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# Crude oil is fractioned by two separating columns. The incoming crude oil is composed of, in weight fractions, 0.0300 gas,0.230 gasoline, 0.100 kerosene, 0.130 diesel, 0.120 heating oil, 0.110 lubricating

oil, and the rest solids. The crude oil is fed into the first column at mi = 1.310 x 10' kg/h, producing a stream of gas, a 5:1 gasoline to kerosene stream, a stream containing kerósene and diesel, and a m5 = 729 kg/h stream of the bottoms. The bottoms, containing diesel, lubricating oil,heating oil, and solids, is fed into a second distillation column that separates the components into three streams. The top stream contains diesel and heating oil. The middle stream contains heating oil and lubricating oil, and the bottom stream contains the solids. To produce m, = 176 kg/h of the stream containing heating and lubricating oil, find 1. The flow rate, m3, of the gasoline and kerosene stream. 2. The composition of the heating oil and lubricating oil stream. 3. The composition of the diesel and heating oil stream. What is the flow rate, m3, of the gasoline and kerosene stream coming off the first column? What is the composition of m7, the heating oil and lubricating 4il stream coming off the second column? What is the composition of m6, the diesel and heating oil stream coming off the second column? In a pilot experiment, 100 lb-mol of a 45.0 lb-mol % ethanol, 55.0 lb-mol % water solution is fed into a distillation column and separated into two streams. The process flow diagram is shown in the image, where Xethanol, 1 =0.450 lb-mol ethanol/lb-mol, xwater, 1 =0.550 lb-mol water/lb-mol, n2. = 14.0 lb-mol, Xethanol, 2 = 0.890 lb-mol ethanol/lb-mol, xwater,2 = 0.110 lb-mol water/lb-mol, a1 = 32.5 lb-mol ethanol, anda2 = 53.5 lb-mol water.

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