High pressure membrane separator for hydrogen purification of gas from hydrothermal treatment of biomass

被引：9
|
作者：
Cholewa, Martin [1 ]
Duerrschnabel, Robin [1 ]
Boukis, Nikolaos [2 ]
Pfeifer, Peter [1 ]
机构：
[1] KIT, Inst Micro Proc Engn IMVT, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
[2] KIT, Inst Catalysis Res & Technol IKFT, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 29期
关键词：
Porous metal supported palladium membrane; High pressure permeation; Microchannels; Pure hydrogen separation; Green hydrogen production; Biomass hydrothermal gasification; PD-BASED MEMBRANES; PALLADIUM MEMBRANES; SUPERCRITICAL WATER; COMPOSITE MEMBRANES; MASS-TRANSFER; PERMEATION; DEHYDROGENATION; GASIFICATION; METHYLCYCLOHEXANE; REACTORS;
D O I：
10.1016/j.ijhydene.2018.05.031
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
For hydrogen purification and green hydrogen production in the context of biomass hydrothermal gasification, a palladium membrane system with microchannels on feed and permeate side was studied. The high pressure in the product gas of the hydrothermal process could potentially be used to generate pressurized pure hydrogen on the permeate side. Stabilizing the membrane by an additional porous metal support, experimental verification of the concept was done at feed pressure up to 50 bar and permeate pressure up to 20 bar. The temperatures were varied between 370 degrees C and 425 degrees C. The device was found to be highly selective and efficient for pure hydrogen separation. The membrane was characterized regarding the hydrogen flux and a deviation of the permeation from Sievert's law above 30 bars feed pressure was found. Generally, the microchannels on the feed side minimized concentration polarization effects, leading to high hydrogen fluxes with hydrogen feed mixtures and with real gas samples from hydrothermal gasification. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：13294 / 13304
页数：11
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