微乳化降黏方法制备调合型船用燃料油

PREPARATION OF BLENDING MARINE OIL WITH MICRO-EMULSIFIED VISCOSITY REDUCTION AGENTS

采用减压渣油、重质蜡油、乙烯焦油为原料调合船用燃料油,当m(减压渣油)∶m(重质蜡油)∶m(乙烯焦油)为5∶2∶3及3∶4∶3时,调合燃料油分别达到RMG380及RME180船用燃料油黏度指标。为了充分利用高黏度渣油资源及提高调合燃料油的稳定性,选取m(减压渣油)∶m(重质蜡油)∶m(乙烯焦油)为5∶3∶2的调合油进行微乳化降黏研究,结果表明:JM型降黏剂与丙二醇嵌段聚醚L61复配作为降黏剂,调合油的运动黏度(50℃)由520.5mm2/s降到334.1mm2/s;同时,加入抗氧剂264,在90天的跟踪考察下,油品不分层,调合油运动黏度(50℃)为348.9mm2/s,符合RMG380船用燃料油黏度要求,并且比其它普通油溶性降黏方法调配燃料油的成本降低21.28%。

The mixture of vacuum residue,heavy vacuum gas oil （heavy VGO）and ethylene tar from Liaoyang Petrochemical Co.was used as marine fuel. The kinematic viscosity of the prepared ma-rine fuel meets the standard of RMG380 and RME180,respectively when the ratio of vacuum residue∶heavy VGO∶ethylene tar is 5∶2 ∶3 and 3 ∶4∶3. To make full use of high viscosity vacuum residue and to improve its stability,the blending marine fuel with ratio of 5∶3∶2 was chosen to test the effect of micro-emulsified viscosity reduction agents. The experiments show that the complex viscosity reducer consisted of mixed JM agent and propylene glycol block polyether L61 can reduce the viscosity of the blending fuel from 520.5 mm2∕s to 334.1 mm2∕s. Meanwhile,no layered structure is observed in 90 days when the antioxidant 264 is added in the blending fuel and the viscosity of the final fuel is 348.9 mm2∕s,meet the standard of RMG380. The cost of the method is 21.28% lower than that with other oil-soluble viscosity reducing methods.