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. 18, 1988
Filed:
Jul. 01, 1986
Applicant:
Inventors:
Yukihiko Kakimoto, Yokohama, JP;
Masayuki Sawada, Yokohama, JP;
Yoshiaki Kajimoto, Yokohama, JP;
Isamu Kiguchi, Zushi, JP;
Assignee:
Nippon Shokubai Kagaku Kogyo Co., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 23 ; 203 25 ; 203 27 ; 203 75 ; 203 77 ; 203 78 ; 203 80 ; 203D / ; 203D / ; 203D / ; 203D / ; 549541 ;
Abstract
In the purification of ethylene oxide from an ethylene oxide-containing reaction formation gas produced by catalytic gas-phase oxidation of ethylene with a molecular oxygen containing gas, external thermal energy required for heating an ethylene oxide refiner is economized by a method which utilizes the diffusate obtained from the top of an ethylene oxide stripper as a heat source for the refiner. Further, the bottom liquid of the stripper can be used as a heat source for ethylene oxide refiner and/or a light ends stripper.