The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Feb. 26, 2003
Hidehiko Nakajima, Himeji, JP;
Yoshiyuki Harano, Hyogo, JP;
Manabu Yamada, Himeji, JP;
Daicel Chemical Industries, Ltd., Osaka-Shi, JP;
Abstract
A method comprises continuously supplying an alcohol to a pressurized reaction system, pressurizing carbon monoxide with a compressorattached to a first feed line, for continuously supplying carbon monoxide to the reaction system via a second feed linewith a reference flow rate F, and converging excess carbon monoxide in the reaction system in the first feed line via a branched circulation linefor allowing to react alcohol with carbon monoxide. The reference flow rate F in the second feed lineis a total rate of a reference consumption flow rate Fcs in the reaction and a flow rate Fin excess rate over a fluctuation consumption flow rate ΔFcv in the reaction system (F=Fcs+F, F>ΔFcv). According to the pressure fluctuation of the gaseous phase in the reaction system, the flow rate in the circulation lineis controlled to a flow rate Fr=F−ΔFcv and the feed flow rate in the first feed lineis controlled to a flow rate Fsu=Fcs+ΔFcv, for compensating a consumption rate variation in the reaction system with the feed flow rate of carbon monoxide. This ensures discharge inhibition of the gaseous reactant in a liquid phase pressurized reaction system (such as carbonylation reaction system) and effective utilization of the reactant for the reaction.