Process and system for increasing the solids content of microfibrillated cellulose
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United States of America
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Dec 17, 2024
Grant Date -
May 25, 2023
app pub date -
Dec 19, 2019
filing date -
Dec 19, 2019
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Abstract
The present invention relates to a process and a system for the at least partial removal or exchange of solvent from/in a suspension comprising microfibrillated cellulose (MFC), specifically the at least partial removal of solvent from a suspension comprising microfibrillated cellulose having a comparatively high solvent (water) content to a relatively lower solvent content. Accordingly, the solids content of the microfibrillated cellulose increases during the the step of at least partial removal of solvent from a suspension comprising process, in particular from a first solids content in the range of from 0.1% weight by weight (“w/w”) to 6% w/w, preferably 1% weight by weight (“w/w”) to 5% w/w, up to a second solids content of above 5% w/w, preferably to a solids content of from above 5% w/w-50% w/w, further preferably to a solids content of from above 5% w/w-25% w/w. In a separate aspect, a solvent exchange step after the at least partial removal of a first solvent is also part of the present invention.
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