The fractionation plant described in feeds 10,000 bbl/d (66 m3/h) of a mixture containing 25LV% iC4 and 75LV% nC4 to the deisobutanizer. The reflux rate is 40,000 bbl/d (265 m3/h). a. What is the...

The fractionation plant described in feeds 10,000 bbl/d (66 m3/h) of a mixture containing 25LV% iC4 and 75LV% nC4 to the deisobutanizer. The reflux rate is 40,000 bbl/d (265 m3/h). a. What is the reflux ratio for this column? b. What is the reflux ratio if the feed is a 50/50 mixture of iC4 and nC4 and the reflux flow rate remains unchanged?