公开(公告)号：DE3633672C1

公开(公告)日：1988-03-03

申请号：DE3633672

申请日：1986-10-03

Applicant: DEGUSSA

Inventor： KUNKEL WOLFGANG DR ,  GOOR GUSTAAF DR ,  KEMNADE JOERG DR

IPC: C01B15/013 ,  C01B15/023

Abstract: An aqueous hydrogen peroxide extract which contains small amounts of dispersed working solution and a working solution which contains small amounts of dispersed aqueous hydrogen peroxide are collected in the extraction stage of the anthraquinone method for preparing hydrogen peroxide. In order to purify these solutions, the working solution is compounded with aqueous hydrogen peroxide or preferably with water and the hydrogen peroxide extract is compounded with an organic dissolving mixture, preferably a quinone dissolver, and the respective dispersed phase is separated out with the aid of coalescers in a separator unit. It is especially preferable to add 1-3% by volume water or 1-3% quinone dissolver before the coalescer stages and to use coalescers with a drop-enlarging design and filter layers consisting of thermally desized glass filament yarn. The after-purification in accordance with the method results in a hydrogen peroxide which is improved as regards carbon content and color index as well as in an increase in yield of hydrogen peroxide and in a working solution with constant rel. moisture.

公开(公告)号：DE3773457D1

公开(公告)日：1991-11-07

申请号：DE3773457

申请日：1987-08-08

Applicant: DEGUSSA

Inventor： KUNKEL WOLFGANG DR ,  GOOR GUSTAAF DR ,  KEMNADE JOERG DR

IPC: C01B15/013 ,  C01B15/023

Abstract: Isolation of aq. hydrogen peroxide from the anthraquinone process (in which anthraquinone is reduced catalytically with hydrogen, and the resulting hydroquinone deriv. is treated with oxygen) comprises extracting the crude aq. liquors with a water-immiscible solvent which dissolves the anthraquinone liberated, pref. aromatic hydrocarbons (b. pt. 180-220 deg. C; 0.5-5.0 vol%); and separation of the aq. H2O2 from the organic phase.

公开(公告)号：AT67986T

公开(公告)日：1991-10-15

申请号：AT87111501

申请日：1987-08-08

Applicant: DEGUSSA

Inventor： KUNKEL WOLFGANG DR ,  GOOR GUSTAAF DR ,  KEMNADE JOERG DR

IPC: C01B15/013 ,  C01B15/023

公开(公告)号：DE3633672C2

公开(公告)日：1993-09-30

申请号：DE3633672

申请日：1986-10-03

Applicant: DEGUSSA

Inventor： KUNKEL WOLFGANG DR ,  GOOR GUSTAAF DR ,  KEMNADE JOERG DR

IPC: C01B15/013 ,  C01B15/023

Abstract: An aqueous hydrogen peroxide extract which contains small amounts of dispersed working solution and a working solution which contains small amounts of dispersed aqueous hydrogen peroxide are collected in the extraction stage of the anthraquinone method for preparing hydrogen peroxide. In order to purify these solutions, the working solution is compounded with aqueous hydrogen peroxide or preferably with water and the hydrogen peroxide extract is compounded with an organic dissolving mixture, preferably a quinone dissolver, and the respective dispersed phase is separated out with the aid of coalescers in a separator unit. It is especially preferable to add 1-3% by volume water or 1-3% quinone dissolver before the coalescer stages and to use coalescers with a drop-enlarging design and filter layers consisting of thermally desized glass filament yarn. The after-purification in accordance with the method results in a hydrogen peroxide which is improved as regards carbon content and color index as well as in an increase in yield of hydrogen peroxide and in a working solution with constant rel. moisture.

公开(公告)号：GR3003467T3

公开(公告)日：1993-02-17

申请号：GR910402198

申请日：1991-12-30

Applicant: DEGUSSA

Inventor： KUNKEL WOLFGANG DR ,  GOOR GUSTAAF DR ,  KEMNADE JOERG DR

IPC: C01B15/013 ,  C01B15/023

Abstract: An aqueous hydrogen peroxide extract which contains small amounts of dispersed working solution and a working solution which contains small amounts of dispersed aqueous hydrogen peroxide are collected in the extraction stage of the anthraquinone method for preparing hydrogen peroxide. In order to purify these solutions, the working solution is compounded with aqueous hydrogen peroxide or preferably with water and the hydrogen peroxide extract is compounded with an organic dissolving mixture, preferably a quinone dissolver, and the respective dispersed phase is separated out with the aid of coalescers in a separator unit. It is especially preferable to add 1-3% by volume water or 1-3% quinone dissolver before the coalescer stages and to use coalescers with a drop-enlarging design and filter layers consisting of thermally desized glass filament yarn. The after-purification in accordance with the method results in a hydrogen peroxide which is improved as regards carbon content and color index as well as in an increase in yield of hydrogen peroxide and in a working solution with constant rel. moisture.