| 摘要 |
A continuous method for the decomposition of a raw-material that contains polysaccharides by means of acid hydrolysis. The raw-material is hydrolyzed continuously in one reactor as two steps. In the first step, the hydrolysis is run in the upper part of the reactor in a vapor phase, whereby pentosans are decomposed mainly into furfural, acetic acid, methanol, and acetone, and hexosans are decomposed into disaccharides and trisaccharides. In the second step, the hydrolysis is run in the bottom part of the reactor in a liquid phase, whereby the disaccharides and trisaccharides obtained in the first step are decomposed into monosaccharides and into saccharic and fatty acids.
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