PROCESS FOR THE REMOVAL OF CARBON MONOXIDE, HYDROGEN, CARBON DIOXIDE AND WATER FROM A GAS

摘要

PURPOSE: A removing method of carbon monoxide and hydrogen as well as carbon dioxide and water from air for the production of high purity nitrogen gas is provided. CONSTITUTION: A process for the removal of carbon monoxide, hydrogen, carbon dioxide and water from a feed gas containing oxygen, comprising compressing the feed gas and thereby heating the feed gas by heat of compression, contacting the heated feed gas with a catalyst to oxidise the carbon monoxide to carbon dioxide (and partially converting hydrogen to water) using said heat of compression and so forming a carbon monoxide depleted gas stream, contacting the carbon monoxide depleted gas stream with a solid adsorbent to remove at least water therefrom to produce a carbon monoxide and water depleted gas stream, and contacting the carbon monoxide and water depleted gas stream with a catalyst to oxidise the remaining hydrogen to water and an adsorbent to adsorb the resulting water and any carbon dioxide.