SE311110BSE1531767ASE1531767ASE311110BSE 311110 BSE311110 BSE 311110BSE 1531767 ASE1531767 ASE 1531767ASE 1531767 ASE1531767 ASE 1531767ASE 311110 BSE311110 BSE 311110B
Authority
SE
Sweden
Application number
SE1531767A
Inventor
I Croon
S Dillen
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe AbfiledCriticalMo Och Domsjoe Ab
Priority to SE1531767ApriorityCriticalpatent/SE311110B/xx
Priority to FI215368Aprioritypatent/FI44748B/fi
Priority to SU681282321Aprioritypatent/SU701546A3/ru
Priority to FR1597604Dprioritypatent/FR1597604A/fr
Publication of SE311110BpublicationCriticalpatent/SE311110B/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
D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively