Project ForgeChemical Technology
Inorganic Chemical Industries
GATE 2017
Medium
The purpose of the methanation reaction used in ammonia plants is to
- remove CO as it is a catalyst poison
- Bincrease the amount of hydrogen
- Cremove sulphur as it is a catalyst poison
- Dutilize methane as a catalyst for ammonia synthesis
Explanation
Methanation converts residual CO (and CO2) to methane, removing CO because it poisons the iron-based ammonia synthesis catalyst.
Source: GATE CH 2017 (2017)
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