Synthesis of Non-Sharp Complex and Thermally Coupled Separation Systems

化学过程通常包括多组分分离 生产两种以上产品的序列。 这样的分离 系统用于进料准备，产品分离， 产品加工和废料处理。 A的分离过程 化工厂对总投资有很大的影响， 年度运营成本-在某些情况下，这可能是主要成本 贡献者。 因此，努力开发系统的自动化 将产生接近最佳分离序列的方法是 对工业的极大兴趣。 这项研究的目的是利用 数学规划技术，以获得更好的理解 分离多个多组分源的一般问题 几种多组分产品。 具体而言，工作是针对解决一般 问题：合成这样的分离序列与“非尖锐” （这意味着塔顶馏出物、塔底馏出物或侧出口料流都不含有任何 一种纯产物）、复合物和热耦合单元。 工作 计划包括： (a)对分离合成进行了系统的研究 使用数学规划的“非尖锐”单位系统 方法。 (b)研究“复杂”色谱柱的合成， 多个进料流、多个侧流和泵- 围绕系统。 (c)制定将目标（a）和（b） 的 是热耦合系统的综合， 涉及与几个分离器相关联“非尖锐”预分馏器 “复杂”列。 (d)研究热集成的同时考虑 对“非尖锐”和“复杂”的系统进行优化 列. (e)开发用于方法自动化的软件 在上述目标中。 除了生成柱设计标准外， 还应提供关于是否 这是生成所需多组分所必需的 产品. 其他替代办法可能会节省大量资金。

Chemical processes frequently include multicomponent separation sequences which produce more than two products. Such separation systems are used for feed preparation, product separation, product finishing and waste treatment. The separation process of a chemical plant has a large effect on the total capital investment and the annual operating cost - in some cases it might be the major cost contributor. Therefore efforts to develop systematic automated approaches that will produce near-optimum separation sequences are of great interest to industry. The goal of this research is to use mathematical programming techniques to obtain a better understanding of the general problem of separating several multicomponent sources into several multicomponent products. Specifically, the work is directed toward solving the general problem: synthesize such separation sequences with "non-sharp" (meaning neither overhead, bottoms, or side exit streams contains any one pure product), complex, and thermally coupled units. The work plan includes: (a) Performing a systematic study on the synthesis of separation systems that involve "non-sharp" units, using mathematical programming approaches. (b) Investigating the synthesis of "complex" columns that may involve several feed streams, several side streams and pump- around systems. (c) Developing systematic approaches for coupling goals (a) and that is, the synthesis of thermally coupled systems that involve "non-sharp" prefractionators associated with several "complex" columns. (d) Investigating the simultaneous consideration of heat integration and optimization of the systems that invlove "non-sharp" and "complex" columns. (e) Developing software for the automation of the approaches described in the above goals. In addition to generating column design criteria, this work should also provide information on whether separator units are required at all for the generation of the desired multicomponent products. Other alternatives may result in substantial savings.