How can calculate the energy efficiency of a hydrogen produced from agricultural residual biomass gasification process in Aspen plus software?
Katerine Acevedo Serrano
The specific gasification rate (SGR) is the quantity of biomass fuel utilized per unit time per unit reactor area, which is typically between 110 and 210 [kg/h/m2] (Alexis 2005). Where Gt denotes the fuel mass flow rate (kg/h) and S denotes the reactor cross-sectional area (m2).
However, gasification is a process that turns organic or fossil-based carbonaceous materials into carbon monoxide, hydrogen, and carbon dioxide at high temperatures (>700°C), without burning, and with a regulated quantity of oxygen and/or steam.
Hi Katerine,
It depends on the definition of energy efficiency. You can assume a boundary for the process and determine inlet and outlet energy streams.
Inlet energy streams could be biomass (m [kg/h] * LHV [kJ/kg]), heats added to the system through steam or other sources, pumps power, etc.
The outlet energy streams are the produced energy in the form of syngas or hydrogen and work produced through a turbine.
Another indicator of the process performance is the Levelized costs of hydrogen (LCOH), which indicates the costs of 1 kg of hydrogen production.
Please see this paper for more information:
Article Hydrogen production from biomass through integration of anae...
Regards,
Abdollah
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