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1. 发明授权

US3802090A Process and installation for drying fibrous cellulose materials 失效
标题翻译：干燥纤维素材料的工艺和安装
公开(公告)号：US3802090A
公开(公告)日：1974-04-09
申请号：US27350272
申请日：1972-07-20
申请人： JEUMONT SCHNEIDER
发明人： FURLAN R , DELHAYE J , VUARCHEX P
IPC分类号： D21F13/00 , F26B7/00
CPC分类号： D21F13/00
摘要： A process and an installation for drying cellulose materials. The invention consists in placing the materials in a vacuum-tight enclosure, bringing the materials in contact in vacuo with ethylene glycol diacetate injected into the enclosure after having been dried and heated initially to a temperature of from 60* to 70* C and which is raised gradually during drying to a steady end value of from 100* to 110*C, maintaining a vacuum equal to the ethylene glycol diacetate vapour pressure in the enclosure throughout drying, drying the ethylene gylcol diacetate from the enclosure by exhausters, and condensing and filtering the recovered ethylene gylcol diacetate for reinjection into the enclosure, the cycle just described being repeated until the cellulose materials are completely dry.
摘要翻译：干燥纤维素材料的工艺和安装。本发明的目的在于将材料放置在真空密封的外壳中，使材料在真空中与乙二醇二乙酸酯在被干燥和加热至60℃至70℃之间的温度下进行干燥和加热之后被真空接触，在干燥期间逐渐升高至100-110℃的稳定的最终值，保持真空度等于外壳中的乙二醇二乙酸酯蒸气压力，在整个干燥过程中，通过排气器从外壳中干燥乙二醇二乙酸酯，并冷凝和过滤回收的乙二醇二乙酸酯用于再注入外壳中，重复刚刚描述的循环直到纤维素材料完全干燥。

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