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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 condenser and very large distillation columns with many stages. Raising the pressure at which the column operates improves the performance of the refrigeration system, but increases the number of stages needed. Formulate the objective function for optimizing the recovery of ethylene from an ethylene-ethane mixture. What are the key constraints? What will be the main trade-offs?
The process shown in Figure 6-19 is part of a chiller unit that uses water as the refrigerant. The following data are available: stream 1 is a vapor-liquid mixture at 0.5 bar; stream 5 is saturated vapor at 5 °C; stream 6 is at 500 °C; stream 7 is..
Calculate the molar fraction of the system in the vapor phase
Calculate the instantaneous and rms values of the voltage induced in a 150-turn coil on the armature, if the axial length of the armature and its inner diameter are both 100 mm.
QUESTION 11 - Steam boiler plant in a petroleum refinery has an overall thermal efficiency on gross C.V . of the fuel of 85 % and an out put of 90720 kg of steam per hour. The steam is produced at a pressure ..
Find the charge per unit length on the inner surface and on the outer surface of the outer cylinder.
A living plant contains approximately the same fraction of carbon- 14 as in atmospheric carbon dioxide. Assuming that the observed rate of decay of carbon-14 from a living plant is 13.6 counts per minute per gram of carbon
Also sketch the power triangles before and after the addition of C, and find the overall current drawn from the supply.
Monochlorobenzene is produced by the reaction of benzene with chlorine. A mixture of mono chlorobenzene and dichlorobenzene is produced, with a small amount of trichlorobenzene. Hydrogen chloride is produced as a byproduct. Benzene is fed to the r..
CHE 352 – Spring 2014, In this assignment, students will review some of the concepts of measurements discussed, 4 methods of measuring temperature, 4 methods of measuring fluid pressure
Forty-five kilograms of a solution containing 30 wt% ethylene glycol in water is to be extracted with furfural. Using Figures 4.14a and 4.14c, calculate:
When the three-phase transformer bank delivers 250 kW at 240 V and 0.866 lagging power factor,
Estimate the number-average molecular weight that is required to give a tensile strength of195MPa.
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