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在传统的化学法制浆过程中,植物纤维原料中的半纤维素蒸煮时会降解到蒸煮废液中,得不到有效利用。结合生物质精炼理念,可以在蒸煮前提取出部分半纤维素,提取出的半纤维素可以用于生产生物质乙醇等化学品,提取后的植物纤维原料仍用于制浆造纸。热水抽提法是目前提取半纤维素的最有效方法之一。本文对热水抽提法提取半纤维素工艺的原理、研究进展及发展前景进行了分析与综述。
In the traditional chemical pulping process, the hemicellulose in the plant fiber raw material degrades into the cooking waste liquid during cooking, and can not be effectively utilized. In combination with the concept of biomass refining, some hemicellulose can be extracted before cooking. The extracted hemicellulose can be used for the production of chemicals such as biomass ethanol. The extracted plant fiber raw materials are still used in pulp and paper making. Hot water extraction method is one of the most effective methods for extracting hemicellulose. In this paper, hot water extraction method hemicellulose extraction process, research progress and development prospects were analyzed and reviewed.