| Publication Date |
2014 |
| Personal Author |
Choi, A. S. |
| Page Count |
66 |
| Abstract |
The existing DWPF melter off-gas flammability model for the nitric-formic acid flowsheet feeds has been revised to reflect the upcoming reductant change from formic to glycolic acid. The necessary data for the model revision was obtained during Phase 2 of the Cold cap Evaluation Furnace (CEF) test, which was completed on March 21, 2014 after 24 days of round-the-clock feeding and pouring, including a total downtime of approximately 20 hours due to equipment failures. Specifically, the CEF was run to generate steady state melter off-gas data during the first 10 days using two nitric-glycolic acid flowsheet feeds prepared from a Sludge Batch 6 (SB6) simulant at 100% and 125% acid stoichiometry. Each feed was run under both bubbled and non-bubbled conditions, while maintaining the CEF vapor space temperature constant for at least two hours each targeting at 700, 600, 500, 400, 350, and <300 DGC for a total of 24 steady state runs. During the next 8 days, the CEF was run at nominal vapor space temperature of 700 DGC to generate offgas surge data using the 100% acid stoichiometry feed under both bubbled and non-bubbled conditions. The remaining days were spent on producing additional steady state data using the 100% acid stoichiometry feed spiked with excess antifoam as well as re-running some of the earlier steady state runs. |
| Keywords |
|
| Source Agency |
|
| NTIS Subject Category |
|
| Corporate Authors |
Savannah River National Lab., Aiken, SC.; Department of Energy, Washington, DC. |
| Supplemental Notes |
Sponsored by Department of Energy, Washington, DC. |
| Document Type |
Technical Report |
| NTIS Issue Number |
201503 |
| Contract Number |
|
