公开(公告)号：US4762897A

公开(公告)日：1988-08-09

申请号：US45718

申请日：1987-04-29

申请人： Tadashi Asanuma ,  Yoshiyuki Funakoshi ,  Tatuo Ohoka

发明人： Tadashi Asanuma ,  Yoshiyuki Funakoshi ,  Tatuo Ohoka

IPC分类号： C08F210/00 ,  C08F210/06 ,  C08F210/16 ,  C08F297/00 ,  C08F297/08 ,  C08F6/04 ,  C08F210/02

CPC分类号： C08F210/16 ,  C08F210/06 ,  Y10S203/19

摘要： In a copolymerization process of propylene, a mixture of unreacted propylene and ethylene is recovered. It is then fed to a distillation system which includes first and second distillation columns. The distillation system is operated in such a way that the temperature and pressure of the top of the second distillation column remain constant and an ethylene-propylene mixture can be recovered at a constant ethylene/propylene ratio from the top of the second distillation column. By using the thus-recovered ethylene-propylene mixture, the copolymerization reaction can be carried out under excellent control so that the ethylene-propylene copolymer can be obtained with uniform quality and properties.

摘要翻译： 在丙烯的共聚方法中，回收未反应的丙烯和乙烯的混合物。 然后将其送入包括第一和第二蒸馏塔的蒸馏系统。 蒸馏系统以这样的方式操作，使得第二蒸馏塔的顶部的温度和压力保持恒定，并且可以从第二蒸馏塔的顶部以恒定的乙烯/丙烯比回收乙烯 - 丙烯混合物。 通过使用如此回收的乙烯 - 丙烯混合物，可以在优异的控制下进行共聚反应，从而能够以均匀的质量和性能获得乙烯 - 丙烯共聚物。

公开(公告)号：US4659755A

公开(公告)日：1987-04-21

申请号：US746848

申请日：1985-06-20

申请人： Tadashi Asanuma ,  Tatuo Ohoka ,  Yoshiyuki Funakoshi

发明人： Tadashi Asanuma ,  Tatuo Ohoka ,  Yoshiyuki Funakoshi

IPC分类号： C08F6/00 ,  B01J19/18 ,  B01J19/24 ,  C08F6/06 ,  C08F6/24 ,  C08F10/00

CPC分类号： C08F6/24 ,  B01J19/1881 ,  B01J19/242 ,  B01J2219/00054 ,  B01J2219/00094

摘要： The method of continuously operating a counter-flow washing column which is supplied with a slurry of solid polymer particles in a diluent from a continuous polymerization zone and with washing liquid for extracting wash slurry and introducing it into a heat tube to separate the vapor of the washing liquid and the solid polymer particles.The improvement involves controlling the extraction amount of the wash slurry from the column by means of:(i) controlling the quantity of heat added to the heat tube, and further(ii) controlling the amount of liquid to be separately introduced into the heat tube,said controls (i) and (ii) being determined by monitoring the amount of the slurry in the last one of reaction cells in the continuous polymerization zone and, on the basis of the monitored amount, determining the amount of extracted slurry.When larger fluctuations occur in the production of the amount of slurry in the continuous polymerization zone, further controls are made to prevent drastic fluctuations in the ascending viscosity of the washing liquid in the counter-flow washing column, on the basis of the differences between the amount of the vapor separated by the heat tube and the amount of the liquid separately introduced into the heat tube.

摘要翻译： 连续操作反流洗涤塔的方法，其将来自连续聚合区的稀释剂中的固体聚合物颗粒的浆料供给到用于萃取洗涤浆料的洗涤液并将其引入热管中以分离出蒸气 洗涤液和固体聚合物颗粒。 改进之处在于：通过以下步骤控制洗涤浆液的提取量：（i）控制加热到热管中的热量，进一步（ii）控制分别引入热管的液体量 所述对照（i）和（ii）通过监测连续聚合区中最后一个反应池中的浆料的量并基于所监测的量确定提取的浆料的量来确定。 当在连续聚合区中浆料的量的产生中发生较大的波动时，进一步控制以防止逆流洗涤塔中的洗涤液的上升粘度的剧烈波动， 由热管分离出的蒸气量和分别引入热管的液体量。

公开(公告)号：US4725338A

公开(公告)日：1988-02-16

申请号：US832412

申请日：1986-02-24

申请人： Tadashi Asanuma ,  Tatuo Ohoka ,  Minoru Hino ,  Nobutaka Uchikawa

发明人： Tadashi Asanuma ,  Tatuo Ohoka ,  Minoru Hino ,  Nobutaka Uchikawa

IPC分类号： C08F2/00 ,  B01D3/40 ,  C08F6/00 ,  C08F6/06 ,  C08F10/00 ,  B01D3/34

CPC分类号： B01D3/40 ,  Y10S203/06 ,  Y10S203/09 ,  Y10S203/20 ,  Y10S526/912

摘要： A process for purifying a solvent suitable for use in the polymerization of an olefin in the presence of a Ziegler-Natta catalyst, which comprises feeding the polymerization solvent to a stage lower than a chimney tray of a multi-stage distillation column, said chimney tray being provided at a height between the top and bottom of the column, feeding an organoaluminum compound to a stage higher than the chimney tray, drawing out a condensate from the chimney tray, heating the condensate to produce heated vapor, introducing the heated vapor to the chimney tray or to a stage higher than the chimney tray but lower than the stage to which the organoaluminum compound has been fed, and drawing the solvent in a purified state from the top.

摘要翻译： 一种在齐格勒 - 纳塔催化剂存在下纯化适用于烯烃聚合的溶剂的方法，该方法包括将聚合溶剂进料到比多级蒸馏塔的烟囱式塔板低的阶段，所述烟囱式塔板 提供在塔的顶部和底部之间的高度，将有机铝化合物供给到高于烟囱托盘的台阶上，从烟囱托盘抽出冷凝物，加热冷凝物以产生加热的蒸汽，将加热的蒸气引入到 烟囱式塔板或高于烟囱式塔架但比有机铝化合物进料的阶段低的阶段，并从顶部抽出处于纯化状态的溶剂。

公开(公告)号：US4632976A

公开(公告)日：1986-12-30

申请号：US724635

申请日：1985-04-16

申请人： Tadashi Asanuma ,  Tatuo Ohoka ,  Nobutaka Uchikawa

发明人： Tadashi Asanuma ,  Tatuo Ohoka ,  Nobutaka Uchikawa

IPC分类号： C08F6/00 ,  C08F6/24

CPC分类号： C08F6/24

摘要： A process is provided herein wherein a solid polymer slurry diluted with a specific diluent is continuously discharged under controlled conditions from a high pressure zone to a low pressure zone substantially maintained at atmospheric pressure and the slurry is then separated into said diluent and dried polymer, the improvement wherein the discharged amount of the solid polymer slurry is strictly controlled by varying the heat in the second zone and simultaneously adding a diluent which is gaseous under normal temperature and pressure so that by the control of these two perimeters a continuous slurry discharge can be maintained at predetermined levels.

摘要翻译： 本文提供一种方法，其中用特定稀释剂稀释的固体聚合物浆料在受控条件下从高压区域连续排出至基本维持在大气压下的低压区域，然后将浆料分离成所述稀释剂和干燥聚合物， 其中固体聚合物浆料的排出量通过改变第二区域中的热量并同时加入在常温常压下为气态的稀释剂来严格控制，使得通过这两个周边的控制可以保持连续的浆料排出 在预定水平。