Method for heavy-water production by H.sub.2 S-H.sub.2 O chemical exchange process
Atomic Energy of Canada Limited
A heavy water production stage in a bithermal H.sub.2 S gas - H.sub.2 O liquid exchange plant wherein the cold tower is operated under temperature and pressure conditions such that H.sub.2 S in the liquid phase is formed and is maintained in the separation units (sieve trays or plates) of the cold tower. It has been found that the presence of liquid H.sub.2 S acts as an efficient anti-foaming agent.
1ClaimsFirst of 1
- 1
A method of operation of a stage in a bithermal H.sub.2 S gas - H.sub.2 O liquid isotope exchange process having hot and cold exchange regions incorporating separation units, with the H.sub.2 S gas and the H.sub.2 O liquid passing in counter-current isotope exchange relationship through the separation units in the regions, comprising operating the stage such that H.sub.2 S in the liquid phase is formed and is maintained in the separation units, the proportion of H.sub.2 S liquid to H.sub.2 O…
2Description
This invention relates to an improvement to the method of operation of a heavy water production plant and more particularly to a method of operating an H.sub.2 S - H.sub.2 O isotope exchange process of the Girdler-Sulphide (GS) type.