| 20120004489 | POLYOLEFIN MANUFACTURING SYSTEM INCLUDING A MEMBRANE FRACTIONATION SYSTEM FOR DILUENT RECOVERY - A fractionation system for a polymerization reactor includes a membrane separation system designed to separate light components, such as unreacted monomer and inerts, from diluent. The membrane separation system may employ one or more membrane modules designed to separate hydrocarbons based on size, solubility, or combinations thereof. The fractionation system also may include a heavies fractionation column designed to separate heavy components, such as unreacted comonomer and oligomers, from the diluent. | 01-05-2012 |
