Crystallisation process for producing highly concentrated hydrogen peroxide

    公开(公告)号:AU2173902A

    公开(公告)日:2002-06-11

    申请号:AU2173902

    申请日:2001-10-24

    Applicant: DEGUSSA

    Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

    CRYSTALLISATION PROCESS FOR PRODUCING HIGHLY CONCENTRATED HYDROGEN PEROXIDE

    公开(公告)号:PL361835A1

    公开(公告)日:2004-10-04

    申请号:PL36183501

    申请日:2001-10-24

    Applicant: DEGUSSA

    Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

    CRYSTALLISATION PROCESS FOR PRODUCING HIGHLY CONCENTRATED HYDROGEN PEROXIDE

    公开(公告)号:CA2436892A1

    公开(公告)日:2002-06-06

    申请号:CA2436892

    申请日:2001-10-24

    Applicant: DEGUSSA

    Abstract: The invention relates to a process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallisation and after- treatment of the H2O2 crystals. According to the invention, the after- treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. The invention also provides hydrogen peroxide having a concentration of from 99.9 to 100 wt.% a nd a content of TOC, nitrate, phosphate, nickel and tin of in each case less th an 4 mg/l.

    6.
    发明专利
    未知

    公开(公告)号:BR0115811A

    公开(公告)日:2003-09-16

    申请号:BR0115811

    申请日:2001-10-24

    Applicant: DEGUSSA

    Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

    10.
    发明专利
    未知

    公开(公告)号:NO20032469D0

    公开(公告)日:2003-05-30

    申请号:NO20032469

    申请日:2003-05-30

    Applicant: DEGUSSA

    Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

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