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公开(公告)号：US4416606A
公开(公告)日：1983-11-22
申请号：US313199
申请日：1981-10-20
CPC分类号： C01B15/106 , B01J2/20 , C01B15/103
摘要： Provided is a new granulator for preparing granules from a powdery material by agglomerating it through a kneading action, comprising a receptacle and two screws having screw blades disposed within the receptacle in parallel alignment to ensure intermeshing of the screw blades. The novel granulator consists of a feeding zone, a kneading zone divided into an upstream section and a downstream section, and a breaking zone. In the feeding zone, the blades on the two screws are forwardly conveying blades. In the upstream section of the kneading zone, on one screw a backwardly conveying blade is first provided and a forwardly conveying blade follows, and on the other screw, a forwardly conveying blade comes first and a backwardly conveying blade follows, said alternate arrangement occurring at least once in each screw. In the downstream section of the kneading zone, the blades on both of the screws are backwardly conveying screws. In the breaking zone, a plurality of small projections are provided on the peripheral surfaces of the screw shafts. The material transferred to the kneading zone from the feeding zone gradually advances while repeating a forward movement and a backward movement in an 8-figured pattern whereby it is agglomerated. The agglomerates are then broken by the projection in the breaking zone into granules of a suitable size.
摘要翻译： 本发明提供了一种新的造粒机，用于通过捏合作用将粉末状颗粒聚集在一起，包括一个容器和两个螺丝，这些螺丝具有平行对准的位于容器内的螺旋叶片，以确保螺旋叶片相互啮合。 新型造粒机由进料区，分为上游段和下游段的混炼区，以及断裂区构成。 在进料区，两个螺钉上的叶片是向前输送叶片。 在捏合区的上游部分，在一个螺钉上，首先提供向后输送的叶片，并且向前输送叶片随之而后，另一个螺杆上的向前输送叶片首先进入，并且向后输送叶片随之而来，所述替代布置发生在 每个螺丝最少一次。 在捏合区的下游部分，两个螺钉上的叶片都是向后输送的螺钉。 在断裂区域中，在螺杆轴的周面上设置有多个小突起。 从进料区转移到捏合区的材料逐渐前进，同时以8形图案重复向前运动和向后运动，从而使其聚结。 然后，将聚集体通过破碎区域中的突起破碎成适当尺寸的颗粒。
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公开(公告)号：US4409197A
公开(公告)日：1983-10-11
申请号：US315645
申请日：1981-10-27
CPC分类号： C01B15/103
摘要： A process for producing sodium percarbonate which comprises reacting sodium carbonate with hydrogen peroxide in a working solution of sodium carbonate, hydrogen peroxide and water, said reaction being carried out in the presence of at least one N,N,N',N'-tetra(phosphonomethyl)diaminoalkane of the following formula ##STR1## wherein R is either ##STR2## and n is 0 or 1 to 4, and at least one salt selected from the group consisting of phosphates, silicates and magnesium salts.
摘要翻译： 一种生产过碳酸钠的方法，其包括在碳酸钠，过氧化氢和水的工作溶液中使碳酸钠与过氧化氢反应，所述反应在至少一种N，N，N'，N'-四 （膦酰基甲基）二氨基烷烃，其中R为“IMAGE”，n为0或1至4，以及至少一种选自磷酸盐，硅酸盐和镁盐的盐。
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公开(公告)号：US4388287A
公开(公告)日：1983-06-14
申请号：US315651
申请日：1981-10-27
CPC分类号： C01B15/103
摘要： A process for producing sodium percarbonate which comprises reacting sodium carbonate with hydrogen peroxide in the presence of a stabilizer againsts the decomposition of hydrogen peroxide in a working solution of sodium carbonate, hydrogen peroxide and water, said stabilizer being at least one N,N,N',N'-tetra(phosphonomethyl)diaminoalkane of the following formula ##STR1## wherein R is either ##STR2## and n is 0 or 1 to 4.
摘要翻译： 一种生产过碳酸钠的方法，包括在稳定剂存在下使碳酸钠与过氧化氢反应，以防止过氧化碳在碳酸钠，过氧化氢和水的工作溶液中的分解，所述稳定剂是至少一种N，N，N '，N'-四（膦酰基甲基）二氨基烷烃，其具有下式（IMA）（A），其中R为“IMAGE”，n为0或1至4。
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