MELTING OF GLASS BATCH: MODEL FOR MULTIPLE OVERLAPPING GAS-EVOLVING REACTIONS

Journal Article · Fri Aug 10 00:00:00 EDT 2012 · Thermochimica Acta

DOI:https://doi.org/10.1016/j.tca.2012.04.019· OSTI ID:1047985

Pokorny, Richard; Pierce, David A; Hrma, Pavel R

In this study, we present a model for the kinetics of multiple overlapping reactions. Mathematical representation of the kinetics of gas-evolving reactions is crucial for the modeling of the feed-to-glass conversion in a waste-glass melter. The model simulates multiple gas-evolving reactions that occur during heating of a high-alumina high-level waste melter feed. To obtain satisfactory kinetic parameters, we employed Kissinger's method combined with least-squares analysis. The power-law kinetics with variable reaction order sufficed for obtaining excellent agreement with measured thermogravimetric analysis data.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1047985
• Report Number(s): PNNL-SA-84913; THACAS; 830403000; TRN: US201216%%606
• Journal Information: Thermochimica Acta, Vol. 541, Issue 10; ISSN 0040-6031
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
GLASS
HEATING
KINETICS
MELTING
SIMULATION
THERMAL GRAVIMETRIC ANALYSIS
WASTES