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:
Aug. 21, 2012
Filed:
Aug. 10, 2010
Kuang-yeu Wu, Plano, TX (US);
Tzong-bin Lin, Chiayi, TW;
Fu-ming Lee, Katy, TX (US);
Tsung-min Chiu, Jhonghe, TW;
Jyh-haur Hwang, Dali, TW;
Hung-chung Shen, Chiayi, TW;
Kuang-Yeu Wu, Plano, TX (US);
Tzong-Bin Lin, Chiayi, TW;
Fu-Ming Lee, Katy, TX (US);
Tsung-Min Chiu, Jhonghe, TW;
Jyh-Haur Hwang, Dali, TW;
Hung-Chung Shen, Chiayi, TW;
AMT International Inc., Plano, TX (US);
CPC Corporation, Taiwan, Taipei, TW;
Abstract
An improved solvent regeneration system for extractive distillation and liquid-liquid extraction processes capable of effectively removing heavy hydrocarbons and polymeric materials that otherwise develop in a closed solvent loop. The improved process employs a light hydrocarbon displacement agent, which is at least partially soluble in the solvent to squeeze the heavy hydrocarbons and polymeric materials out of the solvent, with virtually no additional energy requirement. It has been demonstrated that the light non-aromatic hydrocarbons in the raffinate stream generated from the extractive distillation or the liquid-liquid extractive process for aromatic hydrocarbons recovery can displace not only the heavy non-aromatic hydrocarbons but also the heavy aromatic hydrocarbons from the extractive solvent, especially when the aromatic hydrocarbons in the solvent are in the Cmolecular weight range.