公开(公告)号：CA1107758A

公开(公告)日：1981-08-25

申请号：CA293780

申请日：1977-12-22

Applicant: HOECHST AG

Inventor： SARTORIUS RUDOLF ,  STAPF HANS ,  SCHAUM HELMUT ,  SCHENK FRIEDRICH

IPC: B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C51/00 ,  C07C51/235 ,  C07C53/08 ,  C07C67/00

Abstract: PROCESS FOR THE MANUFACTURE OF ACETIC ACID of the disclosure: Acetic acid is produced by oxidizing acetaldehyde at elevated temperature in the liquid phase using oxygen or gases containing oxygen in the presence of one or more heavy metal compounds as the catalyst, and adding to the reaction mixture at the start of the addition of oxygen one or more organic peroxides which under the reaction conditions decompose, with a half-life up to 350 minutes, into free radicals in order to initiate the reaction.

公开(公告)号：MX151612A

公开(公告)日：1985-01-14

申请号：MX17820179

申请日：1979-06-22

Applicant: HOECHST AG

Inventor： STEPPICH WALTER ,  SARTORIUS RUDOLF

IPC: C07C47/06 ,  B01J27/00 ,  C07C45/00 ,  C07C45/34 ,  C07C45/78 ,  C07C45/82 ,  C07C45/83 ,  C07C47/07 ,  C07C67/00

Abstract: Process for the manufacture of acetaldehyde by reaction of ethylene and oxygen in the presence of an aqueous solution of palladium and copper chloride, in which continuously part of the latter solution is regenerated by heating it outside of the reactor. The gaseous mixture leaving the reactor is treated (a) by cooling with recycling of the condensate formed to the reactor and completion of the water portion that has not condensed during cooling, by the addition of water to the reactor, (b) by washing of the cooled gas mixture with water whereby an aqueous acetaldehyde solution is obtained, (c) by extractive distillation of this solution using water as extraction agent. Next, pure acetaldehyde is obtained as an overhead product in a further distillation step. The water demand of step (b) and optionally additionally of steps (a) and/or (c) is satisfied with the waste water obtained in the bottoms of the last distillation step and the residual waste water in each case is discharged.

公开(公告)号：CA1052315A

公开(公告)日：1979-04-10

申请号：CA219962

申请日：1975-02-13

Applicant: HOECHST AG

Inventor： SARTORIUS RUDOLF ,  STAPF HANS

IPC: C07C51/46 ,  C07C51/00 ,  C07C51/44 ,  C07C51/48 ,  C07C53/08 ,  C07C67/00 ,  B01D3/40

Abstract: PROCESS FOR PREPARING TECHNICALLY PURE ACETIC ACID BY EXTRACTIVE DISTILLATION of the disclosure: Process for preparing technically pure acetic acid from water - acetic acid mixtures by extractive distillation with N-methyl acetamide.

公开(公告)号：AU4825879A

公开(公告)日：1980-01-03

申请号：AU4825879

申请日：1979-06-21

Applicant: HOECHST AG

Inventor： STEPPICH WALTER ,  SARTORIUS RUDOLF

IPC: C07C47/06 ,  B01J27/00 ,  C07C45/00 ,  C07C45/34 ,  C07C45/78 ,  C07C45/82 ,  C07C45/83 ,  C07C47/07 ,  C07C67/00 ,  C07C45/04

Abstract: Process for the manufacture of acetaldehyde by reaction of ethylene and oxygen in the presence of an aqueous solution of palladium and copper chloride, in which continuously part of the latter solution is regenerated by heating it outside of the reactor. The gaseous mixture leaving the reactor is treated (a) by cooling with recycling of the condensate formed to the reactor and completion of the water portion that has not condensed during cooling, by the addition of water to the reactor, (b) by washing of the cooled gas mixture with water whereby an aqueous acetaldehyde solution is obtained, (c) by extractive distillation of this solution using water as extraction agent. Next, pure acetaldehyde is obtained as an overhead product in a further distillation step. The water demand of step (b) and optionally additionally of steps (a) and/or (c) is satisfied with the waste water obtained in the bottoms of the last distillation step and the residual waste water in each case is discharged.

公开(公告)号：CA1056849A

公开(公告)日：1979-06-19

申请号：CA248918

申请日：1976-03-26

Applicant: HOECHST AG

Inventor： SCHAUM HELMUT ,  SCHENK FRIEDRICH ,  SARTORIUS RUDOLF ,  VOIGT HARTMUT

IPC: B01D3/00 ,  B01J31/40 ,  C07C51/00 ,  C07C51/235 ,  C07C53/08 ,  C07C67/00 ,  C07C51/26

Abstract: PROCESS FOR PREPARING ACETIC ACID of the disclosure: Process for preparing acetic acid by oxidation of acetaldehyde with oxygen or oxygen containing gases in the presence of a catalyst based on manganese acetate, wherein the crude acetic acid and the gases formed, still containing acetalbehyde, are submitted to an after oxidation, the low-boil-ing substances are distilled off and the residue is reused as catalyst.

公开(公告)号：CA850150A

公开(公告)日：1970-08-25

申请号：CA850150D

Applicant: HOECHST AG

Inventor： ROSENBOOM HELLMUT ,  SARTORIUS RUDOLF ,  HIRSCH LOTHAR