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The composition of a gas derived by the gasification of coal is, volume percentage: carbon dioxide 4, carbon monoxide 16, hydrogen 50, methane 15, ethane 3, benzene 2, balance nitrogen. If the gas is burnt in a furnace with 20% excess air, calculate
a. the amount of air required per 100 kmol of gas,
b. The amount of flue gas produced per 100 kmol of gas,
c. the composition of the flue gases, on a dry basis.
A mixture containing 98 mol% methanol and 2 mol% of an inert contaminant is available as a feed to a formaldehyde plant. The fresh feed to a process consists of 1000 kmol/h of this mixture along with 200 kmol/h of oxygen. All of the oxygen is consume..
The typical vent-gas analysis from the recycle stream in an oxyhydrochlorination process for the production of dichloromethane (DCE) (British patent BP 1,524,449) is given below, percentages on volume basis.
A vapor of titanium isopropoxide (partial pressure = 133 pascal) is reacted in O2 rich CH4 flame at T=2000K. Calculate the diameter of the nuclei.
The concentration of this sample is changed such that its transmittance has increased to 57%. Calculate the new concentration of the sample.
Steam in a closed system is compressed by reversible isothermal process in a heat bath at 250 °C, starting from an initial pressure of 15 bar. During the process, the steam receives 400 kJ/kg of work. Determine the final state and the amount of he..
The following information for methyl chloride is available: Saturation temperature at 2 bar: - 7 °C.ΔHvap at 2 bar: 21.5 kJ/mol.CP of vapor: 38 J/mol K. Assume CH3 Cl vapor may be assumed to be ideal. Is this a good assumption?
The characteristics of a sigmoidal curve are dependent upon the constants and the stimulus. Change the constants and observe the effects. What range of values leads to a curve that appears to be hyperbolic?
In a wood chemistry/wood physics lab, we were asked to place a piece of wood that contained approx. 64% moisture content in a hydraulic press where we applied a constant 400 psi pressure and applied a constant 400 degrees F of heat. We inserted a ..
Minimum total cross-sectional area of riser, direction-reversal space in cap, or annular cap space = 15 percent of tower cross-sectional area
Find the -6 dB width of the envelope of a time pulse and the two end frequencies needed to scan a 1 mm thick slice from -15 cm to +15 cm around an isocenter on the z axis. Assume Gz = 0:5 T=m.
Comment on whether the device is operating in the depletion mode or in the enhancement mode.
For a gas flow rate of 100,000 m3 /h, at the reactor conditions, determine how many cyclones operating in parallel are needed and design a suitable cyclone. Estimate the size distribution of the particles entering the filters.
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