A Fractionation System Using Divided Wall Distillation Column with Prefractionator and Postfractionator

摘要

The invention pylons, pretreatment towers and pylons or pylons and the post-processing tower distillation unit is configured, respectively, the 1 in the main tower or two dividing the space formed by installing the walls the function of the pre-treatment tower or pylon or post-processing tower used as a space to, and the distillation curve of the space to the function of the post and the main tower process tower equilibrium distillation curve and that one ever fractional distillation is possible characteristics as designed to significantly reduce the use of energy so as to be similar to the dividing wall It relates to the fractional distillation column in the apparatus using the composite column system. ; Therefore, the distillation apparatus of the invention may configure the new process to the design method shown in the present invention, in particular, the distillation apparatus of the invention of the third group to the distillation tower of Unlike conventional heat complex distillation system 1 group or 2 group because the same function as the installation of the distillation column energy-saving efficiency is an advantage in that it can be reduced as well, because as well as to reduce the use of energy and reduce the equipment cost for the number of distillation columns. ; The dividing wall, complex distillation columns, pre-towers, pylons, post-processing tower, three-component distillation