Integration of Gas Separation Membranes with IGCC Identifying the right membrane for the right job

An evaluation of CO2 and H2 selective polymeric membranes for CO2 separation in IGCC processes

“…They are applied for the purification of natural gas for a long time. They can easily be manufactured as hollow fibres or thin sheets exhibiting high area to volume ratios [4]. The disadvantage lies in the limited thermal stability (up to 200 • C) and the low selectivity [4].…”

Modeling and analysis of selected carbon dioxide capture methods in IGCC systems

“…To allow a 90% capture of CO 2 from IGCC systems, the selectivity of the membranes should not be less than 30e40 [2]. The advantage of using membranes in these systems may be the fact that the gas pressure from the membrane module is significantly higher than the atmospheric pressure (approximately 10e30 bar), which increases the driving force of the process and allows to resign from the feed gas compressor (compressor marked with C in Fig.…”

“…However, an important disadvantage of the current capture methods, including absorption with the use of amines in particular, is a significant reduction of the efficiency of the entire system after the introduction of the CCS installation; the reduction can be as large as ten percentage points [2]. It is therefore necessary to look for new, less energy-intensive methods of CO 2 separation.…”

“…Currently, the aim of the research is to ensure that the CO 2 recovery rate, i.e., the amount of carbon dioxide captured in the process compared with the amount of CO 2 produced in the process, is at least 90%, with the purity (molar share of CO 2 in the CO 2 -rich stream) at a similar or even higher level, while the increase of the electricity production cost is not higher than 10% [2,3]. However, an important disadvantage of the current capture methods, including absorption with the use of amines in particular, is a significant reduction of the efficiency of the entire system after the introduction of the CCS installation; the reduction can be as large as ten percentage points [2].…”

Origins and Evolution of Inorganic-Based and MOF-Based Mixed-Matrix Membranes for Gas Separations

“…In the petrochemical, natural gas, and fuel industry [1,2], for example, the purification of commodity gases, like propane, propylene, hydrogen, methane, and ammonia, is vital for the production of other goods like fuels (e.g., propane, hydrogen, methane) [3][4][5][6][7][8][9][10][11], polymers (e.g., polypropylene from propylene) [12][13][14][15], and fertilizers (e.g., ammonium salts) [16,17]. Recently, environmental applications for gas separations have also been explored mainly for the capture and sequestration of carbon dioxide from the burning and gasification of coal in the generation of electricity and the production of hydrogen [18][19][20].…”