公开(公告)号：US4501885A

公开(公告)日：1985-02-26

申请号：US311479

申请日：1981-10-14

申请人： Fred T. Sherk ,  Janet L. Inkrott

发明人： Fred T. Sherk ,  Janet L. Inkrott

IPC分类号： C08F6/00 ,  C08F6/06

CPC分类号： C08F6/06 ,  C08F6/005

摘要： A polymerization process wherein a slurry of polymer and diluent is passed from the polymerization zone to a flash zone, then polymer solids having residual diluent carried thereon are passed to a purge zone wherein a heated noncombustible gas is used to remove additional amounts of diluent, and then the vapor purge zone is condensed and cooled to produce a vapor stream comprising said noncombustible gas and a liquid stream comprising diluent.

摘要翻译： 一种聚合方法，其中聚合物和稀释剂的浆液从聚合区段通过闪蒸区域，然后将其上载有残余稀释剂的聚合物固体送至净化区，其中使用加热的不燃气体除去附加量的稀释剂， 然后将蒸气吹扫区域冷凝并冷却以产生包含所述不可燃气体的蒸汽流和包含稀释剂的液体流。

公开(公告)号：US4368321A

公开(公告)日：1983-01-11

申请号：US298442

申请日：1981-09-01

申请人： Fred T. Sherk ,  Harry B. Hammer

发明人： Fred T. Sherk ,  Harry B. Hammer

IPC分类号： C08G75/02 ,  C08G75/06 ,  C08G85/00 ,  F16L5/00 ,  C08G75/14

CPC分类号： C08G75/025 ,  C08G75/0231

摘要： A method for dehydrating pre-polymerization mixtures in the preparation of poly(arylene sulfide) in which a reaction mixture of a sulfur source and an organic amide are contacted at a first pressure within a range of about 20 psig to about 60 psig and an initial temperature in a range of about 300.degree. F. to 400.degree. F. to form a complex of the reactants with the mixture subsequently subjected to a decrease in pressure while elevating the temperature to a second temperature at which, at the chosen pressure, essentially all water is removed from the mixture. Other compounds including bases, alkali metal carboxylates, alkali metal carbonates, lithium halides, and lithium borate can be present in the reaction mixture. Preferably the sulfur source is sodium sulfide and the organic amide is N-methylpyrrolidone.

摘要翻译： 在聚（亚芳基硫醚）的制备中使预聚合混合物脱水的方法，其中硫源和有机酰胺的反应混合物在约20psig至约60psig的范围内的第一压力下接触，并且初始 温度在约300°至400°F的范围内，以形成反应物与混合物的络合物，随后将温度降低至第二温度，在第二温度下，在所选压力下，基本上全部 从混合物中取出水。 包括碱，碱金属羧酸盐，碱金属碳酸盐，卤化锂和硼酸锂的其它化合物可以存在于反应混合物中。 优选地，硫源是硫化钠，有机酰胺是N-甲基吡咯烷酮。

公开(公告)号：US4121029A

公开(公告)日：1978-10-17

申请号：US748086

申请日：1976-12-06

申请人： Howard B. Irvin ,  Fred T. Sherk

发明人： Howard B. Irvin ,  Fred T. Sherk

IPC分类号： B01J8/00 ,  B01J19/18 ,  C08F2/00 ,  C08F10/00 ,  C08F10/06

CPC分类号： B01J19/1837 ,  B01J19/1881 ,  B01J8/007 ,  C08F10/00 ,  B01J2219/00114 ,  Y10T428/31848

摘要： A method and apparatus are provided in a pipeloop reactor system for recovery of soluble catalyst components from polymer slurry effluent into the pipe-loop reactor. The polymer slurry is collected in a wash column attached to the upper run of the loop reactor; the slurry is allowed to settle through a countercurrent flow of wash liquid, the liquid used for wash, being one in which catalyst components are soluble; the washed slurry is collected in a settling leg attached to the wash column; and wash liquid containing catalyst components is overflowed into the reactor loop. In peferred embodiments of the invention the wash liquid is subjected to auto-refrigeration before being admitted into the wash column. In another preferred embodiment unreacted monomer feed is recovered from the polymer slurry, purified, and recycled as wash liquid. In still another embodiment of the invention the flow of polymer from the reactor loop into the wash column is mechanically restricted.

