DISTILLATION INSTALLATION COMPRISING COLUMNS WITH CORRUGATED-CROSSED STRUCTURED PACKINGS AND METHOD OF INCREASING THE CAPACITY OF A DISTILLATION INSTALLATION

摘要

The invention relates to a distillation installation comprising a system of columns (1, 3) and means for conveying a flow (7, 9) that is to be separated into one column (1) in said system. According to the invention, at least one segment (A, D) of one column contains structured packings comprising packs having a non-modified interface if, in the operating segment, the rate ratio is below a rate ratio threshold, said rate ratio being the ratio between the real reflux rate and the minimum reflux rate of the segment, and/or the charge ratio is above a charge ratio threshold, said charge ratio being the ratio between a falling flow of liquid and the section of the segment. Moreover, at least one segment (C, G) of a column, which is designed to operate with a rate ratio above the rate ratio threshold and/or with a charge ratio below the charge ratio threshold, contains structured packings comprising packs having at least one modified interface.