10000CH461122002 Pages: 2

Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Max. Marks: 100

b)

4 a)

b)

Course Code: CH461
Course Name: PETROLEUM REFINERY ENGINEERING

PARTA
Answer any two full questions, each carries 15 marks.

Describe the origin and formation of petroleum.
With neat sketch, explain vacuum distillation process. List various products
obtained from vacuum distillation of crude.
Explain the composition of petroleum and general properties of homologous
series.
With a neat sketch, explain the working of any one type of pipe still heater.
The volume average boiling point of Saudi heavy crude oil is 641.91°F. If the API
gravity is 30.38, determine the Watson Characterization factor for Saudi heavy
crude oil.
Explain the following:

(i) Sweet and sour crude

(11) Flash point and fire point

(iii) ASTM and True boiling point distillation

(iv) UOP Characterization factor and Correlation index
Explain the need of dehydration and desalting of crude oil. With a neat labelled
diagram, describe single stage electric desalting process.

PART B
Answer any two full questions, each carries 15 marks.

Explain Visbreaking process. Compare and contrast soaker Visbreaking and coil
Visbreaking techniques.

With the help of a neat sketch, describe the important sections of a fluidized
catalytic cracker unit. Explain what happens to conversion in a FCC unit when
only the (i) feed temperature is increased, (ii) air to the regenerator is increased

and (iii) the reactor outlet temperature is decreased.

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Duration: 3 Hours

Marks
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