Patent ID: 8926907
Filing Date: 2015-01-06
Classification: B01J,B65G,C10G

Abstract:
1. A system for injecting catalyst and/or additives into a fluidized catalytic cracking unit, comprising: a dust collector adapted to be in fluid communication with at least one storage bin holding one of the catalyst and/or additives; a vacuum producer in fluid communication with the dust collector so that the vacuum producer generates a vacuum within the dust collector that draws the one of the catalyst and/or additives into the dust collector; a transfer pot which is selectively in fluid communication with the dust collector for receiving the one of the catalyst and/or additives from the dust collector, the transfer pot adapted to be in fluid communication with the fluidized catalytic cracking unit and a source of pressurized air so that the one of the catalyst and/or additives can be transferred to the fluidized catalytic cracking unit in response to a pressure differential between the transfer pot and the fluidized catalytic cracking unit; at least one flexible section positioned between and in fluid communication with said dust collector and said transfer pot; a first valve for isolating said dust collector from said transfer pot, disposed between said dust collector and said transfer pot, such that when said valve is opened, said dust collector and said transfer pot are in fluid communication with each other and such that when said valve is closed, said dust collector and said transfer pot are not in fluid communication with each other; and a controller electrically coupled to an actuator of said first valve and to an actuator of said vacuum producer for controlling operation of said first valve and said actuator of said vacuum producer, wherein said controller is programmed such that said first valve is open while said vacuum producer generates said vacuum within the dust collector.