PETROLEUM REFINING PROCESSES DIPLOMA IN CHEMICAL ENGINEERING MODEL QUESTION PAPER

 

MODEL QUESTION PAPER

SUBJECT : PETROLEUM REFINING PROCESSES (ELECTIVE)

SUBJECT CODE : 9CH62

INSTRUCTIONS

  1. Question no. 1 is compulsory.
  2. Answer any two full questions from each sections.

 

1. a. Fill in the blanks:                                                                                                      1 x 5

i. Octane number of gasoline is the measure of its _____________ property.

 

ii. For heating of crudes __________ are used..

iii. Kerosene is treated by using _____________ solvent.

iv. Reagent used in the doctor’s sweetening process is __________________.

v.  The commonly used catalyst in catalytic cracking is ______________.

  b. Write a short note on delayed coking.                                                                           5

 

SECTION-I

 

2. a. Explain the occurrence of petroleum.                                                                        7

    b. Describe Indian petroleum resources & industries.                                                    8                    

  3.  Explain any two theories of origin of petroleum                                                         8+ 7

4. Write short note on.                                                                                                       3X5

   a. Viscosity

    b. Flash & fire point

   c. Octane number

 

 

 

 

SECTION-II

 

5. a. Describe the methods of desalting & dehydration of crudes.                                    5

    b. Explain single stage distillation of crudes with flow sheet.                                      5+5                                                                                                                    

 6. a. Explain Doctor’s sweetening process with flow sheet.                                             5+5

    b .Describe the sulphuric acid treatement.                                                                     5                                                              

7. a. Explain sulphur dioxide treatement of kerosene with flow sheet.                            5+5                                                           

    b. Describe deoiling process.                                                                                            5

SECTION-III

8. a. What is cracking of petroleum? Discuss the methods of cracking.                         2+3

     b. Explain thermal cracking process with flow sheet.                                                5+5

9. a. List the advantages of catalytic cracking.                                                                 5

    b. Describe orthoflow catalytic cracking process with flow sheet.                            5+5

10. Write short notes on                                                                                                 3x 5

      a. Reforming operation.

      b. Hydrofining operation.

     c. Visbreaking operation.

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