High-Grade Hydrogen Production from Different Feedstock using Bubbling Fluidized-Bed Gasifier with Pressure Swing Adsorption

Greenhouse gas emissions have a severe impact on the environment and cause global warming, so that uncertainty climate change occurs. Renewable energy is a potential option to solve the problem mentioned above. Hydrogen is green energy which is no gas emissions are produced during application. Hydrogen can be produced from biomass as feedstock by the gasification process. Bubbling fluidized bed (BFB) is a kind of fluidized bed reactor in which proposed to produce syngas (mostly consists of H2 and CO). In the present study, the different biomass feedstocks (agriculture residues, municipal solid waste, macroalgae) are used for syngas production by using BFB and further produce the high grade of hydrogen by using pressure swing adsorption (PSA). In the gasification process, the gasification agent is injected from the bottom of BFB, and the syngas product is produced on the top side of BFB. The BFB is characterized by the bubbling of bed material and solid fuel. As a result, gasification of agricultural residues is a superior syngas production process not only cheaper in its feedstock but also obtain the highest syngas production rate based on the optimum condition. The influence of operating variables resulted that the highest gasification temperature is required, the air flow rate in the range of 1500 to 4500 kg/hr shows a higher CO production rate, and a higher steam flow rate is needed to enhance the H2 production rate.