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US 6,187,988 B1Granted
Process for microwave decomposition of hazardous matter
OwnerChang Yul Chainventor
Life of this patent
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Abstract
This process occurs in the presence of activated carbon or its equivalent by decomposing adsorbed hazardous materials, such as hydrazine and microorganisms, on the carbon surface by radiofrequency energy in the microwave range at near ambient conditions of temperature and pressure. Further microwave oxidation to nonhazardous gases occurs in the presence of a microwaves enhanced oxidation catalyst.
Claims18
A process for water-borne hazardous matter decomposition comprising:
- adsorbing said water-borne hazardous matter with a bed of carbonaceous material while exposing to microwaves;
- treating said bed of carbonaceous material with a purge gas to remove decomposition products;
- and
- passing said purge gas through a microwave enhanced bed of oxidation catalysts while adding sufficient oxygen to substantially oxidize all said decomposition products, wherein said oxidation catalysts are deposited on a substrate impregnated with metal carbide.
1 more element
A process for gas-borne hazardous matter decomposition comprising:
- adsorbing said gas-borne hazardous matter with a bed of carbonaceous material while exposing to microwaves, wherein said gas-borne hazardous matter resides within a carrier gas substantially free of oxygen;
- and
- passing said carrier gas, which contains decomposition products from said gas-borne hazardous matter, through a microwave enhanced bed of oxidation catalysts while adding sufficient oxygen to substantially oxidize all said decomposition products, wherein said oxidation catalysts are deposited on a substrate impregnated with metal carbide.
A process for the environmental degradation of hydrazine and its derivatives comprising:
- exposing said hydrazine and its derivatives to a bed of carbonaceous material, which is selected from the group consisting of activated carbon, char, soot, pyrolytic carbon, carbon black, activated charcoal, and metal carbides, which is contained in a microwave reactor, which is selected from the frequency range consisting of 500 to 5000 Mhz, and which produces gaseous decomposition products;
- exposing said gaseous decomposition products to a bed of oxidation catalysts deposited upon a microwave absorbing substrate while adding sufficient oxygen to substantially oxidize all said decomposition products, and which is further contained in said microwave reactor;
- and moving said gaseous decomposition products from said bed of carbonaceous material through said bed of oxidation catalysts by a purge gas.
Dependencies are inferred from the claim text.