Investigation of biomass gasification hydrogen and electricity co-production with carbon dioxide capture and storage

Biomass is one of the renewable energy resources which can be used instead of fossil fuels to diminish environment pollution and emission of greenhouse gases. Hydrogen as a biomass is considered as an alternative fuel which can be derived from a variety of domestically available primary sources. In this paper, a hydrogen and electricity co-generation plant with rice husk is proposed. Rice husk with water vapor and oxygen produces syngas in gasifier. In this design, electricity is generated by using two Rankine cycles. The Results show that the net electric efficiency and hydrogen production efficiency are 1.5% and 40.0%, respectively. Hydrogen production is 1.316 kg/s in case which carbon dioxide is gathered and stored. The electricity generation is 5.923 MWe. The main propose of implementing Rankine cycle is to eliminate hydrogen combustion for generating electricity and to reduce NOx production. Furthermore, three kinds of membranes are studied in this paper.

► Large scale co-production of hydrogen and electricity from syngas was simulated.
► Membrane separation unit was used in this study.
► Thermodynamic analysis was developed in order to model the whole power plant.
► Two Rankine cycles has been used to eliminate hydrogen combustion.
► Comparing results in case of CO2 capture and ventilation was done.