Toxic gas control for RF absorber fires
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorAlan H. Rich
Life of this patent
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Abstract
A method of controlling toxic outgassing of carbon impregnated polyurethane nd other radio-frequency-absorbing materials when burning or smouldering. Ammonia gas and water or steam are sprayed onto smouldering material to combine with hydrogen cyanide (HCN) and hydrogen chloride (HCl) formed duringburning to yield ammonium cyanide plus ammonium chloride which yields relatively harmless precipitates when cooled.
Claims2
A method of controlling toxic outgassing from smouldering and burning materials which produces hydrogen cyanide and/or hydrogen chloride under such conditions which comprises:
- mixing ammonia with steam;
- and
- spraying said ammonia-steam mixture on said materials to combine with gases produced by said materials.
Dependencies are inferred from the claim text.