Purification of aqueous solutions of organic acids
    1.
    发明授权
    Purification of aqueous solutions of organic acids 有权
    纯化有机酸水溶液

    公开(公告)号:US07410556B1

    公开(公告)日:2008-08-12

    申请号:US10130990

    申请日:2000-11-27

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/1 or less, preferably 250 g carboxylate ions/1 or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸水溶液的方法和装置,所述水溶液的沸点在常压低于450℃,进一步具有约275g羧酸根离子/ 1或更少,优选250 g羧酸根离子/ 1个或更少,优选小于1重量%的离子杂质,基于总溶液计算。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。

    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS
    2.
    发明申请
    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS 有权
    有机酸水溶液的纯化

    公开(公告)号:US20110089016A1

    公开(公告)日:2011-04-21

    申请号:US12973775

    申请日:2010-12-20

    IPC分类号: B01D3/10 B01D3/14

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸的水溶液的方法和装置,所述水溶液的沸点在常压下小于450℃,进一步具有约275g羧酸根离子/ l或更少,优选250 g羧酸根离子/ l以下,优选小于1重量%的离子性杂质,基于总溶液计算。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。

    Purification of aqueous solutions of organic acids
    3.
    发明授权
    Purification of aqueous solutions of organic acids 有权
    纯化有机酸水溶液

    公开(公告)号:US07875153B2

    公开(公告)日:2011-01-25

    申请号:US11780388

    申请日:2007-07-19

    IPC分类号: B01D1/22 B01D3/10 B01D3/28

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which-further has approximately 275 g carboxylate ions/1 or less, preferably 250 g carboxylate ions/1 or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸的水溶液的方法和装置,所述水溶液的沸点在常压下小于450℃,其进一步具有约275g羧酸根离子/ 1或更少,优选 基于总溶液计算的250g羧酸根离子/ 1个或更少,优选小于1重量%的离子杂质。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。

    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS
    4.
    发明申请
    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS 有权
    有机酸水溶液的纯化

    公开(公告)号:US20080308402A1

    公开(公告)日:2008-12-18

    申请号:US11780388

    申请日:2007-07-19

    IPC分类号: B01D3/10

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which-further has approximately 275 g carboxylate ions/1 or less, preferably 250 g carboxylate ions/1 or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸的水溶液的方法和装置,所述水溶液的沸点在常压下小于450℃,其进一步具有约275g羧酸根离子/ 1或更少,优选 基于总溶液计算的250g羧酸根离子/ 1个或更少,优选小于1重量%的离子杂质。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。

    Method of industrial-scale purification of lactic acid
    5.
    发明授权
    Method of industrial-scale purification of lactic acid 有权
    乳酸工业级纯化方法

    公开(公告)号:US06630603B1

    公开(公告)日:2003-10-07

    申请号:US09937219

    申请日:2002-01-16

    IPC分类号: C07C5142

    CPC分类号: C07C51/43 C07C51/44 C07C59/08

    摘要: The present invention relates to a method of industrial-scale purification of lactic acid, the method including the steps of: (a) reduced-pressure distillation of a concentrated lactic acid solution having a total acid content of at least 95 wt % and a content of monomeric lactic acid of at least 80 wt %, based on the concentrated lactic acid solution, the ratio between the lactic acid enantiomers in the concentrated lactic acid solution not being equal to 1; and (b) subjecting the concentrated lactic acid solution to a crystallization to form a pure lactic acid. The invention also relates to the lactic acid or the lactic acid solution obtained via this method, and the use thereof.

    摘要翻译: 本发明涉及一种乳酸工业级纯化方法,该方法包括以下步骤:(a)将总酸含量至少为95重量%,浓度为95重量%的浓缩乳酸溶液进行减压蒸馏, 基于浓缩的乳酸溶液至少80重量%的单体乳酸,浓乳酸溶液中的乳酸对映异构体之比不等于1; 和(b)使浓缩的乳酸溶液进行结晶以形成纯的乳酸。本发明还涉及通过该方法获得的乳酸或乳酸溶液及其用途。

    Purification of aqueous solutions of organic acids
    6.
    发明授权
    Purification of aqueous solutions of organic acids 有权
    纯化有机酸水溶液

    公开(公告)号:US07879197B2

    公开(公告)日:2011-02-01

    申请号:US12104302

    申请日:2008-04-16

    IPC分类号: B01D3/02 B01D3/28

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸的水溶液的方法和装置,所述水溶液的沸点在常压下小于450℃,进一步具有约275g羧酸根离子/ l或更少,优选250 g羧酸根离子/ l以下,优选小于1重量%的离子性杂质,基于总溶液计算。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。

    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS
    7.
    发明申请
    PURIFICATION OF AQUEOUS SOLUTIONS OF ORGANIC ACIDS 有权
    有机酸水溶液的纯化

    公开(公告)号:US20080257710A1

    公开(公告)日:2008-10-23

    申请号:US12104302

    申请日:2008-04-16

    IPC分类号: B01D3/10

    摘要: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.

    摘要翻译: 本发明涉及一种纯化有机酸的水溶液的方法和装置,所述水溶液的沸点在常压下小于450℃,进一步具有约275g羧酸根离子/ l或更少,优选250 g羧酸根离子/ l以下,优选小于1重量%的离子性杂质,基于总溶液计算。 具体地说,本发明涉及在大气压低于450℃的有机酸的水溶液中以工业规模连续净化和浓缩的方法和装置。根据该方法 ,将该溶液进行两个或更多个蒸馏步骤,第一蒸馏步骤在80℃至150℃的温度和50至250毫巴的压力下进行,第二蒸馏步骤在 温度为80℃至200℃,压力为0.01至50毫巴。