摘要翻译： 在管道反应器系统中提供了一种方法和装置，用于将可溶性催化剂组分从聚合物浆料流出物回收到管道回路反应器中。 将聚合物浆料收集在连接到环管反应器的上游的洗涤塔中; 允许浆液通过洗涤液体的逆流流动，用于洗涤的液体，其中催化剂组分可溶于其中; 将洗涤的浆液收集在连接到洗涤塔上的沉降腿中; 并且含有催化剂组分的洗涤液体溢出到反应器回路中。 在本发明的优选实施方案中，洗涤液体在进入洗涤塔之前经受自动制冷。 在另一个优选实施方案中，未反应的单体进料从聚合物浆料中回收，纯化，并作为洗涤液再循环。 在本发明的另一个实施方案中，聚合物从反应器回路进入洗涤塔的流动被机械限制。

公开(公告)号：US4086288A

公开(公告)日：1978-04-25

申请号：US714934

申请日：1976-08-16

申请人： Howard B. Irvin ,  Fred T. Sherk ,  Alfred A. Hoffman, Jr.

发明人： Howard B. Irvin ,  Fred T. Sherk ,  Alfred A. Hoffman, Jr.

IPC分类号： B01D53/14 ,  C07C7/11 ,  C07C15/02 ,  C10K1/16 ,  C07C3/00 ,  C07C11/00

CPC分类号： C10K1/16 ,  B01D53/1418 ,  B01D53/1456 ,  B01D53/1493 ,  C07C15/02 ,  C07C7/11

摘要： Dimethyl formamide when used as an absorption solvent to remove acetylenes from olefin-containing gas streams acts as well as a promoter for the oxidative conversion of H.sub.2 S, COS and/or CS.sub.2, also contained in the feed stream, to elemental sulfur. Thus both acetylenes and sulfur compounds are efficiently removed from such olefin-containing gas streams as coke oven gas. Further, the loss of dimethyl formamide entrained and vaporized by the deacetylenized gas stream leaving the dimethyl formamide absorber is substantially reduced or effectively eliminated by the injection of a stream of liquid selected from the group consisting of paraffinic hydrocarbons having 4-8 carbon atoms per molecule containing at least one tertiary carbon atom per molecule and aromatic hydrocarbons having 6-10 carbon atoms per molecule above the point of injection of the dimethyl formamide solvent stream to the absorption column. This liquid stream injection is particularly advantageous when the stream is also a reactant in a downstream alkylation process.

摘要翻译： 二甲基甲酰胺当用作吸收溶剂以从含烯烃气流中除去乙炔时，以及用于将进料流中还含有的H 2 S，COS和/或CS 2氧化转化成元素硫的促进剂。 因此，乙炔和硫化合物都可以从焦炭气体这样的含烯烃气流中有效地除去。 此外，通过离开二甲基甲酰胺吸收剂的脱乙酰气流夹带和蒸发的二甲基甲酰胺的损失通过注入选自由每分子具有4-8个碳原子的链烷烃组成的组中的液体流被显着地减少或有效地消除 每分子含有至少一个叔碳原子，每分子具有6-10个碳原子的芳烃，高于注入二甲基甲酰胺溶剂流到吸收塔的点。 当流在下游烷基化方法中也是反应物时，该液体流注入是特别有利的。

公开(公告)号：US3952052A

公开(公告)日：1976-04-20

申请号：US460939

申请日：1974-04-15

申请人： Fred T. Sherk

发明人： Fred T. Sherk

IPC分类号： C07C51/41 ,  C07C51/52 ,  C07C51/01

CPC分类号： C07C51/416

摘要： The effluent of a disproportionation reactor comprising alkali metal salts of aromatic polycarboxylic acids and a dispersant is flash evaporated so as to separate the effluent into a vapor phase comprising the vaporized dispersant and a solid phase comprising the alkali metal salts of the aromatic polycarboxylic acids.

摘要翻译： 将包含芳族多元羧酸的碱金属盐和分散剂的歧化反应器的流出物闪蒸，以将流出物分离成包含蒸发的分散剂的气相和包含芳族多元羧酸的碱金属盐的固相。