Mobile pilot plant for CO2 capture in biogas upgrading using 30 wt% MEA

•Biogas can be upgraded for distribution with the described mobile pilot plant.•The plant can produce reliable steady state data.•A minimum specific reboiler duty of 3.7 MJ/kg CO2 was achieved with 30 wt% MEA.•Absorber temperatures above 90 °C are observed when treating biogas.•Loading of 30 wt% MEA...

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Bibliographic Details
Published in:Fuel (Guildford) 2023-10, Vol.350, p.128702, Article 128702
Main Authors: Jørsboe, Jens Kristian, Vinjarapu, Sai Hema Bhavya, Neerup, Randi, Møller, Andreas Christian, Jensen, Søren, Abildskov, Jens, Fosbøl, Philip
Format: Article
Language:English
Subjects:
Amine scrubbing
Biogas upgrading
Carbon capture
Mobile plant
Monoethanolamine
Pilot-scale
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Summary:•Biogas can be upgraded for distribution with the described mobile pilot plant.•The plant can produce reliable steady state data.•A minimum specific reboiler duty of 3.7 MJ/kg CO2 was achieved with 30 wt% MEA.•Absorber temperatures above 90 °C are observed when treating biogas.•Loading of 30 wt% MEA solvents are predicted with density measurements. This study utilizes a new mobile pilot plant to capture CO2 from real biogas with 30 wt% monoethanolamine (MEA). The pilot plant is described in detail and validated by data reconciliation showing that the pilot plant produces reliable steady state data. It is demonstrated that the pilot plant can upgrade 32 kg biogas per hour by capturing 20 kg CO2 per hour. Further, the pilot plant can achieve below 2.5 mol% CO2 in the methane product at a specific reboiler duty of 3.74 GJ per ton of CO2. The absorber column was found to be operated close to pinch conditions as temperatures reached above 90 °C giving a potential for process optimization and heat integration.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2023.128702