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    133.
    发明专利
    未知

    公开(公告)号：DE10060902A1

    公开(公告)日：2002-06-13

    申请号：DE10060902

    申请日：2000-12-07

    Applicant: BASF AG

    Inventor： LANGE ARNO ,  RATH HANS PETER

    IPC: B01J41/04 ,  B01J41/05 ,  C07C37/14 ,  C07C37/82 ,  C07B63/00 ,  C07C39/04 ,  C07C39/06

    Abstract: The invention relates to a method for removing aromatic hydroxy compounds from fluids that contain an aromatic hydroxy compound and at least one ring alkylation product. The method is characterized by contacting the fluid with an anion exchanger in the hydroxyl form, the aromatic hydroxy compound having a higher affinity to the anion exchanger than its ring alkylation products. The fluid from which the aromatic hydroxy compounds have been removed is then removed from the anion exchanger. The fluid used is for example a crude reaction mixture derived from the alkylation of aromatic hydroxy compounds.

    134.
    发明专利
    未知

    公开(公告)号：AT217300T

    公开(公告)日：2002-05-15

    申请号：AT98124285

    申请日：1998-12-19

    Applicant: VA TECH WABAG DEUTSCHLAND GMBH ,  KARLSRUHE FORSCHZENT

    Inventor： HAGEN KLAUS DR ,  SAUER UWE ,  SCHMID HANS-DIETER ,  SCHULTHEISS PETER ,  SAUERSCHELL WERNER ,  HOELL WOLFGANG DR ,  STEPANEK ASTRID

    IPC: B01J39/04 ,  B01J39/07 ,  B01J41/05 ,  B01J47/00 ,  B01J49/00 ,  B01J49/50 ,  B01J49/60 ,  C02F1/42

    Abstract: Partial desalination of water, especially drinking water, uses a mixture of weakly acid cation exchangers and strongly basic anion exchangers, which are regenerated and rinsed with water before re-use. The content of organic carbon compounds is also reduced during desalination and the ion exchangers are regenerated discontinuously. Partial desalination of water, especially drinking water, uses a mixture of weakly acid cation exchangers and strongly basic anion exchangers, which are regenerated with water containing carbon dioxide, optionally with addition of calcium carbonate , CaCO3/magnesium oxide or calcium hydroxide and rinsed with water before re-use. The content of organic carbon compounds is also reduced during desalination and the ion exchangers are regenerated discontinuously with hydrogen chloride, sodium chloride, sodium hydroxide or a mixture of NaCl and NaOH.

    De-nitrification process passes water through weak cation exchanger
    137.
    发明专利
    De-nitrification process passes water through weak cation exchanger 未知

    公开(公告)号：DE4445897C1

    公开(公告)日：1996-07-11

    申请号：DE4445897

    申请日：1994-12-22

    Applicant: HAGER & ELSAESSER

    Inventor： NAGEL ROLF DIPL ING

    IPC: B01J39/04 ,  B01J39/05 ,  B01J39/07 ,  B01J41/05 ,  C02F1/42

    Abstract: The novelty is that a process and assembly to remove nitrate from water incorporates the following steps: (a) water passes upwards through a cation stage (1) with first a weakly acidic cation exchanger (2) before passing through a strongly acidic cation exchanger (3) both of H-shape (the cation stage (1) can only be formed by a strong cation exchanger (3) and then upwards through an anion stage (4) with a strongly basic chloride form anion exchanger); (b) combined regeneration of the cation exchanger (2,3) to anion exchanger (5) or from anion exchanger (5) to cation exchanger (2,3), in which the cation exchanger (2) and the anion exchanger (4) are regenerated in downflow by acid, and the regeneration agent is almost fully consumed, and (c) the regeneration acid is washed out in a number of stages, first in a cation exchanger (2,3) and anion exchanger (5) in a regeneration assembly (first washing stage), then by means of the anion exchanger (5) in the regeneration assembly (first washing stage), then by means of the anion exchanger (5) in the regeneration assembly (second washing stage), and then by the cation exchanger (2,3) and anion exchanger (5) in the operating direction (third washing stage).

    De-nitrification of water
    138.
    发明专利
    De-nitrification of water 未知

    公开(公告)号：DE4445896C1

    公开(公告)日：1996-07-11

    申请号：DE4445896

    申请日：1994-12-22

    Applicant: HAGER & ELSAESSER

    Inventor： NAGEL ROLF DIPL ING

    IPC: B01J39/04 ,  B01J39/07 ,  B01J41/05 ,  B01J49/00 ,  B01J49/08 ,  C02F1/42

    Abstract: Removal of nitrate from water comprises: (a) water passing downwards through a cation stage (1) with a weak cation exchanger (2) before passing upwards through an anion stage (3) which is separate from the cation stage (1), and with a strongly basic chloride form anion exchanger; (b) combined regeneration of the cation exchanger (2) to anion exchanger (4) or from anion exchanger (4) to cation exchanger (2), in which the cation exchanger (2) and the anion exchanger (4) are regenerated in downflow by acid, and the regeneration acid is fully consumed in the cation exchanger (2); (c) the regeneration acid is washed out in a number of stages, first in a cation exchanger (2) and anion exchanger (4) in a regeneration assembly (first washing stage), then by means of the anion exchanger (4) in the regeneration assembly (second washing stage), and then by the cation exchanger (2) and anion exchanger (4) in the operating direction (third washing stage).

    139.
    发明专利
    未知

    公开(公告)号：DE4445044A1

    公开(公告)日：1996-06-13

    申请号：DE4445044

    申请日：1994-12-08

    Applicant: SCHERING AG

    Inventor： DIEHN WOLFGANG ,  TEUBERT VOLKER

    IPC: B01J39/04 ,  B01J39/05 ,  B01J39/07 ,  B01J41/05 ,  B01J47/02 ,  C02F1/42

    Abstract: The invention in essence concerns a process for producing demineralised sterile water from drinking water. The process is characterised by the fact that the drinking water is drawn through a strongly acidic monospherical cation exchanger, then through a weakly basic monospherical anion exchanger, and finally through a strongly basic monospherical anion exchanger. The invention also concerns a device for carrying out the process.

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