Performance and Energy Consumption of Membrane‐Distillation Hybrid Systems for Olefin‐Paraffin Separation

Abstract

Light olefin and paraffin are commonly separated by energy‐intensive cryogenic distillation. Membrane/distillation hybrid systems constitute an economical alternative separation process. Different configurations of this hybrid system are studied for olefin‐paraffin separation with emphasis on C3 separation. An approach based on the McCabe‐Thiele method is applied to analyze different process configurations. A facilitated transport membrane is considered as membrane type. Both new column design and augmentation of an existing distillation column by a membrane module are considered. Numerical examples are considered for the separation of propane from propylene through different hybridization shapes with facilitated transport membranes. The energy requirement can be halved using hybrid systems.

Selectivity of Transport Processes in Ion-Exchange Membranes: Relationship with the Structure and Methods for Its Improvement

“…There are a number of other technologies in which ion-exchange membranes can also be used. For example, they can successfully compete with porous membranes in the processes of alkenes/alkanes separation [ 20 , 21 , 22 , 23 , 24 ]. Undoubtedly, ionic conductivity plays a dominant role in these applications.…”

Deep Eutectic Solvents As Tuning Media Dissolving Cu+ Used in Facilitated Transport Supported Liquid Membrane for Ethylene/Ethane Separation

“…Therefore, many researchers were devoted to finding novel, efficient, and economic olefins/paraffins separation methods, such as membrane distillation, , metal–organic frameworks adsorbent, , ionic liquid absorption, − cross-linkable membranes, , polymer electrolyte membranes, , supported liquid membranes, − and so on. Among all the meaningful attempts, supported liquid membranes (SLMs) based on facilitated transport mechanism are believed to be promising technologies.…”

A Novel Copper(I)-Based Supported Ionic Liquid Membrane with High Permeability for Ethylene/Ethane Separation

“…Cryogenic distillation is the primary separation method in the industry. However, this technology requires huge capital and operational cost due to the very close relative volatilities between olefins and their corresponding paraffins . Recently, several alternative technologies have been developed, such as solvent absorption, pressure-swing adsorption, and membrane separation .…”

“…However, this technology requires huge capital and operational cost due to the very close relative volatilities between olefins and their corresponding paraffins. 2 Recently, several alternative technologies have been developed, such as solvent absorption, pressure-swing adsorption, and membrane separation. 3 In particular, great attention has been paid to the reactive absorption of olefins using Ag + or Cu + , because of the formation of reversible complexation toward olefins through π-bond interaction which can easily be reversed by pressure and temperature swing.…”