Patent ID: 6128922
Filing Date: 2000-10-10
Classification: B01J,F25J,Y10S

Abstract:
A distillation method comprising:introducing a mixture into a packed column, the gaseous mixture comprising higher and lower volatility components;operating the packed column such that the higher and lower volatility components have a relative volatility within said packed column in a range of between about 1.05 and about 1.8; anddistilling said mixture within said packed column by forming ascending and descending gaseous and liquid phases of said mixture and contacting said gaseous and liquid phases within structured packing arranged within packed beds such that a lowermost of said packed beds has a height within a range of between about 50% and about 80% of a next higher of said packed beds and the total height of said packing within said distillation column is equal to at least about six meters.