CN107974311B - 一种汽油辛烷值促进剂 - Google Patents
一种汽油辛烷值促进剂 Download PDFInfo
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Abstract
本发明公开了一种汽油辛烷值促进剂,包括按重量份计的50~85份抗爆剂、0.01~5份除胶质剂、1~30份助燃剂、0.01~3份稳定剂、0.1~5份酸碱调节剂的原料制成。本发明的汽油辛烷值促进剂为纯有机类汽油辛烷值促进剂,无污染,完全无灰;添加量少,辛烷值提升率明显;不易结晶凝固,与汽油互溶性好,耐氧化不分解,安全性高;使用便捷,节油降污,可减少发动机燃油系统胶质沉积,减轻发动机磨损,适应性强,具有良好的应用前景。
Description
技术领域
本发明属于有机化工领域,特别涉及一种汽油辛烷值促进剂。
背景技术
近年来,随着国内外环境问题的凸显,世界各国开始严格执行更加严格的汽油标准,提高汽油品质,解决石化燃料的使用带来的环境污染问题。在人们使用过的许多金属和非金属辛烷值促进剂中,金属抗爆剂的使用效果极佳且添加量小。但其最大的缺点是排放重金属,对环境有极大危害,使得它在使用中存在争议,长期使用也势必造成金属积累,引起火花塞失灵、导致排气门寿命缩短等缺陷。为此,人们又投入大量精力研究纯有机化合物作为辛烷值促进剂,如甲基叔丁基醚(MTBE)等,其具有较好的抗爆性,但其氧含量较高,在汽油调和过程中添加量较大(一般大于10%),辛烷值提升效果不佳;同时其较易渗透到地下水源,而造成水体污染,故其使用受到一定的限制和制约。
因此,研发无污染、生产工艺稳定、安全性高,辛烷值提升率明显的纯有机辛烷值促进剂是目前广受关注的技术问题。
发明内容
本发明的目的在于克服现有技术的缺点与不足,提供一种汽油辛烷值促进剂,采用含有能捕捉汽油在燃烧过程中产生的活性自由基的一类烷基苯基化合物抗爆剂、除胶质剂、助燃剂、稳定剂以及酸碱调节剂为原料,得到一种可显著提升汽油辛烷值的汽油辛烷值促进剂。
本发明的目的通过下述技术方案实现:
一种汽油辛烷值促进剂,由包含如下按重量份计的原料制成:
所述的抗爆剂为具有式Ⅰ结构且常温下为液态的苯基烷基化合物中的一种或至少两种,
其中,R为C1~C20的烷基或烷氧基,X为氨基或羟基。
所述的抗爆剂优选为具有如下结构的苯基烷基化合物中的一种或至少两种:
所述的除胶质剂优选为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、乙酰胺、甲酰胺、N-甲基己内酰胺、N,N-二甲基丙烯基脲、1,3-二甲基-2-咪唑啉酮、N-甲基吡咯烷酮、N-环己基吡咯烷酮、2-吡咯烷酮、1-甲基咪唑或2-甲基咪唑中的一种或至少两种与聚乙二醇200、聚乙二醇300、聚乙二醇400或聚乙二醇600中的一种或至少两种的组合物。
所述的助燃剂优选为乙醇、异丙醇、丁醇、异丁醇、叔丁醇、戊醇、异戊醇、正己醇、环己醇、苄醇、正辛醇、异辛醇、正癸醇、十二醇或十六醇中的一种或至少两种。
所述的稳定剂优选为苯酚、2,6-二叔丁基对甲酚、2,6-二甲基苯酚、癸二酸双1,2,2,6,6-五甲基哌啶醇酯、双(2,2,6,6-四甲基-4-哌啶基)癸二酸酯或丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯中的一种或至少两种。
所述酸碱调节剂优选为二乙基甲苯甲酰胺、乙醇胺、丙醇胺、丁醇胺、乙酸、丁酸、异丁酸、戊酸、异戊酸、己酸、辛酸或异辛酸中的一种或至少两种。
所述的汽油辛烷值促进剂通过捕捉汽油在燃烧过程中产生的活性自由基,通过猝灭自由基,以降低汽油的瞬间燃烧速率,来提高汽油的辛烷值,从而提高其抗爆性能。
本发明相对于现有技术具有如下的优点及效果:
1、本发明的汽油辛烷值促进剂为纯有机类汽油辛烷值促进剂,完全无灰类促进剂,不易结晶凝固、与汽油互溶性好、耐氧化不分解,安全性高,辛烷值提升率明显。
2、本发明的汽油辛烷值促进剂添加量小,辛烷值提高效果明显;同时,具有累积叠加线性效果,其辛烷值提升率随其添加量(0.5~5%区间内)呈线性增长。
3、该类汽油辛烷值促进剂具有使用便捷、节油降污、减少发动机燃油系统胶质沉积、减轻发动机磨损的作用。
具体实施方式
下面结合实施例对本发明作进一步详细的描述,但本发明的实施方式不限于此。
实施例1
