Waste heat recovery from offshore gas turbines to produce hydrogen and heat via Alkaline Electrolyzers

In the last years, hydrogen production not only as a green fuel but also as an energy career has gained much attention. This is while, hydrogen can be considered as one of the main chains of alternative fuel production like green methanol and green ammonia. In this study, the waste heat of the offshore installed gas turbines is utilized to produce hydrogen via employing Alkaline electrolyzers. In most cases, gas turbines are installed to cover the electricity consumption of the offshore facilities and waste heat recovery from these turbines is not a matter of concern. In this paper, the energy content of the exhaust gasses of the gas turbines is utilized to run steam and organic Rankine cycle and then generated surplus power is fed to electrolyzers to produce hydrogen. Results revealed that under the base condition exhaust temperatures of 450, 525 and 600 ˚C lead to hydrogen production of 1308, 1769 and 2191 ton per year, respectively.