Discussion
A column feed of 100 moles per hour containing 40 mole per cent of the light component gives a distillate of 90 per cent and bottoms of 10 per cent. What is the distillate flow?
Answer: A
Correct answer: 37.5 moles per hour
Total and light-component balances together give the lever rule: \[ D = F\,\frac{x_F - x_B}{x_D - x_B} = 100\times\frac{0.40-0.10}{0.90-0.10} = 100\times\frac{0.30}{0.80} = 37.5\ \mathrm{mol/h}. \] The check is that the bottoms are then 62.5 mol/h, and \( 37.5\times0.9 + 62.5\times0.1 = 40 \), which is the light component fed.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development