Dg. Mallory et al., The role of the vapour phase in fluid coker cyclone fouling: Part 2. Liquid and vapour yields and compositions, CAN J CH EN, 78(2), 2000, pp. 337-342
The vapours derived from thermally cracked Athabasca bitumen were exposed t
o temperatures between 490 degrees C and 560 degrees C in order to investig
ate the effects of vapour phase thermal cracking on product yields and comp
ositions. Raising the vapour phase temperature above the temperature at whi
ch the vapours were derived increased both the yield of non-condensable vap
ours and the amount of olefins in the produced gas. In addition, the liquid
yield decreased with increasing vapour phase temperature and changes in li
quid product composition were also observed. The H/C ratio of the liquid pr
oduct decreased with increasing vapour phase temperature.