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    Process for obtaining seed hull commodities including cellulosic fibers and xylitol
    4.
    发明授权
    Process for obtaining seed hull commodities including cellulosic fibers and xylitol 失效
    获得种子壳商品的方法，包括纤维素纤维和木糖醇

    公开(公告)号：US4087316A

    公开(公告)日：1978-05-02

    申请号：US723625

    申请日：1976-09-15

    申请人： Gay M. Jividen ,  Hou-Min Chang ,  R. Heath Reeves ,  Chen-Loung Chen

    发明人： Gay M. Jividen ,  Hou-Min Chang ,  R. Heath Reeves ,  Chen-Loung Chen

    IPC分类号： C13K13/00 ,  D21C3/02 ,  D21C5/00 ,  D21C9/08

    CPC分类号： C13K13/002 ,  D21C3/026 ,  D21C5/00

    摘要： Cellulosic fibers are removed from seed hulls such as cottonseed hulls by a process including (a) in the absence of mechanical action sufficient to cause degradation of fiber properties, contacting the seed hulls which comprise both cellulosic fibers (linters and hull fibers) and non-fibrous hull components with an alkaline solution and an oxygen-containing gas until the cellulosic fibers are substantially free of the non-fibrous hull components, and (b) recovering the cellulosic fibers from the non-fibrous hull components so as to produce readily washable cellulosic fibers having substantially unimpaired mechanical properties. The cellulosic fibers may then be washed and separated according to known fiber fractionation procedures. The cellulosic fibers produced according to this improved process have substantially unimpaired mechanical properties and contain substantially no polyphenolic materials or extraneous color components. The process provides a more selective and complete removal of polyphenolic materials and extraneous color material requiring less alkali and resulting in higher carbohydrate yields than prior art processes. The process eliminates or significantly alleviates the noise and respiratory dangers of certain known mechanical delinting processes.Other seed hull commodities may also be obtained. These other seed hull commodities include hull residue containing xylan which may be further treated to produce xylose and xylitol. Xylose is produced by hydrolyzing the xylan such as by dilute sulfuric acid treatment. Xylitol may be produced by catalytically hydrogenating xylose hydrolyzate solution and then crystallizing xylitol directly from the hydrogenated hydrolyzate solution.

    摘要翻译： 纤维素纤维通过包括（a）在不存在引起纤维性能下降的机械作用的方法从种皮壳如棉籽壳中除去的过程中，使包含纤维素纤维（短纤维和船体纤维）和非纤维素纤维两者的种皮壳接触， 直到纤维素纤维基本上没有非纤维性船体部件为止，并且（b）从非纤维性船体部件回收纤维素纤维，以便制备容易洗涤的纤维素 纤维具有基本上未受损的机械性能。 然后可以根据已知的纤维分级方法洗涤和分离纤维素纤维。 根据该改进方法生产的纤维素纤维具有基本上未受损的机械性能，并且基本上不含多酚材料或外来颜色成分。 该方法提供了比现有技术方法更多选择性和完全去除多酚材料和外来色素，其需要较少的碱并导致更高的碳水化合物产量。 该过程消除或显着减轻了某些已知的机械变形过程的噪声和呼吸危险。