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Chemical Engineering - Fertiliser Technology

Exercise : Fertiliser Technology - Section 4
36.
Catalyst used in the oxidation of ammonia is
platinum-beryllium
platinum-rhodium
cobalt-molybdenum
platinum-molybdenum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
P2O5 percentage in the phosphoric acid produced by wet process is about
10
30
50
70
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Ammonia synthesis gas is produced from fuel oil by
steam reforming
hydrocracking
partial oxidation
hydrogenation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature
rate of reaction is very low.
very high pressure is required resulting in costly pressure vessel.
space velocity of gas is very low resulting in decreased conversion.
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Iron is not used alone as a catalyst in ammonia synthesis, because
its activity declines rapidly, if heated to above 520°C.
it decomposes ammonia.
it gets oxidised above 500°C.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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