The present invention relates to a process for controlling a continuous fluidised bed reactor (co-)polymerisation process which comprises (1) withdrawing from the reactor a hot recycle stream comprising a principal monomer and at least one other unreacted reactant, (2) cooling part or all of said recycle stream withdrawn from said reactor, and (3) recycling part or all of said cooled recycle stream comprising the principal monomer and the unreacted reactant(s) through the polymerisation zone in said reactor in the presence of a polymerisation catalyst under reactive conditions, characterised in that the said controlling process consists in maintaining at least one of the reactant gradients (Gri) within a range of values outside which sheeting or unstable operations would otherwise occur.
申请公布号
WO0032651(A1)
申请公布日期
2000.06.08
申请号
WO1999GB03964
申请日期
1999.11.26
申请人
BP CHEMICALS LIMITED;BP CHEMICALS S.N.C.;CASSISA, ERIC;CHINH, JEAN-CLAUDE;LEE, STEPHEN, KEVIN
发明人
CASSISA, ERIC;CHINH, JEAN-CLAUDE;LEE, STEPHEN, KEVIN