PROCESS FOR RECYCLING SOLVENT USED IN AN ETHYLENE-BASED POLYMERIZATION REACTION AND SYSTEM THEREFOR
摘要
A process for recycling solvent used in an ethylene-based polymerization comprising: passing a solvent stream which has been used in a first ethylene-based solvent polymerization reactor through an online purification bed to produce a recycle solvent stream, wherein the solvent stream prior to being passed through the online purification bed comprises solvent, ethylene, hydrogen, polymerization by-products and optionally comonomer; and passing the recycle solvent stream from the online purification bed to a second ethylene-based solvent polymerization reactor; wherein the second ethylene-based solvent polymerization reactor exhibits a catalyst efficiency dip of less than or equal to 20% for no longer than a forty-eight hour period following a swap of the online purification bed to a regenerated purification bed which contains an adsorbent having low reactivity to alkenes is provided.
申请公布号
WO2012154242(A1)
申请公布日期
2012.11.15
申请号
WO2012US25327
申请日期
2012.02.16
申请人
DOW GLOBAL TECHNOLOGIES LLC;HYDE, STACEY;CASTELLUCCIO, ANTHONY, J.;GEMOETS, FREDERIK, E.
发明人
HYDE, STACEY;CASTELLUCCIO, ANTHONY, J.;GEMOETS, FREDERIK, E.