Hydrogen production from low temperature supercritical water Co-Gasification of low rank lignites with biomass

被引：24
作者：
Faki, Ender [1 ]
Uzden, Sefika Turker [1 ]
Secer, Acelya [1 ]
Hasanoglu, Arif [1 ]
机构：
[1] Cukurova Univ, Dept Chem, TR-01330 Adana, Turkey
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 12期
关键词：
Hydrogen; Sorghum; Coal; Supercritical water co-gasification; FLUIDIZED-BED; LIGNOCELLULOSIC BIOMASS; STEAM GASIFICATION; CHAR GASIFICATION; SORGHUM BIOMASS; METAL CATALYSTS; FIXED-BED; REACTIVITY; ALKALI; TRANSFORMATION;
D O I：
10.1016/j.ijhydene.2021.12.125
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：
Co-gasification of low rank lignite (can) with sorghum energy crop was investigated under low temperature conditions with supercritical water (773 K, 26.9 MPa). The effects of the water volume in the reactor, blending ratios of the coal/sorghum mixtures, the use of different catalysts, and the variation of feedstock concentrations on the gasification efficiency, product distribution, and hydrogen yields were evaluated. Synergistic effects were observed for both the gasification efficiency and the hydrogen yield with a coal content of 25 wt% in the coal/biomass mixture. Increasing the initial water volume, decreasing the feedstock concentration, and using the alkali metal catalysts Na2CO3 and K2CO3 significantly increased the gasification efficiency and the hydrogen yield. In experiments with CaO, almost all the carbon dioxide formed was isolated from the gas product during gasification, and the hydrogen yield was more than 70%. The liquid products were mainly composed of alkylphenols and their derivatives. (C) 2021 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
引用
收藏
页码：7682 / 7692
页数：11
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