Economic Assessment of Green Hydrogen Production from Biomass Gasification with Chemical Absorption and Membrane -based CO2 Capture
Chemical Engineering Transactions(2022)
摘要
Development of environmentally friendly energy carriers is of great importance today in the attempt to reduce the global warming and climate change. Hydrogen is seen as a promising energy carrier for the future low carbon economy on condition that it is produced in an environmentally friendly fashion as well as in energy and cost-effective ways. This work is evaluating the techno-economic implications of green hydrogen production from biomass gasification with CO2 capture using various chemical gas-liquid absorption and membrane systems (including hybrid ones). The evaluated concepts have a capacity of 50,000 Nm3/h high purity hydrogen (> 99.95 % vol.) with a minimum 90 % CO2 capture rate. As the results show, the biomass gasification integrated with chemical absorption and membrane systems for CO2 removal has promising potential to give a high overall energy efficiency (about 57 - 59 %), low specific CO2 emissions (about 55 - 60 kg/t hydrogen) and better environmental indicators (e.g., specific CO2 emissions) than current fossil-based hydrogen production concepts.
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关键词
biomass gasification,green hydrogen production,co2
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