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    • 7. 发明授权
    • Solvent extraction and recovery
    • 溶剂萃取和回收
    • US08048304B2
    • 2011-11-01
    • US12331248
    • 2008-12-09
    • Brian J. WaibelDavid J. LawrenceMichael Case
    • Brian J. WaibelDavid J. LawrenceMichael Case
    • B01D11/00
    • B01D3/40B01D3/007B01D11/0203B01D11/028B01D11/0296B01D11/0403B01D11/0407B01D11/0488B01D19/0057Y02B30/52Y02P70/34
    • Systems and methods for improving dense gas solvent extraction of a solute and recovery of the solvent are provided. A pressure of the solvent/solute mixture obtained from an extraction chamber is increased, e.g. with a pump, thereby providing the mixture above saturation conditions. The increased pressure provides greater solubility of the solute and less solvent being vaporized in a heat exchanger. A buildup of solute in the system is reduced, thus improving system longevity. Also, process conditions of the separation process are isolated from those of the extraction process. Accordingly, the process conditions for the separating process are maintained while the process conditions of the extraction chamber vary with ambient temperature, thus saving cost and energy. This isolation also provides an ability to use, in the gas recovery cycle, a heat pump that can be used for many applications and environmental conditions while still using a conventional refrigerant.
    • 提供了改进稠溶气萃取溶质和回收溶剂的系统和方法。 从提取室获得的溶剂/溶质混合物的压力增加,例如, 用泵,从而提供混合物在饱和条件下。 增加的压力提供更高的溶质溶解度和更少的溶剂在热交换器中蒸发。 系统中溶质的积累减少,从而提高系统寿命。 此外,分离过程的工艺条件与提取过程的工艺条件分离。 因此,当提取室的工艺条件随环境温度变化时,保持分离过程的工艺条件,从而节省成本和能量。 这种隔离还提供了在气体回收循环中使用可以在仍然使用常规制冷剂的情况下用于许多应用和环境条件的热泵的能力。
    • 8. 发明申请
    • SOLVENT EXTRACTION AND RECOVERY
    • 溶剂萃取和回收
    • US20090166175A1
    • 2009-07-02
    • US12331248
    • 2008-12-09
    • Brian J. WaibelDavid J. LawrenceMichael Case
    • Brian J. WaibelDavid J. LawrenceMichael Case
    • B01D3/40B01D3/34
    • B01D3/40B01D3/007B01D11/0203B01D11/028B01D11/0296B01D11/0403B01D11/0407B01D11/0488B01D19/0057Y02B30/52Y02P70/34
    • Systems and methods for improving dense gas solvent extraction of a solute and recovery of the solvent are provided. A pressure of the solvent/solute mixture obtained from an extraction chamber is increased, e.g. with a pump, thereby providing the mixture above saturation conditions. The increased pressure provides greater solubility of the solute and less solvent being vaporized in a heat exchanger. A buildup of solute in the system is reduced, thus improving system longevity. Also, process conditions of the separation process are isolated from those of the extraction process. Accordingly, the process conditions for the separating process are maintained while the process conditions of the extraction chamber vary with ambient temperature, thus saving cost and energy. This isolation also provides an ability to use, in the gas recovery cycle, a heat pump that can be used for many applications and environmental conditions while still using a conventional refrigerant.
    • 提供了改进稠溶气萃取溶质和回收溶剂的系统和方法。 从提取室获得的溶剂/溶质混合物的压力增加,例如, 用泵,从而提供混合物在饱和条件下。 增加的压力提供更高的溶质溶解度和更少的溶剂在热交换器中蒸发。 系统中溶质的积累减少,从而提高系统寿命。 此外,分离过程的工艺条件与提取过程的工艺条件分离。 因此,当提取室的工艺条件随环境温度变化时,保持分离过程的工艺条件,从而节省成本和能量。 这种隔离还提供了在气体回收循环中使用可以在仍然使用常规制冷剂的情况下用于许多应用和环境条件的热泵的能力。
    • 9. 发明申请
    • Energy Efficient Separation of Ethanol From Aqueous Solution
    • 从水溶液中高效分离乙醇
    • US20100069686A1
    • 2010-03-18
    • US12300694
    • 2008-05-15
    • Brian J. WaibelVal J. Krukonis
    • Brian J. WaibelVal J. Krukonis
    • C07C29/74F25J3/00
    • B01D11/0449B01D11/0457B01D11/0488B01D11/0492C07C29/86Y02P20/544Y02P20/57C07C31/08
    • The present invention provides methods and systems for extracting ethanol from an ethanol-water solution comprising (1) extracting ethanol from an ethanol-water solution with a first solvent comprising an esterified fatty acid, wherein the esterified fatty acid comprises a hydroxylated fatty acid component and an alcohol component such that the alcohol component is a C3-6 alcohol, such that the distribution coefficient for ethanol in the mixture of the ethanol-water solution and the first solvent is at least 0.02 favoring the transfer of ethanol from the ethanol-water solution to the first solvent, thereby extracting the ethanol from the ethanol-water solution into the first solvent, and (2) extracting the ethanol-enriched first solvent with carbon dioxide, such that the carbon dioxide is at a liquid or near supercritical phase, wherein the distribution coefficient for ethanol in a mixture of the first solvent and the carbon dioxide is at least 0.1 favoring the transfer of ethanol from the first solvent to the carbon dioxide.
    • 本发明提供从乙醇 - 水溶液中提取乙醇的方法和系统,其包括(1)用乙醇 - 水溶液从含有酯化脂肪酸的第一溶剂中提取乙醇,其中酯化脂肪酸包含羟基化脂肪酸组分和 醇组分使得醇组分为C 3-6醇,使得乙醇 - 水溶液和第一溶剂的混合物中乙醇的分配系数为至少0.02,有利于从乙醇 - 水溶液中转移乙醇 从而将乙醇从乙醇 - 水溶液中提取到第一溶剂中,(2)用二氧化碳萃取富含乙醇的第一溶剂,使得二氧化碳处于液体或接近超临界相,其中 在第一溶剂和二氧化碳的混合物中乙醇的分配系数至少为0.1,有利于乙醇的转移 第一溶剂至二氧化碳。