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:
May. 19, 2015
Filed:
Apr. 03, 2013
Korea Institute of Energy Research, Daejeon, KR;
SK Energy Co., Ltd., Seoul, KR;
Jong-Nam Kim, Daejeon, KR;
Jong-Ho Park, Daejeon, KR;
Seong-Jun Lee, Daejeon, KR;
Min-Su Ko, Daejeon, KR;
Hee Tae Beum, Daejeon, KR;
Jongkee Park, Daejeon, KR;
Chang Hyun Ko, Daejeon, KR;
Sang Sup Han, Daejeon, KR;
Soon-Haeng Cho, Daejeon, KR;
KOREA INSTITUTE OF ENERGY RESEARCH, Daejeon, KR;
Abstract
A method and apparatus for the separation of C4 olefins (butene-1, trans-2-butene, cis-2-butene, etc.) and C4 paraffins (normal butane, isobutane, etc) from a C4 hydrocarbon mixed gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The apparatus includes several adsorption towers loaded with an adsorbent which selectively adsorb olefins and two distillation towers for the separation of the mixture gases of olefins/desorbents and paraffins/desorbents respectively. The basic operating process of the adsorption tower comprises an adsorption step of selectively adsorbing C4 olefin from the feeding mixture, a C4 olefin rinse step of removing a small amount of C4 paraffins adsorbed together with C4 olefins, and a desorption step of desorbing C4 olefins by using a desorbent, and further comprises pressure equalization step, concurrent depressurization step, and accumulation pressure step to increase the yield and concentration of olefins depending on the operation pressure of the adsorption tower.