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US 9,371,613 B1Granted
On-site emulsification of defoamer for brownstock washing of pulp
AssigneeSolenis Technologies, L.P.
InventorsLloyd A Lobo, Todd S Bolton, Michael Mitchell, Kraig R Kent
Life of this patent
Estimating the term…
Abstract
The present method is directed to an on-site process for conveying an emulsion of one or more substantially water-free fluids or compositions to a brownstock washing process. This enables real-time adjustment of wash aids and other process aids thus improving the overall operation of brownstock washing.
Claims19
Method of washing a cellulosic furnish comprising;
- mixing one or more substantially water-free fluid(s) or composition(s) with water;
- and
- shearing the one or more substantially water-free fluid(s) or composition(s) and water with a shearing means having a shearing rate of at least 5000 s−1 thereby producing an emulsion;
- and
- conveying the emulsion into a brownstock washing operation;
- wherein the one or more substantially water-free fluid(s) or composition(s) has a Brookfield viscosity of less than about 70,000 centipoise (cps) when measured at 25° C. with a #6 spindle;
- and wherein the emulsion is conveyed into a brownstock washing vessel within 8 hours of preparing the emulsion.
4 more elements
Dependencies are inferred from the claim text.