H2S-CO2 gas separation with ionic liquids on low ratio of H2S/CO2
Tri Partono Adhi1, Yohanes Andre Situmorang2, Haryo Pandu Winoto1
1Department of Chemical Engineering, Institut Teknologi Bandung, Labtek X, Kampus ITB, Jalan Ganesha 10, Bandung, 40132, Indonesia.
Abstract:
Acid gas removal, especially H2S and CO2, is an essential process in natural gas processing. In this research, 1-butyl-3-methylimidazolium bromide [bmim][Br] ionic liquid was analyzed as a hydrophobic solvent with has high selectivity to H2S as an environmentally friendly solvent to absorb acid gas from natural gas with low H2S/CO2 concentration in ambient temperature and pressure. The absorption performance of pure [bmim][Br] ionic liquid was compared with various amine solutions, such as monoethanolamine (MEA), triethanolamine (TEA), and methyldiethanolamine (MDEA), as well as the mixture of [bmim][Br]-MDEA with various concentration. As a result, pure [bmim][Br] ionic liquid had high selectivity to H2S compared with conventional amine solutions. In addition, the mixture of [bmim][Br]-MDEA with the mass ratio of 1:3 provided the highest H2S/CO2 selectivity of 6.2 in certain absorption conditions due to free tertiary amine attached in the cations of ionic liquids that can attract more H2S to its functional site.
More Related Videos
08:37Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection
Published on: December 10, 2015
09:08Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol
Published on: April 2, 2018
Related Concept Videos
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
High-Performance Liquid Chromatography: Elution Process
Precipitation and Co-precipitation
Gas Chromatography: Introduction
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
Size-Exclusion Chromatography
Silica particles offer advantages such as rigidity,...
High-Performance Liquid Chromatography: Introduction
In HPLC, two phases play a critical role in the separation process:
