APPARATUS AND PROCESS FOR MINIMIZING CATALYST RESIDENCE TIME IN A REACTOR VESSEL

摘要

We have discovered a way to minimize the time that catalyst and gaseous products are in contact after exiting the discharge opening (22) of a reactor conduit (10). The reactor conduit discharges into a disengaging chamber (24) that is directly connected to a separator (32). A dipleg (34) of the separator is directly connected to the disengaging chamber or to an intermediate chamber (64) which is in direct communication with the disengaging chamber. Accordingly, catalyst never gets a chance to become entrained in the large open volume of the reactor vessel. Consequently, catalyst which makes it out of the disengaging chamber is quickly returned back to the disengaging chamber, thereby minimizing the time that catalyst and product gases are in contact after being discharged from the reactor conduit.