Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to__________________?
Correct answer: C. Suppress coke formation
- A. Increase the yield of light distillates
- B. Enhance the octane number of gasoline
- C. Suppress coke formation
- D. Reduce gum content in gasoline
Explanation
Although pressure slows thermal cracking, it is maintained to reduce the tendency of cracked vapours to form coke in the furnace and equipment. Thus, pressure helps suppress coke deposition even at the cost of a lower cracking rate.
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