CN114921270B - 一种增效的乙醇汽油及其制备方法和应用 - Google Patents
一种增效的乙醇汽油及其制备方法和应用 Download PDFInfo
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Abstract
本发明属于燃油技术领域,涉及乙醇汽油,具体涉及一种增效的乙醇汽油及其制备方法和应用。以乙二醇单丁醚、戊烷和甲基叔丁基醚为添加剂,对乙醇汽油进行改性处理。将0.5‑5%乙二醇单丁醚、1‑5%戊烷、10%乙醇充分溶合后,再加入1‑5%甲基叔丁基醚充分溶合后,得到增效的乙醇汽油添加剂。然后与汽油充分溶合,即得到增效的乙醇汽油。在汽车上使用配制好的乙醇汽油,行驶百公里后,与纯92号汽油效果、耗油量相当。行驶过程的动力与汽油相当。本发明制备的增效的乙醇汽油一方面在具有与汽油相当的功效的同时减少了排污,在一定程度上保护了环境;另一方面,由于添加剂种类较少,因此减少了成本,实现了节能环保的目的。
Description
技术领域
本发明属于燃油技术领域,涉及乙醇汽油,具体涉及一种增效的乙醇汽油及其制备方法和应用。
背景技术
按照我国的国家标准,乙醇汽油是用90%的普通汽油与10%的燃料乙醇调和而成。乙醇汽油是一种新型的清洁的可再生的燃料,其发展可谓符合低碳经济、循环经济以及可持续发展战略的要求。国家也提倡采用乙醇汽油已经多年,陈粮转换,加入10%的乙醇汽油大大减少了汽油的排污,具有以下优点:
1)辛烷值高,抗爆性好。
2)乙醇含氧量高达34.7%,在汽油中含10%的乙醇含氧量就能达到3.5%。
3)车用乙醇汽油的使用可有效的降低汽车尾气排放,改善能源结构。国内研究表明,E15乙醇汽油(汽油中乙醇含量为15%)比纯车用无铅汽油碳烃排量下降16.2%,一氧化碳排量下降30%。
4)燃料乙醇的生产资源丰富,技术成熟。当在汽油中掺兑少于10%时,对在用汽车发动机无需进行大的改动,即可直接使用乙醇汽油。
但在使用时会发现,乙醇汽油虽然排污大大降低不少,达到理想效果,但仍存在着一些不容忽视的问题。
如:1)乙醇的热值是常规车用汽油的60%,据有关资料的报道,若汽车不作任何改动就使用含乙醇10%的混合汽油时,发动机的油耗会增加5%。
2)乙醇的汽化潜热大,理论空燃比下的蒸发温度大于常规汽油。影响混合气的形成及燃烧速度,导致汽车动力性,经济型,及冷启动性的下降,不利于汽车的加速性。
3)乙醇在燃烧过程中会产生乙酸,对汽车金属特别是铜有腐蚀作用。有关试验表明,在汽油中乙醇的含量在0~10%时,对金属基本没有腐蚀,但乙醇含量超过15%时,必须添加有效的腐蚀抑止剂。
4)乙醇是一种优良溶剂,易对汽车的密封橡胶及其他合成非金属材料产生轻微的腐蚀,溶涨,软化或龟裂作用。
5)乙醇易吸于水,车用乙醇汽油的含水量超过标准指标后,容易发生液相分离。
而现有技术中乙醇汽油中多添加了多种助剂对乙醇汽油进行改性,如助燃添加剂、提高热效率添加剂、助融添加剂、缓释稳定剂、润滑防腐耐磨添加剂、沸点阻释添加剂、防溶胀添加剂等,这些助剂虽然能改善乙醇汽油的性能,但较多的添加剂意味着乙醇汽油成本的升高。因此,亟需研发一种增效的乙醇汽油改善乙醇汽油使用过程中出现的缺陷,进而推动乙醇汽油更好的发展,满足国家汽油标准升级和环境质量的更高要求。
发明内容
针对上述技术问题,本发明提出一种增效的乙醇汽油及其制备方法和应用。以乙二醇单丁醚、戊烷和甲基叔丁基醚作为增效的乙醇汽油添加剂,对乙醇汽油进行改性处理,进而达到常规92号汽油的使用水平。
为了达到上述目的,本发明的技术方案是这样实现的:
一种增效的乙醇汽油,包括汽油和增效的乙醇汽油添加剂,以增效的乙醇汽油的总体积为基准,所述的增效的乙醇汽油添加剂按体积百分比包括0.5-5%乙二醇单丁醚、1-5%戊烷、10%乙醇和1-5%甲基叔丁基醚。
进一步,所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、2-5%戊烷、10%乙醇和2-5%甲基叔丁基醚。
