Energy efficient hydrogen drying and purification for fuel cell vehicles

被引：42

作者：

Ligen, Yorick ^{[1
]}

Vrubel, Heron ^{[1
]}

Girault, Hubert ^{[1
]}

机构：

[1] EPFL, LEPA, Rue Ind 17, CH-1951 Sion, Switzerland

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 18期

关键词：

Pressure swing adsorption; Alkaline electrolysis; Hydrogen; Purification; Hydrogen refuelling station; Drying; WATER; PRESSURE; QUALITY; PURITY; PSA;

D O I：

10.1016/j.ijhydene.2020.02.035

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：

High-purity standards are required for hydrogen used in fuel cell vehicles. The relative abundance of contaminants is highly influenced by the production pathway. Hydrogen obtained from water electrolysis presents three main pollutants: Nitrogen, Oxygen and Water. Herein, the engineering and implementation of removal techniques in a commercial 50 kW alkaline electrolyzer are reported. The full system was characterized with various analytical techniques including gas chromatography and mass spectrometry. A reduction of contaminant levels compatible with ISO 14687:2019 standard was achieved. From cold start, 100 min of operation are required to reach the desired nitrogen levels. Oxygen was removed in one step with a catalytic converter. Drying of hydrogen was achieved by using an innovative vacuum assisted pressure swing adsorption system. Sub-ppm levels of water are obtained with a power consumption of only 0.5 kWh/kg H-2 and 98.4% of product recovery. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10639 / 10647

页数：9

共 34 条

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