CN105400554A - 一种甲醇汽油高效复合添加剂及其制备方法 - Google Patents

一种甲醇汽油高效复合添加剂及其制备方法 Download PDF

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CN105400554A
CN105400554A CN201511012643.9A CN201511012643A CN105400554A CN 105400554 A CN105400554 A CN 105400554A CN 201511012643 A CN201511012643 A CN 201511012643A CN 105400554 A CN105400554 A CN 105400554A
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Abstract

本发明提供的甲醇汽油高效复合添加剂,由以下重量份数的组分制成:二乙醇缩甲醛8~10份、叔丁基甲基醚5~7份、异辛醇磷酸酯1~1.5份、纳米铁酸钴1.5~2份、正庚烷1.5~2份、丙二醇丁醚5~7份、椰油酸二乙醇酰胺4~5份、硬脂酸异十三酯1~1.5份、月桂酰肌氨酸钠2~3份。本发明甲醇汽油高效复合添加剂,添加有多种助溶剂、分散剂、动力促进剂、防腐蚀剂等组分,各组分配方独特并通过特殊工艺制成,组分之间协同作用突出;本发明甲醇汽油高效复合添加剂,具有明显提高甲醇汽油抗水性和降低燃烧NOX、HC、CO的排放效果,同时特殊的配方还达到了提升动力和一定的降低油耗的效果。

