Patent ID: 6312505
Filing Date: 2001-11-06
Classification: C10K

Abstract:
A method for removing particulate and aerosol contaminants from a gas stream originating from a negative or near atmospheric pressure gasifier consisting of the following steps:a. cooling the gas stream from a negative or near atmospheric pressure gasifier in a indirect gas cooler to approximately 600 degrees Fahrenheit or below,b. liquid scrubbing the gas stream by directly contacting the gas stream with countercurrent flow of liquid hydrocarbon to remove particulate matter from the gas stream, to remove some of the aerosol tars contained in the gas stream, to condense some water vapor, to agglomerate water and particulate matter, and to further cool the gas stream to approximately 100 degrees Fahrenheit, andc. mechanically scrubbing the gas stream by using a high speed fan to forcefully direct the gas stream against an inside surface of one or more vortex chambers to cause the remaining aerosol tars and agglomerated water and particulate matter to coalesce on the inside surface and thereby be removed from the gas stream.