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Question: 611 pm 100 a reglmskfuedusa king faisal university che...

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6:11 PM ④ 100% a reglms.kfu.edu.sa King Faisal University ChE 402 Plant Design College of Engineering Homework 1: Material & Energy Balances 1- 2.5. Aniline is produced by the hydrogenation of nitrobenzene. A small amount of cyclo-hexylamine is produced as a byproduct. The reactions are Nitrobenzene is fed to the reactor as a vapor, with three times the stoi chiometric quantity of hydrogen. The conversion of the nitrobenzene, to all products, is 96%, and the selectivity for aniline is 95%. The unreacted hydrogen is separated from the reactor products and re- cycled to the reactor. A purge is taken from the recycle stream to maintain the inerts in the recycle stream below 5%. The fresh hydrogen feed is 99.5% pure, the remainder being inerts. All percentages are molar. For a feed rate of 100 kmol/h of nitrobenzene, calculate i. The fresh hydrogen feed ii. The purge rate required; I The composition of the reactor outlet stream. 2- 2.8. In the manufacture of aniline from nitrobenzene, the reactor products are condensed and separated into aqueous and organic phases in a decanter. The organic phase is fed to a striping column to recover the aniline. Aniline and water form an azeotrope, composition 0.96 mole fraction aniline. For the feed composition given below, make a mass balance around the column and determine the stream compositions and flow rates. Take as the basis for the balance 100 kg/h feed and 99.9% recovery of the aniline in the overhead product. Assume that nitrobenzene leaves with the water stream from the base of the column Feed composition, weight percentage: water 2.4, aniline 73.0, nitrobenzene 3.2, cyclo-hexylamine trace
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