Calculation of the Aluminosilicate Half-Life Formation Time in the 2H Evaporator

Fondeur, F.F.

Savannah River Site (S.C.)

关键词: Evaporators;    Heat Transfer;    Radioactive Waste Facilities;    Aluminium Silicates;    Dissolution;   

DOI  :  10.2172/763271
RP-ID  :  WSRC-TR-2000-00267
RP-ID  :  DE-AC09-96SR18500
RP-ID  :  763271

美国|英语

来源: UNT Digital Library

【 摘 要 】

The 2H Evaporator contains large quantities of aluminosilicate solids deposited on internal fixtures. The proposed cleaning operations will dissolve the solids in nitric acid. Operations will then neutralize the waste prior to transfer to a waste tank. Combining recent calculations of heat transfer for the 2H Evaporator cleaning operations and laboratory experiments for dissolution of solid samples from the pot, the authors estimated the re-formation rate for aluminosilicates during cooling. The results indicate a half-life formation of 17 hours when evaporator solution cools from 60 degrees C and 9 hours when cooled from 90 degrees C.