Method of radioactive offgas filtration and filter regeneration

Details Method of radioactive offgas filtration and filter regeneration Method of radioactive offgas filtration and filter regeneration

1978-07-12

1981-04-28

Yudkoff, Norman

Gas separation

Means within gas stream for conducting concentrate to collector

55 98, 55269, 55523, 55DIG9, 134 2, 134 5, 134 7, 55220, B01D 4604

Patent

active

042643414

ABSTRACT:
Method and device for effecting radioactive offgas filtration by means of a mass of filter material, and filter material regeneration, at temperatures in excess of 500.degree. C. in which substances to be filtered impinge on the filter material mass in at least one direction, filtration being effected by removing a layer of contaminated filter material in the direction opposed to the direction in which substances impinge on the filter material in order to remove the filtered substances for filter cleaning. Removal of the contaminated filter material is carried out by adding a fluxing agent to the filter material at operating temperatures for regenerating the filter material by means of a cleanup melt. This fluxing agent may be a glass frit, an alkali hydroxide or an alkali or alkaline earth metal salt.

REFERENCES:
patent: 770787 (1904-09-01), Thompson
patent: 2267918 (1941-12-01), Hildabolt
patent: 3557536 (1971-01-01), Ririe
patent: 3808775 (1974-05-01), Heller et al.
patent: 3810348 (1974-05-01), Byers et al.
patent: 3924030 (1975-12-01), Tatara et al.
patent: 3950152 (1976-04-01), Guon
patent: 4033117 (1977-07-01), Smith
patent: 4120668 (1978-10-01), Fraley

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