Bp Chemicals Limited

Ineos Europe Limited

Vince Reiling

Jean-Loic Selo

Alexandre Gallice

Cyclone design comprising an inlet device having an inlet height (Hi) and an inlet width (Wi), a gas outlet pipe having a pipe diameter (Di) and a pipe penetration (P), a barrel having an upper barrel diameter (Db) and a barrel length (Lb), said barrel comprising a cylindrical volume on top of a conical volume, a solids outlet pipe (O), an inlet gas velocity (Ug, i) and an inlet gas flow (Q), characterised in that the ratio of the inlet gas flow to the square of the upper barrel diameter (Q/Db) is higher than 0.5, preferably higher than 0.7, and lower than 1.5, preferably lower than 1.2 (m/s) and in that the barrel length to diameter ratio (Lb/Db) is higher than 3, preferably higher than 3.5, and lower than 6, preferably lower than 4.5.

Separation of gases and solids using a cyclone

The present invention relates to a process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor wherein fouling is prevented and/or flowability of polymer is improved thanks to the use of a process aid additive.

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Vauvenargues, France

Vince Reiling