CN107164002B - 一种甲醇汽油助溶剂 - Google Patents

一种甲醇汽油助溶剂 Download PDF

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CN107164002B
CN107164002B CN201710424682.2A CN201710424682A CN107164002B CN 107164002 B CN107164002 B CN 107164002B CN 201710424682 A CN201710424682 A CN 201710424682A CN 107164002 B CN107164002 B CN 107164002B
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吴兴旺
盛开洋
许丽君
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Boao Zongheng Network Technology Co ltd
Henan Jing te Biotechnology Co.,Ltd.
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Abstract

本发明公开了一种甲醇汽油助溶剂,属于燃料助剂制备技术领域。本发明首先以纳米四氧化三铁为载体,经超声分散于硅酸钠溶液中,再用氢氧化钠溶液调节,经冷藏结晶后高温煅烧,制得以纳米四氧化三铁为内核,Na2O·SiO2为有效成分的磁性催化剂,并利用自制的磁性催化剂催化甲醇与植物油发生酯交换反应,回收催化剂后,静置分层将产物洗涤干燥后减压蒸馏,将馏出物与甲苯、油酸等恒温密闭搅拌混合制得甲醇汽油助溶剂。本发明的有益效果是:本发明制备步骤简单,所得甲醇汽油助溶剂稳定性好,无分层现象出现,使用后具有较好的助溶效果,可有效提高甲醇汽油的抗相分离能力和长期贮存稳定性。

Description

一种甲醇汽油助溶剂
技术领域
本发明涉及一种甲醇汽油助溶剂,属于燃料助剂制备技术领域。
背景技术
随着工业化进程的加快和机动车辆的不断增加,石油资源紧缺,世界能源面临危机,在世界范围内石油燃料的供需矛盾日益突出,开拓能源应用新领域,保护生态环境等都成为亟待解决的问题。人们在研究中发现,甲醇的性能与汽油相近,且来源丰富,通过与汽油掺混形成的甲醇汽油,可以作为汽油的一类重要替代燃料。从节约能源、减少对大气的污染、减轻对石油燃料依赖的角度来说,甲醇汽油具有很好的开发价值和应用前景。但是,甲醇汽油在实际应用过程中均存在溶胀性、蒸发性以及遇水不稳定性等问题。这是由于甲醇分子中含有羟基,极性很强,易与水形成氢键而互溶,具有很强的吸水性,在储存和使用甲醇汽油的过程中,会自动从空气中吸收水分,而汽油是憎水性物质,当甲醇汽油中的水分含量达到一定程度时,便出现油水分层现象。针对这些问题,人们研究开发出了一种甲醇汽油助溶剂。
甲醇汽油助溶剂是一种新型环保燃料助剂产品,是在汽油、甲醇、水复合体系中加入合适的表面活性剂(如高级醇、醚、芳烃等化合物)作为乳化剂,把含水甲醇汽油中的水和甲醇进行乳化,每个小水滴外裹一层油膜,即形成油包水型微乳液,将油、水界面转化为油、油界面使甲醇汽油不易发生相分离,使其燃烧速度、气化热值、互溶性、爆发力加速性能等方面接近传统汽油的甲醇燃料,成品无须对发动机和装置进行改造,可直接使用。但还存在以下问题:助溶剂使用过程中稳定性较差,不利于甲醇汽油长期贮存,易出现分层现象,导致助溶效果较差,甲醇汽油抗相分离能力变差。
因此,如何实现一种使用过程中稳定性好,制得的甲醇汽油抗相分离能力佳,利于甲醇汽油长期贮存的助溶剂是业内亟待解决的技术问题。
发明内容
本发明所要解决的技术问题:针对传统甲醇汽油助溶剂使用过程中稳定性差,易出现分层现象,导致助溶效果差,甲醇汽油抗相分离能力变差,不利于甲醇汽油长期贮存的问题,提供了一种甲醇汽油助溶剂。
