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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
D21C11/10—Concentrating spent liquor by evaporation
D21C11/103—Evaporation by direct contact with gases, e.g. hot flue gases
FR459069D1912-08-241912-08-24Procédé d'épuration et de concentration des eaux résiduaires des papeteries
ExpiredFR459069A
(fr)