Optimal design of an MDEA <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e947" altimg="si92.svg"><mml:msub><mml:mrow><mml:mi mathvariant="normal">CO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> capture plant for low-carbon hydrogen production — A rigorous process optimization approach

This work presents an optimized design of a methyl diethanolamine CO 2 capture unit for clean hydrogen production via steam methane reforming natural gas, where is captured from the pressurized water-gas shifted syngas. We propose modified version standard MDEA-based process flowsheet, and we optimize operating conditions by solving multi-objective optimization problem to minimize energy consumption while maximizing rate. In this paper, opted model plant using equilibrium-based approach. To validate results obtained verify absorber desorber dimensions, sized both columns. Packing heights remain below threshold 15 metres productivity ranges between 0.74 t /m 3 h at rate 90% 0.35 recovery 99.8% respectively. • configuration low-carbon H gas. The optimal set that minimizes are found problem. Feasible column designs, with packing metres, possible even high rates ( > 98 % ).