3.3.5实际塔板数 ..................................................................................... 21 3.3.6 本节小结......................................................................................... 22
第四章 脱重塔计算 .......................................................... 22
4.1 Aspen Pluse计算选择 ........................................................................ 22 4.1.1物性方法的选择 ............................................................................. 22 4.1.2模型的选择 ..................................................................................... 23 4.2 DSTWU塔模拟过程 ......................................................................... 24 4.2.1塔初步设计计算模拟DSTWU ...................................................... 24 4.2.2塔模拟建立 ..................................................................................... 24 4.2.3 DSTWU小结 .................................................................................. 30 4.3塔精确计算模拟及塔条件确定 ........................................................ 30 4.3.1建立精馏塔模型 ............................................................................. 30 4.3.2塔运行结果 ..................................................................................... 33 4.4 塔分析 ................................................................................................ 34 4.4.1分布刨面.......................................................................................... 34 4.4.2分析运行结果 ................................................................................. 36 4.5塔优化及分析 .................................................................................... 36 4.5.1优化数据输入塔设定值 ................................................................. 36 4.5.2优化后数据结果分析 ..................................................................... 37 4.6塔的水力学数据导出表 .................................................................... 38 4.7 塔径的确定 ..................................................................................... 40 4.8 塔板数的确定 ................................................................................... 41
第五章 换热器计算 ............................................................ 41
5.1换热器的计算选型 ............................................................................ 41 5.1.1建立Aspen脱重塔流程 ................................................................. 41 5.1.2换热器详细计算 ............................................................................. 42 5.1.3换热器选型计算结果 ..................................................................... 49 5.1.4所选换热器参数汇总表。 ............................................................. 52 5.2换热器的选型 .................................................................................... 52 5.3 浮头式换热器的介绍 ....................................................................... 53 5.4 换热器的定型表达 ........................................................................... 54 5.5 各设备重要接管口口径确定 ........................................................... 55 5.5.1 管径确定的一般要求 .................................................................... 55 5.5.2 管径的确定 .................................................................................... 55
第六章 泵的计算 .............................................................. 56
6.1泵的参数计算 .................................................................................... 56 6.1.1 泵汽蚀余量的计算 ...................................................................... 56 6.1.2 泵的扬程的计算 ............................................................................ 57 6.2 泵的选型.......................................................................................... 57 6.3泵的特点和结构 ................................................................................ 57
第七章 物料平衡汇总表 .................................................. 59
7.1 物料平衡汇总表 ............................................................................. 59 7.1.1物料平衡表陈述 ............................................................................. 59
结 论 ........................................................................................ 66
参 考 文 献 .............................................................................. 67 致 谢 ........................................................................................ 68 附 录 ........................................................................................ 69
摘 要
我国炼油工艺的主要结构特点是以催化裂化为主，催化裂化的副产物中大约有60%是碳四馏分，它的主要组分有异丁烷、正丁烷、正丁烯、异丁烯和2-丁烯，其中异丁烷含量可高达34%，烯烃含量可达40%以上。
近年来，随着碳四馏分利用的研发深入和不断发展，对催化裂化碳四馏分综合利用烯烃后的剩余烷烃馏分进行正、异丁烷分离，以提高碳四组分的化工利用是解决碳四出路的又一新途径。为了更好的提高工业生产能力，基于投资少，能耗低，效益高的想法，本文对年产30万吨丁烯异构脱重塔系进行模拟研究。
模拟研究来自于实际生产MTBE过程中的脱重塔系。
针对C4与C5气体的分离塔研究，经过物料衡算通过Aspen Plus软件设计计算塔的各种参数，换热器的参数并选择合适的设备。通过精馏塔分离C4与C5组分并进行流出物冷却输送，设计计算精馏塔的理论板数，回流比等，设计选择换热器，泵。
本设计的重点是C4，C5在脱重塔的分离，Aspen Plus软件的模拟设计，塔系所用设备研究。
关键词：
C4，C5 精馏塔 Aspen Plus模拟研究 优化
ABSTRACT
The main structural characteristics of China's oil refining process is catalytic cracking main byproduct of catalytic cracking of about 60 percent carbon four fractions, the main component of iso-butane, butane, butane, isobutene and 2-butene, iso-butane content can be as high as 34%, the olefin content of up to 40 percent. In recent years, with four carbon fraction use in-depth research and evelopment and continuous development, the remaining four fractions of the catalytic cracking of carbon after the comprehensive utilization of olefin alkenes fraction, iso-butane separation, in order to improve chemical utilization of carbon components is to solve the carbon four-way out of a new way. In order to improve industrial production capacity, based on the idea of less investment, low energy consumption, high efficiency, the annual output of 300,000 tons, iso-butane distillation column design. the annual output of 300000 tons of butene heterogeneous simulation studies to take off the heavy tower system In this paper.
Simulation studies from the actual production to take off the heavy tower is in the
process of MTBE.
Study of C4 and C5 gas separation tower, through the material balance by Aspen Plus software design calculation parameters of the tower, the parameters of the heat exchanger and select the right equipment through rectifying column C4 and C5 fractions and effluent cooling conveyor, design and calculation of the rectifying column theoretical plate number, reflux ratio and so on, the design of heat exchanger, pump
This design is the focus of the C4, C5 in the serious separation of tower, Aspen
Plus software simulation design of the tower is a device used in research
Key words:
C4, C5 ：Rectification tower ：The Aspen Plus simulation research ：optimization