SULFITE DIGESTER RATE OF DELIGNIFICATION SYSTEM

The degree of cooking in a sulphite digester for delignification reactions, is determined by continuously calculating the digester reaction rate as a function of sensed idgester temp. sensed digester pressure and several constants which include an energy-of-activity constant and the gas constant of...

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Bibliographic Details
Main Authors KEYES MARION A, JOHNSON RALPH K, KAYA AZMI
Format Patent
LanguageEnglish
Korean
Published 04.05.1988
Edition4
Subjects
APPARATUS THEREFOR
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PAPER-MAKING
PHYSICS
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TESTING
TEXTILES
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Summary:The degree of cooking in a sulphite digester for delignification reactions, is determined by continuously calculating the digester reaction rate as a function of sensed idgester temp. sensed digester pressure and several constants which include an energy-of-activity constant and the gas constant of the digester reaction, so that reaction rate value is obtd. over a time period. A value corresponding to partial pressure of SO2 is obtd. as a function of temp, and pressure, and is multiplied by the reaction rate value to give a delignification rate value which is integrated over time to obtain a kappa number corresponding to the degree of cooking in the digester.
Bibliography:Application Number: KR19830005175