0 votes 0 votes The purpose of methanation reaction used in ammonia plants is to remove $CO$ as it is catalyst poison increase the amount of hydrogen remove sulphur as it is a catalyst poison utilize methane as a catalyst for ammonia synthesis Others gate2017 + – Milicevic3306 asked Mar 26, 2018 • edited Oct 15, 2020 by soujanyareddy13 Milicevic3306 7.9k points answer See all 0 reply