Question

Which of the following statements regarding contact time in pyrolysis furnace design are true?

(a) Hexa chlor yields are high at low contact time

(b) Destructive formation of carbon takes place at low contact time

(c) Hexa chlor yields are high, if the contact time is large

(d) Destructive formation of light ends takes place when the contact time is low

The question was asked in an international level competition.

The above asked question is from C1 Compounds in division Synthetic Organic Chemical Industries of Chemical Technology

Answer 1

Correct answer is (a) Hexa chlor yields are high at low contact time

To elaborate: When the contact time is low, hexa chlor yields are high and when contact time is large, destructive formation of light ends and carbon takes place in pyrolysis furnace design.