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    Process for screening cellulose ethers
    3.
    发明授权
    Process for screening cellulose ethers 失效
    筛选纤维素醚的方法

    公开(公告)号：US5589589A

    公开(公告)日：1996-12-31

    申请号：US420070

    申请日：1995-04-11

    申请人： Manfred Sponheimer ,  Guenther Welt ,  Manfred Ziegelmayer

    发明人： Manfred Sponheimer ,  Guenther Welt ,  Manfred Ziegelmayer

    IPC分类号： B07B1/00 ,  B07B1/55 ,  C08B11/20 ,  C08B17/06 ,  C08B11/08

    CPC分类号： C08B11/20 ,  B07B1/00 ,  B07B1/55 ,  C08B17/06

    摘要： 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.

    摘要翻译： 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。

    Process for grinding and simultaneous drying of moist cellulose ether products
    4.
    发明授权
    Process for grinding and simultaneous drying of moist cellulose ether products 失效
    研磨和同时干燥湿纤维素醚产品的方法

    公开(公告)号：US4979681A

    公开(公告)日：1990-12-25

    申请号：US440590

    申请日：1989-11-22

    申请人： Reinhard Donges ,  Manfred Sponheimer ,  Gunther Welt ,  Manfred Ziegelmayer

    发明人： Reinhard Donges ,  Manfred Sponheimer ,  Gunther Welt ,  Manfred Ziegelmayer

    IPC分类号： C08B11/04 ,  B02C13/13 ,  B02C13/282 ,  B02C17/00 ,  B02C23/10 ,  B02C23/24 ,  C08B11/20 ,  C08J3/12

    CPC分类号： B02C13/282 ,  B02C17/002 ,  B02C23/24 ,  C08B11/20

    摘要： The present invention relates to a process for careful grinding and simultaneous drying of moist cellulose ether products wherein a moist cellulose ether is introduced by means of a transport gas into a circular space. The moist cellulose ether is impact-comminuted while being circulated in that space, and the product is simultaneously friction-comminuted in a direction opposite to that of the impact comminution. The peripheral speed of the comminution stages, which operate in opposite directions, is regulated to such a value that the resulting grinding energy dries the product to a predetermined residual moisture content. The ground material is conveyed by the gas stream introduced into the comminution space, and the ground material is then separated from the gas stream. If desired, the ground material is subjected to selective screening.

    摘要翻译： 本发明涉及一种湿润纤维素醚产品的仔细研磨和同时干燥的方法，其中将湿的纤维素醚通过输送气体引入到圆形空间中。 潮湿的纤维素醚在该空间中循环冲击式粉碎，并且产品在与冲击粉碎相反的方向上同时摩擦粉碎。 以相反方向操作的粉碎阶段的圆周速度被调节到使所得研磨能量将产品干燥成预定的残留水分含量的值。 研磨材料由引入粉碎空间的气流输送，然后将研磨材料与气流分离。 如果需要，对地面材料进行选择性筛选。

    Process for separating solvents used in the purification of products
    5.
    发明授权
    Process for separating solvents used in the purification of products 失效
    用于分离产品净化中使用的溶剂的方法

    公开(公告)号：US4985152A

    公开(公告)日：1991-01-15

    申请号：US380086

    申请日：1989-07-14

    申请人： Josef Hilbig ,  Guenther Welt ,  Manfred Ziegelmayer

    发明人： Josef Hilbig ,  Guenther Welt ,  Manfred Ziegelmayer

    IPC分类号： B01D11/02 ,  B01D11/04 ,  B01D33/04 ,  B01D36/00 ,  C08B11/20

    CPC分类号： C08B11/20 ,  B01D11/023 ,  B01D33/04 ,  B01D2201/085

    摘要： The present invention relates to a process and a device for selectively separating the solvents employed in the preparation and purification of products. In this connection the different solvents are removed from the product to be treated by means of mechanical separation and subsequent admission of steam, and are collected separately. As a result of this, mixing of solvents from the preparation and from the purification is avoided, so that the working up of a solvent mixture is superfluous. The proces and the device are preferably used in the process for producing starch ethers and cellulose ethers.

    摘要翻译： 本发明涉及用于选择性分离用于制备和纯化产物的溶剂的方法和装置。 在这方面，通过机械分离和随后的蒸汽入口将不同的溶剂从待处理的产品中除去，并分开收集。 因此，避免了制剂和纯化中的溶剂的混合，使得溶剂混合物的加工是多余的。 方法和装置优选用于生产淀粉醚和纤维素醚的方法中。