乳化重油催化裂化反应行为考察

INVESTIGATION ON BEHAVIOR OF CATALYTIC CRACKING REACTION FOR EMULSIFYING HEAVY OIL

为改善催化裂化原料油雾化状况,降低结焦和干气收率,将原料重油进行乳化。对乳化剂进行了选择和复配,并考察了温度对乳化重油催化裂化反应产品分布的影响。结果表明:采用乳化剂Span(S-1)、S-1与聚氧乙烯醚乳化剂(O-3)的二元复配剂以及S-1/O-3与Tween(T-2)三元复配乳化剂具有较好的乳化性能;与重油相比,乳化重油催化裂化反应温度可降低10℃,轻油收率提高1.2%～5.6%,而焦炭产率则较低。研究认为,对原料进行乳化可提高催化裂化反应的轻油收率,降低结焦,具有一定的工业应用前景。

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.