Work

Capture of CO2 from Steam Reformer Flue Gases Using Monoethanolamine: Pilot Plant Validation and Process Design for Partial Capture

Year: 2022

Type: article

Abstract: Carbon dioxide (CO 2 ) capture from a slipstream of steam reformer flue gas (18-20 vol % wet CO 2 ) using 30 wt % aqueous monoethanolamine was performed for ∼500 h in a mobile test unit (∼120 kg CO 2 /h).Specific reboiler duties (SRDs) of 3.6-3.8MJ/kg CO 2 were achieved at 90% capture.The pilot data validate the modeling of off-design partial capture, that is, operation at lower CO 2 capture rates (at constant gas flow) than the absorption column was designed to achieve.This paper demonstrates that off-design partial capture enables significant energy savings (SRD, cooling) relative to on-design capture.The accrued savings depend on the column design (packing height, flooding approach) and the feed CO 2 concentration.Finally, a concept for stepwise deployment of carbon capture and storage in industries with high-CO 2 concentration sources (e.g., steel and cement manufacturing and refining) is introduced.Thanks to its inherent full-capture-ready design, the initial energy-efficient, off-design partial capture operation can be extended to full capture over time.

Source: Industrial & Engineering Chemistry Research

DOI: 10.1021/acs.iecr.2c02205

Authors: M. Biermann, F. Normann, F. Johnsson, R. Hoballah, K. Onarheim

Institutions: Chalmers University of Technology, Aker (Norway)

Language: English

Topic: Carbon Dioxide Capture Technologies

Subfield: Filtration and Separation

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Climate action, Affordable and clean energy, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $5,000