某大型高炉粗煤气系统有限元分析及工程设计

某大型高炉工程粗煤气系统拟采用上升管、三通管及下降管的结构形式,除尘器拟采用重力除尘器.粗煤气系统结构受力复杂,在以往的工程设计中上升管、三通管、下降管及除尘器壁厚主要根据工程经验确定.在总结吸取以前工程实践经验的基础上,运用有限元程序对上升管、三通管、下降管、重力除尘器度重力除尘器支架进行整体建模分析.考虑高炉生产过程中可能同时作用的荷栽,对结构进行弹性计算分析,了解结构的整体特性,得到结构在设计荷载作用下的应力、应变分布规律,管道接口局部应力集中情况.介绍设计和施工中应注意的问题,为工程设计和施工提供参考.

FINITE ELEMENT ANALYSIS AND DESIGN OF BLAST FURNACE CRUDE GAS SYSTEM

A blast furnace crude gas system would be the technology layout of the riser, the three-way pipe and the downcomer. The dust separator would be gravity dust separator. The structural stress of the crude gas system was complex. The thickness of the pipes and the shell of the gravity dust separator were determined by engineering practice and experience. Based on the engineering practice and experience, the riser, the three-way pipe, the downcomer, the gravity dust separator and it’s support frame were modeled by finite element program. The elastic analysis of structure was done by considering the loads in blast furnace operation to understand the integral character of the structure. The stress and strain rules of the structure on the design loads, the local stress concentration at interface of the pipes were obtained.Some attentive problems in design and construction were introduced, which could direct the design and the construction.