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Direct Reduction Iron Plant

Direct Reduction Iron Plant. Group Golf Selimos , Blake A. Arrington, Deisy C. Sink, Brandon Ciarlette , Dominic F. (Scribe) Advisor : Orest Romaniuk. Table of Contents. Page 3:Motivation Page 4:BFD/Design Basis Page 5 :Process Flow Diagram Page 6:Energy Recovery

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Direct Reduction Iron Plant

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  1. Direct Reduction Iron Plant Group Golf Selimos, Blake A. Arrington, Deisy C. Sink, Brandon Ciarlette, Dominic F. (Scribe) Advisor: OrestRomaniuk

  2. Table of Contents Page 3:Motivation Page 4:BFD/Design Basis Page 5:Process Flow Diagram Page 6:Energy Recovery Page 7:Environmental Considerations Page 8-12:Economics Page 13: Recommendations

  3. Motivation • With natural gas prices trending down and an abundance of it available in Wiliston ND, a Midrex plant makes sense economically. • The NPV for this plant is $1,254,000,000 • Midrex process is more cost efficient and environmentally friendly than conventional blast furnaces.

  4. Block Flow/Design Basis

  5. Process Flow Diagram 1 5 10 3 8 2 4 7 9 6

  6. Energy Sinks and Loads: Heat Exchangers • Excess energy from the flue gas is used to heat the feed of gas in 1076º F 60 psi 615º F 25 psi 1878º F 19 psi 724 ºF 17 psi 724º F 17 psi 420º F 15 psi 77º F 32 psi 180º F 75 psi Q=113 mmBtu/hr Q=27 mmBtu/hr

  7. Environmental Considerations • Midrex plants are designed with the goal of minimizing water, air, and noise pollution. • In comparison to traditional blast furnaces, Midrex plants have much lower CO2 emissions due to using natural gas instead of coal, as well as having a reformer that can handle larger amounts of recycled CO2 than the average steam-methane reformer. • 153 ton/year of CO2 emissions

  8. Equipment

  9. Expenses

  10. Revenue

  11. Profit

  12. Payback Period

  13. Recommendations • We recommend proceeding with the completion of the Midrex plant at the Williston ND location. • We recommend changing the process so that there is no recycled stream going into the combustion chamber of the reformer. Instead, burn the CO and CH4 with some O2, then dry the stream to remove the water and send the remainder of the stream over to team India as CO2. Natural gas is the cheapest commodity in this plant so it makes sense to use a little more of that for the combustion rather than implementing a pricy MDEA system to remove the CO2 and allow us to burn the little bit of recycled CO and CH4 that’s left.

  14. Questions?

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