Invention Grant
- Patent Title: Regeneration of selective solvents for extractive processes
- Patent Title (中): 萃取过程中选择性溶剂的再生
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Application No.: US13707554Application Date: 2012-12-06
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Publication No.: US09440947B2Publication Date: 2016-09-13
- Inventor: Fu-Ming Lee , Tzong-Bin Lin , Kuang-Yeu Wu , Jyh-Haur Hwang , Jeffrey Tsung-Min Chiu , Jeng-Cheng Lee , Yu-Ming Wu , Han-Tjen Jan
- Applicant: AMT International, Inc. , CPC Corporation, Taiwan
- Applicant Address: US TX Plano TW Taipei
- Assignee: AMT International, Inc.,CPC Corporation, Taiwan
- Current Assignee: AMT International, Inc.,CPC Corporation, Taiwan
- Current Assignee Address: US TX Plano TW Taipei
- Agency: Cascio & Zervas
- Main IPC: B01D3/40
- IPC: B01D3/40 ; B01D11/04 ; C07C7/10 ; C07C15/42 ; C10G7/08 ; C10G21/16 ; C10G21/28 ; C07D333/48 ; C07C7/08 ; C10G21/27
Abstract:
Recovering a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a lean solvent stream containing the selective solvent, measurable amounts of heavy aromatic HCs, and polymeric materials that are generated in an extractive distillation (ED) or liquid-liquid extraction (LLE) process. At least a portion of the lean solvent stream is contact in a solvent clean-up zone with a slip stream from the HC feed stream of the ED or LLE process or an external stream. The HC feed stream, such as pyrolysis gasoline or reformate, contains significant amounts of benzene and at least 50% polar (aromatic) HCs and serves as a displacement agent to remove the heavy HCs and polymeric material from the lean solvent stream. A magnetic filter can be used to remove the paramagnetic contaminants from the lean solvent.
Public/Granted literature
- US20130225838A1 Regeneration of Selective Solvents for Extractive Processes Public/Granted day:2013-08-29
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