Patent ID: 6290920
Filing Date: 2001-09-18
Classification: B01J

Abstract:
Mixing assembly for gaseous flows at different temperatures, for a heterogeneous exothermic synthesis reactor comprising a plurality of superimposed catalytic beds (5a-5d) and in which at least one of the beds (5a) is provided with a gas permeable wall (6) for outlet of a hot gas flow (A), said assembly including:a baffle (10) extending below and parallel to said gas permeable wall (6) with which it defines an air space (11) for collection of the hot gas flow (A);an annular opening (12) for outlet of said hot gas flow (A) from said air space (11) defined between said baffle (10) and a side wall (2) supporting said at least one bed (5a) associated with the reactor;a perforated distributor (13) of a cooling gas flow (B) supported below said baffle (10) at a predetermined distance from said annular opening (12),characterized in that said air space (11) for collection of the hot gas flow (A) has a constant thickness in correspondence of said annular opening (12) and in that the ratio of the width (b) of said annular opening and the thickness of said air space is between 0.2 and 1.