Membrane recovery of hydrogen from gaseous mixtures of biogenic and technogenic origin

摘要

The development of energy effective processes, intensification of chemical and petroleum refining industries, solution of environmental tasks are related with hydrogen. Introductory parts of review are focused on particularity of H-2 generation from biomass (microbiological routes and pyrolysis) and introducing with main industrial hydrogen-containing gaseous mixtures as technogenic sources. Membrane gas separation processes as lower energy consuming ones for H-2 recovery from gaseous sources which are as rule multicomponent gas mixtures are considered in this paper including: (1) estimation of unknown gas permeance of commercial and lab-scale polymeric membranes for such components as CO2, CO, N-2, CH4, H2S and calculation of standard membrane processes for H-2 recovery from multicomponent mixtures; (2) modeling of hydrogen recovery from H-2/CO2 mixtures by gas liquid membrane contactors with non-porous polymeric membranes; (3) theoretical and experimental results of hydrogen recovery from gaseous mixtures of technogenic and biogenic origin by combined membrane/PSA systems. It is shown that H-2 recovery can be successfully realized as combination of standard membrane method (H-2 preconcentrating) and PSA (H-2 conditioning). Improving of whole process requires the development of highly selective membranes. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.