VAC*TRAX - thermal desorption for mixed wastes
Conference
·
OSTI ID:229507
- RUST-Clemson Technical Center, Anderson, SC (United States)
The patented VAC*TRAX process was designed in response to the need to remove organic constituents from mixed waste, waste that contains both a hazardous (RCRA or TSCA regulated) component and a radioactive component. Separation of the mixed waste into its hazardous and radioactive components allows for ultimate disposal of the material at existing, permitted facilities. The VAC*TRAX technology consists of a jacketed vacuum dryer followed by a condensing train. Solids are placed in the dryer and indirectly heated to temperatures as high as 2600{degrees}C, while a strong vacuum (down to 50 mm Hg absolute pressure) is applied to the system and the dryer is purged with a nitrogen carrier gas. The organic contaminants in the solids are thermally desorbed, swept up in the carrier gas and into the condensing train where they are cooled and recovered. The dryer is fitted with a filtration system that keeps the radioactive constituents from migrating to the condensate. As such, the waste is separated into hazardous liquid and radioactive solid components, allowing for disposal of these streams at a permitted incinerator or a radioactive materials landfill, respectively. The VAC*TRAX system is designed to be highly mobile, while minimizing the operational costs with a simple, robust process. These factors allow for treatment of small waste streams at a reasonable cost.
- Research Organization:
- USDOE Morgantown Energy Technology Center, WV (United States)
- DOE Contract Number:
- AC21-92MC29105
- OSTI ID:
- 229507
- Report Number(s):
- DOE/METC--96/1021-Vol.1; CONF-9510108--Vol.1; ON: DE96000551
- Country of Publication:
- United States
- Language:
- English
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