Exam 2 (eTest). Will cover material in Lessons 6-9. Check the Syllabus, or Course Calendar for Exam 2 schedule and venue.

Exercise 8 Instructions

1. Estimate the hydrogen consumption required to completely remove the sulfur from a hydrotreater feedstock and to reduce the nitrogen content of the product to 15 ppm by weight. The 48.5 °API naphtha feedstock to the hydrotreater contains 0.62% sulfur, 0.15% nitrogen, 0.09% oxygen by weight. You should assume that oxygen species would react with hydrogen first for complete removal of oxygen. Indicate any other assumption you would like to make about your calculations. 30 pts
    
2. Solve Problem 5 at the end of Chapter 12 in your textbook to calculate the pour point of the following mixture and compare it with the value calculated by assuming linear blending. 40 pts
    

   Component	Barrels	ASTM 50% Temp °F	Pour Point, °F
   A	5200	575	10
   B	3000	425	50
   C	6500	500	65
   D	3250	550	45

3. Solve Problem 6 at the end of Chapter 12 to calculate the viscosity of the following ternary blend at 130 °F.
    

   Component	Barrels	Viscosity (cSt)	Temp  (°F)
   A	2000	75.5	130
   B	3000	225	130
   C	5000	6500	130

Note that you may use Table 12.3 to obtain viscosity blending index numbers. 30 pts

Instructions for Submitting Your Answers:

Once you have a solution to the exercises you will submit your answers as a PDF by uploading your file to be graded. The MS Word, or Excel files should be saved as a PDF before submitting the exercise. Please Note: Scans of handwritten pages are not acceptable.

Please follow the instructions below.

1. Find the Exercise 8 assignment in the Lesson 9 Module by either clicking Next until you find it or by clicking Assignments and scrolling down until you find it.
2. Make sure that your name is in the document title before uploading it to the correct assignment (i.e. Lesson9_Exercise8_Tom Smith).