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:
Feb. 01, 2011
Filed:
Jul. 08, 2008
Fu-ming Lee, Katy, TX (US);
Kuang-yeu Wu, Plano, TX (US);
Tsung-min Chiu, Jhonghe, TW;
Zong-ying Chen, Kaohsiung, TW;
Jyh-haur Hwang, Dali, TW;
Tzong-bin Lin, Chiayi, TW;
Hung-chung Shen, Chiayi, TW;
Tung-hsiung Kuo, Tainan, TW;
Yu-ming Wu, Kaohsiung, TW;
Fu-Ming Lee, Katy, TX (US);
Kuang-Yeu Wu, Plano, TX (US);
Tsung-Min Chiu, Jhonghe, TW;
Zong-Ying Chen, Kaohsiung, TW;
Jyh-Haur Hwang, Dali, TW;
Tzong-Bin Lin, Chiayi, TW;
Hung-Chung Shen, Chiayi, TW;
Tung-Hsiung Kuo, Tainan, TW;
Yu-Ming Wu, Kaohsiung, TW;
CPC Corporation Taiwan, Taipei, TW;
AMT International, Inc, Plano, TX (US);
Abstract
An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid-liquid extraction and extractive distillation. Current industrial sulfolane solvent based liquid-liquid extraction processes employ a liquid-liquid extraction column, an extractive stripping column, a solvent recovery column, a raffinate wash column, and a solvent regenerator. The improved process for aromatic hydrocarbon recovery from a mixture of aromatic and non-aromatic hydrocarbons requires transformation of the extractive stripping column into a modified extractive distillation column. The revamping incorporates the unique advantages of liquid-liquid extraction and extractive distillation into one process to significantly reduce energy consumption and increase process throughput. The revamp entails essentially only piping changes and minor equipment adjustments of the original liquid-liquid extraction facility, and is therefore, reversible.