초록 ▼

The liquid content of granular product removed from a fluidized bed polymerization reactor operating in the condensing mode is reduced or minimized by removing the product from a level in the fluidized bed which is about 0.21 to about 0.59 of its height while venting the product discharge tank to a

The liquid content of granular product removed from a fluidized bed polymerization reactor operating in the condensing mode is reduced or minimized by removing the product from a level in the fluidized bed which is about 0.21 to about 0.59 of its height while venting the product discharge tank to a point higher in the fluidized bed.

대표청구항 ▼

1. A method for operating a fluidized bed polymerization reactor to remove a granular product therefrom, the reactor having a fluidized bed height H above a distributor plate and being operated in a condensing mode, comprising:(a) operating the reactor in condensing mode;, (b) moving the granular pr

1. A method for operating a fluidized bed polymerization reactor to remove a granular product therefrom, the reactor having a fluidized bed height H above a distributor plate and being operated in a condensing mode, comprising:(a) operating the reactor in condensing mode;, (b) moving the granular product from the reactor, by opening an upper discharge valve for an upper discharge port in the reactor at a height from 0.21H to 0.6H, to a product discharge tank after opening the upper discharge valve; (c) venting the product discharge tank from a vent to the reactor, the product discharge tank being vented to the reactor at least 0.1H higher than the upper discharge port; and (d) removing larger particles or agglomerates from the distribution plate by opening a lower discharge valve for a lower discharge port at a level lower than the upper discharge port and no higher than 0.2H.