Integrated Synthesis of Optimal Separation and Heat Exchanger Networks Involving Separations Based on Various Properties

• Published in: Heat transfer engineering Vol. 26; no. 5; pp. 25 - 41
• Main Authors: HECKL, I., FRIEDLER, F., FAN, L. T.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.06.2005; Taylor & Francis
• Subjects: Applied sciences; Chemical engineering; Crystallization, leaching, miscellaneous separations; Exact sciences and technology; Meshed network; Heat exchanger; Superstructure; Integrated design; Separation process; Cost analysis; Mathematical model; Optimal design
• ISSN: 0145-7632; 1521-0537
• DOI: 10.1080/01457630590927318

The current effort aims at contributing to the algorithmic synthesis of a heat-integrated separation network system involving separations based on various properties, such as volatility, solubility, and permeability. This is unlike any of the previous works on heat-integrated network synthesis involving separation based only on a single property, such as volatility. The network under consideration consists of mixers, dividers, separators, utilities, and heat exchangers. The network system produces pure or multicomponent product streams from a single or multiple feed streams. Meanwhile, it satisfies the heat requirements not only between reboilers and condensers but also between hot and cold streams throughout the entire network of a production plant with the lowest possible annualized cost. The costs of the mixers and dividers are regarded as negligible: the cost of a separator, a linear function of the flowrate of its input stream without an additive constant parameter, and the cost of a utility, proportional to the heat provided or extracted. The cost of a heat exchanger is calculated based on logarithmic-mean temperature difference (LMTD).