进一步,所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、3-5%戊烷、10%乙醇和3-5%甲基叔丁基醚。
进一步,所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、5%戊烷、10%乙醇和5%甲基叔丁基醚。
进一步,所述的增效的乙醇汽油添加剂按体积百分比包括5%乙二醇单丁醚、5%戊烷、10%乙醇和5%甲基叔丁基醚。
进一步,所述的增效的乙醇汽油的制备方法,步骤如下:将乙二醇单丁醚与戊烷和乙醇进行搅拌混合后,再加入甲基叔丁基醚进行搅拌混合,得到增效的乙醇汽油添加剂,然后再与汽油充分混合,即得增效的乙醇汽油。
进一步,所述的方法制备的增效的乙醇汽油在车用燃料中的应用。
进一步,所述的应用为:以汽油和增效的乙醇汽油添加剂的总体积为基准,将体积分数为75%-90%的汽油与10%-25%的增效乙醇汽油添加剂进行充分溶合后,得到乙醇汽油后,将其作为车用燃料。
本发明具有以下有益效果:
1、现有技术中乙醇汽油中多添加了多种添加剂来保证乙醇汽油的效能,而本发明仅使用乙二醇单丁醚、戊烷和甲基叔丁基醚三种物质作为增效的乙醇汽油添加剂,既保证了乙醇汽油与常规的92号纯汽油具有相当的动力水平,同时耗油量也与92号纯汽油相当,实现了乙醇汽油的改性处理,有助于乙醇汽油的广泛推广。
2、本发明中所使用的乙二醇单丁醚具有优越的溶合作用,能够将本发明中所使用的戊烷、甲基叔丁基醚和乙醇很好的溶合在一起,然后再与汽油溶合。同时由于乙醇热值低,碳5热值高,乙二醇单丁醚将这两种物质很好溶在一起,既解决了环保问题又提高丁热值。虽然碳5热价高,但辛烷值不高,再加入可以同这两种物质能够溶合的甲基叔丁基醚,那就解决辛烷值的问题。这三种物质的结合,有效的解决了环保乙醇汽油热值低的难题。
3、在成本上,本发明中所使用的甲基叔丁基醚价格以及碳5的价格都比汽油低,乙二醇单丁醚的价格略高一些。但由于在本发明中所加的量相对较少,因此与低的乙醇、碳5和甲基叔丁基醚价格差可以补充乙二醇单丁醚的差价,这样总体的价格就不高于汽油价格。解决了人们对乙醇汽油价格的忧虑,进一步助力乙醇汽油推广,实现绿色、节能、环保的理念。
4、本发明所使用添加剂少,与现有技术相比,避免了对汽车发动机及其他重要部件造成的损害。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
本实施例为增效的乙醇汽油的制备方法,步骤如下:
首先对乙醇进行改性处理,按体积百分比将0.5%乙二醇单丁醚、1%戊烷、10%乙醇进行搅拌混合后,加入1%甲基叔丁基醚,再次进行搅拌混合,充分溶合后得到增效的乙醇汽油添加剂,加入87.5%汽油进行充分混合后,得到增效的乙醇汽油。
实施例2
本实施例为增效的乙醇汽油的制备方法,步骤如下:
首先对乙醇进行改性处理,按体积百分比将1%乙二醇单丁醚、3%戊烷、10%乙醇进行搅拌混合后,加入3%甲基叔丁基醚,再次进行搅拌混合,充分溶合后得到增效的乙醇汽油添加剂,加入83%汽油进行充分混合后,得到增效的乙醇汽油。
实施例3
本实施例为增效的乙醇汽油的制备方法,步骤如下:
首先对乙醇进行改性处理,按体积百分比将5%乙二醇单丁醚、5%戊烷、10%乙醇进行搅拌混合后,加入5%甲基叔丁基醚,再次进行搅拌混合,充分溶合后得到增效的乙醇汽油添加剂,加入75%汽油进行充分混合后,得到增效的乙醇汽油。
实施例4
本实施例为增效的乙醇汽油的制备方法,步骤如下:
首先对乙醇进行改性处理,按体积百分比将3%乙二醇单丁醚、5%戊烷、10%乙醇进行搅拌混合后,加入5%甲基叔丁基醚,再次进行搅拌混合,充分溶合后得到增效的乙醇汽油添加剂,加入77%汽油进行充分混合后,得到增效的乙醇汽油。
应用例1
将实施例1制备的乙醇汽油加入至汽车油箱中,进行燃油性能评价。
应用例2
将实施例2制备的乙醇汽油加入至汽车油箱中,进行燃油性能评价。
应用例3
