Efficient use of energy in distillation sequences

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/136055
Información del item - Informació de l'item - Item information
Title: Efficient use of energy in distillation sequences
Authors: Caballero, José A. | Labarta, Juan A. | Jiménez, Laureano
Research Group/s: Computer Optimization of Chemical Engineering Processes and Technologies (CONCEPT)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Distillation | Sequences | Efficient | Energy | CONCEPT | Sustainability
Date Created: 24-Jun-2022
Issue Date: 18-Jun-2023
Abstract: In a growing energy consumption world, energy efficiency has become mandatory. Furthermore, the climate emergency has highlighted the necessity to replace fossil fuels with renewable energy sources. Nevertheless, the direct utilization of many of these energy sources requires, at least partially, the electrification of chemical processes. It is not uncommon the claim that distillation must be substituted by other, more efficient separation technologies. The main reason is based on the fact that distillation vaporizes a mixture in the reboiler and then liquifies a vapor stream in the condenser. However, Agrawal and Tumbalam Gooty, have shown that distillation can be much more efficient than what intuition seems to suggest. Different alternatives have been proposed to increase the energy efficiency in distillation. If we are dealing with a single separation we can consider alternatives like multi-effect distillation, and intermediate heat exchangers either in the rectifying or in the stripping section, pre-fractionations, internally heat integrated distillation columns (HIDiC) and heat pump assisted distillation (Vapor recompression, Mechanical or Thermal Vapor recompression -VRC- or bottom flashing arrangements). In multicomponent distillation, the number of alternatives increases because we can integrate the alternatives for heat integration between different columns with those of a single column and the alternatives for column sequencing inherent in multi-component distillation. In this work, we show that the systematic and simultaneous implementation of some heat integration alternatives like direct reboiler condenser heat exchange, implementation of vapor (re)compression cycles, leverage of heat in high-pressure steam utilities at lower pressure/temperatures, multiple effect distillation, etc. can eventually produce considerably reductions in energy and total annualized cost and at the same time, contribute to the electrification of chemical plants. While none of these alternatives is new, they are rarely simultaneously implemented in a distillation sequence, however, we show that there is great potential in the synergic effects of implementing simultaneously some of them.
Description: 33rd European Symposium on Computer-Aided Process Engineering (ESCAPE-33). Green and Sustainable Process Systems Engineering in the Digital Age. (Poster 95). Full communication reference: Computer-Aided Chemical Engineering 2023, 52, 1925-1930.
Sponsor: The authors acknowledge financial support from the “Ministerio de Ciencia e Innovación”, Spain, under project PID2021-124139NB-C21.
URI: http://hdl.handle.net/10045/136055
Language: eng
Type: info:eu-repo/semantics/conferenceObject
Rights: Only for teaching/research and academic uses. Non-commercial.
Peer Review: no
Appears in Collections:INV - CONCEPT - Comunicaciones a Congresos, Conferencias, etc.

Files in This Item:
Files in This Item:
File Description SizeFormat 
ThumbnailPOSTER_95_Caballero_et_al.pdf359,1 kBAdobe PDFOpen Preview

This item is licensed under a Creative Commons License Creative Commons