Method for producing alkali cellulose comprising removal of cellulose particles
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United States of America Patent
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Aug 25, 2015
Grant Date -
Aug 23, 2012
app pub date -
Feb 16, 2012
filing date -
Feb 21, 2011
priority date (Note) -
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Abstract
There is provided a method for producing alkali cellulose comprising efficiently removing cellulose particles which are introduced by a pulp and have accumulated in a circulating alkali metal hydroxide solution. More specifically, there is provided a method for producing alkali cellulose, comprising at least the steps of bringing a pulp into contact with an alkali metal hydroxide solution to obtain a contact product, draining the contact product by a drainer, reusing an alkali metal hydroxide solution recovered in the step of draining for contact with a pulp, and adjusting an amount of cellulose particles in the recovered alkali metal hydroxide solution to 0.5% by weight or less prior to reusing for contact with the pulp.
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