Description

一种甲醇汽油高效复合添加剂及其制备方法
技术领域
本发明涉及一种车用燃料油添加剂,特别是涉及一种甲醇汽油高效复合添加剂及其制备方法。
技术背景
甲醇作为石油燃料以外内燃机的最佳代用燃料,具有辛烷值高、抗爆性好、含氧量高等特点,特别是其排放物对空气污染相对较小。甲醇的理化特性较接近汽油,低比例与汽油掺烧,发动机可以不作改动。但由于甲醇具有高的汽化潜热和低的蒸汽压,会导致混合气形成及启动困难,因此,较少在汽油机上单独使用。甲醇与汽油低比例(5%一30%)混合燃料,燃烧性能良好、高效清洁环保,商用技术成熟、效益良好、易于推广。
甲醇掺入量一般为5%~30%。以掺入15%者为最多,称M15甲醇汽油。抗爆性能好,研究法辛烷值(RON)随甲醇掺入量的增加而增高,马达法辛烷值(MON)则不受影响。燃烧排出物的毒性比普通含铅汽油小,排气中一氧化碳含量也较少。燃烧清洁性能良好。甲醇汽油中的甲醇既是一种能源,又是汽油品质的改良剂和绿色增氧剂。由于甲醇含氧原子,使汽油充分燃烧,能有效降低汽车尾气排放有害气体总量的50%以上,有利于保护大气环境。所以甲醇汽油环保、成本低,节省资源节省外汇造福人类,市场竞争力强,具有极好的发展前景。
甲醇分子中含有一0H,极性很强,易与水形成氢键而互溶,具有很强得的吸水陛。即使甲醇与汽油已经形成稳定均一的混合物,水分的存在会使甲醇与汽油的临界互溶性降低,使甲醇一汽油体系产生分层现象,降低燃料的稳定性,甚至在某些情况下从潮湿空气中吸收的水分,也会引起甲醇与汽油重新分层嗍。这是因为水分的存在促进了水分子和甲醇分子氢键的缔合作用。甲醇中含水0.5%会使相分离区明显地扩大,这样可能使发动机停止工作,并严重腐蚀汽化器和燃料系统中的其它部件。所以,研究甲醇汽油的抗水性,是甲醇汽油运输、安全存储和使用的重点问题之一。
发明内容
本发明的目的是克服已有技术的不足,提供一种性能良好的甲醇汽油高效复合添加剂,以解决甲醇汽油在使用过程抗水性差的问题,并起到降低燃烧排放,增强动力降低油耗的效果。
本发明提供的甲醇汽油高效复合添加剂,由以下重量份数的组分制成:二乙醇缩甲醛8~10份、叔丁基甲基醚5~7份、异辛醇磷酸酯1~1.5份、纳米铁酸钴1.5~2份、正庚烷1.5~2份、丙二醇丁醚5~7份、椰油酸二乙醇酰胺4~5份、硬脂酸异十三酯1~1.5份、月桂酰肌氨酸钠2~3份。
作为优化,该甲醇汽油高效复合添加剂,由以下重量份数的组分制成:二乙醇缩甲醛9份、叔丁基甲基醚6份、异辛醇磷酸酯1.2份、平均粒径30nm的纳米铁酸钴1.8份、正庚烷1.6份、丙二醇丁醚6份、椰油酸二乙醇酰胺4.5份、硬脂酸异十三酯1.1份、月桂酰肌氨酸钠2.5份。
本发明甲醇汽油高效复合添加剂的制备方法,包括以下步骤:
(1)将所述重量份数的二乙醇缩甲醛、叔丁基甲基醚、异辛醇磷酸酯混合后,用磁力搅拌机搅拌3~4min,然后加入所述重量份数的纳米铁酸钴、正庚烷,用超声分散机,在56~60℃条件下超声分散60~80min;
(2)将所述重量份数的丙二醇丁醚份、椰油酸二乙醇酰胺、硬脂酸异十三酯、月桂酰肌氨酸钠混合后,用磁力搅拌机搅拌5~8min;
(3)将同步骤(1)中的混合物和步骤(2)中的混合物混合后,用磁力搅拌机搅拌3~4min,然后在52~55℃条件下超声分散60~80min,即得。
本发明甲醇汽油高效复合添加剂,添加有多种助溶剂、分散剂、动力促进剂、防腐蚀剂等组分,各组分配方独特并通过特殊工艺制成,组分之间协同作用突出;本发明甲醇汽油高效复合添加剂,具有明显提高甲醇汽油抗水性和降低燃烧NOX、HC、CO的排放效果,同时特殊的配方还达到了提升动力和一定的降低油耗的效果。
相关实验:发动机性能试验,试验装置:湘仪DDM16发动机测试系统、GWIOO电涡流水力测功机、湘仪BYHi由耗变送器、FGA4500排气分析仪等。试验中对发动机转速、扭矩、冷却水温度、机油温度和压力等参数进行实时监测和控制,以确保试验工况的稳定。分别采用普通M30甲醇汽油和添加本发明实施例1、实施例2、实施例3,添加量为650mg/L的M30甲醇汽油,在转速2800r/min对发动机的排放和油耗、功率进行对比试验。实验结果见表1和表2。通过表1和表2可见本发明甲醇汽油高效复合添加剂,对降低NOX、HC、CO的排放效果明显,在发动机一定转速范围内能够起到提升动力以及降低油耗的作用。
抗水性试验,取M30甲醇汽油,和添加本发明实施例1、实施例2、实施例3,添加量为650mg/L的M30甲醇汽油各20mL,分别置于具塞量筒中,加入一定量的水,密封量筒,振荡5min,在室温下观察样品是否出现相分离。测定甲醇一汽油体系由透明均匀到相分离时最大用水量。实验结果见表3。通过表3可见本发明甲醇汽油高效复合添加剂对甲醇汽油的抗水性能有良好的改善作用。
具体实施方式
下面给出的实施例拟对本发明作进一步说明,但不能理解为是对本发明保护范围的限制,本领域技术人员根据本发明内容对本发明的一些非本质的改进和调整,仍属于本发明的保护范围。
实施例1:(1)将二乙醇缩甲醛9千克、叔丁基甲基醚6千克、异辛醇磷酸酯(RP-98)1.2千克混合后,用磁力搅拌机搅拌3~4min,然后加入平均粒径30nm的纳米铁酸钴1.8千克、正庚烷1.6千克,用超声分散机,在56~60℃条件下超声分散60~80min;
(2)将丙二醇丁醚6千克、椰油酸二乙醇酰胺(6501)4.5千克、硬脂酸异十三酯1.1千克、月桂酰肌氨酸钠2.5千克混合后,用磁力搅拌机搅拌5~8min;
(3)将同步骤(1)中的混合物和步骤(2)中的混合物混合后,用磁力搅拌机搅拌3~4min,然后在52~55℃条件下超声分散60~80min,即得。使用时,将本发明的甲醇汽油高效复合添加剂,直接添加到甲醇汽油中的添加量为600~800mg/L。
实施例2:(1)将二乙醇缩甲醛8千克、叔丁基甲基醚5千克、异辛醇磷酸酯(RP-98)1千克混合后,用磁力搅拌机搅拌3~4min,然后加入平均粒径30nm的纳米铁酸钴1.5千克、正庚烷1.5千克,用超声分散机,在56~60℃条件下超声分散60~80min;
(2)将丙二醇丁醚5千克、椰油酸二乙醇酰胺(6501)4千克、硬脂酸异十三酯1千克、月桂酰肌氨酸钠2千克混合后,用磁力搅拌机搅拌5~8min;
(3)将同步骤(1)中的混合物和步骤(2)中的混合物混合后,用磁力搅拌机搅拌3~4min,然后在52~55℃条件下超声分散60~80min,即得。使用时,将本发明的甲醇汽油高效复合添加剂,直接添加到甲醇汽油中的添加量为600~800mg/L。
实施例3:(1)将二乙醇缩甲醛10千克、叔丁基甲基醚7千克、异辛醇磷酸酯(RP-98)1.5千克混合后,用磁力搅拌机搅拌3~4min,然后加入平均粒径30nm的纳米铁酸钴2千克、正庚烷2千克,用超声分散机,在56~60℃条件下超声分散60~80min;
(2)将丙二醇丁醚7千克、椰油酸二乙醇酰胺(6501)5千克、硬脂酸异十三酯1.5千克、月桂酰肌氨酸钠3千克混合后,用磁力搅拌机搅拌5~8min;
(3)将同步骤(1)中的混合物和步骤(2)中的混合物混合后,用磁力搅拌机搅拌3~4min,然后在52~55℃条件下超声分散60~80min,即得。使用时,将本发明的甲醇汽油高效复合添加剂,直接添加到甲醇汽油中的添加量为600~800mg/L。