为解决上述技术问题,本发明采用如下所述的技术方案是:
一种甲醇汽油助溶剂,是由以下重量份数原料组成:50~70份脂肪酸酯磺酸盐,10~15份甲苯,8~15份二甲苯,0.3~0.5份2,5-呋喃二甲酸,10~15份油酸,8~10份乙二醇,10~20份异丙醇;
具体制备方法如下:
(1)磁性催化剂的合成:将纳米四氧化三铁经超声分散于水玻璃中,在恒温搅拌状态下,向水玻璃中滴加氢氧化钠溶液,待反应结束,离心分离后煅烧,即得磁性催化剂;
(2)脂肪酸酯磺酸盐的合成:依次取10~20g磁性催化剂,400~500mL无水甲醇,100~120mL无水乙醇,混合均匀后滴加100~150mL植物油,待反应结束,将催化剂回收后,静置分层,取上层液体产物,再经减压蒸馏和磺化,即得脂肪酸酯磺酸盐;
(3)甲醇汽油助溶剂的配置:将甲苯、二甲苯、2,5-呋喃二甲酸、油酸、乙二醇和异丙醇恒温搅拌混合均匀后,再加入脂肪酸酯磺酸盐,恒温搅拌混合均匀,即可。
步骤(1)所述的水玻璃模数为3.1~3.5,波美度为39~41。
步骤(1)所述的煅烧条件为:于马弗炉中,以6~8℃/min速率程序升温至500~550℃,保温煅烧3~5h,再随炉冷却至室温。
步骤(2)所述的植物油是按重量份数计,由30~40份蓖麻油,20~30份棉籽油,60~70份大豆油,3~5份葵花籽油,混合而成。
步骤(2)所述的减压蒸馏条件为:温度为180~200℃,真空度为650~700mmHg,蒸馏时间为30~45min。
本发明与其他方法相比,有益技术效果是:
(1)本发明首先以纳米四氧化三铁为磁核,Na2O·SiO2为有效成分,制得磁性催化剂,利用该催化剂的高催化效率,催化混合植物油与甲醇、乙醇发生酯交换反应,再经硫酸磺化制得相应的脂肪酸酯,并以此脂肪酸酯为产品主要成分,利用其优异的乳化性能,在使用过程中,将含水甲醇汽油中的水和甲醇进行乳化,在水滴外裹一层油膜,形成稳定的油包水型微乳液,将体系中的油、水界面转化为油、油界面使甲醇汽油不易发生相分离,相比于传统乳化剂,本发明产品所得乳液稳定性更高;
(2)本发明通过添加脂肪酸酯这一主要成分,所得产品乳化性、水稳定性优良,且具有低刺激性、低毒性和生物降解性,与甲醇汽油具有良好的相容性,使其燃烧速度、气化热值、互溶性、爆发力加速性能等方面接近传统汽油的甲醇燃料,成品无须对发动机和装置进行改造,可直接使用。
具体实施方式
首先依次取200~300mL模数为3.1~3.5,波美度为39~41的水玻璃,20~30g纳米四氧化三铁,倒入三口烧瓶中,并将三口烧瓶移入超声振荡仪,以40kHz频率超声分散10~15min,再将三口烧瓶移入数显测速恒温磁力搅拌器,于温度为60~65℃,转速为600~800r/min条件下,边搅拌边向三口烧瓶中滴加80~100mL质量分数为40%氢氧化钠溶液,控制在30~40min内滴完,待滴加完毕,继续恒温搅拌反应60~80min;待恒温搅拌反应结束,将三口烧瓶中物料倒入烧杯,并将烧杯移入冰箱中,于温度为2~4℃条件下,静置6~8h,再将烧杯中物料转入离心机,以6000~8000r/min转速离心分离10~15min,弃去上层液,得下层沉淀物,并将所得下层沉淀物转入烘箱中,于温度为105~110℃条件下干燥至恒重,得干燥沉淀物,再将所得干燥沉淀物转入马弗炉,以6~8℃/min速率程序升温至500~550℃,保温煅烧3~5h,再随炉冷却至室温,出料,即得磁性催化剂;再依次取10~20g所得磁性催化剂,400~500mL无水甲醇,100~120mL无水乙醇,倒入带有回流冷凝管的四口烧瓶中,并将四口烧瓶移入数显测速恒温磁力搅拌器,于温度为50~55℃,转速为600~800r/min条件下,恒温搅拌混合15~30min后,通过滴液漏斗向四口烧瓶中滴加100~150mL植物油,控制在30~45min内滴完;待植物油滴加完毕,继续恒温搅拌反应2~4h,再将四口烧瓶中物料倒入烧杯中,用永磁铁回收烧杯中磁性催