Thermodynamic Modeling of the SRS Evaporators: Part IV. Incorporation of High Caustic Aluminosilicate Solubility Data

Jantzen, C. M.

Savannah River Site (S.C.)

关键词: Evaporators;    Criticality;    Saturation;    Sodium Uranates;    Computerized Simulation;   

DOI  :  10.2172/809738
RP-ID  :  WSRC-TR-2002-00330
RP-ID  :  AC09-96SR18500
RP-ID  :  809738

美国|英语

来源: UNT Digital Library

【 摘 要 】

Accumulations of two solid phases (a nitrated aluminosilicate) and sodium diuranate, in the form of scale, caused the SRS 2H Evaporator pot to become completely inoperable in October 1999. The accumulation of the sodium diuranate phase, which selectively precipitated with the aluminosilicate phase, caused criticality concerns in the 2H Evaporator. In order to understand the role of steady state saturation on the scale formation, solutions processed from the SRS 2H, 2F, and 3H Evaporators were evaluated with a commercially available thermodynamic equilibrium code known as Geochemist's Workbench