文献类型：期刊文献

中文题名：长期运行加氢裂化反应器应力分析

英文题名：Stress analysis for hydrocracking reactor under long-term conditions

作者：侯峰[1];徐宏[1];潘春锋[1]

机构：[1]华东理工大学机械与动力工程学院,上海市200237

年份：2014

卷号：44

期号：9

起止页码：39

中文期刊名：炼油技术与工程

外文期刊名：Petroleum Refinery Engineering

收录：CSTPCD;;Scopus

语种：中文

中文关键词：加氢裂化反应器;有限元;应力分析

外文关键词：hydrotreatment reactor; finite element; stress analysis

摘要：加氢裂化反应器是加氢装置的核心设备,长期在高温高压临氢状态下运行,且不断受到开停车时产生的热冲击,它的稳定运行对加氢装置的安全至关重要.以某石化公司加氢裂化反应器为研究对象,采用ANSYS有限元分析方法,建立有限元模型,对在正常与事故工况下运行的加氢裂化反应器应力状况进行分析,结果表明加氢裂化反应器的总体应力水平较低,母材2.25 Cr1Mo钢应力分布介于91～179 MPa,堆焊层应力分布介于135～ 157MPa,堆焊层出现屈服,应力最大值出现在凸台处,约200 MPa.加氢裂化反应器在飞温时也不会使材料发生明显的蠕变损伤,但是开停车或事故工况时的温度变化可能会导致反应器凸台支撑部位不锈钢堆焊层产生裂纹.
The hydrogenation reactors are the critical equipment in hydrogenation units.These reactors are manufactured with heavy plates,forged shells,forged nozzles and fittings.The hydrogenation reactors are running under the long-term high temperature and high pressure hydrogen conditions and subject to thermal cycles during the start-up and shutdown of the unit.Their stable operation is very critical for the safety of the hydrogenation unit.In this paper,the finite element method （ANSYS） is applied to analyze the stress distribution of the hydrogenation reactors under the normal and abnormal conditions.The results show that the reactor＇ s stress level is safe.The stress distribution of base 2.25Cr1Mo steel varies from 91 MPa to 179 MPa,while that of overlay stainless steel varies from 135 MPa to 157 MPa,which leads to overlay＇ s yield.The highest stress of 200 MPa is generated on the supporting boss.The temperature over-run of hydrogenation reactor will not cause any significant creep damages of materials.Whereas,the temperature variations during start-up and shutdown of the unit may lead to cracking of stainless steel overlay welds at the supporting boss of reactor.