公开(公告)号：US20150329477A1

公开(公告)日：2015-11-19

申请号：US14653094

申请日：2013-12-18

Applicant: BASF SE

Inventor： Ortmund LANG ,  Norbert ASPRION ,  Axel BINDER ,  Bernd METZEN ,  Christof Wilhelm WIGBERS ,  Petr KUBANEK ,  Thomas STEINHILBER

IPC: C07C231/24 ,  B01D3/42 ,  B01D3/06

CPC classification number: C07C231/24 ,  B01D3/06 ,  B01D3/42 ,  C07C231/02 ,  C07C233/05

Abstract: What is proposed is a continuous process for discharging a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates from the product mixture from the preparation of N,N-dimethylacetamide (DMAC) by reaction of methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a catalyst comprising N,N-dimethylacetamide (DMAC), methyl acetate (MeOAc), dimethylamine (DMA) and a catalyst, having the following process steps: level-regulated feeding of the product mixture as feed stream into an evaporation vessel of a forced circulation evaporator, flash evaporation of volatile components of the product mixture in the forced circulation evaporator to form a vapor phase comprising N,N-dimethylacetamide (DMAC) and precipitation of a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates, recycling of the volatile components of the product mixture obtained after the flash evaporation, removal of a vapor phase comprising N,N-dimethylacetamide (DMAC) from the evaporation vessel as output stream, concentration of the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates in the forced circulation evaporation circuit of the forced circulation evaporator, discharge of a substream comprising the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates from the forced circulation evaporation circuit of the forced circulation evaporator, solid/liquid separation of the discharged substream in at least one separation apparatus into a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates and a liquid phase, recycling of the liquid phase obtained after the solid/liquid separation into the forced circulation evaporation circuit as recycle stream, wherein the recycling of the volatile components of the product mixture obtained after the flash evaporation and of the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates into the evaporation vessel is effected via an introduction section which ends within a range from 30 cm above the level surface to 20 cm below the level surface of the fill level of the evaporation vessel.

公开(公告)号：US20150224480A1

公开(公告)日：2015-08-13

申请号：US14691663

申请日：2015-04-21

Applicant: BASF SE

Inventor： Thomas HEIDEMANN ,  Petr KUBANEK ,  Joana C. TSOU ,  Heiko BAAS

IPC: B01J23/835 ,  B01J37/08 ,  C07C213/02 ,  B01J35/00 ,  C07D295/00 ,  B01J21/04 ,  B01J37/18

CPC classification number: B01J23/835 ,  B01J21/04 ,  B01J23/14 ,  B01J23/78 ,  B01J23/83 ,  B01J23/847 ,  B01J23/888 ,  B01J23/8892 ,  B01J33/00 ,  B01J35/0006 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0203 ,  B01J37/03 ,  B01J37/031 ,  B01J37/035 ,  B01J37/06 ,  B01J37/08 ,  B01J37/086 ,  B01J37/12 ,  B01J37/16 ,  B01J37/18 ,  B01J2523/00 ,  C07C213/02 ,  C07D295/00 ,  Y02P20/582 ,  C07C217/08 ,  B01J2523/17 ,  B01J2523/31 ,  B01J2523/43 ,  B01J2523/845 ,  B01J2523/847

Abstract: The present invention relates to a process for producing a supported tin-comprising catalyst, wherein a solution (S) comprising tin nitrate and at least one complexing agent is applied to the support, where the solution (S) does not comprise any solid or has a solids content of not more than 0.5% by weight based on the total amount of dissolved components.

Abstract translation: 本发明涉及一种制备负载的含锡催化剂的方法，其中将包含硝酸锡和至少一种络合剂的溶液（S）施加到载体上，其中溶液（S）不包含任何固体或具有 基于溶解组分的总量的固体含量不超过0.5重量％。