Modelling of multicomponent gas separation with asymmetric hollow fibre membranes-methane enrichment from biogas

2012 ◽  
Vol 91 (6) ◽  
pp. 1092-1102 ◽  
Author(s):  
Prodip K. Kundu ◽  
Amit Chakma ◽  
Xianshe Feng
Keyword(s):  
Gas Separation ◽  
Hollow Fibre ◽  
Multicomponent Gas

Analysis of hollow fibre membrane systems for multicomponent gas separation

2013 ◽  
Vol 91 (2) ◽  
pp. 332-347 ◽  
Author(s):  
Rajab Khalilpour ◽  
Ali Abbas ◽  
Zhiping Lai ◽  
Ingo Pinnau
Keyword(s):  
Gas Separation ◽  
Hollow Fibre ◽  
Membrane Systems ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Multicomponent Gas

Highly gas permselective polyetherketone hollow fibre membranes using aqueous sulfuric acid solution as coagulant

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Jiping Yang ◽  
Philip J Brown
Keyword(s):  
Mechanical Properties ◽  
Sulfuric Acid ◽  
Acid Solution ◽  
Gas Separation ◽  
Sulfuric Acid Solution ◽  
Hollow Fibre ◽  
Injection Rate ◽  
Fluid Injection ◽  
Aqueous Sulfuric Acid ◽  
Membrane Morphology

AbstractHollow fibre membranes with more sponge-like morphology and improved gas permeation performance were spun from 20% polyetherketone (PEK) /sulfuric acid (H2SO4) dope solution with aqueous sulfuric acid solution as coagulant using dry-jet wet spinning process. The membrane morphology, mechanical properties and gas separation performance (hydrogen, methane and carbon dioxide) of as-spun PEK hollow fibres have been measured using SEM, Instron and gas test rig. Better cross section structures and mechanical properties in as-spun PEK hollow fibres were observed when aqueous sulfuric acid solution replaced water as coagulant (internal and external). The hydrogen/methane selectivity of up to 40 and hydrogen permeation rate of 3.65 GPU obtained in PEK hollow fibre membranes using 30% sulfuric acid solution as internal and external coagulant simultaneously at the bore fluid injection rate of 30 ml/h are higher than those reported in literatures. Furthermore the effects of bore fluid injection rate and various coagulants on the membrane morphology, mechanical properties and gas separation properties were investigated, as well.

Computer Modelling Of Multicomponent Gas Separation By Membranes

1998 ◽  
pp. 23-33
Author(s):  
Thomas S.Y Choong ◽  
Ramlan Abdul Aziz ◽  
Hamdani Saidi
Keyword(s):  
Flow Pattern ◽  
Gas Separation ◽  
Computer Modelling ◽  
Cross Flow ◽  
Cocurrent Flow ◽  
Countercurrent Flow ◽  
Feed System ◽  
Membrane Area ◽  
Chemical Process Industry ◽  
Multicomponent Gas

Gas separation using membrane is now an established unit operation in the chemical process industry. The performance of a single stage membrane permeator depends, among other things, on the feed and permeate flow pattern. In this paper, models for five different idealized flow patterns namely cocurrent flow, countercurrent flow, cross flow, perfect mixing and on-side mixing have been presented. A computer program written in Power Basic has also been developed. The models developed can be used for a binary mixture or multi-component gas feed system. A simple bisection method is used instead of the Newton iterative method originally suggested by Shindo et.al.[6] to solve the root finding-problem in order to ensure convergence. In this study countercurrent flow is found to be the most efficient flow pattern, giving the highest degree of separation and requiring the least membrane area.

Modeling multicomponent gas separation using hollow-fiber membrane contactors

AIChE Journal ◽  
1998 ◽  
Vol 44 (6) ◽  
pp. 1289-1302 ◽  
Author(s):  
D. T. Coker ◽  
B. D. Freeman ◽  
G. K. Fleming
Keyword(s):  
Gas Separation ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Multicomponent Gas ◽  
Membrane Contactors
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