The effect of pyrolysis temperature on recovery of bio-oil as distinctive stage fractions
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- 作者：Marjorie R. Rover ; Patrick A. Johnston ; Lysle E. Whitmer ; Ryan G. Smith ; Robert C. Brown
- 关键词：Biomass ; Bio-oil ; Condenser ; Fast pyrolysis ; Fluidized bed ; Stage fractions
- 刊名：Journal of Analytical and Applied Pyrolysis
- 出版年：January, 2014
- 年：2014
- 卷：105
- 期：Complete
- 页码：262-268
- 全文大小：1813 K
文摘
The goal of this study was to investigate the effect of pyrolysis temperature on the recovery of various products from the pyrolysis of red oak using a fractionating bio-oil recovery system. Within the temperature range investigated, the maximum bio-char yield of 31.1 wt% occurred at 350 掳C, the maximum bio-oil yield of 66.7 wt% occurred at 400 掳C and the maximum non-condensable gas (NCG) yield of 26.3 wt% occurred at 550 掳C. The maximum production of sugar from cellulose and hemicellulose of 13.5 wt% occurred at 450 掳C. The sugars, in the form of anhydrosugars, were condensed in stage fractions (SF) 1-2. Production of phenolic compounds was highest at 400 掳C yielding 29.4 wt% dry basis (db) with the majority collected as oligomers in SF 1-2. Moisture content was highest at 550 掳C yielding 57.9% in SF5, which is 91% of the total moisture. Gel permeation chromatography (GPC) indicated that the majority of compounds found in the heavy ends of bio-oil (SF 1-2) ranged from oligomeric monomers to tetramers.