Discussion
Assertion (A): Catalytic incineration is preferred where fuel cost dominates.
Reason (R): A catalyst allows oxidation at roughly four hundred degrees rather than eight hundred.
Select the correct answer from the options below.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason is the mechanism. The fuel needed is what it takes to raise the whole gas stream to the operating temperature, so halving that temperature roughly halves the heat duty. Where fuel dominates the operating cost - a continuous stream of moderate concentration - catalytic incineration wins, provided the stream is free of the halogens, sulphur and metals that would poison the catalyst.
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