Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Removing and recycling removed material from an ongoing...
Patent
1992-02-07
1995-01-17
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Removing and recycling removed material from an ongoing...
526 68, 526 88, 526901, 422144, 422145, C08F 234
Patent
active
053826388
ABSTRACT:
A process for polymerizing olefins in a gas-phase fluidized-bed reactor comprising a reactor body (1), optionally surmounted by a disengagement chamber (2), in which fine particles entrained by the gas mixture leaving the top of the reactor are separated from the gas and recycled to the upper portion of the reactor body. Polymer is withdrawn from the reactor body (1) via at least two polymer outlets, at least one of which (15) is in the lower portion of the reactor body (1) and at least one of which (16) is in the upper portion of the reactor body at a position below the top of the fluidized bed. The invention includes apparatus for polymerizing olefins and the use of the apparatus.
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"The Fundamentals of the Fluidisation Practice", N. I. Galperin, et al., Khimiya Publishers, Moscow, 1967, p. 457. (English Translation).
"Adjustment of Pneumatic Devices at Grain-Processing Enterprises", A. I. Krivoshein, Kolos Publishers, 1972 pp. 5-14 (English Translation).
Bontemps Xavier
Havas Laszlo
Martens Andre
Morterol Frederic R. M. M.
BP Chemicals Limited
Schofer Joseph L.
Weber Tom
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