应用隔壁式精馏塔分离煤制烯烃设计  

Design of Separation Process with Dividing-Wall Column for Light Olefins Based Coal

作　　者：李俊龙[1] 陈超[1] 倪欣怡[1] 王丹丹[1] 孙强[1] 郭绪强[1] 

机构地区：[1]中国石油大学(北京)化学工程学院,北京102249

出　　处：《石油化工高等学校学报》2016年第5期9-16,21,共9页Journal of Petrochemical Universities

基　　金：国家科技部973项目"绿色低碳导向的高效炼油过程基础研究"子课题"炼油过程低碳产品高效分离与精制"(2012CB215005)

摘　　要：利用Aspen HYSYS流程模拟软件完成隔壁式精馏塔的设计,设计过程中引用逻辑操作单元将隔壁式精馏塔的预分离塔与主精馏塔进行了耦合,逻辑操作单元的引入可以减少隔壁式精馏塔的自由度,从而降低了精馏塔模拟达到稳态时的难度。在完成精馏塔设计并得到结果的基础上,对稳态工艺过程模拟结果进行灵敏度分析,考察了隔壁式精馏塔侧线抽出流量、回流比、进料温度、气相回流流量和液相回流流量对隔壁式精馏塔塔顶、中间以及塔底组成的影响,得到优化后的工艺操作参数。同时根据隔壁式精馏塔分离产物的组成提出并联分离顺序,与原有的顺序分离相比流程更加紧凑,对实际的烯烃分离流程的设计工作具有参考意义。A design about application of dividing-wall to separate light olefins based coal was accomplished in software Aspen HYSYS.The logic recycle operation units coupled the pre-fractionator with main fractionator,which could reduce the number of column freedom.The sensitivity analyses were made on the base of stable process design,which included the relationship between middle stream mole flow rate drown out of main column,reflex ratio,feed stream temperature,vapor mole flow rate recycle back to pre-fractionator,liquid recycle back to pre-fractionator and main column top,middle and bottom composition,then optimized operation parameters were obtained.And a novel separation process was addressed according to the mole fraction of three production stream,which was more compact than traditional separation process.

关 键 词：煤制烯烃 隔壁式精馏塔 ASPEN HYSYS 灵敏度分析 

分 类 号：TE661[石油与天然气工程—油气加工工程] TQ536.9[化学工程—煤化学工程]