| 摘要 |
<p>A dual temperature extraction apparatus comprising a hot and cold tower with liquid and gas streams passing in countercurrent deuterium exchange relation therein, the gas being recycled from the top of the cold tower to the bottom of the hot tower, a humidifier section through which the said recycled gas stream and also the liquid stream from the hot tower passes, a dehumidifier between hot and cold tower through which both gas and liquid streams pass, means for heat exchange between humidifier and dehumidifier, means for heating cold inlet feed liquid and feeding it to the system at the top of the dehumidifier section at a point between the liquid outlet of the hot tower and the liquid input to the humidifier, means for recovering heat from a first portion of the liquid stream leaving the humidifier and passing it to waste, means for recycling a second portion of the liquid stream leaving the humidifier to the top of the cold tower, said humidifier recycle section and a booster section before entering the bottom of the hot tower and a portion of the liquid stream leaving the hot tower passes in reverse order and a separate humidifier section in parallel with the said humidifier recycle section and booster humidifier section with a portion of the said recycled gas and liquid streams passing through the separate humidifier section, and with the said heated input feed being applied to the top of the booster section and the recycle section is connected to the means for heat exchange between humidifier and dehumidifier, and means for taking an output of gas or liquid enriched in deuterium from the system.</p> |
