Patent ID: 8480860
Filing Date: 2013-07-09
Classification: B01D,F25J

Abstract:
1. A divided exchange column, comprising: a cylindrical shell column having a first longitudinal axis and a cylindrical wall spaced apart from and surrounding the first longitudinal axis thereby defining a first interior space between the cylindrical wall and the first longitudinal axis, wherein the cylindrical wall comprises an inner surface and an outer surface; a first preformed divided wall column having a second longitudinal axis substantially parallel to the first longitudinal axis, a first wall, and a second wall, wherein the first wall of the first preformed divided wall column is coupled to the second wall of the first preformed divided wall column, and wherein the first wall of the first preformed divided wall column is substantially flat and the second wall of the first preformed divided wall column is substantially semi-cylindrical; a second preformed divided wall column having a third longitudinal axis substantially parallel to the first and the second longitudinal axes, a first wall, and a second wall, wherein the first wall of the second preformed divided wall column is coupled to the second wall of the second preformed divided wall column, and wherein the first wall of the second preformed divided wall column is substantially flat and the second wall of the second preformed divided wall column is substantially semi-cylindrical; and wherein the first preformed divided wall column and the second preformed divided wall column are positioned in the first interior space of the cylindrical shell column defining two longitudinally extending part-cylindrical internal columns, such that the first wall of the first preformed divided wall column is adjacent to the first wall of the second preformed divided wall column and the second wall of the first preformed divided wall column and the second wall of the second preformed divided wall column are adjacent to the inner surface of the cylindrical wall.