Cpc Corporation, Taiwan

Amt International Inc.

Yuan-Fu Sun

Fu-Ming Lee

Kuang-Yeu Wu

Tzong-Bin Lin

Jyh-Haur Hwang

Tsung-Min Chiu

Jeng-Cheng Lee

Han-Tjen Jan

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.

Extraction process with novel solvent regeneration methods

Growing community of inventors

Chia-Yi, Taiwan

Yuan-Fu Sun