"FROM SOLUTION" OLEFIN POLYMERIZATION Russian patent published in 2002 - IPC

FIELD: polymerization processes. SUBSTANCE: "from solution" polymerization system for polymerization of olefin monomer via solvent-involving monomer-catalyst interaction includes loop with discharge orifice to discharge polymer product, said loop comprising: recycle- provided reactor; admission opening to introduce catalyst and solvent; admission opening through which monomer and solvent are loaded and form common stream with catalyst; first heat-exchanger to admit stream of reaction materials and any polymer formed and to remove reaction heat; and a pump to pump stream of reaction materials and polymer product through loop and from the first heat-exchanger toward discharge orifice to discharge polymer product. In its another embodiment, the system includes at least one additional heat- exchanger in loop to admit stream of reaction materials and polymer product and to remove reaction heat from the loop; a pump to pump polymer product and the rest of reaction materials toward product discharge orifice, through which a part of polymer product and a part of the rest of reaction materials are discharged, whereas remaining part of the both is recycled into the loop. One of possible destination of the system is production of polyethylene. EFFECT: increased heat abstraction velocity. 60 cl, 9 dwg, 4 tbl, 14 ex