化剂,并将烧杯中物料转入分液漏斗,静置分层,收集上层液体产物,并用去离子水洗涤所得上层液体产物3~5次;待洗涤完成后,量取100~120mL洗涤后的上层液体产物,倒入烧杯中,并向烧杯中加入10~15g无水氯化钙,用玻璃棒搅拌混合10~20min后,将烧杯中物料转入离心机,以6800~7000r/min转速离心分离10~15min,弃去下层沉淀物,收集上层液,并将所得上层液转入蒸馏瓶中,于温度为180~200℃,真空度为650~700mmHg条件下,减压蒸馏30~45min,收集馏出物,再用质量分数为98%浓硫酸磺化处理,得脂肪酸酯磺酸盐;最后按重量份数计,在混料机中依次加入50~70份脂肪酸酯磺酸盐,10~15份甲苯,8~15份二甲苯,0.3~0.5份2,5-呋喃二甲酸,10~15份油酸,8~10份乙二醇,10~20份异丙醇,于温度为40~45℃,转速为600~800r/min条件下,恒温密闭搅拌混合2~4h后,自然冷却至室温,出料,灌装,即得甲醇汽油助溶剂。所述的植物油的制备方法为:按重量份数计,依次取30~40份蓖麻油,20~30份棉籽油,60~70份大豆油,3~5份葵花籽油,于转速为300~500r/min条件下,搅拌混合2~4h,即得植物油。
实例1
首先依次取200mL模数为3.1,波美度为39的水玻璃,20g纳米四氧化三铁,倒入三口烧瓶中,并将三口烧瓶移入超声振荡仪,以40kHz频率超声分散10min,再将三口烧瓶移入数显测速恒温磁力搅拌器,于温度为60℃,转速为600r/min条件下,边搅拌边向三口烧瓶中滴加80mL质量分数为40%氢氧化钠溶液,控制在30min内滴完,待滴加完毕,继续恒温搅拌反应60min;待恒温搅拌反应结束,将三口烧瓶中物料倒入烧杯,并将烧杯移入冰箱中,于温度为2℃条件下,静置6h,再将烧杯中物料转入离心机,以6000r/min转速离心分离10min,弃去上层液,得下层沉淀物,并将所得下层沉淀物转入烘箱中,于温度为105℃条件下干燥至恒重,得干燥沉淀物,再将所得干燥沉淀物转入马弗炉,以6℃/min速率程序升温至500℃,保温煅烧3h,再随炉冷却至室温,出料,即得磁性催化剂;再依次取10g所得磁性催化剂,400mL无水甲醇,100mL无水乙醇,倒入带有回流冷凝管的四口烧瓶中,并将四口烧瓶移入数显测速恒温磁力搅拌器,于温度为50℃,转速为600r/min条件下,恒温搅拌混合15min后,通过滴液漏斗向四口烧瓶中滴加100mL植物油,控制在30min内滴完;待植物油滴加完毕,继续恒温搅拌反应2h,再将四口烧瓶中物料倒入烧杯中,用永磁铁回收烧杯中磁性催化剂,并将烧杯中物料转入分液漏斗,静置分层,收集上层液体产物,并用去离子水洗涤所得上层液体产物3次;待洗涤完成后,量取100mL洗涤后的上层液体产物,倒入烧杯中,并向烧杯中加入10g无水氯化钙,用玻璃棒搅拌混合10min后,将烧杯中物料转入离心机,以6800r/min转速离心分离10min,弃去下层沉淀物,收集上层液,并将所得上层液转入蒸馏瓶中,于温度为180℃,真空度为650mmHg条件下,减压蒸馏30min,收集馏出物,再用质量分数为98%浓硫酸磺化处理,得脂肪酸酯磺酸盐;最后按重量份数计,在混料机中依次加入50份脂肪酸酯磺酸盐,10份甲苯,8份二甲苯,0.3份2,5-呋喃二甲酸,10份油酸,8份乙二醇,10份异丙醇,于温度为40℃,转速为600r/min条件下,恒温密闭搅拌混合2h后,自然冷却至室温,出料,灌装,即得甲醇汽油助溶剂。所述的植物油的制备方法为:按重量份数计,依次取30份蓖麻油,20份棉籽油,60份大豆油,3份葵花籽油,于转速为300r/min条件下,搅拌混合2h,即得植物油。
按重量份数计,称取0.4份本发明制得的甲醇汽油助溶剂,80份95号汽油和14份甲醇,依次装入搅拌器中,搅拌混合均匀制得甲醇汽油即可。本发明甲醇汽油助溶剂助溶效果好,制得的甲醇汽油在-4℃温度下储存58天,无相分离、混浊现象出现,具有较好的抗相分离能力和长期贮存稳定性,且制得的甲醇汽油热值为3.8×107J/kg,而传统甲醇汽油助溶剂制得的甲醇汽油在-4℃温度下储存43天,即有相分离、混浊现象出现,热值仅为3.2×107J/kg。
