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:
Mar. 09, 2021
Filed:
Oct. 30, 2017
SK Innovation Co., Ltd., Seoul, KR;
SK Incheon Petrochem Co., Ltd., Incheon, KR;
Sung Ho Lee, Incheon, KR;
Dong Hyun Kim, Daejeon, KR;
Jae Yang Song, Daejeon, KR;
Joong Min Park, Daejeon, KR;
Sung Wook Jun, Incheon, KR;
SK Innovation Co., Ltd., Seoul, KR;
SK Incheon Petrochem Co., Ltd., Incheon, KR;
Abstract
Provided are a layer-separation method of a spent caustic solution, and a recycling method of an additive, and more particularly, a layer-separation method of a spent caustic solution including: injecting an additive and an acidic compound to the spent caustic solution occurring from a refinery process to break down a red oil emulsion and to perform layer-separation into an upper layer fraction and a lower layer fraction, wherein the additive is an aliphatic hydrocarbon compound having a water solubility of 0.1 to 10 g/L at 20° C.