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:
Jul. 21, 1998
Filed:
Apr. 24, 1996
Kazumasa Aso, Kawanishi, JP;
Hiroshi Matsuo, Habikino, JP;
Hideo Noda, Amagasaki, JP;
Tomoaki Takada, Tokyo, JP;
Nobuyuki Kobayashi, Tokyo, JP;
Kimura Chemical Plants Co., Ltd., Amagasaki, JP;
Kansai Chemical Engineering Co., Ltd., Amagasaki, JP;
Maruzen Petrochemical Co., Ltd., Tokyo, JP;
Abstract
A monotube or multitube 2 is coupled to a body shell 1 via tube plates 3a and 3b at both ends, so that a tube interior 4 and a tube exterior 5 of the monotube or multitube 2 are isolated from each other. A difference is made in operating pressure between the tube interior 4 and the tube exterior 5, so that one of the tube interior 4 and the tube exterior 5 is used as a lower-pressure column and the other is used as a higher-pressure column. A wall of the tube is used as a heat transfer surface, so that heat is transferred from the higher pressure side (higher temperature side) to the lower pressure side (lower temperature side). Monotubes or multitubes 2 having different diameters are connected to each other via a reducer 20, so that a monotube or multitube 2 whose diameters are varied stepwise is disposed between the tube plates 3a and 3b at the upper and lower ends, thereby increasing the column cross-sectional area as moving from the top to the bottom of the column in the enriching section (tube interior) 4, and decreasing the column cross-sectional area as moving from the top to the bottom of the column in the stripping section (tube exterior) 5.