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. 25, 2014
Filed:
Feb. 27, 2013
Amt International, Inc., Plano, TX (US);
Fu-Ming Lee, Plano, TX (US);
Tzong-Bin Lin, Chia-Yi, TW;
Kuang-Yeu Wu, Plano, TX (US);
Jyh-Haur Hwang, Chia-Yi, TW;
Tsung-Min Chiu, Chia-Yi, TW;
Ciputra Jap, Plano, TX (US);
Yung-Sheng Ho, Chia-Yi, TW;
AMT International, Inc., Plano, TX (US);
CPC Corporation, Taiwan, Taipei, TW;
Abstract
A method for cross connecting the lean solvent supply lines between the liquid liquid extraction (LLE) and the extractive distillation (ED) processes thereby using the LLE column as the outlet for removing accumulated heavy hydrocarbons (HCs) and polymeric materials from the solvent loop of both processes to maintain their solvent performance. The unique capabilities of the LLE column in rejecting heavy HCs from the solvent into a raffinate product stream that leaves the system enable the removal of the accumulated heavy HCs and polymeric materials from the closed solvent loop of the ED process when their lean solvent loop are cross connected. Cross connection requires minimum equipment change. In the revamped system, the solvent recovery column (SRC) in LLE process supplies lean solvent for the extractive distillation column while the SRC of the ED process supplies lean solvent for LLE column.