Part c: Catalysts and reactions

Name: _______________________

SNOS

Salavat - RUSSIA

MSc in Refining and Petrochemicals

Module 28: Heavy Cuts (VB, FCC, HCK,…)

POST-TEST: March 22nd, 2013

tick the good answer(s). Several answers for one question may be correct except if otherwise indicated.

When the question is “What?” “Why?” the answer must be as concise as possible (in all cases one line maximum!).

Below POST-TEST with 24 questions: one point per question for the first 20 questions (sub-total 20 points), and 4 questions with numbers (sub-total 20 points) i.e. total 40 points = 100 %.

PART A: FEEDS

1/ An Arabian Light VGO used to feed a FCC unit has generally a metal content of:

qless than 0.1 ppm q1 to 3 ppm q10 ppm q50 ppm qmore than 100 ppm

2/ To characterize a heavy feed,a standard test measure the CCR:

- What does CCR stand for?

- What does it indicate?

3/ Generally a Delayed Coker is fed with a cut:

q350-550°C q350°C+ q550°C+ q800°C+

660-1020°F 660°F+ 1020°F+ 1470°F+

4/ Generally, feed to hydrocracker is vacuum residue: qTRUE or qFALSE?

5 / Main catalyst contaminants present in heavy cuts are:

qPlatinum qNickel qChromium qVanadium qSulfur

PART B: PRODUCTS

6/ VisbreakerGasoline can be sent directly to gasoline pool. qYes qNo? and Why?

7/ A Hydrocracker unit gives better quality gas oil than a FCC. qYes qNo? And Why?

8/ If the production of gasoline has to be maximized, what is the conversion unit to be used? (only one answer):

qHydrocracker qVisbreaker qFCC qDelayed Coker qFlexicoker

9 / Olefins are present in hydrocracker products: q TRUE or qFALSE?

10 / What is the Octane Number (RON) of MTBE (circle the only one answer): q 82 q100 q118 q 136

PART C: CATALYSTS AND REACTIONS

11/ The cost of FCC catalyst is higher than the cost of Hydrocracker catalyst. qYes qNo? and Why?

12/ Catalysts are used in the following conversion units:

qHydrocracker qVisbreaker qFCC qDelayed Coker qFlexicoker

13/ Hydrocracking reactions are: qEndothermic qExothermic qAthermic

14/ What is the active site of FCC zeolite catalyst: qALUMINIUM Atom or qSILICIUM atom or qBOTH?

15 / Catalyst for Alkylation is qSOLID or qLIQUID? Mention one catalyst for alkylation:___________

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