Optimal design of an MDEA CO2 capture plant for low-carbon hydrogen production — A rigorous process optimization approach
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Date
2021-12-15
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Journal Article
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Abstract
This work presents an optimized design of a methyl diethanolamine CO2 capture unit for clean hydrogen production via steam methane reforming of natural gas, where CO2 is captured from the pressurized water-gas shifted syngas. We propose a modified version of the standard MDEA-based CO2 capture process flowsheet, and we optimize the operating conditions by solving a multi-objective optimization problem to minimize energy consumption while maximizing the CO2 capture rate. In this paper, we opted to model the CO2 capture plant using an equilibrium-based approach. To validate the optimization results obtained and to verify the absorber and desorber dimensions, we sized both columns. Packing heights remain below the threshold of 15 metres and productivity ranges between 0.74 tCO2/m3h at a capture rate of 90% and 0.35 tCO2/m3h for a CO2 recovery of 99.8% respectively.
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published
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Journal / series
Volume
279
Pages / Article No.
119715
Publisher
Elsevier
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Subject
CO2 capture with MDEA; Low-carbon H2 production with CO2 capture; Energy consumption minimization; Process optimization
Organisational unit
03484 - Mazzotti, Marco (emeritus) / Mazzotti, Marco (emeritus)