VAPOR-PHASE POLYMERIZATION OF OLEFIN AND EQUIPMENT THEREFOR

PURPOSE:Polymerization is carried out in a specific polymerizer, as the catalyst which is previously treated by polymerization and the monomer are fluidized under continuous feed of a liquid organic rapid coolant and the inner gas is always taken out and circulated except the coolant, thus effecting...

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Bibliographische Detailangaben
Hauptverfasser:	YANOSHITA MINORU, HATSUTORI NOBUTAKA, FUNAHASHI WATARU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:Polymerization is carried out in a specific polymerizer, as the catalyst which is previously treated by polymerization and the monomer are fluidized under continuous feed of a liquid organic rapid coolant and the inner gas is always taken out and circulated except the coolant, thus effecting stable polymerization for a long period of time. CONSTITUTION:The catalyst of 1.2-2.5g/cm , which is obtained by prepolymerization treatmen, and an olefin gas are introduced respectively from inlets 4, 4' and inlet 1 into the vertical polymerization tank 3 of truncated cone shape where the ratio of the height to the diameter is 1-5, the angle between the cone axis and the surface is 1-10 deg., the diameter expands upward, and the vertical stirrer 7 is provided inside and a distributer 12 is provided at the bottom for forming a fluidized bed. Then, polymerization is started at 30-130 deg.C and 0- 50kg/cm and a liquid organic rapid coolant is continuously fed from inlet 5 by such an amount as it compensates the polymerization heat. Further, the mixed gas containing unreacted gas and gasified rapid coolant is taken out, after the coolant is separated, circulated to the polymerizer.