Molten salt destruction process for mixed wastes
We are developing an advanced two-stage process for the treatment of mixed wastes, which contain both hazardous and radioactive components. The wastes, together with an oxidant gas, such as air, are injected into a bed of molten salt comprising a mixture of sodium-, potassium-, and lithium-carbonates, with a melting point of about 580{degree}C. The organic constituents of the mixed waste are destroyed through the combined effect of pyrolysis and oxidation. Heteroatoms. such as chlorine, in the mixed waste form stable salts, such as sodium chloride, and are retained in the melt. The radioactive actinides in the mixed waste are also retained in the melt because of the combined action of wetting and partial dissolution. The original process, consists of a one-stage unit, operated at 900--1000{degree}C. The advanced two-stage process has two stages, one for pyrolysis and one for oxidation. The pyrolysis stage is designed to operate at 700{degree}C. The oxidation stage can be operated at a higher temperature, if necessary.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10178077
- Report Number(s):
- UCRL-JC-112666; CONF-930873-21; ON: DE93018641; TRN: 93:018991
- Resource Relation:
- Conference: 2. international mixed waste symposium,Baltimore, MD (United States),17-20 Aug 1993; Other Information: PBD: Apr 1993
- Country of Publication:
- United States
- Language:
- English
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