公开(公告)号：US20160060460A1

公开(公告)日：2016-03-03

申请号：US14786651

申请日：2014-04-15

Applicant: INVISTA TECHNOLOGIES S.À. R.L.

Inventor： Robert J. WELCH

IPC: C08L77/06 ,  G01N27/416 ,  G01N33/44

CPC classification number: C08L77/06 ,  C07C51/412 ,  C08G69/28 ,  G01N27/4167 ,  G01N33/442 ,  Y02P20/582 ,  C07C55/14 ,  C07C55/02

Abstract: A process for producing a partially balanced acid solution that involves metering dicarboxylic acid powder, based on weight, from a loss-in-weight feeder to a feeding conduit that transfers the dicarboxylic acid powder at a low variability feed rate into an in-line disperser, adding a first feed stream of diamine to the in-line disperser in an amount sufficient to form the partially balanced acid solution having a solids content of less than 60%, and storing the partially balanced acid solution at a temperature to maintain the dissolved dicarboxylic acid and to prevent formation of a slurry. The partially balanced acid solution may be used as a feed solution to prepare a nylon salt solution. Process controls for the process are also disclosed.

Abstract translation: 一种制备部分平衡的酸溶液的方法，其涉及将二羧酸粉末以重量计从重量损失进料器计量到以低变异性进料速率将二羧酸粉末转移到在线分散器中的进料管道 将二胺的第一进料流以足以形成固体含量小于60％的部分平衡的酸溶液的量向在线分散器中加入，并将部分平衡的酸溶液储存在保持溶解的二羧酸的温度 酸，并防止淤浆的形成。 部分平衡的酸溶液可以用作进料溶液以制备尼龙盐溶液。 还公开了该方法的过程控制。

公开(公告)号：US20160168081A1

公开(公告)日：2016-06-16

申请号：US14904726

申请日：2014-07-16

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： Sudhir N.V.K. AKI ,  James M. GARNER ,  William J. TENN ,  Thomas E. VOS

IPC: C07C253/10 ,  C07C253/34 ,  B01D3/14 ,  B01J31/18

Abstract: A solvent is at least partially separated from a catalyst. The catalyst comprises nickel and a bidentate phosphorus-containing ligand. The method for separation involves distilling a catalyst solution. The ratio of 2-pentenenitrile to 3-pentenenitrile in distillation column bottoms is controlled to reduce the amount of 3-pentenenitrile which is isomerized to form 2-methyl-3-butenenitrile. Isomerization of 3-pentenenitrile to 2-methyl-3-butenenitrile and subsequent isomerization of 2-methyl-3-butenenitrile to 2-methyl-2-butenenitrile, and/or hydrocyanation of 2-methyl-3-butenenitrile to methylglutaronitrile represents a loss in adiponitrile yield in a process for making adiponitrile.

Abstract translation: 溶剂至少部分地与催化剂分离。 该催化剂包括镍和二齿含磷配体。 分离方法包括蒸馏催化剂溶液。 控制蒸馏柱底部中2-戊烯腈与3-戊烯腈的比例，以减少异构化形成2-甲基-3-丁烯腈的3-戊烯腈的量。 3-戊烯腈异构化为2-甲基-3-丁烯腈，随后将2-甲基-3-丁烯腈异构化为2-甲基-2-丁烯腈，和/或2-甲基-3-丁烯腈氢化为甲基戊二烯代表损失 在己二腈的制备方法中的己二腈产率。