E3S Web Conf.
Volume 83, 20192018 International Symposium on Hydrogen Energy and Energy Technologies (HEET 2018)
|Number of page(s)||12|
|Published online||11 February 2019|
Study on the enhancement of hydrogen generation via biomass gasification in fluidizedbed reactors
Institute of Nuclear Energy Research, Chemistry Division, 325 Taoyuan, Taiwan ROC
2 National Chung Hsing University, Department of Forestry, 402 Taichung, Taiwan ROC
3 National Chung Hsing University, Department of Mechanical Engineering, 402 Taichung, Taiwan ROC
* Corresponding author: email@example.com (Y.-P. Chyou)
In this study, solid biomass is gasified in fluidized-bed reactors, to investigate the effect of various means on syngas composition, especially for enhancing hydrogen content in the production gas. Conventionally, air is supplied to the reactor as gasification medium, which inevitably results in a high nitrogen content in the syngas. Alternatively, steam or oxygen-rich gas can be supplied to improve the syngas characteristics. On the other hand, a so-called “indirect gasification technology” realizes the whole conversion processes in dual reactors, for combustion and gasification, respectively; moreover, solid materials are circulated through two reactors, while gaseous streams in between are separated from each other. Hence, this system features the advantage of producing near nitrogen-free syngas in the gasifier, with air as oxidant in the combustor. Baseline experiments with various operating parameters, including air equivalence ratio (ER) and temperature, were firstly performed in a 30 kWth bubbling fluidized-bed gasifier; then, trial tests were conducted with the aforementioned operational and constructional factors. The preliminary test data show positive trends for the enhancement of hydrogen generation via biomass gasification. Further efforts will be pursued to establish a data base, which would be beneficial to extensive researches on clean energy and carbon abatement technologies.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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