Catalytic CO2 Desorption Study of Tri-Solvent MEA-EAE-DEEA with Five Solid Acid Catalysts

To achieve the CO2 emission control as urgent task of Carbon Peak and Neutrality, desorption experiments were performed with a new tri-solvent MEA-EAE(2-(ethylamino)ethanol)-DEEA(N, N-diethylethanolamine) five solid acid catalysts: blended catalysts γ-Al2O3/H-ZSM-5 = 2:1, H-Beta (Hβ), H-mordenite, HND-8, HND-580 H2SO4 replacement. A series sets in typical recirculation process by means both heating directly at 363 K temperature programming method within 303~358 to evaluate key parameters: average rate (ADR), heat duty (HD), factors (DF). After analyses, 0.5 + 2 mol/L MEA-EAE-DEEA catalyst possessed best act relatively low amine regeneration temperatures minimized HD biggest DF among other catalysts. Comparing tri-solvents studied, order was MEA-BEA-DEEA HND-8 > ≈ MEA-EAE-AMP HND-8. This combination has its own advantage big cyclic capacity wider operation region loading range lean rich solution (αlean~αrich), which is applicable an industrial scrubbing pilot plant carbon capture.