将3重量份乙醇和5重量份丁醇,0.1重量份癸二酸双1,2,2,6,6-五甲基哌啶醇酯、1重量份乙酰胺和2重量份聚乙二醇400加入带搅拌的混合釜中,在氮气保护下,于室温(25℃)下开始缓慢加入85重量份邻乙氧基苯酚,继续搅拌10min得透明混合液,检测其pH值,并在搅拌下加入0.1重量份二乙基甲苯甲酰胺,调节混合液pH值至6.9,继续搅拌10min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为5℃,且25℃不避光保存15天不变色。
将本实施例制得的汽油辛烷值促进剂,按1%(w/w)的量添加到基础油(研究法辛烷值RON=89)中,根据国标GB/T5487-1995对所得到的成品油的研究法辛烷值进行测定,所得成品油的RON=91.6,增加了2.6个辛烷值;将其2%的量添加到基础油(RON=89)中,所得成品油的RON=94.2,增加了5.2个辛烷值。
实施例2
将6重量份丁醇和重量份10份环己醇,1重量份双(2,2,6,6-四甲基-4-哌啶基)癸二酸酯、0.1重量份甲酰胺和0.1重量份聚乙二醇200加入带搅拌的混合釜中,在氮气保护下,于30℃下开始缓慢加入68重量份邻甲氧基苯酚和12重量份对氨基苯乙醚,继续搅拌20min得透明混合液,检测其pH值,并在搅拌下加入0.2重量份乙醇胺,调节混合液pH值至6.9,继续搅拌10min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为0℃,且25℃不避光保存15天不变色。
将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=92.2,增加了2.2个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=94.4,增加了4.4个辛烷值。
实施例3
将30重量份异丁醇,0.01重量份2,6-二甲基苯酚、2重量份1,3-二甲基-2-咪唑啉酮和0.1重量份聚乙二醇300加入带搅拌的混合釜中,在氮气保护下,于40℃下开始缓慢加入60重量份邻十二烷基苯酚和25重量份对氨基苯甲醚,继续搅拌20min得透明混合液,检测其pH值,并在搅拌下加入3重量份丁醇胺,调节混合液pH值至7.0,继续搅拌20min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为-6℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=92.8,增加了2.8个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=95.5,增加了5.5个辛烷值。
实施例4
将5重量份异丙醇和10重量份异辛醇,0.3重量份丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯、4重量份N-环己基吡咯烷酮和0.05重量份聚乙二醇600加入带搅拌的混合釜中,在氮气保护下,于50℃下开始缓慢加入85重量份间异丙基苯酚,继续搅拌20min得透明混合液,检测其pH值,并在搅拌下加入5重量份丙醇胺,调节混合液pH值至7.0,继续搅拌20min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为3℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=91.9,增加了1.9个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=93.8,增加了3.8个辛烷值。
实施例5
将5重量份异丙醇和22重量份苄醇,1重量份2,6-二叔丁基对甲酚、3重量份N-甲基吡咯烷酮和0.1重量份聚乙二醇300加入带搅拌的混合釜中,在氮气保护下,于30℃下开始缓慢加入75重量份邻叔丁基醚苯酚,继续搅拌20min得透明混合液,检测其pH值,并在搅拌下加入1.5重量份二乙基甲苯甲酰胺,调节混合液pH值至6.9,继续搅拌20min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为-8℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=92.1,增加了2.1个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=94.2,增加了4.2个辛烷值。
实施例6
