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:
Oct. 14, 2003
Filed:
Oct. 26, 2000
Applicant:
Inventors:
Noriaki Mizutani, Himeji, JP;
Yukihiro Matsumoto, Kobe, JP;
Kazuhiko Sakamoto, Himeji, JP;
Kenji Sanada, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/04 ; B01D 3/14 ; B01D 3/32 ; B01D 3/42 ; C07C 5/144 ;
U.S. Cl.
CPC ...
B01D 3/04 ; B01D 3/14 ; B01D 3/32 ; B01D 3/42 ; C07C 5/144 ;
Abstract
A distillation apparatus is provided with a distillation tower, a reboiler, a bottom outflow pipe for drawing a liquid from the bottom of the distillation tower, and a pot provided between the bottom of the distillation tower and the bottom outflow pipe. A part of the drawn liquid is discharged to the outside of the distillation apparatus while the rest is flowed to the reboiler. The pot has a cross-sectional area smaller than a cross-sectional area of the distillation tower and larger than a cross-sectional area of the bottom outflow pipe.