CN109694754A - 一种无铅车用混合燃料 - Google Patents

一种无铅车用混合燃料 Download PDF

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CN109694754A
CN109694754A CN201710991523.0A CN201710991523A CN109694754A CN 109694754 A CN109694754 A CN 109694754A CN 201710991523 A CN201710991523 A CN 201710991523A CN 109694754 A CN109694754 A CN 109694754A
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mixed fuel
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陈雪娇
林义凯
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Ningde Green Innovative Energy Technology Co Ltd
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Abstract

本发明涉及一种无铅车用混合燃料,包括以下组分:醇类混合物、轻质油、低碳烷烃、醇类活性添加剂、助溶剂和消烟剂。由以下步骤制备:将轻质油、低碳烷烃、醇类活性添加剂、助溶剂和消烟剂加入静态混合器多级混合,再加入醇类混合物二次混合,过滤即得。本发明弥补了甲醇热值低的缺点,可将汽油充分燃烧,使油耗相应减少;燃烧充分,尾气排放不含铅;燃料原材料来源广泛,生产工艺简单,生产成本低,质优价廉,应用前景广泛。

Description

一种无铅车用混合燃料
技术领域
本发明涉及一种无铅车用混合燃料,属于车用能源技术领域。
背景技术
随着汽车工业快速发展,车用燃料需求显得十分迫切,排气净化、环境保护、交通安全、节约能源已上升到关系国民经济发展,国家安全和社会稳定的战略问题。目前,汽油和柴油是汽车发动机使用的主要燃料,为了提高汽油辛烷值(RON),可以采用加入抗爆剂四乙基铅的办法,这是自20世纪30年代以来一直被广泛采用的最经济有效的办法。然而四乙基铅有剧毒,含铅的燃烧废弃也是大气中铅污染的主要来源,环境中的铅会通过呼吸道及食物链进入人体中,使人体血液中铅含量增高,继而因积累作用逐步危害人体肾醚和神经。大量研究已完全证实了大城市的居民身体中的血铅含量与含铅汽油的使用量是密切相关的,因此减少汽油中的加铅量,逐步推广使用无铅燃料已是一种必然的趋势。
甲醇是一种可再生的清洁燃料,可以说是取之不尽、用之不竭的。甲醇与汽油的相溶性很差,二者在常态下几乎不相溶,因此需要加入助剂才能改善其相溶性,同时提高其作为燃料的各种理化性能。目前国内如山西、河南、四川、新疆等地均在作该项技术的研发应用,但所制产品作为汽车动力燃料,掺烧比较低,一般在20%左右,且普遍存在理化时间长、对动力有不利影响、冷启动不畅、尾气排放改善欠佳、经济效益不够明显等不足之处。
所以开发一种高效无铅的,能够符合国家标准的环保车用燃料是十分具有实用价值的。
发明内容
本发明为了解决现有石油资源短缺,汽油燃烧后所排放的污染物较多,严重污染环境和成本高的问题,提供了一种无铅车用混合燃料,解决该问题的具体技术方案如下:
一种无铅车用混合燃料,按体积百分比计算,包括以下组分:醇类混合物15-85%、轻质油15-85%、低碳烷烃0-10%、醇类活性添加剂0.7-18%、助溶剂0-5%和消烟剂0-0.05%。
本发明的有益效果是:弥补了甲醇热值低的缺点,使发动机动力性能有了明显的提高,可将汽油不能完全燃烧的部分充分燃烧,从而使油耗相应减少;本发明的混合燃料比汽油和现有同品种燃料的防爆、防易燃、抗静电的性能更加突出,保证使用更为安全可靠,经检测其中的不含铅,硫含量是国家无铅汽油标准的1/8,苯含量是国家无铅汽油标准的1/30;燃烧充分,能够充分发挥其热效率,提高发动机的动力性,环保性比汽油燃烧时所排放的有害气体含量指标下降80%左右;本发明适用于各种汽油发动机,而且不需要对发动机做任何改动,可以以任何比例加入到无铅汽油中使用。
在上述技术方案的基础上,本发明还可以做如下改进:
进一步的,醇类混合物为以下体积百分比的甲醇81%、异丙醇9%和丁醇10%的混合物。
采用上述进一步的有益效果是:弥补了甲醇热值低的缺点,使发动机动力性能有了明显的提高。
进一步的,低碳烷烃为8-14个碳的烷烃混合物和低分子量的聚合物的混合物。
采用上述进一步的有益效果是:可将汽油不能完全燃烧的部分充分燃烧,从而使油耗相应减少。
进一步的,低分子量的聚合物为聚乙烯和聚丙烯的一种或多种。
采用上述进一步的有益效果是:提高燃料的防爆、防易燃、抗静电的性能,保证使用更为安全可靠。
