优秀毕业论文（设计）_煤焦油产品的分离序列及优化.docVIP

毕 业 设 计 （ 2016 届） 题 目 煤焦油产品分离序列的 设计及优化 学 院 化学化工学院 专 业 化学工程与工艺 年 级 201级 学生学号 1201242463 学生姓名 指导教师 李 平 摘 要 煤焦油是组分上万种的复杂混合物,也是十分宝贵的有机化工原料。据分析,煤焦油中的某些组分是不可能或者很难从其他原料中得到,例如芳烃化学原料、型煤粉剂及国防工业的贵重原料等。因此研究煤焦油的分离是世界各国关注的重要领域之一。 遗憾的是,由于煤焦油体系的复杂性,以往的研究多局限于经验的实验方法。随着科学技术的进步和计算机技术的发展,采用先进的过程模拟方法对煤焦油分离过程进行研究已成为可能。本文利用Aspen Plus作为研究平台,对煤焦油的分离过程进行了较深入的研究。 掌握可靠的体系基础物性和热力学性质是进行煤焦油分离模拟研究的先决条件。本文根据煤焦油组成及蒸馏原理,为煤焦油分离过程模拟研究提供了可靠的基础数据。 本文对煤焦油粗分离工艺进行了模拟及优化研究,着重探讨了三中不同分离顺序的对产品产量和耗能的影响，从中选择产量大、能耗低的分离流程进行优化，并以加料位置、理论板数、回流比等对分离过程及产品纯度的影响,为实际工业生产提供设计和改进依据。 关键词：煤焦油 常减压蒸馏 Aspen Plus 模拟优化 Abstract Coal tar is a very complex compound and also extremely precious organic chem- ical material. It has been studied that some components in the coal tar is very hard or even never obtained from other materials, for example, aromatic chemicals, impregnated sleeper ,coal-powder. Therefore the subject of the separation of coal tar is one of the most important areas in the whole world. Unfortunately, due to the complexity of coal tar, many researches were limited into experimental methods. With the development of science and computer tech- nology, its possible to separate coal tar by using the advanced process simulation method. Based on Aspen Plus, the separation process has been further studied. Mastering reliable fundamental property and thermodynamic properties is the prerequisite for separation and simulation of coal tar. According to the coal tar co- mpositions and distillation principle, which has provided dependable parameters for the separation process of coal tar. Crude coal tar paper separation process was simulated and optimization studies focused on the impact of three different order of separatio