Method for the continuous cooking of wood raw material for cellulose pulp
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United States of America Patent
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Oct 9, 2007
Grant Date -
Apr 6, 2006
app pub date -
May 15, 2003
filing date -
May 21, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The invention concerns a simplified method for the continuous cooking of wood raw material in the form of sawdust for the production of cellulose pulp, The method does not require any thickening stages and can be carried out with a minimum of process equipment. The complete process can be established with a steaming vessel, a cooking vessel and a subsequent pressure diffuser while the sawdust is mixed with the cooking fluid to form a slurry. The slurry has a consistency that throughout the process does not exceed 20%. The maximum consistency is preferably held at a maximum consistency of about 15-17%.
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