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US 2011/0031102 A1Published application
Purification of hydroformylated and hydrogenated fatty alkyl ester compositions
AssigneeDow Global Technologies LLC
InventorsGeorge J. Frycek, Shawn D. Feist, Timothy C. Frank, Zenon Lysenko, Joe D. Phillips, Bruce W. Pynnonen
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Abstract
Effect separation of a composition of matter that includes at least two seed or plant oil derivatives into at least one desired product stream using at least two separation operations, which are independently selected from among several potential separation operations, in conjunction with at least one recycle stream from a separation operation.
Claims20
A method of separating at least one component from a composition that comprises at least two seed oil derivatives, the method comprising steps:
- a. subjecting the composition to a first separation operation, the first operation comprising a short contact time or low residence time evaporation, a low pressure (high vacuum) operation, a stripping operation, or a polarity driven separation operation, the first separation selectively partitioning the composition into a first portion and a first remainder;
- b. subjecting the first remainder to at least one additional separation operation, the additional operation comprising a short contact time or low residence time evaporation, a low pressure operation, a stripping operation, or a polarity driven separation operation, each additional separation being the same as, or different from, each other and the first separation, the additional separation operation selectively partitioning the first remainder into at least one additional portion and at least one additional remainder, the additional portion being the same as, or different from, the first portion;
- and
- c. recycling at least a portion of the additional remainder to the first separation as a co-feed with the composition.
1 more element
Dependencies are inferred from the claim text.