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The adipic acid plant from Examples 7.8 and 8.2 is built with 30% of the fixed investment in year 1 and 70% in year 2, and the plant operates at 50% of capacity in year 3 before reaching full capacity in year 4. The plant can be depreciated by the straight-line method over ten years and profits can be assumed to be taxed at 35% per year, payable the next year. Assume that losses cannot be offset against revenues from other operations for tax purposes (i.e., no tax credits in years when the plant makes a loss). Estimate the following:
a. The cash flow in each year of the project
b. The simple payback period
c. The net present value with a 15% cost of capital for 10 years and 15 years of production at full capacity
d. The DCFROR for 15 years of production at full capacity
Is this an attractive investment?
Ethylene and propylene are valuable monomers. A key step in the recovery of these materials is fractionation of the olefin from the corresponding paraffin (ethane or propane). These fractionation steps require refrigeration of the overhead condens..
The solid particles have average diameter 3 mm and piece density 730 kg/m3. Hot air at 150 ºC is blown up through the dryer belt at a volumetric flow rate of 7200 m3 /hr per m2 of belt area. Will the bed of solids on the belt fluidize?
Large blooms of algae result from high nutrient loading in rivers and lakes, for example, as a result of runoff of fertilizers from agricultural fields.
What is the volumetric efficiency
Find the air fuel ratio for stoichiometric combustion of Butane by volume. Calculate the percentage of carbon dioxide present in the DRY flue gas if 30% excess air is used
Calculate the tower height, Z, and tower diameter, D, needed so that the Z/D ratio is about 4 and at this optimum condition, what are the values of f, Tez, and air flow rate, G?
Determine the values of the constants a and c and state the units and draw the path on a PV diagram also draw Path on the diagram and calculate the heat and work interchanges between the system and surroundings.
Calculate the theoretical stages needed to separate a 10 mole% ethanol liquid saturated feed into a 80 mole% distillate and a 0.1 mole% bottoms at 1 atmosphere pressure.
What is the drawdown at the perimeter of the well pumping 225 gpm when both wells are operating?
What is the maximum efficiency of a steam engine operating between 20° C and the boiling point of water, 100 °C, at one atmosphere?
An electron falls from the conduction band of silicon (Si) to the valence band. The band gap of Si is 1.1 eV. What is the wavelength of the photon emitted by this process? Give your answer in nm
In Uniformly varying load in simply supported beam, when we are calculating reaction at support we say centorid of triangle will be at 2x/3 from a to b. but, when calculating moment we say centroid will lies at x/3 from a to b, why?
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