Modifying kraft pulping to produce a softwood pulp requiring less energy in tissue paper production
نویسنده
چکیده
......................................................................................................... ii SAMMANFATTNING .......................................................................................... iii ACKNOWLEDGEMENT ...................................................................................... v LIST OF PAPERS ............................................................................................... ix CONFERENCES .................................................................................................. x ABBREVIATION AND ACRONYMS .................................................................. xi DEFINITIONS ..................................................................................................... xii
منابع مشابه
Dissolving Pulp (alpha-cellulose) from Corn Stalk by Kraft Process
Corn stalk can be used as an alternative non-wood raw material to produce cellulosic dissolving grade pulp. In this work, the potential of corn stalk in the production of dissolving pulp (alpha-cellulose) was investigated. It was collect ed from a corn stalk farm of Kermanshah, Iran. The sequences of experimental work were: water and acid prehydrolysis at 160˚C for 30min, followed by Kraft pulp...
متن کاملPresence of Hardwood Chips and Its Impact on Pulp Strength Properties in the Production of Bleached Softwood Kraft Pulp
The effect of hardwood admixture (15-25% birch or aspen) in kraft cooking on the strength properties of the fully bleached pulp was investigated. Results obtained from both laband mill-processed ECF bleached pulps showed that adding 15-25% birch or aspen to the production of fully bleached softwood kraft pulp had a minor effect on the strength properties. No significant effect was observed for ...
متن کاملKRAFT PULPING OF Juniperus communis RESULTS IN PAPER WITH UNUSUALLY HIGH ELASTICITY
Juniper (Juniperus communis) is a slowly growing softwood species that has unusually high elasticity. To demonstrate the utilization of the material properties of juniper, conventional kraft pulping was used to prepare juniper pulp, whose handsheet and fiber properties were subsequently analyzed. A large number of uncooked fiber bundles remained after pulping, the screened yield was low, and ka...
متن کاملA larch biorefinery producing pulp and lactic acid
Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Hanna Hörhammer Name of the doctoral dissertation A larch biorefinery producing pulp and lactic acid Publisher School of Chemical Technology Unit Department of Forest Products Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 143/2014 Field of research Biorefineries Manuscript submitted 6 June 2014 D...
متن کاملMultifunctional Alkaline Pulping, Delignification and Hemicellulose Extraction
In this study, multifunctional alkaline pulping was suggested to produce different pulp grades at one mill site, ranging from high-yield paper pulp to high-purity dissolving pulp. In all process modifications, sulfur was successfully replaced by anthraquinone. Autohydrolysis and alkaline pre-extraction were applied to Eucalyptus globulus wood chips, followed by kraft and soda-AQ pulping. Alkali...
متن کامل