Reverse absorption heat pump augmented distillation process

Abstract From the Canadian patent

A fractional distillation process is provided in which at least part of the heat required at the reboiler is provided by indirect heat exchange with an absorbent solution which is absorbing a gaseous working fluid at a first pressure; and in which the absorbent solution is regenerated for recycle to additional absorption by lowering its pressure to a second pressure no more than 70% of the first pressure supply-, ing heat to it to resorb gaseous working fluid at the second pressure, and restoring its pressure to approximately the first pressure; and in which the gaseous working fluid at first pressure is provided by condensing the gaseous working fluid at second pressure, increasing its …