Patent ID: 6378332
Filing Date: 2002-04-30
Classification: B01J,F25J,Y10S

Abstract:
A method for carrying out rectification comprising:(A) passing a feed mixture comprising a more volatile component and a less volatile component into a column containing a plurality of modules, each module comprising a plurality of vertically oriented corrugated structured packing sheets, each structured packing sheet having a plurality of high corrugations each high corrugation having a corrugation height equal to the crimp height of the packing sheet and having a plurality of low corrugations each low corrugation having a corrugation height less than the crimp height, said corrugated structured packing sheets stacked side by side with the direction of the corrugations reversed in neighboring sheets, said neighboring sheets contacting each other at their high corrugations and being spaced from each other at their low corrugations; (B) carrying out rectification within the column wherein vapor flows upward through the modules and liquid flows downward through the modules whereby the said more volatile component concentrates in the upflowing vapor and the said less volatile component concentrates in the downflowing liquid; and (C) withdrawing first fluid from the upper portion of the column, said first fluid having a concentration of more volatile component which exceeds that of the feed mixture, and withdrawing second fluid from the lower portion of the column, said second fluid having a concentration of less volatile component which exceeds that of the feed mixture.