CN110846144B - 柴油颗粒捕集器灰分清洗液及其制备方法 - Google Patents

柴油颗粒捕集器灰分清洗液及其制备方法 Download PDF

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CN110846144B
CN110846144B CN201911100219.8A CN201911100219A CN110846144B CN 110846144 B CN110846144 B CN 110846144B CN 201911100219 A CN201911100219 A CN 201911100219A CN 110846144 B CN110846144 B CN 110846144B
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吴章辉
姜杨
赵鹏
庞磊
何大礼
钟小华
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Dongfeng Trucks Co ltd
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Abstract

本发明公开了一种柴油颗粒捕集器灰分清洗液及其制备方法,该灰分清洗液按质量份数计由如下原料组成:表面活性剂助剂1~10份、表面活性剂5~15份、灰分清除剂5~15份、螯合剂1~10份、缓蚀剂0.05~0.15份、消泡剂0.05~0.15份、分散剂0.05~0.15份,余量为水。本发明提供的清洗液可快速溶解DPF灰分中的金属氧化物、硫酸盐、磷酸盐、硅酸盐和氯化物,使其反应形成溶于水的化合物,被水溶液所带走并排出,经反应形成的化合物具有表面活性,有助于对碳烟颗粒的溶解清洗。

Description

柴油颗粒捕集器灰分清洗液及其制备方法
技术领域
本发明涉及尾气排放装置颗粒捕集器清灰的技术领域,具体涉及一种柴油颗粒捕集器灰分清洗液及其制备方法。
背景技术
我国正式进入“国六”排放时代,国六除了对NOx和PM排放进行了更严格的规定,还规定了CO、HC、NH3等排放限值,同时也增加了对PM(颗粒物)排放的监控,这对发动机的尾气处理技术提出了更高的要求。国六对PM(颗粒物)的限值相对于国五严格了不少,通过优化标定、进排气相位等手段已经无法让原机PM排放在满足动力性的同时还满足法规要求,因此只能通过加装颗粒捕集器(DPF)后处理来解决。
柴油颗粒捕集器DPF成为国六后处理必备的组件。DPF是一种多孔的蜂窝结构,在使用过程中,碳烟颗粒和灰分会在DPF孔道内逐渐累积,进而导致排气背压升高,诱发DPF再生,绝大部分碳烟颗粒在DPF再生环节可以被烧掉,但是来自润滑油中的灰分会在DPF孔道中逐渐累积,灰分无法被烧掉,因此会在DPF中越积越多,灰分增多会导致发动机动力性和经济性下降,从而影响车辆的使用性能。在累积到一定程度后,必须进行DPF清灰操作。现有的清灰解决方案是,采用高压空气进行吹扫。空气吹扫清灰的主要有以下缺点:(1)清灰效果差,缩短DPF的清灰里程;(2)DPF尺寸不能过大,不适合中重型商用车清灰;(3)需要预加热,不节能;(4)设备价格昂贵,保养成本高。
发明内容
本发明的目的在于克服上述背景技术的不足,提供一种柴油颗粒捕集器灰分清洗液及其制备方法,该柴油颗粒捕集器灰分清洗液清灰效果好,对铂、钯、铑、铈等催化剂无损害,对氧化铝、不锈钢、碳化硅和菁青石等载体不反应,具有优异应用安全性。
为实现上述目的,本发明提供的一种柴油颗粒捕集器灰分清洗液,其特征在于:按质量份数计由如下原料组成:表面活性剂助剂1~10份、表面活性剂5~15份、灰分清除剂5~15份、螯合剂1~10份、缓蚀剂0.05~0.15份、消泡剂0.05~0.15份、分散剂0.05~0.15份,余量为水。
作为优选实施方式地,所述表面活性剂助剂选自正丁醇或正戊醇。
作为优选实施方式地,所述表面活性剂按质量份数计由20~40份十二烷基硫酸钠、10~30份月桂醇硫酸钠、40~60份异丙醇酰胺C13复配而成。
作为优选实施方式地,所述灰分清除剂按质量份数计由5~15份羟基乙叉二膦酸、45~55份乙酸、15~25份酒石酸、10~20份乙二醇、0~10份十二烷基苯磺酸钠复配而成。
作为优选实施方式地,所述螯合剂按质量份数计由40~60份EDTA-2Na、15~35份乙二胺二邻苯基乙酸钠、15~35份马来酸丙烯酸共聚物复配而成。
作为优选实施方式地,所述缓蚀剂选自膦羧酸、苯并三唑、磺化木质素、油酸二乙醇胺、聚环氧琥珀酸、三乙醇胺硼酸酯中的一种。
作为优选实施方式地,所述消泡剂选自聚氧乙烯聚氧丙烯季戊四醇醚、聚氧乙烯聚氧丙醇胺醚、聚氧丙烯甘油醚或聚氧丙烯聚氧乙烯甘油醚中的一种。
作为优选实施方式地,所述分散剂为水解聚马来酸酐。
本发明还提供一种上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至50℃~70℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至20℃~25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
与现有技术相比,本发明具有如下优点:
其一,本发明提供的清洗液可快速溶解DPF灰分中的金属氧化物、硫酸盐、磷酸盐、硅酸盐和氯化物,使其反应形成溶于水的化合物,被水溶液所带走并排出,经反应形成的化合物具有表面活性,有助于对碳烟颗粒的溶解清洗。
其二,本发明提供的清洗液清灰效果好,对铂、钯、铑、铈等催化剂无损害,对氧化铝、不锈钢、碳化硅和菁青石等载体不反应,具有优异应用安全性。
其三,本发明所涉及的原料成本较低,成品具有价格优势,制备方法简单,设备投入低,节能环保。
具体实施方式
下面结合实施案例详细说明本发明的实施情况,但它们并不构成对本发明的限定,仅作举例而已。同时通过说明本发明的优点将变得更加清楚和容易理解。
实施例1
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000031
Figure BDA0002269630380000041
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至50℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至20℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例1清洗前后DPF质量变化率为2.5%。
实施例2
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000042
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至70℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例2清洗前后DPF质量变化率为3.1%。
实施例3
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000051
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至60℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例3清洗前后DPF质量变化率为2.8%。
实施例4
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000061
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至60℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例4清洗前后DPF质量变化率为3.0%。
实施例5
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000071
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至60℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例5清洗前后DPF质量变化率为1.5%。
实施例6
本实施例提供一种柴油颗粒捕集器灰分清洗液,按质量份数计由如下原料组成:
Figure BDA0002269630380000081
上述的柴油颗粒捕集器灰分清洗液的制备方法,包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至60℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
采用上述清洗液清洗DPF,以清洗前后DPF质量变化率作为评价标准,用实施例6清洗前后DPF质量变化率为1.2%。
以上,仅为本发明的具体实施方式,应当指出,任何熟悉本领域的技术人员在本发明所揭示的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内,其余未详细说明的为现有技术。

