Method and apparatus for discharging a polymer from a gas-phase reactor
AssigneeBasell Polyolefine GmbH
InventorsManfred Hecker, Paulus-Petrus Maria De Lange, Klaus Berhalter, Thomas Andreas Hora, Axel Hamann
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Abstract
Process and apparatus for discharging polyolefin particles from a gas-phase polymerization reactor of a pressure from 1.0 MPa to 10 MPa to a discharge vessel of a pressure from 0.1 MPa to 1.0 MPa wherein the discharging is carried out discontinuously through at least two discharge lines in which the polyolefin particles are transported horizontally or upwards.
Claims13
A process for discharging polyolefin particles from a gas-phase polymerization reactor of a pressure from 1.0 MPa to 10 MPa to a discharge vessel of a pressure from 0.001 MPa to 1.0 MPa wherein the discharging is carried out discontinuously through at least two discharge lines in which the polyolefin particles are transported horizontally or upwards
- wherein the discharge lines have a curvature according to a ratio R/D of at least 20, with R being the radius of the curvature and D being the inner diameter of the discharge line.
An apparatus for polymerizing olefins in the gas-phase comprising a polymerization reactor, a discharge vessel and at least two pipes connecting the polymerization reactor and the discharge vessel for discharging polyolefin particles, wherein the discharge lines are constructed in a way that the polyolefin particles conveyed from the polymerization reactor to the discharge vessel are transported horizontally or upwards,
- wherein the discharge lines have a curvature according to a ratio R/D of at least 20, with R being the radius of the curvature and D being the inner diameter of the discharge line.
Dependencies are inferred from the claim text.