Hydrogen-rich gas from catalytic steam gasification of municipal solid waste (MSW): Influence of steam to MSW ratios and weight hourly space velocity on gas production and composition
Hydrogen-rich gas from catalytic steam gasification of municipal solid waste (MSW): Influence of steam to MSW ratios and weight hourly space velocity on gas production and composition
复制标题
城市固体废物 (MSW) 催化蒸汽气化产生的富氢气体：蒸汽与城市固体废物的比例和重时空速对气体产量和成分的影响
DOI：
10.1016/j.ijhydene.2008.11.115
复制
发表时间：
2009-03-01
影响因子：
7.2
通讯作者：
Hu, Zhiquan
中科院分区：
文献类型：
--
作者：
He, Maoyun;Xiao, Bo;Hu, Zhiquan
以煅烧白云石为催化剂，在小型顺流式固定床反应器中对城市生活垃圾（MSW）催化水蒸气气化制取富氢气体（H2 + CO）进行了实验研究和模型化。研究了在900 ℃下，在0.39-1.04的S/M范围内，对于1.22-1.51 h（-1）范围内的重时空速（WHSV），蒸汽与MSW比率（S/M）对气体产生和组成的影响。在所研究的实验条件范围内，煅烧白云石在蒸汽存在下显示出更好的催化性能。随着S/M的增加，H2-和CO2含量增加，CO和CH 4含量急剧下降，CH 4、C2 H4和C2 H6含量相对较少，S/M的影响不明显。最高的H-2含量为53.22摩尔%，最高的H-2产率为42.98摩尔H-2/kg MSW，和最高的H-2潜在产率为59.83摩尔H-2/kg MSW，在最高的S/M水平为1.04。此外，有一个很好的协议之间的实验气体组成和相应的热力学平衡数据使用GasEq模型计算。因此，提出了一个动力学模型来描述的H-2产率和碳转化效率与S/M的变化过程中的城市生活垃圾催化水蒸气气化。实验结果与动力学模型吻合较好。(C)2008年国际氢能协会。由爱思唯尔有限公司出版。保留所有权利。
The present work deals with a study coupling experiments and modeling of catalytic steam gasification of municipal solid waste (MSW) for producing hydrogen-rich gas or syngas (H-2 + CO) with calcined dolomite as a catalyst in a bench-scale downstream fixed bed reactor. The influence of steam to MSW ratios (S/M) on gas production and composition was studied at 900 degrees C over the S/M range of 0.39-1.04, for weight hourly space velocity (WHSV) in the range of 1.22-1.51 h(-1). over the ranges of experimental conditions examined, calcined dolomite revealed better catalytic performance at the presence of steam. H-2 and CO2 contents increased with S/M increasing, while CO and CH4 contents decreased sharply, the contents of CH4, C2H4 and C2H6 were relatively small, and the influence of S/M was insignificant. The highest H-2 content of 53.22 mol%, the highest H-2 yield of 42.98 mol H-2/kg MSW, and the highest H-2 potential yield of 59.83 mol H-2/kg MSW were achieved at the highest S/M level of 1.04. Furthermore, there was a good agreement between the experimental gas composition and that corresponding to thermodynamic equilibrium data calculated using GasEq model. Consequently, a kinetic model was proposed for describing the variation of H-2 yield and carbon conversion efficiency with S/M during the catalytic steam gasification of MSW. The kinetic model revealed a good performance between experimental results and the kinetic model. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.