Toxic gas control for RF absorber fires
First Claim
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1. 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.
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Abstract
A method of controlling toxic outgassing of carbon impregnated polyurethanend 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.
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Citations
2 Claims
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1. A method of controlling toxic outgassing from smouldering and burning materials which produces hydrogen cyanide and/or hydrogen chloride under such conditions which comprises:
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mixing ammonia with steam; and spraying said ammonia-steam mixture on said materials to combine with gases produced by said materials. - View Dependent Claims (2)
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Specification
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Current Assigneethe united states of america as represented by the secretary of the navy
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Original Assigneethe united states of america as represented by the secretary of the navy
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InventorsRich, Alan H.
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Primary Examiner(s)Sebastian, Leland A.
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Application NumberUS05/689,692Time in Patent Office596 DaysField of Search169/47, 252/8US Class Current169/47CPC Class CodesA62C 5/008 for producing other mixture...
