, find out the reasons of pipeline crack, and puts forward the corresponding improvement measures. The research contents of this paper are as follows: (1) first, the failure of pipeline materials are a series of physical and chemical testing, to test whether the performance of pipe to meet the requirements. (2) through the macro analysis of the fracture, the crack The initial position and extension, the V shaped notch crack weld junction on the outer wall of the pipe welding support ring, fracture mode is brittle fracture; line detection results of cleavage fracture characteristics and macro micro appeared on the fracture surface. (3) the key part of the fracture position of energy spectrum detection and analysis of chemical composition, debris and inclusions on the fracture are analyzed, in order to test the inclusion and debris impact on pipeline blasting. (4) finally, the failure of pipeline fracture mechanics analysis. Through this subject research, not only to find out the causes of pipe explosion, put forward the corresponding improvement measures, design and the construction of related devices has practical significance.

【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE96

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