Pinch Analysis-Based Approach to Conceptual Design of Internally Heat-Integrated Distillation Columns

A novel simplified configuration for an ideal heat-integrated distillation column (ideal HIDiC)

“…Although stage-to-stage internal heat integration in the ideal HIDiC helps to bring about gradual changes in the vapor and liquid flow rates, it is actually very difficult to guarantee that all of the heat-integrated pairs of stages contribute effectively to the improvement in thermodynamic efficiency. In terms of pinch technology, Gadalla et al once analyzed an ideal HIDiC separating a propylene/propane binary mixture and found that ineffective and even adverse internal heat integration could occur [18]. The findings in this work are in accord with their conclusion and lend a strong support to the approximation of the ideal HIDiC with the SIHIDiC in process synthesis and design.…”

Thermodynamic optimisation of distillation columns

“…Another approach is the internal heat-integrated distillation column (HIDIC) (Nakaiwa et al, 2003;Gadalla et al, 2005;Iwakabe et al, 2006), where part (or the whole) of the rectifying section is heat-integrated with part (or the whole) of the stripping section, through the use of a higher pressure in the rectifying section (compared to the stripping section pressure) and a number of heat exchangers. This concept makes use of the heat available in the rectifying section to satisfy the heat requirement in the stripping section.…”

Coluna de destilação concêntrica com integração interna de calor (CDIIC): estudo energetico em diferentes arranjos geometricos

“…A coluna CDIIC é uma alternativa para a diminuição do consumo energético. Gadalla et al (2005), apresentou um estudo desenvolvido na Holanda, na universidade de Delf, do analise pinch e desenho conceitual da coluna. Na atualidade, diferentes estudos referentes ao intercambio de calor pelo meio de trocadores na parte interna da coluna são desenvolvidos, por Holandeses, através de plantas piloto.…”