公开(公告)号：US5011594A

公开(公告)日：1991-04-30

申请号：US285387

申请日：1988-12-16

申请人： Eckhard Haeffner ,  Hedi Ben-Nasr ,  Bernd Knuth ,  Hubert Jasper ,  Klaus Reimann

发明人： Eckhard Haeffner ,  Hedi Ben-Nasr ,  Bernd Knuth ,  Hubert Jasper ,  Klaus Reimann

IPC分类号： B01D11/00 ,  B01D11/02 ,  C10C3/08 ,  C10G21/08 ,  C10G21/14 ,  C10G31/06

CPC分类号： C10C3/08 ,  B01D11/0203 ,  Y10S208/952

摘要： A process for the continuous extraction of mixtures of organic substances including high boiling point constituents and/or constituents which do not boil but which melt with at least one solvent in the supercritical state, selected from the group consisting of CO.sub.2, propane, butane, pentane, petroleum ether, water, and having a critical temperature, T.sub.k, and a critical pressure, P.sub.k, the process including providing an extraction vessel which comprises an extraction column, the extraction column extending vertically, having a head portion at the upper end thereof and a sump portion at the lower end thereof, and having a temperature gradient which decreases with increasing height from the sump portion to the head portion, wherein the sump portion has a temperature effective to maintain extraction residue in a viscous state which permits continuous removal thereof from the sump portion, and wherein the head portion has a temperature effective to provide an optimum solution of the constituents to be extracted in the at least one solvent in the critical state; and extracting the mixture of organic substances with the at least one solvent in the supercritical state at a pressure, P, ranging from P>P.sub.k up to P T.sub.k to provide a charged fluid phase comprised of extracted substances.

摘要翻译： 一种连续萃取有机物质混合物的方法，包括高沸点组分和/或不沸腾但与超临界状态的至少一种溶剂熔融的成分的混合物，该溶剂选自二氧化碳，丙烷，丁烷，戊烷 石油醚，水，具有临界温度Tk和临界压力Pk，该方法包括提供包括萃取塔的萃取容器，萃取塔垂直延伸，在其上端具有头部， 并且具有随着从贮槽部分到头部部分的高度的增加而降低的温度梯度，其中贮槽部分具有有效地将提取残余物保持在粘性状态的温度，其允许连续地将其从 所述贮槽部分，并且其中所述头部具有有效提供所述成分的最佳溶液的温度 以在临界状态下在至少一种溶剂中萃取; 并且在超临界状态下，在P> Pk至P <400巴的压力P和至少T> Tk的温度T下，将所述有机物质与所述至少一种溶剂的混合物萃取，以提供 带电流体相由提取物质组成。

公开(公告)号：US4828702A

公开(公告)日：1989-05-09

申请号：US89109

申请日：1987-08-25

申请人： Hubert Coenen ,  Rainer Hagen ,  Klaus Reimann

发明人： Hubert Coenen ,  Rainer Hagen ,  Klaus Reimann

IPC分类号： C07B63/00 ,  A23J7/00 ,  B01D11/00 ,  B01D11/02 ,  C07B31/00 ,  C07C67/00

CPC分类号： B01D11/0203

摘要： Process for separating solid substances from liquid mixtures of substances, wherein the liquid substances contained in the mixture are separated from the solid substances by countercurrent extraction with a solvent which, during the extraction process, is in a liquid or supercritical state and which, under standard conditions, is gaseous. The solvent is fed to a cylindrical extraction chamber at the lowest point of the extraction chamber. The solvent leaves the nozzles with a Reynold's number of 40,000 and flows upward in the extraction chamber with a Reynold's number of 2,700 to 8,000.

摘要翻译： 从物质的液体混合物中分离固体物质的方法，其中混合物中所含的液体物质与固体物质通过与提取过程中处于液体或超临界状态的溶剂逆流提取分离，并且在标准下 条件是气态的。 将溶剂进料到提取室最低点处的圆柱形萃取室。 溶剂离开喷嘴，雷诺数为40,000，在萃取室中向上流动，雷诺数为2,700至8,000。