公开(公告)号：US3686229A

公开(公告)日：1972-08-22

申请号：US3686229D

申请日：1968-12-02

Applicant: BASF AG

Inventor： POEHLER GUENTER ,  SUTER HUBERT ,  WIRTH FRIEDRICH ,  WALTER JOHANN HEINRICH

IPC: C07D307/89 ,  C07C51/265 ,  C07C63/02

CPC classification number: C07C51/265 ,  C07C63/16

Abstract: CONTINUOUS PRODUCTION OF PURE PHTHALIC ANHYDRIDE BY AIR OXIDATION OF O-XYLENE WITH CERTAIN FIXED-BED SUPPORTED CATALYSTS CONTAINING VANADIUM PENTROXIDE AND TITANIUM DIOXIDE IN A SPECIFIC TUBULAR REACTOR AND BY SUBLIMATION, THERMAL TREATMENT AND CONTINUOUS DISTILLATION UNDER SPECIFIC CONDITIONS.

公开(公告)号：US3566961A

公开(公告)日：1971-03-02

申请号：US3566961D

申请日：1968-09-06

Applicant: BASF AG

Inventor： LORENZ FRIEDRICH ,  WAGNER JOACHIM ,  BETTERMANN DIETER ,  MANN WALTER ,  WALTER JOHANN HEINRICH

IPC: B01J8/06 ,  B01J19/24 ,  F28D7/16 ,  F28F9/22 ,  F28F27/02

CPC classification number: F28F27/02 ,  B01J8/062 ,  B01J19/2425 ,  B01J2208/00212 ,  B01J2208/00221 ,  B01J2208/00256 ,  F28D7/1607 ,  F28F9/22 ,  F28F2009/226 ,  Y10S165/402

Abstract: A tubular reactor with forced circulation of a heat transfer medium which flushes the outside of the reaction tubes in axial direction, the heat transfer medium being supplied to, and withdrawn from, the reactor wall uniformly through circular pipelines, and particularly the constructional shape of deflecting guide plate means arranged transversely to the direction of flow and having annular openings around the reaction tubes for uniform flow towards all the tubes of the nest of tubes.