Exergy analysis of hydrogen production via biogas dry reforming

被引：54

作者：

Cruz, Pedro L. ^{[1
,2
]}

Navas-Anguita, Zaira ^{[1
]}

Iribarren, Diego ^{[1
]}

Dufour, Javier ^{[1
,2
]}

机构：

[1] IMDEA Energy, Syst Anal Unit, Mostoles 28935, Spain

[2] Rey Juan Carlos Univ, Chem & Environm Engn Grp, Mostoles 28933, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2018年 / 43卷 / 26期

关键词：

Biogas; Dry reforming; Exergy; Hydrogen; Process simulation; LIFE-CYCLE PERFORMANCE; BIOMASS GASIFICATION; REACTOR; CHALLENGES; CATALYSTS; METHANE;

D O I：

10.1016/j.ijhydene.2018.02.025

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：

Among the alternative pathways for hydrogen production, the use of biogas from organic waste via dry reforming of methane (DRM), water gas shift reaction and pressure swing adsorption (PSA) is often seen as an interesting option. In this work, the thermodynamic performance of this type of biohydrogen energy system additionally including a combined cycle scheme that satisfies the electricity and steam requirements of the process is evaluated through exergy analysis. The main data needed for the analysis are acquired from a predictive simulation model implemented in Aspen Plus. The system shows an exergetic efficiency of 55%, with the DRM and the power generation subsystems arising as the main sources of irreversibility. Furthermore, given the significant influence found for the PSA off gas on the thermodynamic performance of the system, two alternative process configurations based on the use of this stream are evaluated. In this regard, full recirculation of the PSA off-gas to the DRM reactor is found to improve the system's exergetic performance. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11688 / 11695

页数：8

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