实例2
首先依次取250mL模数为3.3,波美度为40的水玻璃,25g纳米四氧化三铁,倒入三口烧瓶中,并将三口烧瓶移入超声振荡仪,以40kHz频率超声分散13min,再将三口烧瓶移入数显测速恒温磁力搅拌器,于温度为63℃,转速为700r/min条件下,边搅拌边向三口烧瓶中滴加90mL质量分数为40%氢氧化钠溶液,控制在35min内滴完,待滴加完毕,继续恒温搅拌反应70min;待恒温搅拌反应结束,将三口烧瓶中物料倒入烧杯,并将烧杯移入冰箱中,于温度为3℃条件下,静置7h,再将烧杯中物料转入离心机,以7000r/min转速离心分离13min,弃去上层液,得下层沉淀物,并将所得下层沉淀物转入烘箱中,于温度为108℃条件下干燥至恒重,得干燥沉淀物,再将所得干燥沉淀物转入马弗炉,以7℃/min速率程序升温至530℃,保温煅烧4h,再随炉冷却至室温,出料,即得磁性催化剂;再依次取15g所得磁性催化剂,450mL无水甲醇,110mL无水乙醇,倒入带有回流冷凝管的四口烧瓶中,并将四口烧瓶移入数显测速恒温磁力搅拌器,于温度为53℃,转速为700r/min条件下,恒温搅拌混合22min后,通过滴液漏斗向四口烧瓶中滴加130mL植物油,控制在38min内滴完;待植物油滴加完毕,继续恒温搅拌反应3h,再将四口烧瓶中物料倒入烧杯中,用永磁铁回收烧杯中磁性催化剂,并将烧杯中物料转入分液漏斗,静置分层,收集上层液体产物,并用去离子水洗涤所得上层液体产物4次;待洗涤完成后,量取110mL洗涤后的上层液体产物,倒入烧杯中,并向烧杯中加入13g无水氯化钙,用玻璃棒搅拌混合15min后,将烧杯中物料转入离心机,以6900r/min转速离心分离13min,弃去下层沉淀物,收集上层液,并将所得上层液转入蒸馏瓶中,于温度为190℃,真空度为680mmHg条件下,减压蒸馏38min,收集馏出物,再用质量分数为98%浓硫酸磺化处理,得脂肪酸酯磺酸盐;最后按重量份数计,在混料机中依次加入60份脂肪酸酯磺酸盐,13份甲苯,12份二甲苯,0.4份2,5-呋喃二甲酸,13份油酸,9份乙二醇,15份异丙醇,于温度为43℃,转速为700r/min条件下,恒温密闭搅拌混合3h后,自然冷却至室温,出料,灌装,即得甲醇汽油助溶剂。所述的植物油的制备方法为:按重量份数计,依次取35份蓖麻油,25份棉籽油,65份大豆油,4份葵花籽油,于转速为400r/min条件下,搅拌混合3h,即得植物油。
按重量份数计,称取0.5份本发明制得的甲醇汽油助溶剂,83份95号汽油和15份甲醇,依次装入搅拌器中,搅拌混合均匀制得甲醇汽油即可。本发明甲醇汽油助溶剂助溶效果好,制得的甲醇汽油在20℃温度下储存52天,无相分离、混浊现象出现,具有较好的抗相分离能力和长期贮存稳定性,且制得的甲醇汽油热值为3.9×107J/kg,而传统甲醇汽油助溶剂制得的甲醇汽油在20℃温度下储存38天,即有相分离、混浊现象出现,热值仅为3.4×107J/kg。
实例3
首先依次取300mL模数为3.5,波美度为41的水玻璃,30g纳米四氧化三铁,倒入三口烧瓶中,并将三口烧瓶移入超声振荡仪,以40kHz频率超声分散15min,再将三口烧瓶移入数显测速恒温磁力搅拌器,于温度为65℃,转速为800r/min条件下,边搅拌边向三口烧瓶中滴加100mL质量分数为40%氢氧化钠溶液,控制在40min内滴完,待滴加完毕,继续恒温搅拌反应80min;待恒温搅拌反应结束,将三口烧瓶中物料倒入烧杯,并将烧杯移入冰箱中,于温度为4℃条件下,静置8h,再将烧杯中物料转入离心机,以8000r/min转速离心分离15min,弃去上层液,得下层沉淀物,并将所得下层沉淀物转入烘箱中,于温度为110℃条件下干燥至恒重,得干燥沉淀物,再将所得干燥沉淀物转入马弗炉,以8℃/min速率程序升温至550