将8重量份环己醇和20重量份苄醇,2重量份苯酚、1重量份N,N-二甲基丙烯基脲和0.3重量份聚乙二醇400加入带搅拌的混合釜中,在氮气保护下,于室温下开始缓慢加入50重量份异辛基醚苯酚和20重量份对氨基苯基异丙基醚,继续搅拌10min得透明混合液,检测其pH值,并在搅拌下加入2重量份二乙基甲苯甲酰胺,调节混合液pH值至7.0,继续搅拌20min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为-1℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=92.9,增加了2.9个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=95.7,增加了5.7个辛烷值。
实施例7
将5重量份十二醇和15重量份异戊醇,1重量份苯酚、0.1重量份1-甲基咪唑和0.4重量份聚乙二醇200加入带搅拌的混合釜中,在氮气保护下,于室温下开始缓慢加入75重量份对氨基苯基异丙基醚,继续搅拌10min得透明混合液,检测其pH值,并在搅拌下加入0.1重量份异辛酸,调节混合液pH值至7.0,继续搅拌10min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为-12℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=93.1,增加了3.1个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=96.2,增加了6.2个辛烷值。
实施例8
将25重量份异戊醇,0.02重量份癸二酸双1,2,2,6,6-五甲基哌啶醇酯、0.2重量份2-甲基咪唑和0.1重量份聚乙二醇600加入带搅拌的混合釜中,在氮气保护下,于室温下开始缓慢加入78重量份间甲酚和5重量份对氨基苯乙醚,继续搅拌30min得透明混合液,检测其pH值,并在搅拌下加入0.1重量份乙醇胺,调节混合液pH值至7.0,继续搅拌10min,待其降至室温后,即得汽油辛烷值促进剂成品,其凝固点约为-2℃,且25℃不避光保存15天不变色。将其1%的量添加到基础油(RON=90)中,根据国标GB/T5487-1995测得所得成品油的RON=91.7,增加了1.7个辛烷值;将其2%的量添加到基础油(RON=90)中,所得成品油的RON=93.4,增加了3.4个辛烷值。
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。
Claims (7)
1.一种汽油辛烷值促进剂,其特征在于,由包含如下按重量份计的原料制成:
所述的抗爆剂为具有式Ⅰ结构且常温下为液态的苯基烷基化合物中的一种或至少两种,
其中,R为C1~C20的烷基或烷氧基,X为羟基;
所述的除胶质剂为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、乙酰胺、甲酰胺、N-甲基己内酰胺、N,N-二甲基丙烯基脲、1,3-二甲基-2-咪唑啉酮、N-甲基吡咯烷酮、N-环己基吡咯烷酮、2-吡咯烷酮、1-甲基咪唑或2-甲基咪唑中的一种或至少两种与聚乙二醇200、聚乙二醇300、聚乙二醇400或聚乙二醇600中的一种或至少两种的组合物;
所述的稳定剂为苯酚、2,6-二叔丁基对甲酚、2,6-二甲基苯酚、癸二酸双1,2,2,6,6-五甲基哌啶醇酯、双(2,2,6,6-四甲基-4-哌啶基)癸二酸酯或丁二酸(4-羟基-2,2,6,6-四甲基-1-哌啶乙醇)酯中的一种或至少两种。
3.根据权利要求1所述的汽油辛烷值促进剂,其特征在于:
所述的助燃剂为乙醇、异丙醇、丁醇、戊醇、正己醇、环己醇、苄醇、正辛醇、异辛醇、正癸醇、十二醇或十六醇中的一种或至少两种。
4.根据权利要求1所述的汽油辛烷值促进剂,其特征在于:
所述的助燃剂为异丁醇、叔丁醇或异戊醇中的一种或至少两种。
5.根据权利要求1所述的汽油辛烷值促进剂,其特征在于:
所述酸碱调节剂为二乙基甲苯甲酰胺、乙醇胺、丙醇胺、丁醇胺、乙酸、丁酸、戊酸、己酸或辛酸中的一种或至少两种。
6.根据权利要求1所述的汽油辛烷值促进剂,其特征在于:
所述酸碱调节剂为异丁酸、异戊酸或异辛酸中的一种或至少两种。
7.权利要求1~6任一项所述的汽油辛烷值促进剂,其特征在于:
所述的汽油辛烷值促进剂通过捕捉汽油在燃烧过程中产生的活性自由基来提高汽油的辛烷值。
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