POLYOLEFIN PRODUCTION APPARATUS AND POLYOLEFIN PRODUCTION METHOD

Polyolefin powder is transferred from a gas-phase polymerization reactor to a solid-gas separator having a relatively low pressure, while an amount of monomer gas discharged from the gas-phase polymerization reactor is kept low.A polyolefin production apparatus includes a gas-phase polymerization re...

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Bibliographische Detailangaben
1. Verfasser:	ITOGUCHI, Satoshi
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:	Polyolefin powder is transferred from a gas-phase polymerization reactor to a solid-gas separator having a relatively low pressure, while an amount of monomer gas discharged from the gas-phase polymerization reactor is kept low.A polyolefin production apparatus includes a gas-phase polymerization reactor 10 that polymerizes an olefin monomer to produce polyolefin powder, a solid-gas separator 20, a circulation pipe LC having both ends connected to the solid-gas separator, and provided with a first compressor CP1, a hopper 30, a first powder-conveying pipe L1 connecting the gas-phase polymerization reactor and the hopper, and provided with a first valve V1 halfway, and a second powder-conveying pipe L2 connecting an outlet of the hopper and the circulation pipe, and provided with a second valve V2 halfway.