DRAIN RECOVERY AND RECYCLE SYSTEM

PROBLEM TO BE SOLVED: To provide a drain recovery and recycle system capable of supplying vapor complying with use conditions of a vapor using system without giving rise to running cost.SOLUTION: A drain recovery and recycle system includes a flush tank 5 separating drain resulting from loss of condensation latent heat of high pressure vapor in high pressure vapor using systems 1a, 1b into flush vapor and hot water, and an ejector 8 introducing a first flush vapor separated in the flush tank 5 by means of the ejector effect by the high pressure vapor to mix the first flush vapor with the high pressure vapor so as to generate mixed vapor having a pressure lower than that the high pressure vapor.