SE306874BSE5153/65ASE515365ASE306874BSE 306874 BSE306874 BSE 306874BSE 5153/65 ASE5153/65 ASE 5153/65ASE 515365 ASE515365 ASE 515365ASE 306874 BSE306874 BSE 306874B
Authority
SE
Sweden
Application number
SE5153/65A
Inventor
H Asplund
R Reinhall
K Cederquist
Original Assignee
Defibrator 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 Defibrator AbfiledCriticalDefibrator Ab
Priority to SE5153/65ApriorityCriticalpatent/SE306874B/xx
Priority to FI661025Aprioritypatent/FI46754C/fi
Publication of SE306874BpublicationCriticalpatent/SE306874B/xx
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
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