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公开(公告)号：ZA828035B
公开(公告)日：1983-09-28
申请号：ZA828035
申请日：1982-11-03
Applicant: HOECHST AG
Inventor： HECK GUENTER , LIENERTH ALADAR , MALOW EGON , SCHWARZ KARL-HEINZ , FAUST UWE
Abstract: A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130 DEG C. to 160 DEG C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.
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公开(公告)号：DK160946B
公开(公告)日：1991-05-06
申请号：DK488182
申请日：1982-11-03
Applicant: HOECHST AG
Inventor： HECK GUENTER , LIENERTH ALADAR , SCHWARZ KARL-HEINZ , FAUST UWE , MALOW EGON
Abstract: A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130 DEG C. to 160 DEG C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.
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公开(公告)号：AU554008B2
公开(公告)日：1986-08-07
申请号：AU9014382
申请日：1982-11-04
Applicant: HOECHST AG
Inventor： HECK GUNTER , LIENERTH ALADAR , MALOW EGON , SCHWARZ KARL-HEINZ , FAUST UWE
Abstract: A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130 DEG C. to 160 DEG C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.
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Patent Agency Ranking
公开(公告)号：DK488182A
公开(公告)日：1983-05-05
申请号：DK488182
申请日：1982-11-03
Applicant: HOECHST AG
Inventor： HECK GUENTER , LIENERTH ALADAR , SCHWARZ KARL-HEINZ , FAUST UWE , MALOW EGON
Abstract: A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130 DEG C. to 160 DEG C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.
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公开(公告)号：CA1191106A
公开(公告)日：1985-07-30
申请号：CA414760
申请日：1982-11-03
Applicant: HOECHST AG
Inventor： HECK GUENTER , LIENERTH ALADAR , MALOW EGON , SCHWARZ KARL-HEINZ , FAUST UWE
Abstract: of the disclosure: A process for the continuous rectification of a liquid mixture containing alcohols, in particular a fermented mash which has been substantially or completely freed from suspended substances, in an apparatus which is composed of several distillation columns linked with one another on the vapor side and which, in addition to a section used for the concentration of alcohol, can also contain a section used for the production of absolute alcohol, with the repeated utilization of the heat energy supplied on the multi-effect principle, which comprises a) distributing the liquid mixture in parallel to the distillation columns in the section of apparatus used for the concentration of alcohol, and feeding direct steam, having a temperature of 130 to 160.degree.C, to the sump of the column operated at the highest pressure; b) recovering heat energy in the form of direct steam from the top vapor of this column by means of a heat exchanger and feeding this steam, together with flash steam, formed in the sump of the same column, in a flash vessel, to the stripping section of the second column following; c) recovering direct steam in the same manner also from the top vapor of the second column and feeding this steam, together with the flash steam obtained from the sump of this column, to the third column, and, if appropriate also operating further downstream columns in this manner, the contentrated alcohol condensing in the heat exchangers being withdrawn, minus the portion refluxed, and, if appropriate being fed to a section for the production of absolute alcohol, in which d) the residual water still remaining is substantially removed from the concentrated alcohol by azeotropic distillation in one or more columns connected with one another in tandem on the vapor side.
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公开(公告)号：CA1172597A
公开(公告)日：1984-08-14
申请号：CA363606
申请日：1980-10-30
Applicant: HOECHST AG , WACKER CHEMIE GMBH
Inventor： ROSCHER GUENTER , SCHMIDT KARL-HEINZ , LANGNER HORST , NEU HERMANN , LIENERTH ALADAR , DEMPF DOMINIK , KAISER KLAUS
IPC: C07C67/055 , C07C67/54 , C07C69/15 , B01D3/36
Abstract: HOE 79/F 289 PROCESS FOR SEPARATING WATER FROM MIXTURES THEREOF WITH VINYL ACETATE AND ACETIC ACID of the disclosure: Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase and consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein a) the gas mixture leaving the reaction zone is condensed to give a condensate containing the main amount of acetic acid, of vinyl acetate and of water and b) an acetic acid solution containing the residual amount of vinyl acetate and water is prepared by absorption of the non condensed gas in acetic acid, is characterized in that c) the condensate obtained in step a) and the solution obtained in step b) are introduced separately from each other into the same distillation column, the feeding point of the condensate being above the feeding point of the solution, the water is distilled off at the head of said column as azeotrope together with the vinyl acetate and d) the water phase is removed from the distillate separating into a water phase and a vinyl acetate phase.
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公开(公告)号：ZA8208035B
公开(公告)日：1983-09-28
申请号：ZA8208035
申请日：1982-11-03
Applicant: HOECHST AG
Inventor： HECK GUENTER , LIENERTH ALADAR , MALOW EGON , SCHWARZ KARL-HEINZ , FAUST UWE
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公开(公告)号：AU9014382A
公开(公告)日：1983-05-12
申请号：AU9014382
申请日：1982-11-04
Applicant: HOECHST AG
Inventor： HECK GUNTER , LIENERTH ALADAR , MALOW EGON , SCHWARZ KARL-HEINZ , FAUST UWE
Abstract: A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130 DEG C. to 160 DEG C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.
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