HYDROGEN PRODUCTION FROM AN OXYFUEL COMBUSTOR

摘要

A system is provided for hydrogen production from a hydrogen and carbon containing fuel combusted within an oxyfuel combustor.The oxyfuel combustor combusts hydrogen and carbon containing fuel with oxygen at a non-stoichiometric ratio, typically fuel rich. In such an operating mode, products of combustion include steam, carbon dioxide, carbon monoxide and hydrogen. These products of combustion are then passed through a hydrogen separator. Remaining products of combustion can be optionally combusted at a stoichiometric ratio with oxygen in a second oxyfuel combustor discharging substantially only steam and carbon dioxide. A turbine can be provided downstream from the gas generator to produce power and eliminate carbon monoxide from the system.The system can be operated in a second mode where the gas generator combusts the fuel with oxygen at a stoichiometric ratio to maximize electric power generation without hydrogen production at periods of peak electric power demand.