公开(公告)号：US5316654A

公开(公告)日：1994-05-31

申请号：US776179

申请日：1985-09-13

申请人： Donald C. Berkebile, deceased ,  Catherine Berkebile, Administratrix ,  Donald M. Lee ,  Larry D. Veneziano ,  Joseph J. Lauer ,  Roy E. Booth ,  William P. Hettinger ,  Willard Jones

发明人： Donald C. Berkebile, deceased ,  Catherine Berkebile, Administratrix ,  Donald M. Lee ,  Larry D. Veneziano ,  Joseph J. Lauer ,  Roy E. Booth ,  William P. Hettinger ,  Willard Jones

IPC分类号： C10C3/00 ,  C10C1/00

CPC分类号： C10C3/00

摘要： There are provided improved processes for the manufacture of enriched pitches, carbon fiber precursors, carbon fibers, and graphite fibers. The improvement comprises employing an elevated wiped-film evaporator in a wiped-film evaporator system comprising the wiped-film evaporator and a means for recovering enriched pitch, such as a positive displacement pump, to form an enriched pitch from catalytic pitch and regulating the operating conditions of the wiped-film evaporator system to provide the desired enriched pitch. The wiped-film evaporator is located a specific distance above the means for recovering enriched pitch. The vertical distance between the outlet of the wiped-film evaporator and the inlet of the means for recovering enriched pitch is within the range of about 10 feet to about 40 feet, preferably about 20 feet to about 40 feet.

摘要翻译： 提供了用于制造富集沥青，碳纤维前体，碳纤维和石墨纤维的改进方法。 该改进包括在包括刮膜蒸发器的擦拭膜蒸发器系统中采用升高的擦拭膜蒸发器和用于回收富集沥青的装置，例如正位移泵，以从催化沥青形成富集的沥青并调节操作 擦拭膜蒸发器系统的条件以提供所需的富集沥青。 擦拭膜蒸发器位于用于回收富集沥青的装置上方的特定距离处。 擦拭膜蒸发器的出口和用于回收富集沥青的装置的入口之间的垂直距离在约10英尺至约40英尺的范围内，优选约20英尺至约40英尺。