SE353928BSE00493/68ASE49368ASE353928BSE 353928 BSE353928 BSE 353928BSE 00493/68 ASE00493/68 ASE 00493/68ASE 49368 ASE49368 ASE 49368ASE 353928 BSE353928 BSE 353928B
Authority
SE
Sweden
Application number
SE00493/68A
Inventor
W Rapson
Original Assignee
Electric Reduction Co
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
Priority claimed from GB2240/67Aexternal-prioritypatent/GB1217833A/en
Application filed by Electric Reduction CofiledCriticalElectric Reduction Co
Publication of SE353928BpublicationCriticalpatent/SE353928B/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
D21C9/1026—Other features in bleaching processes
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
D21C11/00—Regeneration of pulp liquors or effluent waste waters
D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
D21C11/0028—Effluents derived from the washing or bleaching plants