公开(公告)号：US09493405B2

公开(公告)日：2016-11-15

申请号：US14941167

申请日：2015-11-13

Applicant: BASF SE

Inventor： Tim Jungkamp ,  Robert Baumann ,  Michael Bartsch ,  Gerd Haderlein ,  Hermann Luyken ,  Jens Scheidel ,  Tobias Aechtner ,  Peter Pfab ,  Petra Deckert ,  Wolfgang Siegel ,  Peter Bassler

IPC: C07C253/30 ,  C07C253/10

CPC classification number: C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

公开(公告)号：US09822067B2

公开(公告)日：2017-11-21

申请号：US15116541

申请日：2015-02-03

Applicant: BASF SE

Inventor： Hermann Luyken ,  Peter Pfab ,  Tim Jungkamp

IPC: C07C253/34

CPC classification number: C07C253/34 ,  C07C209/48 ,  C07C253/10 ,  C07C255/04 ,  C07C211/12

Abstract: The present invention relates to a process for purifying adiponitrile (ADN), wherein crude ADN is introduced into a rectification apparatus (R1). The rectification apparatus (R1) comprises a first side draw and preferably also a second side draw, the first side draw being disposed below the crude ADN introduction point and the optional second side draw being disposed above the crude ADN introduction point. The first side draw is used to draw off a gaseous stream comprising ADN while the optional second side draw is used to draw off undesired by-products such as 1-amino-2-cyanocyclopentene (ACCP) which are often generated in ADN production and consequently may be present in the crude ADN. The gaseous stream from the first side draw of (R1) is introduced into a second rectification apparatus (R2). (R2) is used to separate off ADN from remaining high boilers and any other by-products present, pure ADN being drawn off from (D2) as overhead product. It is preferable when the process according to the invention employs crude ADN from a reaction of butadiene with hydrocyanic acid (HCN).

公开(公告)号：US20160168082A1

公开(公告)日：2016-06-16

申请号：US14941167

申请日：2015-11-13

Applicant: BASF SE

Inventor： Tim Jungkamp ,  Robert BAUMANN ,  Michael BARTSCH ,  Gerd HADERLEIN ,  Hermann LUYKEN ,  Jens SCHEIDEL ,  Tobias AECHTNER ,  Peter PFAB ,  Petra DECKERT ,  Wolfgang SIEGEL ,  Peter BASSLER

IPC: C07C253/30

CPC classification number: C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

Abstract translation: 描述了制备3-戊烯腈的方法，其特征在于以下方法步骤：（a）在至少一种溶解或分散的异构化催化剂上异构化包含2-甲基-3-丁烯腈的反应物流，得到流1，其包含 至少一种异构化催化剂，2-甲基-3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，（b）蒸馏物流1，得到作为顶部产物的物流2，其包含2-甲基 -3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，以及作为底部产物的料流3，其包含至少一种异构化催化剂，（c）蒸馏物流2以获得物流4， 与流2相比，基于流2中的所有五烯丙烯的总和和作为底部产物的流5，与流2相比富含（Z）-2-甲基-2-丁烯腈的顶部产物与流2相比较 ，富含3-戊烯腈和2-甲基-3-丁烯腈，基于所有戊烯腈的总和 （d）蒸馏流5以获得作为底部产物的流6，其包含3-戊烯腈和作为顶部产物的料流7，其包含2-甲基-3-丁烯腈。