Novel Design of an Integrated Pulp Mill Biorefinery for the ...

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Exhaust mass flow kg/s 339.46 Flue gas mass flow rate kg/s 295.92 CO2 generated a. http://en.wikipedia.org/wiki/Gas_turbine kg/s 222.29 Property of Purge Gas from DME Synthesis Syngas Syngas flow rate kg/s 123 CO:H2 0.8096 Energy MW 1437.8 Reactor Efficiency % 60 H2 mole percent % 37 CO mole percent % 45.7 Purge Gas Energy MW 575.12 Temperature °C 150 Pressure bar 25 Flow rate kg/s 49.20 Reaction in Gas Turbine: Air 430 16.1 x Purge Gas 150 25 49.2 Flue Gas 1350 15.6 49.2+x Figure E.2: Mass and energy flow diagram for gas turbine combustor with DME purge gas. 98
Combustion 2CO+O2→ 2CO2 + 566 kJ/mol CO mole percent: % 45.7 CO2 mass percent: 0.7512 Combustion Heat kJ 258.66 2H2(g) +O2(g)→ 2H2O(g) + 653.4kJ/mol H2 mole percent: % 37 H2O mass percent: 0.2488 Combustion Heat kJ 241.76 Flue Gas H2O vapor Cp a kJ/kgK 2.663 Energy kW (49.2+x)*0.2488*2.663*(1623-298) CO2 Cp b kJ/kgK 1.314 Energy kW (49.2+x)*0.7512*1.314*(1623-298) a.http://www.engineeringtoolbox.com/water-vapor-d_979.html b. http://www.engineeringtoolbox.com/carbon-dioxide-d_974.html Air Cp kJ/kgK 1.075 Energy kW (x)*1.075*(703-298) Purge Gas CO Cp a kJ/kgK 1.051 CO mass percent 0.6268 Energy kW 4051.42 H2 Cp b kJ/kgK 14.49 H2 mass percent 0.0366 Energy kW 49.2 a. http://www.engineeringtoolbox.com/carbon-monoxide-d_975.html b. http://www.engineeringtoolbox.com/hydrogen-d_976.html Energy from Purge Gas MW 575.12 Energy Balance: Eair + Ecombus + Epurgegas = Efluegas From energy balance we got: x= 246.72 kg/s 99
Page 1 and 2:
Novel Design of an Integrated Pulp
Page 3 and 4:
Table of Contents List of Figures .
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List of Figures Figure 1: Price of
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1 Introduction The global transport
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2 Background 2.1 Pulp Mill Backgrou
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2.1.2.2 Chemical Pulping The most c
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sodium sulfide and sodium carbonate
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process described in the section on
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2.2.1 Low-Temperature Black Liquor
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Figure 2: Chemrec gasification proc
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Table 3: Average syngas composition
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DME than that could be obtained fro
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U.S. Patent[58] and European Patent
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Figure 4: Topsøe gas phase technol
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DME Workshop, Japan (Sept. 7, 2000)
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2.4.1. Fischer-Tropsch Reactors The
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kpH 2 pCO Cobalt rate = 2 (2.4.1) (
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invention of Fischer-Tropsch in the
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Table 7: hydrocarbons and associate
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3 Process Design 3.1 Pulp Mill 3.1.
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carbonate is fired in a lime kiln t
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lost and the pulp that provides tha
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Table 16: General operating paramet
Page 47 and 48: Table 19: Ash analysis of Pittsburg
Page 49 and 50: Table 22: Experimental syngas compo
Page 51 and 52: 3.2.5 Process Options and Flexibili
Page 53 and 54: Nitrogen compounds Nitrogen from th
Page 55 and 56: 3.3.2.3 Reactors A single-step gas
Page 57 and 58: Table 27: FT-diesel fuel synthesis
Page 59 and 60: 3.5.2 Power Generation Process Desi
Page 61 and 62: Figure 21: Schematic of biorefinery
Page 63 and 64: ar) reacts with the fuel in the com
Page 65 and 66: Figure 25showed the detailed energy
Page 67 and 68: 4. Design Summary The DME design an
Page 69 and 70: Figure 27: Mass and energy flow of
Page 71 and 72: References 1. Åhman, M., G. Modig,
Page 73 and 74: 42. R.A. Peascoe, J.R.K., C.R. Hubb
Page 75 and 76: PerformanceSimulation. 2006, Prince
Page 77 and 78: Appendix Appendix A MP Steam Demand
Page 79 and 80: Appendix B: Composite Fuel Blend to
Page 81 and 82: DME Density = 0.67 kg/L (at 20 °C)
Page 83 and 84: Air Separation Unit Requirements Ba
Page 85 and 86: Purge gas: CO conversion is 60%, 40
Page 87 and 88: Appendix D: FTD Synthesis Two diffe
Page 89 and 90: Table D.3: The hydrocarbon product
Page 91 and 92: Figure D.3 Mass and energy balance
Page 93 and 94: Table D.3 Mass and energy balance o
Page 95 and 96: Appendix E: Heat and Power Generati
Page 97: Energy H2O absorbed MW 46.71 Using
Page 101 and 102: Specific Heat (cp) b kJ/kgK 1.072 E
Page 103 and 104: Specific Heat of Steam (cp) kJ/kgK
Page 105: Appendix F: Concept Map 105
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