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:
Nov. 24, 2020
Filed:
May. 27, 2020
Lg Chem, Ltd., Seoul, KR;
Jae Ik Lee, Daejeon, KR;
Eun Kyo Kim, Daejeon, KR;
Mi Kyung Kim, Daejeon, KR;
Jeong Seok Lee, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Provided is a device for preparing butadiene. The device includes an oxidative dehydrogenation reaction part, in which oxidative dehydrogenation of reaction raw materials containing butene, oxygen (O), steam, and a diluent gas is performed to obtain oxidative dehydrogenation reaction products containing butadiene; a cooling separation part for removing water from the reaction products; a condensation separation part for condensing hydrocarbons from the reaction products from which water is removed; an absorption separation part for recovering all hydrocarbons from the reaction products containing hydrocarbons not condensed in the condensation separation part; and a purification part for separating butadiene from crude hydrocarbons condensed in the condensation separation part, wherein n-butane remaining after butadiene is separated in the purification part is fed again into the oxidative dehydrogenation reaction part. The device can provide high-purity butadiene while reducing energy consumption and raw material and production costs, thereby improving economic efficiency of processes.