Claims (3)

1.一种甲醇汽油高效复合添加剂,其特征在于由以下重量份数的组分制成:二乙醇缩甲醛8~10份、叔丁基甲基醚5~7份、异辛醇磷酸酯1~1.5份、纳米铁酸钴1.5~2份、正庚烷1.5~2份、丙二醇丁醚5~7份、椰油酸二乙醇酰胺4~5份、硬脂酸异十三酯1~1.5份、月桂酰肌氨酸钠2~3份。
2.根据要求1所述的甲醇汽油高效复合添加剂,其特征在于由以下重量份数的组分制成:二乙醇缩甲醛9份、叔丁基甲基醚6份、异辛醇磷酸酯1.2份、平均粒径30nm的纳米铁酸钴1.8份、正庚烷1.6份、丙二醇丁醚6份、椰油酸二乙醇酰胺4.5份、硬脂酸异十三酯1.1份、月桂酰肌氨酸钠2.5。
3.一种权利要求1或2所述甲醇汽油高效复合添加剂的制备方法,其特征在于包括以下步骤:
(1)将所述重量份数的二乙醇缩甲醛、叔丁基甲基醚、异辛醇磷酸酯混合后,用磁力搅拌机搅拌3~4min,然后加入所述重量份数的纳米铁酸钴、正庚烷,用超声分散机,在56~60℃条件下超声分散60~80min;
(2)将所述重量份数的丙二醇丁醚份、椰油酸二乙醇酰胺、硬脂酸异十三酯、月桂酰肌氨酸钠混合后,用磁力搅拌机搅拌5~8min;
(3)将同步骤(1)中的混合物和步骤(2)中的混合物混合后,用磁力搅拌机搅拌3~4min,然后在52~55℃条件下超声分散60~80min,即得。
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