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:
Feb. 03, 2026
Filed:
Sep. 01, 2020
Chiyoda Corporation, Yokohama, JP;
CHIYODA CORPORATION, Kanagawa, JP;
Abstract
A method for producing ethylene oxide includes an ethylene oxide generation step 1 in which a first mixture containing ethylene oxide is obtained by causing ethylene and oxygen to react in presence of a diluent gas; a gas-liquid separation step 2 in which the first mixture is gas-liquid separated into a second mixture containing ethylene, oxygen, and carbon dioxide and a third mixture containing ethylene oxide and water; a carbon dioxide separation step 3 in which carbon dioxide is separated from the second mixture; and an electrolytic reduction step 4 in which the carbon dioxide is electrolytically reduced to obtain a fourth mixture containing ethylene, methane, and carbon dioxide and to obtain oxygen. In the carbon dioxide separation step, carbon dioxide is separated from the fourth mixture. In the ethylene oxide generation step, the second mixture and the fourth mixture, from which carbon dioxide has been removed, and the oxygen obtained in the electrolytic reduction step are used as raw material and a diluent gas.