1) Brown coal contains solid carbonaceous material, non-combustible minerals (ash) as well as locked in water....

  

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1) Brown coal contains solid carbonaceous material, non-combustible minerals (ash) as well as locked in water. Victorian lignite contains 52% of moisture and 3% of ash. Elemental analysis revealed a dry, ash free composition of C=67%, H=5%, N=1.5%, rest is O. The ash composition is 50% oxygen, rest being Si, Al and other metals. (Note: all percentages are given as weight percentage) a) Calculate the weight percentage of H, O, N, and C for freshly mined lignite (wet, ash still present) 4 points b) The coal is burnt in a power plant heating steam to 570 C. What is the Carnot limit if the cold temperature is 20 C? 1 point 2) A discharged lithium ion battery contains LiCoO2 as positive electrode material (cathode) and graphite as negative electrode material (anode). Upon charging LiC6 is formed via the reaction C6 LiCoO2 LiC6 + CoO2 a) List the chemicals present in a fully charged (1 point) and a fully discharged battery (1 point). b) Consider that a 100kWh EV battery contains a total 8.6 kg of lithium. Ignoring all other materials, what is the weight of the battery? 3 points c) Charging the battery to 50% capacity takes about 30 min, what are the mass and molar flow rates of Li from the cathode towards the anode per hour? 2 points d) Charging the battery to its full capacity takes 1.5 hours. What is the hourly mass transfer rate of Li for the full charging process? 1 point 3) Crude oil needs to be refined via fractional distillation in order to produce oil derived products such as petrol, jet fuel and naphtha. A given barrel of oil can yield 17.36 gal of petrol, 9.04 gal diesel, 3.91 gal jet fuel, 8.04 gal naphtha, 1.72 gal gases, 1.68 gal fuel oil with the rest being coke & bitumen that cannot be evaporated. There are 42 gal per barrel, and 1 US Oil barrel is equal to 159 L. Calculate the daily product volume flow rates (V) in L/day for a typical refinery with a capacity to process 100,000 barrel crude oil per day. (7 points) VGases VPetrol VNaphtha VJet Fuel V Diesel V Crude Oil VFuel Oil Coke & Bitumen 1) Brown coal contains solid carbonaceous material, non-combustible minerals (ash) as well as locked in water. Victorian lignite contains 52% of moisture and 3% of ash. Elemental analysis revealed a dry, ash free composition of C=67%, H=5%, N=1.5%, rest is O. The ash composition is 50% oxygen, rest being Si, Al and other metals. (Note: all percentages are given as weight percentage) a) Calculate the weight percentage of H, O, N, and C for freshly mined lignite (wet, ash still present) 4 points b) The coal is burnt in a power plant heating steam to 570 C. What is the Carnot limit if the cold temperature is 20 C? 1 point 2) A discharged lithium ion battery contains LiCoO2 as positive electrode material (cathode) and graphite as negative electrode material (anode). Upon charging LiC6 is formed via the reaction C6 LiCoO2 LiC6 + CoO2 a) List the chemicals present in a fully charged (1 point) and a fully discharged battery (1 point). b) Consider that a 100kWh EV battery contains a total 8.6 kg of lithium. Ignoring all other materials, what is the weight of the battery? 3 points c) Charging the battery to 50% capacity takes about 30 min, what are the mass and molar flow rates of Li from the cathode towards the anode per hour? 2 points d) Charging the battery to its full capacity takes 1.5 hours. What is the hourly mass transfer rate of Li for the full charging process? 1 point 3) Crude oil needs to be refined via fractional distillation in order to produce oil derived products such as petrol, jet fuel and naphtha. A given barrel of oil can yield 17.36 gal of petrol, 9.04 gal diesel, 3.91 gal jet fuel, 8.04 gal naphtha, 1.72 gal gases, 1.68 gal fuel oil with the rest being coke & bitumen that cannot be evaporated. There are 42 gal per barrel, and 1 US Oil barrel is equal to 159 L. Calculate the daily product volume flow rates (V) in L/day for a typical refinery with a capacity to process 100,000 barrel crude oil per day. (7 points) VGases VPetrol VNaphtha VJet Fuel V Diesel V Crude Oil VFuel Oil Coke & Bitumen

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a To calculate the weight percentage of H O N and C for freshly mined lignite wet ash still present we need to consider the given information Given Moisture content in lignite 52 Ash content in lignit... View the full answer