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Energies 2018, 11, x FOR PEER REVIEW 9 of 15 Energies 2019, 12, 3742 9 of 15 Table 4. Summary of the two optimal solutions with MeOH capacity of 100 kton/year and the Energies 2018, 11, x FOR PEER REVIEW 9 of 15 economic assumptions given in Table 3. main influence factors of methanol production cost and payback time will be the prices of the SOE stack, the imported electricity, and CO . 2 Table 4. Summary of the two optimal solutions with MeOH capacity of 10L0ekvteolniz/eydear and the SOE Electricity Import Optimal Payback econom𝜼ic assumptions given in Table 3. Investment MeOH Design (%) Consumption Electricity Costs (M$) Costs Cost Time ($/Year) Levelized (Years) Design (%) Consumption Electricity Costs (M$) Costs Cost Time (MW) (MW) Optimal ($/Ton) Payback Unit MeORHef. Table 3. Economic assumptions. MEP 69.4 MCP 68.0 MEP 69.4 Economic Parameter 𝜼 SOE Electricity Import VaIlnuveestment 171 107 110 68.3 582 15.6 4.4. Cost Distribution Projec1t 0li8fetime 113 (MW) (MW) 25 134 y6e9ar.4 557[46] 13.5 ($/Year) ($/Ton) (Years) 10 7200 1.18 Catalyst (methanol reactor) 21.36 $/kg [44] both designs are not economically feasible with a payback time over 13 years. However, it is still Based on the economic assumptions given in Table 3, the two chosen designs are economically Loan interest rate 171 134 % [46] 68.3 582 15.6 MCP 68.0 108 113 107 110 hours/year - 69.4 557 13.5 Annual operating hours (AOH) Exchange rate (€ to $) BasedonEtlehcetreiciotynoprmiciec(aimsspuomrt)ptionsgiven7in3.1T6able3,thetw$/MoWchhosendesigns[5a1r]eeconomically - [50] 4.4. Cost DistributiMonethanol price 504 $/ton [52] evaluated with the key indicator given in Table 4. It shows that, for the given economic assumptions, Catalyst lifetime (methanol reactor) 4 year [44] interesting to understand the cost breakdown and identify the key contributors to the levelized evaluated with theOkxeygeindpirciacetor given in Table 4.17It7shows that, fo$r/ttohne given econo[m53i]c assumptions, methanol cost. The cost distribution is analyzed based on MCP. Figure 5 shows the investment $/ton [53] both designs are not economically feasible with a payback time over 13 years. However, it is still Carbon dioxide captured 59 distributionoCfatrhbeonpdriopxiodseetdradcainsgeatMCP.The5.9totalinvestme$n/ttonis133.8M$,[w53i]ththehighest interesting to understand the cost breakdown and identify the key contributors to the levelized $/ton [52] contribution from the SOE (79%). All other components contribute less than 10%, respectively. Figure methanol cost. The cost distribution is analyzed based on MCP. Figure 5 shows the investment Process water price 0.4756 $/year [37] 6 shows the distribution of operating cost (positive value) and revenue (negative value) of the distribution of the proposed case at MCP. The total investment is 133.8 M$, with the highest Operator salary 52,900 proposed case at MCP. The total operating cost (70 M$/year) is mostly contributed by the electricity contribution from the SOE (79%). All other components contribute less than 10%, respectively. Figure Table 4. Summary of the two optimal solutions with MeOH capacity of 100 kton/year and the economic consumption, about 50 M$/year, followed by the CO2 purchase, about 10 M$/year. The revenue comes 6 shows the distribution of operating cost (positive value) and revenue (negative value) of the assumptions given in Table 3. from the sale of methanol and byproduct oxygen, about 50 M$/year and 29 M$/year, respectively. proposed case at MCP. The total operating cost (70 M$/year) is mostly contributed by the electricity Therefore,itcanbeseentShOaEtEtlhecetrmicitayininIfmlupeonrtcefaIncvteosrtmseonftmeOtphtaimnaollprodLuevcetliiozendcostaPnadybpacakyback consumption, about 50 M$/year, followed by the CO2 purchase, about 10 M$/year. The revenue comes Design η (%) Consumption Electricity Costs Costs MeOH Cost Time time will be the prices of the SOE stack, the imported electricity, and CO2. from the sale of methanol and byproduct oxygen, about 50 M$/year and 29 M$/year, respectively. (MW) (MW) (M$) ($/Year) ($/Ton) (Years) Therefore, it can be seen that the main influence factors of methanol production cost and payback MEP 69.4 107 110 171 68.3 582 15.6 MCP 68.0 108 113 134 69.4 557 13.5 time will be the prices of the SOE stack, the imported electricity, and CO2. Figure 5. Investment cost distribution of MCP. Figure 5. Investment cost distribution of MCP. Figure 5. Investment cost distribution of MCP. Figure 6. Operating cost and revenue distribution of MCP. Figure 6. Operating cost and revenue distribution of MCP. 4.5.SensitivityAnalysis Figure6.OperatingcostandrevenuedistributionofMCP. 4.5. Sensitivity AnalysisPDF Image | Optimization of CO2-to-Methanol with Solid-Oxide Electrolyzer
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