公开(公告)号：US4883515A

公开(公告)日：1989-11-28

申请号：US102350

申请日：1987-09-29

申请人： Yuv R. Mehra ,  Freylon B. Coffey

发明人： Yuv R. Mehra ,  Freylon B. Coffey

IPC分类号： B01D53/14 ,  C01B3/52 ,  C01B21/04 ,  C07C7/11 ,  C10G5/04 ,  C10L3/10

CPC分类号： C10L3/10 ,  B01D53/1487 ,  B01D53/1493 ,  C01B21/0488 ,  C01B3/52 ,  C07C7/11 ,  C10G5/04 ,  C01B2210/007 ,  C10G2300/1025

摘要： A continuous process is disclosed for separating components of a hydrocarbon gas stream which are selected from the group consisting of methane, ethane, higher saturated hydrocarbons, and mixtures thereof by countercurrently contacting the hydrocarbon gas stream with a physical solvent selected from the group consisting of:(1) paraffinic solvents having molecular weights ranging from 75 to 140 and UOP characterization factors ranging from 12.0 to 13.5, these factors being independent of the aromatic content of the paraffinic solvents,(2) naphthenic solvents having molecular weights ranging from 75 to 130 and UOP characterization factors ranging from 10.5 to 12.0, these factors being independent of the aromatic content of the naphthenic solvents, and(3) benzene and toluene,to produce an overhead stream which is rich in methane and a rich solvent bottoms stream and then recovering the lean physical solvent and a C.sub.2 + hydrocarbons product from the rich solvent bottoms stream and recycling the recovered solvent stream to the contacting step.

摘要翻译： 公开了一种连续的方法，用于通过将烃气流与选自以下的物理溶剂逆流接触来分离选自甲烷，乙烷，较高级饱和烃及其混合物的烃气流的组分： （1）分子量范围为75至140，UOP表征因子范围为12.0至13.5的石蜡溶剂，这些因素与石蜡溶剂的芳族含量无关，（2）分子量范围为75至130的环烷烃溶剂和 UOP表征因子范围为10.5〜12.0，这些因素与环烷溶剂的芳香族含量无关，（3）苯和甲苯，产生富含甲烷和富溶剂塔底物流的塔顶物流，然后回收 稀的物理溶剂和来自富溶剂底部物流和回收物的C2 +烃产物 将回收的溶剂流转移到接触步骤。

公开(公告)号：US5529667A

公开(公告)日：1996-06-25

申请号：US347622

申请日：1994-12-01

申请人： Freylon B. Coffey

发明人： Freylon B. Coffey

IPC分类号： C07D301/32 ,  B01D3/38

CPC分类号： C07D301/32 ,  Y10S203/90

摘要： In an improved process for recovering ethylene oxide from an aqueous ethylene oxide solution further containing formaldehyde is provided wherein the impure aqueous ethylene oxide solution is introduced into a distillation zone as a feed stream and undergoes distillation therein to form an ethylene oxide product sidestream and an aqueous bottoms product, water is added to the distillation zone to absorb formaldehyde vapor into a liquid phase and combines with the formaldehyde vapor to form an apparent azeotrope, and removing the apparent azeotrope from the column, the improvement is that all or part of the water is a recycled aqueous stream originating from the aqueous bottoms product and introduced to the distillation zone above the feed stream.

摘要翻译： 提供了一种从进一步含有甲醛的环氧乙烷水溶液中回收环氧乙烷的改进方法，其中将不纯的环氧乙烷水溶液作为进料流引入蒸馏区，并在其中进行蒸馏以形成环氧乙烷产物侧流 底部产物，将水加入到蒸馏区中以将甲醛蒸气吸收到液相中，并与甲醛蒸气结合以形成表观共沸物，并从柱中除去表观共沸物，改进之处在于全部或部分水为 源自水底产物的再循环水流，并引入进料流上方的蒸馏区。

公开(公告)号：US4339596A

公开(公告)日：1982-07-13

申请号：US94425

申请日：1979-11-15

申请人： Freylon B. Coffey ,  Norbert F. Cywinski

发明人： Freylon B. Coffey ,  Norbert F. Cywinski

IPC分类号： C07C55/02 ,  C02F1/04 ,  C02F1/26 ,  C02F9/00 ,  C07C51/00 ,  C07C51/493 ,  C07C67/00 ,  B01D3/34 ,  C07C67/08

CPC分类号： C07C51/493 ,  C02F1/048 ,  C02F1/26 ,  C02F2103/36

摘要： In one embodiment, this invention provides a process for converting a dilute aqueous filtrate byproduct stream from adipic acid manufacture into a concentrated methanolic solution which does not solidify at ambient temperatures.In another embodiment, this invention provides an improved process for the separation and recovery of byproducts associated with the isolation of C.sub.4 -C.sub.6 dicarboxylic acids contained in a waste byproduct stream derived from an adipic acid manufacturing operation involving nitric acid oxidation of a cyclohexanone/cyclohexanol feedstream in the presence of a catalyst.

摘要翻译： 在一个实施方案中，本发明提供了将来自己二酸生产的稀水水溶液副产物流转化成在环境温度下不固化的浓缩甲醇溶液的方法。 在另一个实施方案中，本发明提供了用于分离和回收与分离来源于己二酸生产操作的废物副产物流中包含的C4-C6二羧酸相关的副产物的改进方法，其涉及环己酮/环己醇进料流的硝酸氧化 在催化剂存在下。