Claims (5)

1.一种柴油颗粒捕集器灰分清洗液,其特征在于:按质量份数计由如下原料组成:表面活性剂助剂1~10份、表面活性剂5~15份、灰分清除剂5~15份、螯合剂1~10份、缓蚀剂0.05~0.15份、消泡剂0.05~0.15份、分散剂0.05~0.15份,余量为水;
所述表面活性剂按质量份数计由20~40份十二烷基硫酸钠、10~30份月桂醇硫酸钠、40~60份异丙醇酰胺C13复配而成;
所述灰分清除剂按质量份数计由5~15份羟基乙叉二膦酸、45~55份乙酸、15~25份酒石酸、10~20份乙二醇、0~10份十二烷基苯磺酸钠复配而成;
所述螯合剂按质量份数计由40~60份EDTA-2Na、15~35份乙二胺二邻苯基乙酸钠、15~35份马来酸丙烯酸共聚物复配而成;
所述表面活性剂助剂选自正丁醇或正戊醇。
2.根据权利要求1所述的柴油颗粒捕集器灰分清洗液,其特征在于:所述缓蚀剂选自膦羧酸、苯并三唑、磺化木质素、油酸二乙醇胺、聚环氧琥珀酸、三乙醇胺硼酸酯中的一种。
3.根据权利要求1所述的柴油颗粒捕集器灰分清洗液,其特征在于:所述消泡剂选自聚氧乙烯聚氧丙烯季戊四醇醚、聚氧乙烯聚氧丙醇胺醚、聚氧丙烯甘油醚或聚氧丙烯聚氧乙烯甘油醚中的一种。
4.根据权利要求1所述的柴油颗粒捕集器灰分清洗液,其特征在于:所述分散剂为水解聚马来酸酐。
5.一种权利要求1~4任一项所述的柴油颗粒捕集器灰分清洗液的制备方法,其特征在于:包括如下步骤:
1)按质量份数配比将表面活性剂助剂、表面活性剂、灰分清除剂、水加入反应器中加热至50℃~70℃;
2)向反应器中加入螯合剂,并搅拌均匀;
3)降温至20℃~25℃加入缓蚀剂、消泡剂、分散剂,并搅拌均匀,即可。
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