A catalytic plasma exhaust purification system
For the plasma exhaust clean-up of a fusion reactor a process concept based on the hydrogen isotope purification through palladium/silver alloy permeators combined with selective catalytic reaction steps is proposed, which avoids intermediate conversion of impurities into water. To recover tritium from tritiated impurities ammonia is decomposed into the elements inside the permeators; water is reduced catalytically by carbon monoxide into carbon dioxide and hydrogen; and hydrocarbons are cracked into carbon and hydrogen on a nickel catalyst. Experimental results on the reactivity, consumption and regeneration of the catalysts are given. The permeation rate of hydrogen through palladium/silver alloy was found to be largely independent of the impurities CO, CO/sub 2/, H/sub 2/O and CH/sub 4/. Technological requirements in view of NET are discussed.
- Research Organization:
- Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Radiochemie; Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan)
- OSTI ID:
- 5850078
- Report Number(s):
- CONF-880505-
- Journal Information:
- Fusion Technol.; (United States), Vol. 14:2; Conference: 3. topical meeting on tritium technology in fission, fusion and isotopic applications, Toronto, Canada, 1-6 May 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROGEN
DIFFUSION
NET TOKAMAK
TECHNOLOGY ASSESSMENT
PALLADIUM ALLOYS
ATOM TRANSPORT
SILVER ALLOYS
TRITIUM EXTRACTION PLANT
IMPURITIES
CARBON DIOXIDE
CARBON MONOXIDE
CATALYSIS
CLEANING
EXHAUST GASES
METHANE
NICKEL
PURIFICATION
ALKANES
ALLOYS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
FLUIDS
GASEOUS WASTES
GASES
HYDROCARBONS
INDUSTRIAL PLANTS
ISOTOPE SEPARATION PLANTS
METALS
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
NUCLEAR FACILITIES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METAL ALLOYS
RADIATION TRANSPORT
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
TRANSITION ELEMENTS
WASTES
700206* - Fusion Power Plant Technology- Environmental Aspects
700205 - Fusion Power Plant Technology- Fuel
Heating
& Injection Systems
400201 - Chemical & Physicochemical Properties