Patent ID: 9134064
Filing Date: 2015-09-15
Classification: B01J,C10G,F25D

Abstract:
1. A process vessel system having improved cooldown capability, comprising: a process vessel sized and arranged for containing a catalyst inventory therein and adapted for access to an interior of said process vessel for replacement of said catalyst; a compressor fluidly connected to said process vessel by a piping system creating a recirculating fluid flowpath through said compressor and said process vessel; and a recirculating gas cooling system comprising a heat exchanger system operatively connected to said piping system, wherein said recirculating gas cooling system is positioned downstream of said compressor and upstream of said process vessel, and is capable of lowering the temperature of said fluids to a temperature within the range of about 30 to 40° F. below said desired final temperature, and wherein said desired final temperature is within the range of about 80° F. to about 100° F.