进一步的,醇类活性添加剂为邻苯二甲酸二(2-乙基己基)酯、环氧大豆油脂肪酸甲酯和对叔丁基苯酚的混合物。
采用上述进一步的有益效果是:能够充分发挥混合燃料热效率,提高发动机的动力性。
进一步的,助溶剂包括以下体积百分比的甲苯34%、二甲苯42%、三甲苯6%、四甲苯及萘18%。
采用上述进一步的有益效果是:使得本发明适用于各种汽油发动机,且不需要对发动机做任何改动。
进一步的,消烟剂为二茂铁。
采用上述进一步的有益效果是:添加比例低,使用方便,热稳定性好、无毒,能有效减少混合燃料的发烟量和烟密度,高效环保。
本发明制备方法包括以下步骤:
步骤1)、按照上述无铅车用混合燃料原料的体积比取原料;
步骤2)将轻质油15-85%、低碳烷烃0-10%、醇类活性添加剂0.7-18%、助溶剂0-5%和消烟剂0-0.05%加入静态混合器多级混合,再加入醇类混合物15-85%二次混合,过滤即得到所述无铅车用混合燃料。
本发明的有益效果是:本发明燃料原材料来源广泛,可以就地取材,生产工艺简单,生产成本低,质优价廉,应用前景广泛。
具体实施方式
结合以下实施例对本发明的原理和特征进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。
实施例1
将轻质油15%、低碳烷烃10%、醇类活性添加剂18%、助溶剂5%和消烟剂0.05%加入静态混合器多级混合,再加入醇类混合物51.95%二次混合,过滤即得到所述无铅车用混合燃料。
实施例2
将轻质油15%、醇类活性添加剂0.7%、加入静态混合器多级混合,再加入醇类混合物84.3%二次混合,过滤即得到所述无铅车用混合燃料。
实施例3
将轻质油46.97%、低碳烷烃5%、醇类活性添加剂5%、助溶剂3%和消烟剂0.03%加入静态混合器多级混合,再加入醇类混合物40%二次混合,过滤即得到所述无铅车用混合燃料。
实施例4
将轻质油40%、低碳烷烃10%、醇类活性添加剂4.95%、助溶剂5%和消烟剂0.05%加入静态混合器多级混合,再加入醇类混合物40%二次混合,过滤即得到所述无铅车用混合燃料。
实施例5
将轻质油20%、低碳烷烃10%、醇类活性添加剂4.96%、助溶剂5%和消烟剂0.04%加入静态混合器多级混合,再加入醇类混合物60%二次混合,过滤即得到所述无铅车用混合燃料。
性能检测
将实施例1-5与市售92号无铅汽油用于同一夏利TJ7100进行性能检测,检测结果如表1
表1无铅混合燃料与市售92号无铅汽油对比表
由表1所列检测结果可见,较市售92号无铅汽油相比,受检车辆使用无铅混合燃料其引擎功率增加了2.82%,等百公里油耗降低了11.78%。
本发明无铅车用混合燃料部分指标与国家无铅汽油标准GB17930对比如表2
表2无铅车用混合燃料部分指标与国标对比
硫m%≯ 烯烃m%≯ 芳烃m%≯ 苯m%≯ 铅m%≯
实施例1 0.01 25 27 0.2 1
实施例2 0.01 25 27 0.2 2
实施例3 0.02 23 28 0.3 1
实施例4 0.01 26 26 0.1 1
实施例5 0.01 25 28 0.2 1
国家标准 0.08 35 40 2.5 5
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一种无铅车用混合燃料,其特征在于,按体积百分比计算,包括以下组分:醇类混合物15-85%、轻质油15-85%、低碳烷烃0-10%、醇类活性添加剂0.7-18%、助溶剂0-5%和消烟剂0-0.05%。
2.根据权利要求1所述的一种无铅车用混合燃料,其特征在于,所述醇类混合物为以下体积百分比的甲醇81%、异丙醇9%和丁醇10%的混合物。
3.根据权利要求1所述的一种无铅车用混合燃料,其特征在于,所述低碳烷烃为8-14个碳的烷烃混合物和/或低分子量的聚合物的混合物。
4.根据权利要求3所述的一种无铅车用混合燃料,其特征在于,所述低分子量的聚合物为聚乙烯和/或聚丙烯。
5.根据权利要求1至4任一项所述的一种无铅车用混合燃料,其特征在于,所述醇类活性添加剂为邻苯二甲酸二(2-乙基己基)酯、环氧大豆油脂肪酸甲酯和对叔丁基苯酚一种或者任意几种的混合物。
6.根据权利要求1至4任一项所述的一种无铅车用混合燃料,其特征在于,所述助溶剂包括以下体积百分比的甲苯34%、二甲苯42%、三甲苯6%、四甲苯及萘18%。
7.根据权利要求1至4任一项所述的一种无铅车用混合燃料,其特征在于,所述消烟剂为二茂铁。
8.一种无铅车用混合燃料的制备方法,其特征在于,包括以下步骤:
步骤1)、按照权利要求所述无铅车用混合燃料所述原料的体积比取原料;
步骤2)将轻质油15-85%、低碳烷烃0-10%、醇类活性添加剂0.7-18%、助溶剂0-5%和消烟剂0-0.05%加入静态混合器多级混合,再加入醇类混合物15-85%二次混合,过滤即得到所述无铅车用混合燃料。
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