Technoeconomic Evaluation of MEA versus Mixed Amines and a Catalyst System for CO₂ Removal at Near-Commercial Scale at Duke Energy Gibson 3 Plant and Duke Energy Buck NGCC Plant

Techno-Economic Analysis of the Production of Liquid Biofuels from Sewage Sludge via Hydrothermal Liquefaction

“…Here, we have considered a linear dependence for the solubility. The total heating, cooling, and electric power demands by the overall amine system have been assumed to be proportional to the flow rate of amine to the absorber and are calculated from [ Q̇ h GT , Q̇ c GT , Ẇ el GT ] = V̇ MEA ABS [ q h GT , q c GT , w el GT ], where q h GT , q c GT , w el GT are the specific heating, cooling, and electricity required per unit volume of amine, assumed to be constant and equal to, 31 respectively, 0.27 MJ/kg, 0.40 MJ/kg, and 46.5 kWh/kg.…”

Green ethylene production in the UK by 2035: a techno-economic assessment

“…To separate ethylene from the mixed gas products of the electrolysers, vacuum pressure swing adsorption (VPSA) processes are used, 48,77 and any unconverted CO 2 is recovered and recycled at a 97% capture rate by mixed-amine CO 2 absorption. 78 The separation of the liquid co-products (acetic acid, alcohols) is also considered when their concentration in the electrolyte exceeds 20 wt%. The utility demands of the separation train are met by hydrogen boilers and renewable electricity imports because they cannot be heat-integrated with the low-temperature electrolysers.…”

Process modelling and economic evaluation of biopropane production from aqueous butyric acid feedstock

“…In process plants, operating costs are typically made up of raw materials costs, labour costs and other costs. The cost of feedstock (10 wt% butyric acid solution) has been estimated from the purchase prices of components shown in Table 1, for dried biomass-derived butyric acid [14] and process water [26] and raw material requirements for the amine absorber [27]. In chemical plants, the cost of catalysts can vary between 3% and 10% of total equipment costs [24,25].…”

“…The capital costs of other items have been estimated using the typical lang factors [29]. and presented in Table 3 The total raw material costs have been calculated based on individual costs of biomassderived butyric acid, process water and amine absorber [14,[26][27]. The butyric acid feedstock requirement for one operating year comes to $24.25 million based on$580/tonne [14].…”