PLANT FOR PRODUCING PROPYLENE OXIDE AND METHOD OF PRODUCING PROPYLENE OXIDE Russian patent published in 2024 - IPC B01J19/24 C07D301/19 C07D303/04 

FIELD: chemistry.

SUBSTANCE: present invention relates to an apparatus for producing propylene oxide by epoxidation of propylene using peroxide in the presence of titanosilicate, as well as to versions of the method of producing propylene oxide. Proposed plant comprises at least three reactors configured to store titanosilicate and feed propylene and peroxide as raw material, a feed line configured to feed a reaction material which is not yet supplied to each reactor, to each reactor, and a discharge line which is connected to each reactor and is configured to discharge the reaction mixture containing propylene oxide from each reactor. Plant also includes a switching mechanism configured to switch the state of each reactor between an operating state in which a feedstock for the reaction is fed and an epoxidation reaction is carried out, and an idle state, wherein feed of raw material for reaction is switched off, made with possibility to change reactor in idle state in turn, and also made with possibility to perform switching so that only reactors in working state are connected hydraulically, in series or in parallel, with provision of feed of raw material for reaction into reactors in working condition. Besides, the apparatus includes a sampling mechanism configured to take a portion of the reaction mixture from each discharge line connected to each reactor. Each reactor comprises a feed zone into which a reaction material is supplied, and a discharge zone from which the reaction mixture is discharged, and further comprises thermometers which measure the internal temperature of the supply zone and the discharge zone, respectively.

EFFECT: creation of installation and method of producing propylene oxide, by means of which it is possible to determine easily the catalyst replacement time for each reactor.

20 cl, 32 dwg, 2 tbl, 3 ex