公开(公告)号：EP1778659A1

公开(公告)日：2007-05-02

申请号：EP05773852.8

申请日：2005-07-06

申请人： BASF Aktiengesellschaft ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/32

CPC分类号： C07D301/32 ,  C07D301/12

摘要： A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising: (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation col-umn; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

公开(公告)号：EP1740562A1

公开(公告)日：2007-01-10

申请号：EP05732268.7

申请日：2005-04-19

申请人： BASF Aktiengesellschaft ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/12 ,  B01D53/14

CPC分类号： B01D53/1487 ,  Y02P20/582

摘要： The present invention relates to a method of separating an olefin from a gas stream, said gas stream comprising the olefin and at least one other component, said method comprising (i)compressing and cooling the gas stream; (ii) separating the olefin from the gas stream by absorbing the olefin in an absor-bent; (iii) separating the olefin from the absorbent by desorption; wherein compressing or cooling or compressing and cooling in (i) is carried out at least twice.

公开(公告)号：EP1841753A1

公开(公告)日：2007-10-10

申请号：EP06700597.5

申请日：2006-01-09

申请人： BASF AKTIENGESELLSCHAFT ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/12

CPC分类号： C07D301/12 ,  Y02P20/582

摘要： The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.-% of water, and a mixture (M-dii) comprising at least 90 wt.-% of water; wherein a vapor top stream (Td) obtained from at least one distillation column used in (d), said vapor top stream (Td) comprising at least 85 wt.-% methanol, is used to operate at least partially at least one vaporizer used in at least one distillation column used in at least one of stages (a), (b) and (c).

公开(公告)号：EP1765801A2

公开(公告)日：2007-03-28

申请号：EP05760069.4

申请日：2005-07-06

申请人： BASF AKTIENGESELLSCHAFT ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/32

CPC分类号： C07D301/32

摘要： A method of separating propylene oxide from a mixture (M) comprising 5 to 50 percent by weight propylene oxide and 50 to 85 percent by weight methanol, said method com-prising (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing a polar solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column at a bottoms temperature of from 40 to 70 °C and at a pressure of from 300 to 750 mbar.

摘要翻译： 一种从包含5-50重量％环氧丙烷和50-85重量％甲醇的混合物（M）中分离环氧丙烷的方法，所述方法包括（i）将所述混合物（M）引入萃取蒸馏塔中; （ii）另外将极性溶剂引入所述​​萃取蒸馏塔中; （iii）在40-70℃的底部温度和300-750毫巴的压力下从所述萃取蒸馏塔蒸馏环氧丙烷塔顶馏出物。

公开(公告)号：EP1778659B1

公开(公告)日：2008-01-02

申请号：EP05773852.8

申请日：2005-07-06

申请人： BASF Aktiengesellschaft ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/32

CPC分类号： C07D301/32 ,  C07D301/12

摘要： A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising: (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation col-umn; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

公开(公告)号：EP1841753B1

公开(公告)日：2009-08-05

申请号：EP06700597.5

申请日：2006-01-09

申请人： BASF SE ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/12

CPC分类号： C07D301/12 ,  Y02P20/582

摘要： The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.-% of water, and a mixture (M-dii) comprising at least 90 wt.-% of water; wherein a vapor top stream (Td) obtained from at least one distillation column used in (d), said vapor top stream (Td) comprising at least 85 wt.-% methanol, is used to operate at least partially at least one vaporizer used in at least one distillation column used in at least one of stages (a), (b) and (c).

公开(公告)号：EP1765801B1

公开(公告)日：2008-11-12

申请号：EP05760069.4

申请日：2005-07-06

申请人： BASF SE ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/32

CPC分类号： C07D301/32

摘要： A method of separating propylene oxide from a mixture (M) comprising 5 to 50 percent by weight propylene oxide and 50 to 85 percent by weight methanol, said method com-prising (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing a polar solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column at a bottoms temperature of from 40 to 70 °C and at a pressure of from 300 to 750 mbar.

公开(公告)号：EP1740562B1

公开(公告)日：2011-11-09

申请号：EP05732268.7

申请日：2005-04-19

申请人： BASF SE ,  THE DOW CHEMICAL COMPANY

发明人： GÖBBEL, Hans-Georg ,  SCHULTZ, Henning ,  SCHULTZ, Peter ,  PATRASCU, Renate ,  SCHULZ, Malte ,  WEIDENBACH, Meinolf

IPC分类号： C07D301/12 ,  B01D53/14

CPC分类号： B01D53/1487 ,  Y02P20/582

摘要： The present invention relates to a method of separating an olefin from a gas stream, said gas stream comprising the olefin and at least one other component, said method comprising (i)compressing and cooling the gas stream; (ii) separating the olefin from the gas stream by absorbing the olefin in an absor-bent; (iii) separating the olefin from the absorbent by desorption; wherein compressing or cooling or compressing and cooling in (i) is carried out at least twice.

公开(公告)号：EP1973620B1

公开(公告)日：2010-02-24

申请号：EP06830581.2

申请日：2006-12-13

申请人： BASF SE ,  THE DOW CHEMICAL COMPANY

发明人： DIEFENBACHER, Armin ,  GÖBBEL, Hans-Georg ,  BITTERLICH, Stefan ,  VOSS, Hartwig ,  SCHULTZ, Henning ,  FORLIN, Anna ,  PATRASCU, Renate

IPC分类号： B01D1/26 ,  B01D3/14

CPC分类号： B01D1/26 ,  B01D1/02 ,  B01D3/148 ,  B01D3/322 ,  C07C29/80 ,  Y10S159/08 ,  Y10S203/17 ,  C07C31/205

摘要： The present invention relates to a process for separating at least one propylene glycol from a mixture (M) comprising water and said propylene glycol, said process comprising (I) evaporating the mixture in at least two evaporation and/or distillation stages at decreasing operating pressures of the evaporators and/or distillation columns obtaining mixture (M') and mixture (M'); (II) separating the mixture (M') obtained in (I) in at least one further distillation step, obtaining a mixture (M-I) comprising at least 70 wt.-% of water and a mixture (M-II) comprising less than 30 wt.-% of water.

公开(公告)号：EP1973620A1

公开(公告)日：2008-10-01

申请号：EP06830581.2

申请日：2006-12-13

申请人： BASF SE ,  THE DOW CHEMICAL COMPANY

发明人： DIEFENBACHER, Armin ,  GÖBBEL, Hans-Georg ,  BITTERLICH, Stefan ,  VOSS, Hartwig ,  SCHULTZ, Henning ,  FORLIN, Anna ,  PATRASCU, Renate

IPC分类号： B01D1/26 ,  B01D3/14

CPC分类号： B01D1/26 ,  B01D1/02 ,  B01D3/148 ,  B01D3/322 ,  C07C29/80 ,  Y10S159/08 ,  Y10S203/17 ,  C07C31/205

摘要： The present invention relates to a process for separating at least one propylene glycol from a mixture (M) comprising water and said propylene glycol, said process comprising (I) evaporating the mixture in at least two evaporation and/or distillation stages at decreasing operating pressures of the evaporators and/or distillation columns obtaining mixture (M') and mixture (M'); (II) separating the mixture (M') obtained in (I) in at least one further distillation step, obtaining a mixture (M-I) comprising at least 70 wt.-% of water and a mixture (M-II) comprising less than 30 wt.-% of water.