Patent ID: 6911185
Filing Date: 2005-06-28
Classification: B01J,C07C

Abstract:
1. A fluidized-bed reactor for conducting the exothermic reaction of oxychlorination of ethylene, oxygen and HCl, said reactor containing a fluidized bed and having a reactor wall with a heat exchange apparatus, said heat exchange apparatus comprising: a heat exchanger including a plurality of tube packets positioned in the fluidized bed for releasing heat evolved during the exothermic reaction to a heat-transfer medium comprising water within the tube packets; a ring pipe distributor coupled to the heat exchanger and mounted to the reactor wall, wherein the ring pipe distributor is essentially circular in cross section and mounted both internal to and external to the reactor wall, with essentially one-half of the cross section assigned to the interior of the reactor wall and essentially one-half of the cross-section assigned to the exterior of the reactor wall; and a ring pipe collector coupled to the heat exchanger and mounted to the reactor wall, wherein the ring pipe collector is essentially circular in cross section and mounted both internal to and external to the reactor wall, with essentially one-half of the cross section assigned to the interior of the reactor wall and essentially one-half of the cross-section assigned to the exterior of the reactor wall; wherein the water is distributed to the plurality of tube packets via the ring pipe distributor, and wherein the steam generated within the plurality of tube packets is removed from the tube packets via the ring pipe collector; and wherein the ring pipe distributor and the ring pipe collector each include throttle holes located in a position selected from the group consisting of: the coupling between the ring pipe distributor or collector and the heat exchanger; the reactor wall between the two-halves of the ring pipe distributor or collector; and both the coupling between the ring pipe distributor or collector and the heat exchanger, and the reactor wall between the two-halves of the ring pipe distributor or collector.