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Methanol‐based pulping of eucalyptus globulus
Author(s) -
Gilarranz M. A.,
Oliet M.,
Rodriguez F.,
Tijero J.
Publication year - 1999
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450770312
Subject(s) - eucalyptus globulus , kappa number , methanol , pulp (tooth) , pulp and paper industry , eucalyptus , yield (engineering) , viscosity , chemistry , mathematics , materials science , composite material , botany , organic chemistry , kraft process , engineering , biology , kraft paper , medicine , pathology
The autocatalyzed pulping of Eucalyptus globulus wood with methanol‐water mixtures was studied. A surface response design was employed to develop mathematical models describing the pulp properties as a function of cooking time, cooking temperature and methanol concentration. The ranges studied for these variables were 40–120 min, 170‐200°C and 30‐70% (w/w), respectively. The pulp properties modeled were kappa number, total yield, screenings content, screened yield and viscosity. Under the optimum cooking conditions pulps with low kappa number and acceptable viscosity can be obtained with a high yield.