Chemical Engineering Principles And Applications 1st Edition Nuggenhalli S. Nandagopal - Solutions

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In a steam power plant, coal is burned at the rate of 50 lbm/min. The percentage of ash in the coal is 9% by mass. The combustion of coal takes place in a fluidized bed reactor and the ash in the effluent stream from the reactor is removed by scrubbing with water at a feed rate of 2.6 gpm.
2-Mercaptoethanol (C2H6OS) is produced by reacting ethylene oxide (C2H4O) with hydrogen sulfide (H2S) as per the following reaction equation.The reaction takes place in the presence of Thiodiglycol and Zeolites as catalysts. The molecular weights (lbm/lbmol) are, ethylene oxide = 44, hydrogen
Chlorobenzene is produced by direct chlorination of benzene. However, a parallel reaction that produces dichlorobenzene hexachloride also occurs. The parallel reactions are shown here. The single pass conversion of benzene is 87% and 20% of chlorobenzene produced in the first reaction participates
Methanol can be produced by the reaction of carbon dioxide and hydrogen as per the following reaction: The fresh feed available is 500 kmol/hr with 2% inerts and the rest being the reactants in stoichiometric proportion. The feed to the reactor consists of fresh feed and the recycle stream. The
In an instant coffee plant, 10000 kg/hr of coffee extract containing 20% solids is concentrated using a vacuum evaporator which is designed to produce a concentrated extract with 50% solids suitable for freeze drying. However, it has been determined that a concentrate with 40% solids prior to the
A process requires a supply of 2,500 gal/hr of 12% (by mass) hydrochloric acid solution and it can tolerate a variation of ±0.15% in the concentration of hydrochloric acid. A system with a buffer tank is designed such that an alarm will be activated when the concentration of hydrochloric acid goes
The water gas shift reaction (WGSR) is the reaction of carbon monoxide with steam to produce carbon dioxide and hydrogen and it is used in the production of hydrogen for industrial applications. 600 lbmol/hr of carbon monoxide and 30% excess steam are fed to a reactor at 600 °F and the product
A liquid hydrocarbon fuel has a mass composition of 82% carbon and 18% hydrogen. The specific gravity of the fuel is 0.72. Calculate the kmol of air required for the complete combustion of 1 liter of the liquid fuel.
1800 lbm/min of steam at 600 °F and 300 psia expands through a turbine to a final pressure of 10 psia. The isentropic efficiency of the turbine is 90% and the mechanical efficiency of the turbine is 80%. Calculate the horsepower (hp) produced by the turbine.
After undergoing the first stage of expansion, steam at 1 MPa is reheated to 500 °C. The reheated steam expands through the second stage turbine to a final pressure of 20 kPa. Determine the enthalpy of the steam leaving the second stage turbine if the isentropic efficiency of the second stage
Waste heat recovery measures in a process facility results in the availability of superheated steam at 200 psia and 700 °F. The available steam expands in a turbine to a final pressure of 10 psia. If the specific enthalpy of the steam leaving the turbine is 1140 Btu/lbm, determine the isentropic
A binary mixture of propane and butane exists in equilibrium at standard atmospheric pressure of 101 kPa. The mole fraction of propane in the liquid phase is 0.30. The normal boiling points (NBPs) of propane and butane are 231 K and 272 K respectively. Determine the temperature of the liquid
At 30 °C, the Henry’s law constant for a 0.0001 mol/m3 aqueous solution of trichloroethylene (TCE) in equilibrium with atmospheric air is determined to be 1.2 kPa/(mol/m3). Determine the partial pressure of TCE and the mole fraction of TCE in the vapor phase.
Chloroform (CHCl3) and methanol (CH3OH) form a non-ideal, binary azeotropic mixture at standard atmospheric pressure and 327 K. The azeotropic composition is 65 mol% chloroform and the Antoine’s equation for calculating the vapor pressure of chloroform is, 1233 log 10P CHC13 = 4.21 psat (bar),
A binary mixture of water and ethanol is flash distilled at atmospheric pressure. The feed consists of 80 mole% ethanol (component A) and 20 mole% water (component B). The equations for vapor pressures and the average activity coefficients at the given composition and the relevant temperature range
The relative volatility of cyclohexane with respect to water is 4.33 in the temperature range of interest. If the liquid mole fraction of cyclohexane in a binary solution of water is 0.25, calculate the mole fraction of water in the vapor phase that is in equilibrium with the liquid phase.
Phosphorus trichloride (PCl3) reacts with chlorine gas (Cl2) to produce phosphorus pentachloride (PCl5) as per the following reversible gas phase reaction: The initial and equilibrium concentrations of phosphorus trichloride are 0.30 mol/ L and 0.15 mol/L respectively, while the initial
For the reversible gas phase reaction: At a given temperature, the equilibrium concentrations of ammonia and nitrogen are Determine the equilibrium concentration of hydrogen. N2 + 3H2 2NH3 Kc=0.0045
An oil has specific gravity (SG) of 0.90 and absolute viscosity of 15 cP. Calculate:A. the density of the oil in lbm/ft3 and kg/m3 .B. the specific weight of the oil in lbf/ft3 and N/m3 .C. the dynamic viscosity in lbf-sec/ft2 , lbm/ft-sec, N.s/m2 , and kg/m.s.D. the kinematic viscosity in m2
An inclined manometer is used in measuring the pressure difference between the two water tanks, A and B, as shown. The specific gravity of mercury is 13.6. Calculate the pressure difference in psi. A (1) 0.90 in (2) 0.80 in Mercury 30 1.80 in B
A bypass piping network is shown in the figure below. The velocities and the Fanning friction factors will be approximately equal in the straight pipe as well as in the bypass loop, while either one of them is in operation. Determine the required ratio of the diameter of the straight pipe to the
A venturi meter is used in measuring the flow rate of oil (SG = 0.88) in a pipe with ID = 100 mm. The throat diameter of the Venturi meter is 50 mm. If the flow rate of oil is 25.24 L/s, determine the reading of a differential pressure gage attached across the venturi meter in bar(g).
A dryer uses hot air to dry wet feed with 20% moisture content on a wet basis to a final moisture content of 10%, also on a wet basis. To accomplish this, 4225 cfm (cubic feet per minute) of air at 50 °F and 50% relative humidity is preheated to 120 ° F before being fed to the dryer. The air

Chemical Engineering Principles And Applications 1st Edition Nuggenhalli S. Nandagopal - Solutions

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