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Rapid Continuous Supercritical CO2 Extraction and Separation of Organic Compounds from Liquid Solutions
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-16 , DOI: 10.1021/acs.iecr.8b00812 Tatsuya Fujii 1 , Yasuaki Matsuo 1 , Shin-ichiro Kawasaki 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-04-16 , DOI: 10.1021/acs.iecr.8b00812 Tatsuya Fujii 1 , Yasuaki Matsuo 1 , Shin-ichiro Kawasaki 1
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An experimental apparatus was developed for rapid and continuous supercritical CO2 extraction and separation of hydrophobic organic compounds from liquid solution. The mixing of supercritical CO2 and liquid solutions in a micromixer enhances mass transfer, which enables rapid extraction of hydrophobic organic compounds. Near-equilibrium yields were obtained in about 10 s. The separation of supercritical CO2 from liquid was achieved using a newly developed separation system. In this separation system, the liquid level is controlled by the differential pressure between the head pressure and the supercritical CO2 phase. A control bulb at the outlet of the liquid line was regulated to maintain a constant differential pressure. The extraction of aqueous vanillin solution was conducted at 40 °C under pressures of 10, 15, and 20 MPa. Our results suggest that greater than 97% equilibrium was achieved in our system within the extraction time of 10 s. The extraction of a black liquor filtrate, that contains vanillin, its related compounds, and more than 5 wt % salts, was also conducted. More than 80% of the vanillin was successfully extracted to the CO2 phase.
中文翻译：
从液体溶液中快速连续超临界CO 2萃取和分离有机化合物
开发了一种用于快速连续地超临界CO 2萃取和从液体溶液中分离疏水性有机化合物的实验装置。在微混合器中将超临界CO 2和液体溶液混合可增强传质，从而能够快速提取疏水性有机化合物。在约10 s内获得了接近平衡的产量。使用新开发的分离系统可实现超临界CO 2从液体中的分离。在此分离系统中，液位由压头压力和超临界CO 2之间的压差控制阶段。调节液体管线出口处的控制球，以保持恒定的压差。香兰素水溶液的提取是在40℃，10、15和20 MPa的压力下进行的。我们的结果表明，在10 s的提取时间内，我们的系统中达到了97％以上的平衡。还进行了含有香草醛，其相关化合物和超过5 wt％盐的黑液滤液的提取。超过80％的香兰素已成功提取到CO 2相中。
更新日期：2018-04-17
中文翻译：
从液体溶液中快速连续超临界CO 2萃取和分离有机化合物
开发了一种用于快速连续地超临界CO 2萃取和从液体溶液中分离疏水性有机化合物的实验装置。在微混合器中将超临界CO 2和液体溶液混合可增强传质，从而能够快速提取疏水性有机化合物。在约10 s内获得了接近平衡的产量。使用新开发的分离系统可实现超临界CO 2从液体中的分离。在此分离系统中，液位由压头压力和超临界CO 2之间的压差控制阶段。调节液体管线出口处的控制球，以保持恒定的压差。香兰素水溶液的提取是在40℃，10、15和20 MPa的压力下进行的。我们的结果表明，在10 s的提取时间内，我们的系统中达到了97％以上的平衡。还进行了含有香草醛，其相关化合物和超过5 wt％盐的黑液滤液的提取。超过80％的香兰素已成功提取到CO 2相中。
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