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低硫柴油润滑性能改进剂及其制备工艺

申请公布号:CN101787318B

申请号:CN201010134286.4

申请日期:2010.03.29

申请公布日期:2013.01.09

申请人:
辽宁石油化工大学

发明人:臧树良;姜恒;柏永全;赵杉林

分类号:C10L10/08(2006.01)I;C10L1/19(2006.01)I;C10L1/188(2006.01)I;C10L1/04(2006.01)N

主分类号:C10L10/08(2006.01)I

代理机构:
沈阳智龙专利事务所(普通合伙) 21115

代理人:宋铁军

地址:113001 辽宁省抚顺市望花区丹东路西段1号

摘要:本发明涉及用甘油单双酯混合物和二聚酸复配作为改善低硫柴油润滑性的添加剂,以防止柴油发动机因燃烧润滑性差的燃料而引起泵的磨损。采用无机碱为催化剂催化天然油脂与醇类化合物反应合成甘油单双酯,将甘油单酯和双酯混合物与二聚酸复配,得到了对柴油润滑性能改善具有良好协同效应的系列性能改进剂。在添加量为125~250μg·g-1的情况下,对低硫柴油润滑性能的改善效果明显优于进口剂,对柴油的氧化安定性和低温流动性几乎无影响,同时,也与柴油稳定剂、柴油流动改进剂无对抗作用。

主权项:一种低硫柴油润滑性能改进剂制备的工艺,其特征在于:低硫柴油润滑性能改进剂,由以下组分组成:(A)甘油单酯和甘油双酯混合物;(B)二聚酸;其特征在于:组分(A)甘油单酯和甘油双酯混合物与组分(B)二聚酸的重量比为1∶0.2~0.8;该制备工艺包括以下步骤:(1)甘油单酯和甘油双酯混合物的合成:取摩尔比为1∶1~2的天然油脂与醇类化合物,同无机碱催化剂一起置于装有电动搅拌器、温度计、回流冷凝管的反应器中,在50~200℃温度下反应1~20小时,进行不完全的酯交换反应,冷却至室温,沉降2~8小时后,通过相分离出底部沉降出来的少量副产物甘油和催化剂,得到甘油单酯和甘油双酯混合物备用;(2)复配:将步骤(1)中得到的甘油单酯和甘油双酯混合物与二聚酸按照上述的比例复配,即得低硫柴油润滑性能改进剂;所述天然油脂为植物油;所述的无机碱催化剂是碳酸钾,碳酸钠,氢氧化钾,氢氧化钠,碳酸氢钾,碳酸氢钠中的一种;无机碱催化剂用量为植物油质量的0.002~0.005%。

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