Abstract: Starting from the low cost raw material sources for hydrogen production and according to all hydrogenation process of refinery that need an independent hydrogen plant, the factors affecting hydrogen cost and competition were analyzed to quantify the influence of carbon dioxide emission and national carbon tax on the processing route. Based on the raw material availability, economy and feasibility, suggestions for hydrogen production from different raw materials at different refineries are proposed.

Key words: hydrogen, oil refining, natural gas, coal, cost, carbon tax, competition