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:
May. 30, 2006
Filed:
Feb. 15, 2002
Hidehiko Nakajima, Himeji, JP;
Yoshiyuki Harano, Himeji, JP;
Hidehiko Nakajima, Himeji, JP;
Yoshiyuki Harano, Himeji, JP;
Daicel Chemical Industries, Ltd., Osaka, JP;
Abstract
While supplying methanol and carbon monoxide via feed linesand, respectively, to a liquid phase reaction systemincluding a carbonylation catalytic system, and maintaining a substantially constant liquid level of the reaction system, part of the reaction mixture containing the produced acetic acid is drawn out from the reaction system and supplied to a flash distillation column, and the high boiling point component, which contains the carbonylation catalytic system that has been separated by ths flash distillation, is circulated to the reaction systemby means of a circulation line. At circulation line, the flow rate is detected by a flow rate sensor Fand the temperature is detected by a temperature sensor T, and based on the detection data, a control unitis used to control the temperature of the circulated high boiling point component by means of a temperature regulating unitand thereby to suppress temperature and pressure fluctuations of the above-mentioned reaction system.