1974 operation of the ICPP rare gas recovery facility

Bendixsen, C.L.; Germán, Fernando

doi:10.2172/4245488

Cited by 3 publications

(4 citation statements)

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“…To avoid possible crystallization in the cryogenic distillation column, the Xe is adsorbed on silica gel at -160 °C and 0.3 MPa. A cryogenic system designed to recover 85 Kr for beneficial use was operated at the Idaho Chemical Processing Plant for a number of years (Brown et al 1983;Hebel and Cottone 1982;Bendixsen and German 1975;Goossens et al 1991;Groenier 1985). The system was designed to treat gases at flow-rates up to 34 -51 m 3 /h (Bendixsen and German 1975).…”

Section: Chalcogel Synthesismentioning

confidence: 99%

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Strachan¹,

Chun²,

Matyáš³

et al. 2011

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SUMMARYMaterials were developed and tested in support of the U.S. Department of Energy, Office of Nuclear Energy, Fuel Cycle Technology Separations and Waste Forms Campaign. Specifically, materials are being developed for the removal and immobilization of iodine and krypton from gaseous products of nuclear fuel reprocessing unit operations.During FY 2011, aerogel materials were investigated for removal and immobilization of 129 I. Two aerogel formulations were investigated, one based on functionalized silica and the second on chalcogenbased glasses (i.e., chalcogels). A silica aerogel was tested at ORNL for total I 2 sorption capacity. It was determined to have 48 mass% capacity while having little physisorbed I 2 (I 2 not chemically bound within the aerogel). Metal organic framework (MOF) structures were investigated for the removal and storage of Kr and a new MOF with about 8 mass% capacity for Xe and Kr was formulated and tested. The selectivity can be changed from Xe > Kr to Xe < Kr simply by changing the temperature. A patent disclosure has been filed. Lastly, silicon carbide (SiC) was loaded with Kr. The diffusion of Kr in SiC was found to be less than detectable values at temperatures as high as 500°C.

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Section: Chalcogel Synthesismentioning

confidence: 99%

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Strachan¹,

Chun²,

Matyáš³

et al. 2011

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“…Irradiation of nuclear fuels results in the production of substantial quantities of various radioactive isotopes. With the establishment of more stringent environmental emission guidelines, several methods •have been proposed for removing these fission products/by-products from contaminated nuclear process off-gases [3,17,29,30,42]. Selective absorption is one of the more versatile processing schemes that has been commercially adapted to the decontamination of different reactor off-gases [5,14,15,39].…”

Section: Disclaimermentioning

confidence: 99%

“…Selective absorption is one of the more versatile processing schemes that has been commercially adapted to the decontamination of different reactor off-gases [5,14,15,39]. Several process solvents, including carbon tetrachloride [23,40], kerosene-base liquids [31], liquid nitrogen [3,4], nitrous oxide [30], liquid carbon dioxide [6,12,13,17,43], dichlorodifluoromethane [24,30,41], and trichlorofluoromethane [25], have been proposed for this and other applications. Considering solvent capacities, separation factors, and thermal and radiation stabilities, as well as overall process safety and economic.features, Steinberg [30] suggested in 1959 utilizing an absorption process employing dichloro~ifluoromethane (refrigerant-12) for stripping the noble gases from contaminated air streams.…”

Section: Disclaimermentioning

confidence: 99%

Selective absorption pilot plant for decontamination of fuel reprocessing plant off-gas

Stephenson¹,

Eby²,

Huffstetler³

1977

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A fluorocarbon-based selective absorption process for removing krypton-85, carbon-14, and radon-222 from the off-gas of conventional light water and advanced reactor fuel reprocessing plants is being developed at the Oak Ridge Gaseous Diffusion Plant in conjunction with fuel recycle work at the Oak Ridge National Laboratory and at the Savannah River Laboratory. The process is characterized by an especially high tolerance for many other reprocessing plant off-gas components. This report presents detailed drawings and descriptions of the second generation development pilot plant as it has evolved after three years of operation. The test facility is designed on the basis of removing 99 percent of the feed gas krypton and 99.9 percent of the carbon and radon, and can handle a nominal 15 scfm (425 slm) of contaminated gas at pressures from 100 to 600 psig (7.0 to 42.2 kg/cm2) and temperatures from minus 45 to plus 25°F (-43 to-4°C). Part of the development program is devoted to identifying flow sheet options and simplifications that lead to an even more economical and reliable process. Two of these applicative flow sheets are discussed .

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“…The only feasible approach is to separate and concentrate the Kr for long term storage under controlled conditions. Such a separation has in the past been achieved by cryogenic distillation (Bendixsen et al, 1968(Bendixsen et al, , 1971(Bendixsen et al, , 1973(Bendixsen et al, , 1975Barton, 1974;von Ammon, 1975;Bohnestingl et al. 1976;Chesne et al, 1976;Broothaerts et al, 1976;Kamiya et al, 1975) and also, on a pilot scale, by selective absorption in tluorocarbon solvents (Griftith, 1973, Hogg, 1972Steinberg, 1959;Taylor, 1963;Whatley, 1973;Merriman, 1975).…”

mentioning

confidence: 99%

Adsorptive separation of Kr from N₂‐Part II. Development of a pilot unit

Tezel¹,

Ruthven²,

Boniface³

et al. 1990

Can J Chem Eng

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Design and development of a pilot scale chromatographic process for separation of trace amounts of krypton from a nitrogen atmosphere is described. The system uses a large column (1.20 m × 0.055 m i.d.) packed with H‐mordenite adsorbent and operated under overload conditions. A preliminary economic evaluation suggests that this process is competitive with the conventional cryogenic distillation process.

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1974 operation of the ICPP rare gas recovery facility

Cited by 3 publications

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Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Selective absorption pilot plant for decontamination of fuel reprocessing plant off-gas

Adsorptive separation of Kr from N₂‐Part II. Development of a pilot unit

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1974 operation of the ICPP rare gas recovery facility

Cited by 3 publications

References 0 publications

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL

Selective absorption pilot plant for decontamination of fuel reprocessing plant off-gas

Adsorptive separation of Kr from N2‐Part II. Development of a pilot unit

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Adsorptive separation of Kr from N₂‐Part II. Development of a pilot unit