Patent ID: 6024842
Filing Date: 2000-02-15
Classification: B01D,B01J,F28D,F28F,Y10S

Abstract:
A distillation column for fractionating a liquid feed material in plug flow, said distillation column comprising a liquid feed input and distillate output, said column further comprising a core pipe, said core pipe acting as a mandrel for the application of at least first and second layers of vanes, said first layer of vanes being helically wound about said core pipe, the inner diameter of said first layer of vanes being substantially co-extensive with the outer diameter of said core pipe wherein each of said vanes of said first layer being of a substantially constant angle to said longitudinal axis and said second layer of vanes being helically wound about said first layer of vanes such that said second layer of vanes has an inner diameter substantially co-extensive with the outer diameter of said first layer of vanes and the vanes of said second layer being of a substantially constant angle to said core pipe, the angle of each layer of vanes being opposite to the angle of adjacent layer of vanes so that interstices are created between adjacent layers of vanes which are substantially constant along the length of said core pipe and wherein each layer of vanes is at an angle of approximately 45.degree. to said core pipe.