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How to read this diagram?

It explains that CO is almost totally oxidized at a temperature of only 130C (270F) – provided that Firecat® has reached its operating temperature of about 400C (750F) before.

How is it possible that our combustor can maintain a operating temperature of 400C (750F) while inlet temperature is considerably lower? Shouldn’t it be cooled down immediately by flue gas of which temperature is so much lower? Your guess is right – but there’s exothermal chemical reaction taking place within the combustor. The combustor is producing its own heat, provided it’s getting enough fuel.

There’s an easy test to prove Firecats® performance:

Just take a propane burner; yes, the same that you’re taking outdoors. Heat up the combustor till it starts glowing. Now turn off the burner – and restart the gas (without igniting it again). Just let the gas stream thru the combustor: it will then completely “burn” (better: oxidize) inside your Firecat®; though without flames. In this case operating temperature can be maintained even though the gas is not pre-heated. Since there’ll never be such a concentration of burnable matter in flue gas as it is in propane, our recommendation is that flue gas should be between 260C (500F) and 370C (700F) when entering the combustor.

Carbon Monoxide OxidationOxygen Dissociation

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