天然气化工2017，Vol.42Issue(1)：43-48,6.
焦炭塔运行过程热应力有限元分析
Thermal stress finite element analysis of the operation in coke drum
张海洪 1伍耐明 1李佳威1
作者信息
- 1. 北京航空航天大学能源与动力工程学院,北京 100191
- 折叠
摘要
Abstract
As the key equipment of delayed coking unit, the coke drum suffers tremendous periodic alternating temperature and cyclic load during operation. The research of stresses on coke drum's different parts and the same part at different time has great significance to the safe operation of coke drum. This study used thermal-structure coupling finite element method, with thermal analysis results, the weight of the coke drum, internal pressure of operation and the water pressure as the loads to conduct structure field numerical calculation of coke drum. The results show that the thermal stress produced by temperature gradient has greater impact on the safety of coke drum than the stress caused by medium weight and gravity. Transition section has the most complex thermal stress change and the largest thermal stress. Besides the oil and gas preheating stage, all exist the stress peaks of coke drum which exceed the material yield limit of drum body that results in the plastic strain. Steam coke-cooling stage has the minimum variation of stress on the drum body, and water coke-cooling process has the biggest impact on the safe operation of coke drum.关键词
延迟焦化/焦炭塔/热应力/热-结构耦合/有限元分析Key words
delayed coking/coke drum/thermal stress/thermal-structure coupling/finite element analysis分类
化学化工引用本文复制引用
张海洪,伍耐明,李佳威..焦炭塔运行过程热应力有限元分析[J].天然气化工,2017,42(1):43-48,6.
