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. 04, 2014
Filed:
Mar. 03, 2013
Amt International, Inc., Plano, TX (US);
Cpc Corporation, Taiwan, Taipei, TW;
Fu-Ming Lee, Katy, 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;
Jeng-Cheng Lee, Chia-Yi, TW;
Han-Tjen Jan, Chia-Yi, TW;
Yuan-Fu Sun, Chia-Yi, TW;
AMT International, Inc., Plano, TX (US);
CPC Corporation, Taiwan, Taipei, TW;
Abstract
Solvent regeneration to recover a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a solvent-rich stream containing selective solvent, heavy HCs, and polymeric materials (PMs) generated from reactions among thermally decomposed or oxidized solvent, heavy HCs, and additives is provided. A combination of displacement agent and associated co-displacement agent squeezes out the heavy HCs and PMs from the extractive solvent within a solvent clean-up zone. Simultaneously, a filter equipped with a magnetic field is positioned in a lean solvent circulation line to remove paramagnetic contaminants. The presence of the co-displacement agent significantly enhances the capability of the displacement agent in removing the heavy HCs and PMs from the extractive solvent. As a result, the solvent regeneration system operates under milder conditions and minimizes or eliminates the need for including a high temperature, energy intensive and difficult-to-operate thermal solvent regenerator.