PROCESS FOR THE PREPARATION OF AMMONIA SYNTHESIS GAS

摘要

A process is provided herein for the preparation of ammonia synthesis gas by steam reforming and/or partial oxidation of a hydrocarbon feedstock. Such process includes the further steps of catalytically converting a part of the synthesis gas to methanol. Such prepared methanol is liquified and separated from remaining nitrogen-rich gas. The nitrogen-depleted methanol is then reconverted to hydrogen and carbon oxides gases. Such gases are recombined with the remainder of the nitrogen-containing synthesis gas to obtain stoichiometric ammonia synthesis gas.