INTERNAL HEAT EXCHANGE-TYPE DISTILLATION COLUMN

摘要

An internal heat exchange-type distillation column comprising a stripping section and a rectifying section that are integrated into one piece is provided. The heat transfer means is provided on a face of the rectifying section that is in contact with the stripping section, and the heat transfer means is accommodated in the stripping section. The heat transfer means is supplied with steam directly from the rectifying section so that heat is transmitted from the heat transfer means to the stripping section, and liquid that has been condensed as a result of heat transfer is returned to the rectifying section. Having such a configuration, heat of the rectifying section is efficiently used in the stripping section. Further, at least one open/close section is provided in the internal heat exchange-type distillation column or the rectifying section and the stripping section is separably integrated into one piece, each contents in the stripping section and the rectifying section can be replaced or cleaned easily through the open/close section. <IMAGE>