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Lean solvent CO2 loading mol CO2/mol MEA 0.15-0.30 0.5-3.1 2 2 1 1-4 1 0.13 0.075 0.5-1.8 35-250 70-75 14-30 70-75 9-19 99-99.8 5.86-15.16 75-85 0.22 Triangular(0.17,0.22,0.25) 1.5 Triangular(0.5,1.5,3.1) 2 - 2 - 1 - 2 Uniform (1,4) 1 - 0.13 - 0.075 - 0.8 Triangular (0.5,0.8,1.8) 207 Triangular(150,207,250) 75 Uniform (70,75) 26 Triangular(14,26,30) 75 Uniform (70,75) 14a Uniform (9,19) 99.5 Uniform (99,99.8) 13.79 Triangular(5.86,13.79,15.16) 80 Uniform (75,85) Nominal MEA make-up MEA loss (SO2) MEA loss (NO2) MEA loss (HCl) MEA loss (exhaust gas) NH3 generation Caustic consumption in MEA reclaimer Activated carbon use Cooling water makeup Solvent pumping head Pump efficiency Gas-phase pressure drop Fan efficiency Equiv. elec. requirement CO2 product purity CO2 product pressure Compressor efficiency kg MEA/tonne CO2 mol MEA/mol SO2 mol MEA/mol NO2 mol MEA/mol HCl ppm mol NH3/mol MEA oxidized kg NaOH/tonneCO2 kg C/tonne CO2 m3/tonne CO2 kPa % kPa % % regeneration heat wt% MPa % a For retrofit applications, nominal value is 25. 4. Cost Model Development The CO2 capture and sequestration system cost model is directly linked to the performance model. The cost model follows the framework used in the IECM to ensure consistency in economic calculations. There are four types of cost calculated by this model based on the available data (Smelster et al., 1991; Hendriks, 1994; Leci, 1996; Chapel et al., 1999; Simbeck, 1999; Desideri and Paolucci, 1999; Jeremy and Herzog, 2000). 4.1 Capital Cost The total capital requirement (TCR) of a system is calculated as the sum of direct equipment costs (which depend on one or more performance variables that determine the size or capacity of the component), plus various indirect costs that are estimated as fractions of the total direct cost following the EPRI cost estimating guidelines (TAG, 1993). The capital cost model is based on the cost and flow rate information obtained from Fluor Daniel Inc (Fluor Daniel, 1998). It is assumed that there are multiple trains installed to perform the CO2 capture operation. Based on the same source, the maximum train size has been assumed to be 5000 tonnes per day of CO2. Based on the actual CO2 capture rate ( m• ) the minimum number of trains required to be CO2 installed (Nmin) is determined. Different equipments have different maximum capacity limits. So, (En,i) defines the number of equipments required per train. En,i: Each train consists of the following pieces of equipment: Direct contact cooler (DCC), flue gas blower, absorber, heat exchanger, regenerator, steam extractor, MEA reclaimer - 1 per each train Integrated Environmental Control Model - Technical Documentation • 28PDF Image | Amine Based CO2 Capture
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