SE307727BSE4782/65ASE478265ASE307727BSE 307727 BSE307727 BSE 307727BSE 4782/65 ASE4782/65 ASE 4782/65ASE 478265 ASE478265 ASE 478265ASE 307727 BSE307727 BSE 307727B
Authority
SE
Sweden
Application number
SE4782/65A
Inventor
G Malm
Original Assignee
Svenska Cellulosa Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Svenska Cellulosa AbfiledCriticalSvenska Cellulosa Ab
Priority to SE4782/65ApriorityCriticalpatent/SE307727B/xx
Priority to FI660931Aprioritypatent/FI46757C/fi
Publication of SE307727BpublicationCriticalpatent/SE307727B/xx
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
D21C9/10—Bleaching ; Apparatus therefor
D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
D—TEXTILES; PAPER
D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
D21C9/10—Bleaching ; Apparatus therefor
D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process