℃,保温煅烧5h,再随炉冷却至室温,出料,即得磁性催化剂;再依次取20g所得磁性催化剂,500mL无水甲醇,120mL无水乙醇,倒入带有回流冷凝管的四口烧瓶中,并将四口烧瓶移入数显测速恒温磁力搅拌器,于温度为55℃,转速为800r/min条件下,恒温搅拌混合30min后,通过滴液漏斗向四口烧瓶中滴加150mL植物油,控制在45min内滴完;待植物油滴加完毕,继续恒温搅拌反应4h,再将四口烧瓶中物料倒入烧杯中,用永磁铁回收烧杯中磁性催化剂,并将烧杯中物料转入分液漏斗,静置分层,收集上层液体产物,并用去离子水洗涤所得上层液体产物5次;待洗涤完成后,量取120mL洗涤后的上层液体产物,倒入烧杯中,并向烧杯中加入15g无水氯化钙,用玻璃棒搅拌混合20min后,将烧杯中物料转入离心机,以7000r/min转速离心分离15min,弃去下层沉淀物,收集上层液,并将所得上层液转入蒸馏瓶中,于温度为200℃,真空度为700mmHg条件下,减压蒸馏45min,收集馏出物,再用质量分数为98%浓硫酸磺化处理,得脂肪酸酯磺酸盐;最后按重量份数计,在混料机中依次加入70份脂肪酸酯磺酸盐,15份甲苯,15份二甲苯,0.5份2,5-呋喃二甲酸,15份油酸,10份乙二醇,20份异丙醇,于温度为45℃,转速为800r/min条件下,恒温密闭搅拌混合4h后,自然冷却至室温,出料,灌装,即得甲醇汽油助溶剂。所述的植物油的制备方法为:按重量份数计,依次取40份蓖麻油,30份棉籽油,70份大豆油,5份葵花籽油,于转速为500r/min条件下,搅拌混合4h,即得植物油。
按重量份数计,称取0.6份本发明制得的甲醇汽油助溶剂,85份95号汽油和16份甲醇,依次装入搅拌器中,搅拌混合均匀制得甲醇汽油即可。本发明甲醇汽油助溶剂助溶效果好,制得的甲醇汽油在40℃温度下储存45天,无相分离、混浊现象出现,具有较好的抗相分离能力和长期贮存稳定性,且制得的甲醇汽油热值为4.0×107J/kg,而传统甲醇汽油助溶剂制得的甲醇汽油在40℃温度下储存30天,即有相分离、混浊现象出现,热值仅为3.5×107J/kg。

Claims (5)

1.一种甲醇汽油助溶剂,其特征在于:是由以下重量份数原料组成:50~70份脂肪酸酯磺酸盐,10~15份甲苯,8~15份二甲苯,0.3~0.5份2,5-呋喃二甲酸,10~15份油酸,8~10份乙二醇,10~20份异丙醇;
具体制备方法如下:
(1)磁性催化剂的合成:将纳米四氧化三铁经超声分散于水玻璃中,在恒温搅拌状态下,向水玻璃中滴加氢氧化钠溶液,待反应结束,离心分离后煅烧,即得磁性催化剂;
(2)脂肪酸酯磺酸盐的合成:依次取10~20g磁性催化剂,400~500mL无水甲醇,100~120mL无水乙醇,混合均匀后滴加100~150mL植物油,待反应结束,将催化剂回收后,静置分层,取上层液体产物,再经减压蒸馏和磺化,即得脂肪酸酯磺酸盐;
(3)甲醇汽油助溶剂的配置:将甲苯、二甲苯、2,5-呋喃二甲酸、油酸、乙二醇和异丙醇恒温搅拌混合均匀后,再加入脂肪酸酯磺酸盐,恒温搅拌混合均匀,即可。
2.根据权利要求1所述的一种甲醇汽油助溶剂,其特征在于:步骤(1)所述的水玻璃模数为3.1~3.5,波美度为39~41。
3.根据权利要求1所述的一种甲醇汽油助溶剂,其特征在于:步骤(1)所述的煅烧条件为:于马弗炉中,以6~8℃/min速率程序升温至500~550℃,保温煅烧3~5h,再随炉冷却至室温。
4.根据权利要求1所述的一种甲醇汽油助溶剂,其特征在于:步骤(2)所述的植物油是按重量份数计,由30~40份蓖麻油,20~30份棉籽油,60~70份大豆油,3~5份葵花籽油,混合而成。
5.根据权利要求1所述的一种甲醇汽油助溶剂,其特征在于:步骤(2)所述的减压蒸馏条件为:温度为180~200℃,真空度为650~700mmHg,蒸馏时间为30~45min。
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