Assessment of the Implementation of Heat-Integrated Distillation Columns for the Separation of Ternary Mixtures

作者：Cabrera Ruiz Julian^*; Jimenez Gutierrez Arturo; Gabriel Segovia Hernandez J

来源：Industrial & Engineering Chemistry Research, 2011, 50(4): 2176-2181.

DOI：10.1021/ie101939e

An ideal HIDiC (internal heat-integrated distillation column) makes the reboiler heat duty equal to zero, with the heat requirements for the separation transferred to a compressor. In real applications, there is a limit on the energy integration that can be achieved depending on the separation problem. In this work, a design method based on the column grand composite curve (CGCC) is presented. The CGCC is used to establish the integration capabilities between the rectifying and stripping sections of the system. The method is used to develop HIDiC separation sequences for ternary mixtures, and the effects of HIDiC implementation on energy, economics and greenhouse-gas emissions savings are addressed. The results of several case studies show that a good deal of energy savings can be achieved with this type of arrangement, but that the work required by the compressor can overcome the energy savings achieved through the process integration.

• 出版日期2011-2-16