PROCESS FOR PRODUCING AMMONIA SYNTHESIS GAS

摘要

A PROCESS FOR PRODUCING AMMONIA SYNTHESIS GAS, WHERE A NATURAL GAS FEEDSTOCK (10) IS REFORMED IN A PRIMARY STEAM REFORMER (12) AND IN A SECONDARY REFORMER (14) AT A PRESSURE OF AT LEAST 35 BAR; THE PRODUCT SYNGAS (16) AT THE OUTPUT OF THE SECONDARY REFORMER IS COOLED AND SUBJECT TO CATALYTIC MEDIUM-TEMPERATURE SHIFT, CONVERTING THE CO INTO C02 AND H2; DOWNSTREAM SAID MEDIUM-TEMPERATURE SHIFT, THE CARBON DIOXIDE IS REMOVED FROM THE SYNGAS BY PHYSICAL ABSORPTION.