Crude oil is fractioned by two separating columns. The incoming crude oil is com

Question

Crude oil is fractioned by two separating columns. The incoming crude oil is composed of the following weight fractions:  0.0200 gas, 0.240 gasoline, 0.120 kerosene, 0.130 diesel, 0.130 heating oil, 0.100 lubricating oil, and the rest solids. The crude oil is fed into the first column at 1425 kg/hr producing a stream of gas, a 5:1 gasoline to kerosene stream, a stream containing kerosene and diesel, and 809 kg/hr 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. If you want to produce 291 kg/hr 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.

m1 = 1425 kg/hr Crude Oil                     gas                     gasoline                     kerosene                     diesel                     heating oil                     lubricating oil                     solids

m5 = 809 kg/hr Bottoms diesel heating oil lubricating oil solids

m7 =291 kg/hr heating oil lubricating oil

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 oil stream coming off the second column?

What is the composition of m6, the diesel and heating oil stream coming off the second column?

Explanation / Answer

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