METHOD FOR BLEACHING CHEMICAL PULP

• Main Authors: KOBARI KAZUTOKI, ICHIHASHI YOSHINOBU, HARA HIROICHI, TAMADA KENJI
• Format: Patent
• Language: English
• Published: 08.02.1994
• Edition: 5
• Subjects: APPARATUS THEREFOR; PAPER-MAKING; PRODUCTION OF CELLULOSE; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; TEXTILES

PURPOSE:To obtain bleached pulp without mutagenicity by applying a nonchlorine-based bleaching chemical after an alkali extraction stage in multistage bleaching of chemical pulp. CONSTITUTION:In multistage bleaching of chemical pulp, a nonchlorine-based bleaching chemical (e.g. hydrogen peroxide, so...