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Machine translation
1. (WO1981003506) METHOD FOR PROCESSING THE USED SOLUTIONS OF DIGESTION OF LIGNOCELLULOSE MATERIALS DURING THE PRODUCTION OF PAPER PULP THROUGH THE SO-COLD"SULPHITE"OR"BISULPHITE"METHODS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003506    International Application No.:    PCT/CH1981/000059
Publication Date: 10.12.1981 International Filing Date: 25.05.1981
IPC:
D21C 11/00 (2006.01)
Applicants:
Inventors:
Priority Data:
4090/80 27.05.1980 CH
Title (EN) METHOD FOR PROCESSING THE USED SOLUTIONS OF DIGESTION OF LIGNOCELLULOSE MATERIALS DURING THE PRODUCTION OF PAPER PULP THROUGH THE SO-COLD"SULPHITE"OR"BISULPHITE"METHODS
(FR) PROCEDE POUR TRAITER LES SOLUTIONS USEES DE DIGESTION DES MATIERES LIGNO-CELLULOSIQUES LORS DE LA FABRICATION DE LA PATE A PAPIER PAR LES METHODES DITES "AU SULFITE" OU "AU BISULFITE"
Abstract: front page image
(EN)Methods for separating into an aqueous phase and an organic phase which are not miscible the residual sulphitic or bisulphitic liquor produced by the digestion of ligno-cellulose materials after separation of the cellulose in the production of paper pulp following the so-sold "sulphite" or "bisulphite" methods. The residual liquor is heated within a reactor (6) in the presence of CO and/or pressurized H2, which transforms the organic materials dissolved within the liquor into a hydrocarbon oil which is then separated from the aqueous phase by decanting or centrifuging. This transformation may take place in one or more stages, the conditions of operation being different stage by stage.
(FR)Procede pour separer en une phase aqueuse et une phase organique non miscibles la liqueur residuelle sulfitique ou bisulfitique de digestion des matieres ligno-cellulosiques apres separation de la cellulose dans les methodes de fabrication de pate a papier dites "au sulfite" ou "au bisulfite". On chauffe la liqueur residuelle dans un reacteur (6) avec du CO et/ou du H2 sous pression ce qui transforme les matieres organiques dissoutes dans la liqueur en une huile hydrocarburee qu"on separe ensuite de la phase aqueuse par decantation ou centrifugation. Cette transformation peut avoir lieu en une ou plusieurs etapes, les conditions operatoires etant differentes d"etape en etape.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)