炼化反应器环缝焊接变形对运行的影响及对策
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摘要
为了避免炼油化工重大反应器,例如焦化反应器、重整反应器、气相反应器以及脱氢反应器制造中环焊缝变形对其运行质量的不良影响,文章对各种影响因素进行了探讨,并重点分析了焊接导致变形这一主要因素。针对某个具体筒体环缝焊接建立了有限元模型进行塑性变形模拟计算,然后和试验记录结果进行了比对,证实了有关分析。在此基础上,对制造中预防环缝焊接变形提出了一些技术对策,应用于产品取得实效。
In order to avoid the adverse impacts on operation quality caused by circumferential joint welding deformation for oil refining and chemical major reactors such as coking reactor, reformer, gas phase reactor and dehydrogenation reactor during the manufacturing process, this paper discusses various influencing factors and focuses on analyzing the main factor which is deformation caused by welding. A finite element model was established for a specific cylinder circumferential welding to carry out a simulation calculation of the plastic deformation. Then the results were compared with the test records to confirm the relevant analysis. On this basis, some technical countermeasures are proposed to prevent circumferential welding deformation in manufacturing. They are applied to the products and practical results are obtained.
In order to avoid the adverse impacts on operation quality caused by circumferential joint welding deformation for oil refining and chemical major reactors such as coking reactor, reformer, gas phase reactor and dehydrogenation reactor during the manufacturing process, this paper discusses various influencing factors and focuses on analyzing the main factor which is deformation caused by welding. A finite element model was established for a specific cylinder circumferential welding to carry out a simulation calculation of the plastic deformation. Then the results were compared with the test records to confirm the relevant analysis. On this basis, some technical countermeasures are proposed to prevent circumferential welding deformation in manufacturing. They are applied to the products and practical results are obtained.
引文
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[2] 王晶,田冬冬. 聚丙烯装置卧式反应器搅拌器驱动轴断裂分析[J]. 石油化工设备技术,2018,39(4):39-41.
[3] 高耀东,何雪. 基于ANSYS单元生死技术的焊接模拟[J]. 热加工工艺,2010,39(7):120-122,126.
[4] 陈孙艺. 焦炭塔内焦床影响塔壁变形的作用机理研究[J]. 石油化工设备技术,2008,29(6):16-19.
[5] 赵沛雄,王文利,王天先,等. 大型厚壁容器局部热处理参数研究[C]//中国机械工程学会压力容器分会,合肥通用机械研究院. 压力容器先进技术——第八届全国压力容器学术会议论文集. 北京:化学工业出版社, 2013.
[6] 陈建波,罗宇,龙哲. 大型复杂结构焊接变形热弹塑性有限元分析[J]. 焊接学报,2008,29(4):69-72.