Filter, composition and process for cleaning feed and exhaust fluids and method for eliminating PFAS and other noxious impurities in fluids
AssigneeStandard H2, Inc.
InventorMariavicenta Wasas
Life of this patent
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Abstract
A fluid filter, filtering medium composition, and associated process for removing contaminants from feed and exhaust fluids used in fuel cell electricity generation, laboratories, the semiconductor and other industries to improve performance and extend useful equipment lifetimes and to clean fluids of sulfur compound contaminants, as well as to remove noxious NOx and halogen contaminants from feed and exhaust gases.
Claims16
A fluid filter for attachment to a gas or liquid line, such fluid filter comprising a housing packed with a filtering medium composition of granular particles ranging in size from about 15 mm to about 0.001 mm and consisting of a homogeneous composition of oxides of aluminum, antimony, barium, beryllium, bismuth, boron, cadmium, calcium, cerium, cesium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, germanium, hafnium, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, molybdenum, neodymium, nickel, praseodymium, rhenium, rhodium, samarium, silicon, silver, strontium, titanium, vanadium, ytterbium, yttrium, zinc and zirconium, further comprising elemental gold, palladium, and platinum collectively comprising between 0.000001% and 0.002% of the filtering medium composition.
A filtering medium composition of granular particles ranging in size from about 15 mm down to about 0.001 mm and consisting of a homogeneous composition of the oxides of aluminum, antimony, barium, beryllium, bismuth, boron, cadmium, calcium, cerium, cesium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, germanium, hafnium, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, molybdenum, neodymium, nickel, praseodymium, rhenium, rhodium, samarium, silicon, silver, strontium, titanium, vanadium, ytterbium, yttrium, zinc and zirconium plus elemental gold, palladium, and platinum, wherein percentages of components are given by total weight and:
- oxides of copper comprise at least 80% of the filtering medium composition,
- non-copper oxides comprise between 0.001% and 19.9999% of the filtering medium composition, and
- elemental gold, palladium and platinum comprise between 0.000001% and 0.002% of the filtering medium composition.
A process for removing hydrogen sulfide, sulfur containing compounds such as thiols or mercaptans, oxides of nitrogen, PFAS substances and halogens from a gas or liquid stream that lowers the concentration of these contaminants to levels that are below the limit of detection of standard laboratory instrumentation by passing the gas or liquid stream through a fluid filter, such filter comprising a filter housing with a contact temperature ranging from about ambient to about 500 C that is packed with a filtering medium composition of granular particles ranging in size from about 15 mm down to about 0.01 mm and consisting of a homogeneous composition of the oxides of aluminum, antimony, barium, beryllium, bismuth, boron, cadmium, calcium, cerium, cesium, chromium, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, germanium, hafnium, holmium, indium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, molybdenum, neodymium, nickel, praseodymium, rhenium, rhodium, samarium, silicon, silver, strontium, titanium, vanadium, ytterbium, yttrium, zinc and zirconium, further comprising elemental gold, palladium, and platinum collectively comprising between 0.000001% and 0.002% of the filtering medium composition.
Dependencies are inferred from the claim text.