Task # 1.

For the homogeneous autocatalytic reaction A + B → 2B, where –rA = kCACB, aconversion rate of A of X = 0.44. The velocity constant is k = 10-3  m3 / (mol s). The feed stream of 0.1 m3 / s contains A with CA0  = 90 mol / m3 and B with CB0 = 10 mol / m3. It is considered whichreactor configuration that will be most suitable

1.1

The reaction must take place in a flow reactor. Set up the stoichiometric table and find CA and CB asfunction of CA0 and X.

A high grade semi-anthracite coal has a complete analysis of 85.86% C, 4.44% H, 2.7% O, 1.2% N, 5% ash and 0.8% S. Analysis of the Residue shows 58% C and 42% ash. Air is
supplied dry at 30°C and 750mmHg. Partial orsat analysis of the stack gas (400°C, 755mmHg) shows 8.05% CO2, 2.42% CO and 2.9%H2.Assume the S and N gasified burns to SO2 and NO respectively. Calculate
a. % excess O2
b. Complete orsat analysis of stack gas
c. m3 stack gas/ m3 air

A sample of hemispherical particles of quartz having the uniform particle diameten of 13.2 cm with a density of 0.89 g/cm3 and the total surface area is 3980.6 mm2/g. What is the total mass of the sample? Sphericity of sample can be calculated for a hemispherical particle with an individual particle diameter of 1.5 cm.

We can precipitate lead with many anions, including sulfide and sulfate (among others). Using the two equilibrium relationships below, the treatment target (based on the ‘action level’) of ~7x10-8 M, and the associated costs of the salts, which would you select (ignoring all other considerations, which are many, but looking at cost alone) to remove lead from 100 m3 of solution with lead at 2x10-5 M? In each case you will have to determine the amount of anion (sulfide or sulfate) needed to i) form the solid, and ii) increase its concentration in solution from the initial value of 0 to the equilibrium value from Ksp. Assume CaS costs ~$440/kg and CaSO4 costs ~$1/kg (MW of CaS = 72.2 g/mol, MW of CaSO4 = 136 g/mol).

Ksp = 1x10-28 = [Pb2+][S2-]

Ksp = 2.53x10-8 = [Pb2+][SO42-]

a. Using only P-v-T data, estimate the enthalpy of vaporization of water at T oC where, T is T= 38 and so on. b. If the enthalpy (h), as an unmeasured thermodynamic property is related to the temperature (T) and Pressure (P) as measured thermodynamic properties according to the following relation: h = f (T,P). Show that: dh = Cp dT +[ v – T (dv/dT)p] dP Where: Cp is the specific heat at constant pressure, v is the specific volume.

(a) In a dropping mercury electrode (dme), a new measurement is made on each drop. The drop size can be controlled by the diameter of the capillary which feeds the dme. Discuss advantages and disadvantages of using a small drop vs. a large drop.
(b) Discuss the differences between the hydrodynamic boundary layer and the diffusion boundary layer near the surface of a rotating disk electrode.
(c) Discuss advantages and disadvantages of linear vs. cyclic voltammetry.

Explain briefly the difference between a conventional power plant and a combined cycle power plant with the aid of neat diagrams.

Develop enzymatic rate expressions for competitive, noncompetitive, uncompetitive inhibitions using rapid equilibrium assumption.

One method of exploitation of an ore mine that contains 1 million metric tons of ore will result in a recovery of 70% of the available ore deposit and will cost $25 per ton of material removed. Another method of exploitation will recover 60% and will cost $20 per metric ton of material removed. Subsequent processing of the removed ore recovers 200 kg of metal from each ton of processed ore and cost $50 per metric ton of ore processed. The recovered metal can be sold for $2.0 per kg. Which method for developing the mine is preferred to maximize total profit from the mine?

One alternative to accelerate oil well production is to install a booster pump at the wellhead to reduce the pressure drop between the oil reservoir and the oil gathering station (onshore) or production platform (offshore). Make an economic analysis to verify if the production increment (between with and without booster pump) is economically attractive. The following data from an oil well subsea boosting project is available: Subsea equipment installation cost: $ 1.5 million 1 MW (Mega Watts) Pump system unit cost: $ 25.0 million Deep-water vessel rent for pipeline laying: $ 40 million total cost Overhead cost: assume 10% to total investment cost The installation and construction of the boosting system will be performed in one year. The revenue of this project is generated by oil well production increment using the booting system. An increment of 5,000 bopd (barrels of oil per day) in the first year of operation (after one year for installation and construction) is predicted, then, it will decline by 10% every year for a study period of 10 years. For example, 5000 bopd (initial increment), then 4500 bopd (in the next year), 4050 bopd, 3645 bopd, etc. Assume the oil well operates 330 days per year. The remaining 30 days, the well will not produce because it will be in maintenance (also called workover). Assume the well will produce oil only (no water). The market value of this equipment will be negligible at the end of the 10-year study period. Use MARR = 20% Calculate the present worth (PW) for this project assuming an oil-selling price of $40 per barrel and a production cost of $15 per barrel. In addition, add a constant value of $5 million per year for energy cost to run the pump boosting system. Is this project economically attractive? Draw a cash flow diagram for this project

Problem 2 (10%)

Estimate the simple payback period and the discounted payback period of problem 1.

Just answer problem 2 please

One alternative to accelerate oil well production is to install a booster pump at the wellhead to reduce the pressure drop between the oil reservoir and the oil gathering station (onshore) or production platform (offshore). Make an economic analysis to verify if the production increment (between with and without booster pump) is economically attractive. The following data from an oil well subsea boosting project is available: Subsea equipment installation cost: $ 1.5 million 1 MW (Mega Watts) Pump system unit cost: $ 25.0 million Deep-water vessel rent for pipeline laying: $ 40 million total cost Overhead cost: assume 10% to total investment cost The installation and construction of the boosting system will be performed in one year. The revenue of this project is generated by oil well production increment using the booting system. An increment of 5,000 bopd (barrels of oil per day) in the first year of operation (after one year for installation and construction) is predicted, then, it will decline by 10% every year for a study period of 10 years. For example, 5000 bopd (initial increment), then 4500 bopd (in the next year), 4050 bopd, 3645 bopd, etc. Assume the oil well operates 330 days per year. The remaining 30 days, the well will not produce because it will be in maintenance (also called workover). Assume the well will produce oil only (no water). The market value of this equipment will be negligible at the end of the 10-year study period. Use MARR = 20% Calculate the present worth (PW) for this project assuming an oil-selling price of $40 per barrel and a production cost of $15 per barrel. In addition, add a constant value of $5 million per year for energy cost to run the pump boosting system. Is this project economically attractive? Draw a cash flow diagram for this project

Suggest two methods for making the PStyrene-PButadiene-PStyrene (polystyrene-polybutadiene-polystyrene)
triblock copolymer in a batch reactor using n-BuLi as an initiator.

The following data are obtained at 0°C in a constant-volume batch reactor using pure gaseous

The stoichiometry of the decomposition is A → 2.5 R. Find a rate equation which satisfactorily represents this decomposition.