the invention described herein relates to a novel process that eliminates the need for post combustion co 2 capture from fired heaters in a petroleum refinery to achieve environmental targets by capturing co 2 in a centralized facility and providing fuel gas low in carbon to the fired heaters . it combines the pre - combustion capture of carbon dioxide with production of a hydrogen fuel source within a refinery to drastically reduce the carbon dioxide emissions of the plant . the hydrogen fuel is utilized for the process fired heaters and the fuel quality can be set to meet the refinery &# 39 ; s emissions objectives . moreover , the carbon dioxide captured can be sequestered and / or utilized for enhanced oil recovery .