Production of bio-oil from rice straw and bamboo sawdust under various reaction conditions in a fast pyrolysis plant equipped with a fluidized bed and a char separation system

被引：0
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作者：
Jung, Su-Hwa [1 ]
Kang, Bo-Sung [1 ]
Kim, Joo-Sik [1 ]
机构：
[1] Faculty of Environmental Engineering, University of Seoul, 90 Jeonnong-Dong, Dondaemun-Gu, Seoul 130-743, Korea, Republic of
来源：
Journal of Analytical and Applied Pyrolysis | 2008年 / 82卷 / 02期
关键词：
Rice straw and bamboo sawdust were pyrolyzed in a bubbling fluidized bed equipped with a char separation system. The effects of the reaction conditions on the production of bio-oil; and the efficiency of a char removal system; were investigated. In each experiment; the mass balance was established and the products' chemical and physical characteristics were examined. To elucidate how the reaction temperature affects the production of bio-oil; experiments were conducted at a temperature range of 415-540C in the case of the rice straw and 350-510C in the case of the bamboo sawdust. In addition; the influence of the feed size; the feed rate; and the kind of fluidizing medium on the production of bio-oil with each feed was investigated. The optimal reaction temperature for the production of bio-oil was between 440 and 500C in the case of the rice straw and 405-450C in the case of the bamboo sawdust. With respect to the bamboo sawdust; the maximum bio-oil yield was above 70 wt.% of the product. In the study of the influence of the feed rate and the feed size on the production of bio-oil; a higher feed rate and a smaller feed size were found to be more effective in the production of bio-oil. Finally; the use of product gas as a fluidizing medium enhanced the production of bio-oil. The main compounds of bio-oil were phenolics; furfural; acetic acid; levoglucosan; guaiacol; and alkyl guaiacol. In addition; high-quality biooils; which contained low concentrations of alkali and alkaline earth metals; were produced due to the excellent performance of the char separation system. © 2008 Elsevier B.V. All rights reserved;
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