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    • 1. 发明授权
    • Process for screening cellulose ethers
    • 筛选纤维素醚的方法
    • US5589589A
    • 1996-12-31
    • US420070
    • 1995-04-11
    • Manfred SponheimerGuenther WeltManfred Ziegelmayer
    • Manfred SponheimerGuenther WeltManfred Ziegelmayer
    • B07B1/00B07B1/55C08B11/20C08B17/06C08B11/08
    • C08B11/20B07B1/00B07B1/55C08B17/06
    • A process and apparatus for screening cellulose ethers which have a finely fibrous or wad-like or woolly structure, wherein the process comprises the following steps:a) applying the cellulose ether (material to be screened) to a sieve surface,b) dividing the material to be screened into an screenable portion (acceptable size material or material passing through the sieve) and a circulating portion (oversize material or sieve surface tailings) with the aid of an agitated (preferably vibrating and/or tumbling) sieve surface,c) flushing through the agitated sieve surface from below, generally perpendicularly to the sieve surface, with an air flow,d) discharging (recovering) the acceptable size material, ande) discharging the circulating portion from the sieving system.The air flow inhibits clogging or plugging of or matting upon the sieve surface and is preferably directed upward by slit nozzles arranged below the sieve surface.
    • 一种用于筛选纤维素醚的方法和装置,所述纤维素醚具有细纤维或絮状或羊毛状结构,其中该方法包括以下步骤:a)将纤维素醚(待筛选的材料)施加到筛面上,b) 借助于搅拌(优选振动和/或翻滚)筛表面,筛选成可筛选部分(可接受尺寸的材料或通过筛子的材料)和循环部分(尺寸过大的材料或筛面尾料)的材料,c) 一般垂直于筛面从下面冲洗通过搅拌的筛面,气流,d)排出(回收)可接受尺寸的材料,以及e)从筛分系统排出循环部分。 空气流阻止筛子表面堵塞或堵塞或消除,优选地通过布置在筛面下方的狭缝喷嘴向上指向。