有限元乙烯装置中的丙烯精馏塔+CAD图纸+答辩PPT
关键词：板式塔；丙烯；精馏塔；压力容器；有限元
Design propylene distillation column in Ethylene plant
Abstract：The media of this design of Propylene distillation column in Ethylene plant design temperature is 127°C, design pressure is 1.94Mpa.The diameter of column is 2000mm, and height is 46m, which is Sieve-plate column and has 80 trays. Column is important process equipment, which is widely used in petrochemical, pharmacy, food, environment protection and so on. Based on process conditions, Q345R was chosen as column material. Stiffening was made at open pore region and stiffening rings was chosen. The strength and the stability of the column were checked including calculating mass loads, self-vibrations cycles, earthquake loads, earthquake moments, wind loads, wind moments. The axial stresses in cylindrical shell and skirt support were checked. The strength and the stability of the column were eligible. And by comparing different components, davits, sag ears, trays, tubes, flanges, flats and ladders were designed and chosen.
Key Words：tray column；xylene；distillation column；pressure vessel；finite element
目 录
1 绪论 1
1.1 课题简介 1
1.1.1 装置概况 1
1.1.2 精馏原理 1
1.1.3 装置特点 1
1.1.4 课题任务 1
1.2 文献综述 2
1.2.1 工艺简介 2
1.2.2 研究意义 2
1.3 国内外课题的研究进展及存在问题 4
1.3.1研究现状 4
1.3.2模拟数据与实际数据的对比 4
1.3.3 研究方向 4
1.3.4 问题解决和技术进展 5
1.4 毕业设计内容 6
1.4.1 塔型的选择 6
1.4.2 塔设备主要结构尺寸的确定 6
1.4.3 塔盘型式设计 6
1.4.4 塔盘结构设计 7
1.4.5塔盘的机械计算 7
1.4.6塔盘的支承结构 7
1.4.7 塔设备强度设计和稳定校核 7
1.5难点和创新 8
2 塔内件设计 9
2.1 总体结构 9
2.2 塔盘 9
2.3 人孔 10
2.4 降液管 11
2.5 溢流堰 12
2.6 设备接管 12
2.6.1 进料管 12
2.6.2 出料管 13
2.6.3 进气管 13
2.7 平台及扶梯 15
2.8 管法兰 15
2.9 本章小结 17
3 筒体封头材料选择与塔设备结构设计 18
3.1 精馏塔设计参数 18
3.2 圆筒材料选择 18
3.3 厚度设计 19