将实施例3制备的乙醇汽油加入至汽车油箱中,进行燃油性能评价。
应用例4
将实施例4制备的乙醇汽油加入至汽车油箱中,进行燃油性能评价。
效果测试
1. 以五菱宏光1.5L S款基本型为测试车辆,在宏光五陵汽车上使用配制好的乙醇汽油,行驶百公里后表明,与纯92号汽油效果、耗油量相等。行驶过程的动力与汽油相当。表1为利用实施例制备的乙醇汽油与纯92号汽油测试数据。以纯92号汽油作为对比,如油耗减少率10.1%是乙醇汽油在纯92号汽油的油耗基础上进一步降低10.1%。本发明中对尾气的排放主要检测了CO、NOx、HC的排放量,并将其与纯92号汽油的排放量进行比较,最终以尾气排放减少率进行表示。
表1 实施例制备的增效的乙醇汽油与纯92号汽油的动力测试
由表1可知,本发明各实施例制备的增效的乙醇汽油在能耗上比纯92号汽油少,节油效果比较明显。在尾气排放上,本发明各应用例使用的由实施例制备的增效的乙醇汽油添加剂改性的乙醇汽油在尾气排放上得到大幅的减排,减幅最大为63%。对使用增效的乙醇汽油的车辆的动力进行了研究,研究发现,与使用纯92号汽油的车辆的动力相比,本发明动力上略有减幅,但仍处于与纯92号汽油相当的水平。对使用增效的乙醇汽油的车辆的热值和辛烷值进行了研究,研究发现,与使用纯92号汽油的车辆的热值相比,本发明能达到纯92号汽油相同的水平,甚至更高。在辛烷值上,乙醇汽油辛烷值较纯92号汽油辛烷值高,克服了采用单一试剂容易产生的燃烧不充分的问题。
2.对乙醇汽油进行技术指标的测定,按照GB18351-2017车用乙醇汽油(E10)规定的测试方法进行测试,如下表2所示。
表2 实施例制备的增效的乙醇汽油技术指标的测定
根据表2的试验数据可知,本发明制备的增效的乙醇汽油的技术指标在国家标准要求的范围内。将本发明制备的增效的乙醇汽油添加剂与汽油进行混合制作为混合燃料后,可以改善燃料的燃烧性能,减少耗油量;降低尾气污染物的排放量,提高了汽油的辛烷值,增加了汽油的抗爆性能,同时提高了汽油的稳定性和抗氧化性,实现了节能环保的目的。
以上所述仅为本发明的较佳实施例而已,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 (7)
1.一种增效的乙醇汽油,包括汽油和增效的乙醇汽油添加剂,其特征在于:以增效的乙醇汽油的总体积为基准,所述的增效的乙醇汽油添加剂按体积百分比包括0.5-5%乙二醇单丁醚、1-5%戊烷、10%乙醇和1-5%甲基叔丁基醚;所述的增效的乙醇汽油的制备方法为,将乙二醇单丁醚与戊烷和乙醇进行搅拌混合后,再加入甲基叔丁基醚进行搅拌混合,得到增效的乙醇汽油添加剂,然后再与汽油充分混合,即得增效的乙醇汽油。
2.根据权利要求1所述的增效的乙醇汽油,其特征在于:所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、2-5%戊烷、10%乙醇和2-5%甲基叔丁基醚。
3.根据权利要求2所述的增效的乙醇汽油,其特征在于:所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、3-5%戊烷、10%乙醇和3-5%甲基叔丁基醚。
4.根据权利要求3所述的增效的乙醇汽油,其特征在于:所述的增效的乙醇汽油添加剂按体积百分比包括1-5%乙二醇单丁醚、5%戊烷、10%乙醇和5%甲基叔丁基醚。
5.根据权利要求4所述的增效的乙醇汽油,其特征在于:所述的增效的乙醇汽油添加剂按体积百分比包括5%乙二醇单丁醚、5%戊烷、10%乙醇和5%甲基叔丁基醚。
6.权利要求1-5任一项所述的方法制备的增效的乙醇汽油在车用燃料中的应用。
7.根据权利要求6所述的应用,其特征在于:以增效的乙醇汽油的总体积为基准,将体积分数为75%-90%的汽油与10%-25%的增效的乙醇汽油添加剂进行充分溶合后,得到乙醇汽油后,将其作为车用燃料。
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