Abstract:

To improve the heavy oil atomization situation of FCC feed stock and decrease the yield of carbon and dry gas，the feed stock，heavy oil，is emulsified.Selecting and adjusting composition of emulsifier are studied.The effect of reactive temperature is observed with emulsifying heavy oil for FCC productive distribution.As a result，Emulsifier Span (S-1)，combination of S-1 and polyoxyethylene ether (O-3) diary，S-1/O-3 and Tween (T-2) ternary combinative emulsifier are satisfactory emulsifiers.In comparison with the heavy oil before emulsification，the reactive temperature can be reduced by 10℃，the light oil yield of emulsified heavy oil increases by 1.2%~5.6%，but the coke yield decreases obviously.The study above suggests that the yield of FCC light oil can increases，the yield of coke decreases with emulsifying stuff，and the process is of definite industry application prospect.

Key words: FCC feed stock, heavy oil, emulsifier, emulsification, catalytic cracking