Method and apparatus for testing a catalyst material
AssigneeThe Queen's University of Belfast
InventorsRoy Douglas, Andrew Woods
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Abstract
A method of ageing a catalyst material includes at least the steps of: (a) heating a gaseous stream; (b) adding a least one pure hydrocarbon gas and an oxygen-containing gas to the heated gaseous stream to provide a combined stream; and (c) passing the combined stream through the catalyst material. The use of at least one pure hydrocarbon gas and an oxygen-containing gas allows maximum re-circulation of the exit stream from the catalyst material for reuse, while maintaining the correct C, H and O proportions being provided in the combined stream to replicate realistic use of the catalyst material.
Claims20
A method of ageing a catalyst material comprising:
- (a) providing a gaseous stream comprising a background gas mix;
- (b) adding at least one pure hydrocarbon gas and an oxygen-containing gas to the gaseous stream to provide a combined stream;
- (c) passing the combined stream through the catalyst material;
- and
- (d) re-circulating greater than approximately 50% by volume of an exit stream from the catalyst material into the gaseous stream:
- (e) providing in (b) a balanced mix of said at least one pure hydrocarbon gas and an oxygen-containing gas to maintain the concentrations of said background gas mix in the re-circulated exit stream;
- and
- (f) heating said gaseous stream without combustion.
Catalyst ageing apparatus for ageing a catalyst material comprising:
- (a) at least one heater for heating a gaseous stream comprising a background gas mix wherein said at least one heater comprises at least one combustion heater;
- (b) a combiner to combine a least one pure hydrocarbon gas and an oxygen-containing gas to the gaseous stream to provide a combined stream;
- (c) a pathway for passing the combined stream through the catalyst material;
- (d) a pathway for re-circulating greater than approximately 50% by volume of an exit stream from the catalyst material into the gaseous stream;
- and
- wherein said combiner is arranged to provide a balanced mix of said at least one pure hydrocarbon gas and an oxygen-containing gas to maintain concentrations of said background gas mix in the re-circulated exit stream.
Dependencies are inferred from the claim text.