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:
Jan. 18, 2011
Filed:
Dec. 12, 2008
Fu-ming Lee, Katy, TX (US);
Tzong-bin Lin, Chiayi, TW;
Jyh-haur Hwang, Dali, TW;
Hung-chung Shen, Chiayi, TW;
Kuang-yeu Wu, Plano, TX (US);
Tsung-min Chiu, Jhonghe, TW;
Zong-ying Chen, Kaohsiung, TW;
Tung-hsiung Kuo, Tainan, TW;
Yu-ming Wu, Guanmiao Township, TW;
Fu-Ming Lee, Katy, TX (US);
Tzong-Bin Lin, Chiayi, TW;
Jyh-Haur Hwang, Dali, TW;
Hung-Chung Shen, Chiayi, TW;
Kuang-Yeu Wu, Plano, TX (US);
Tsung-Min Chiu, Jhonghe, TW;
Zong-Ying Chen, Kaohsiung, TW;
Tung-Hsiung Kuo, Tainan, TW;
Yu-Ming Wu, Guanmiao Township, TW;
CPC Corporation, Taiwan, Taipei, TW;
AMT International Inc., Plano, TX (US);
Abstract
Extractive distillation processes whereby water-soluble extractive distillation (ED) solvents are regenerated and recovered employ improved operations of the extractive distillation column (EDC) so that polar hydrocarbons are recovered and purified from mixtures containing polar and less polar hydrocarbons and measurable amounts of hydrocarbons that are heavier than intended feedstock and/or polymers that are generated in the ED process. The improved process can effectively remove and recover the heavy hydrocarbons and/or remove polymer contaminants from the solvent in a closed solvent circulating loop through mild operating conditions with no additional process energy being expended. With the improved process, the overhead reflux of the EDC may be eliminated to further reduce energy consumption and to enhance the loading and performance within the upper portion of the EDC, especially when two liquid phases exists therein.