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1. 发明授权

US5220098A Process for separating 2, 7-dimethylnaphthalene under pressure 失效
标题翻译：在压力下分离2,7-二甲基苯酚的方法
公开(公告)号：US5220098A
公开(公告)日：1993-06-15
申请号：US756792
申请日：1991-09-09
申请人： Kazumoto Nakamura , Shinji Aihara , Yutaka Mito , Masami Takao , Hitoshi Hatakeyama
发明人： Kazumoto Nakamura , Shinji Aihara , Yutaka Mito , Masami Takao , Hitoshi Hatakeyama
IPC分类号： C07C7/14 , C07C15/24
CPC分类号： C07C7/14
摘要： The present invention relates to a process for separating 2,7-DMN, characterized in that a mixture containing at least 50% by weight of 2,7-DMN and the other DMN isomers obtained by preliminarily concentrating a fraction in the range of 250.degree.-270.degree. C. of catalytically cracked petroleum oil is preliminarily adjusted to a temperature of 60.degree.-90.degree. C. to form a slurry containing the crystal of 2,7-DMN, which is placed in a tightly sealed pressure vessel, adiabatically pressurized to the range of 500-2,500 kgf/cm.sup.2 and solidified to form a state of co-existing of solid and liquid phases, liquid is then discharged under pressure from the solid-liquid co-existing system, the solid remaining in the vessel is pressed to discharge the liquid remaining between the solid particles, which are integrated to give 2,7-DMN having a purity of 98% by weight or more.

2. 发明授权

US4459842A Roll wear testing method and apparatus therefor 失效
标题翻译：辊磨损试验方法及其设备
公开(公告)号：US4459842A
公开(公告)日：1984-07-17
申请号：US319721
申请日：1981-11-09
申请人： Junji Kihara , Keiji Watabe , Kouichi Douya , Kazumoto Nakamura , Shouzo Takeuchi
发明人： Junji Kihara , Keiji Watabe , Kouichi Douya , Kazumoto Nakamura , Shouzo Takeuchi
IPC分类号： B21B28/00 , G01B7/34 , G01N3/56 , B21C51/00 , B21B37/12
CPC分类号： B21B28/00 , G01B7/34 , G01N3/56
摘要： The present invention relates to an apparatus suitable for accomplishing a roll testing method. The object of the present invention is accomplished by hot rolling steel strip under the specified rolling condition using small size testing apparatus having about a tenth size of the actual rolling mill and good reciprocity like said rolling mill. The wear state (roughness), or new state, of the roll surface is estimated by a known type of surface roughness meter from the roll surface generated after hot-rolling the stell strip by the small size testing apparatus of the present invention. Said testing apparatus has the structure in which both the diameter of the rolls and the circumferential speed of the rolls are about a tenth of those of actual rolling mill and the number of the contact times (contact interval) between the rolls and the stell strip per the rolling time is the same to that of the actual rolling mill.
摘要翻译：本发明涉及一种适用于实现卷测试方法的设备。本发明的目的是通过使用具有实际轧机的十分之一的小型测试装置和所述轧机的良好的往复性，在特定的轧制条件下热轧钢带。辊表面的磨损状态（粗糙度）或新状态通过已知类型的表面粗糙度计从本发明的小尺寸测试装置热轧该条带之后产生的辊表面估计。所述测试装置具有这样的结构，其中辊的直径和辊的圆周速度都是实际轧机的十分之一，并且轧辊和条带之间的接触时间（接触间隔）数量轧制时间与实际的轧机相同。

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