Publication: Modelling and optimization of hydrogen purification performance by membrane from industrial waste of methanol production using mathcad and design expert
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Date
2023-07-02
Authors
Irfan Ali Qazi
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Abstract
The effect of climate change as a result of greenhouse gas emission can be
easily seen across the globe. Carbon dioxide, which is one of the most potent
greenhouse gases is released from anthropogenic activities through combustion of
fossil fuels for energy. There is an increasing interest to migrate from fossil fuel
energy dependency to a greener hydrogen economy. To meet this challenge,
hydrogen should be made cheap and readily available for both industrial and public
consumption. In this research, the possibility of recovering and purifying hydrogen
from methanol purge gas is explored. The polyetherimide membrane was used to
achieve highly purified hydrogen from methanol purge gas (MPG) containing
hydrogen, carbon dioxide, nitrogen, carbon monoxide and methane gas. The novelty
of this research is that a penta-nary component of MPG mixture was applied in
Mathcad and Design Expert software in which three input parameters which are
membrane area, membrane thickness and stage cut were varied in order to achieve
maximum hydrogen purity and recovery. The model showed MAPE error of 5.06%
thereby suggesting that the complete mixing model was suitable for enriching
hydrogen from methanol purge gas using membrane. The simulation runs using
Design Expert yielded semi empirical correlations capable of producing accurate
prediction as R2 > 0.973 and P-value ≤ 0.002 for all the eight responses. When the
membrane parameters were optimized at 80.0 cm membrane area, 0.25 um membrane thickness and 0.3395 stage cut, the maximum hydrogen purity and
recovery from this model achieved 99.99% and 53.89%, respectively