共查询到20条相似文献,搜索用时 946 毫秒
1.
柴油低温流动改进剂在油品调和上的应用 总被引:1,自引:0,他引:1
对几种柴油低温流动改进剂进行了筛选,并对降凝降滤效果较好的D型柴油低温流动改进剂进行了工业应用试验。结果表明:柴油低温流动改进剂不仅能降低柴油的凝固点,还能降低柴油的冷滤点。由于改善了柴油的低温流动性,可以拓宽柴油馏程,提高柴油的收率,产生较好的经济效益。 相似文献
2.
在分析中国石油辽化炼油厂0^#柴油的烃族组成、蜡碳分布的基础上,研制出一种柴油低温流动性改进剂。实验结果表明,这种柴油低温流动性改进剂能十分有效地提高中国石油辽化炼油厂0^#柴油的低温使用性能。并在实验室评价了LDY柴油降凝剂对几种0^#柴油的低温流动性能的改进效果。 相似文献
3.
柴油低温流动改进剂的研究 总被引:1,自引:0,他引:1
介绍了一种新研制的复配型柴油低温流动改进剂,并与公司目前使用的TS型低温流动改进剂进行了比较。结果表明,复配型柴油低温流动改进剂对不同批次、不同组成的柴油具有较好的感受性,当加剂量为400mg/kg,柴油冷滤点的降低值都在10个单位以上,好于目前使用的TS改进剂。同时考察了改进剂对柴油质量的影响,用复配剂由0^#柴油调成的-10^#柴油产品完全符合轻柴油的质量指标。 相似文献
4.
5.
6.
生物柴油低温流动改进剂复配研究 总被引:3,自引:0,他引:3
采用碱催化法制备菜籽油生物柴油和棕榈油生物柴油,对其主要品质指标进行分析;考察了添加不同的柴油低温流动改进剂及其复配物对生物柴油低温流动性能的影响。结果表明,柴油低温流动改进剂能够改善生物柴油低温流动性能;将其进行复配后,能表现出协同效应,取得更好的降滤效果,尤其能使饱和脂肪酸甲酯含量高的棕榈油生物柴油冷滤点降低8℃;不同生物柴油对柴油低温流动改进剂或其复配物感受性存在较大差异,不饱和脂肪酸甲酯含量高,且脂肪酸甲酯种类较多、分布较广的菜籽油生物柴油对单一低温流动改进剂感受性好,而饱和脂肪酸甲酯含量高,且脂肪酸甲酯种类分布较集中的棕榈油生物柴油对复配物感受性好。 相似文献
7.
黑龙江省化工研究院研制的T-1806柴油低温流动性能改进剂通过了中石化的成果鉴定。此产品在大庆炼化公司做了工业放大试验并对国内6家炼厂的柴油做了对比实验。结果表明,T-1806柴油低温流动性能改进剂具有很好的降凝降滤效果,冷凝点降低7~20℃,冷滤点降低7~10℃。同时,具有较好的广普性。 相似文献
8.
9.
对比分析了几种比较常见的柴油低溫流动改进剂,并挑选了效果相对出色的D型柴油低溫流动改进剂进行了应用试验。试验结果显示:柴油低溫流动改进剂可以有效降低柴油冷凝点,同时也能改善其凝固性能。柴油低温流动性改进剂在目前柴油生产中使用的比较多,对炼油厂柴油增产,生产灵活性的提高和经济效益的提高有着十分显著的作用,结合陕北轻质原油在油品调和中对柴油低温流动改进剂的使用谈谈柴油低溫流动改进剂在油品调和中的应用。 相似文献
10.
11.
AMSV-a柴油低温流动改进剂的研制 总被引:4,自引:0,他引:4
介绍了柴油低温流动改进剂AMSV-a的合成和降凝助滤性能。该剂是以丙烯酸酯、马来酸酐、苯乙烯、醋酸乙烯酯(量比为4∶1∶0 5∶1)为原料,以甲苯为溶剂,以过氧化苯甲酰(用量5 0g/mol共聚单体)为引发剂,恒温80℃聚合6h,得四元共聚物(AMSV),再以对甲苯磺酸为催化剂(用量20g/mol共聚单体),用高碳胺〔n(酐)∶n(胺)=1∶1 5〕进行胺解制得。该剂对大庆-10#柴油的纯降凝度可达25℃,冷滤点降低可达16℃;对胜利0#柴油的纯降凝度可达23℃,冷滤点降低可达14℃;对东明5#柴油的纯降凝度可达20℃,冷滤点降低可达11℃;对濮阳10#柴油的纯降凝度可达17℃,冷滤点降低可达9℃。 相似文献
12.
柴油低温流动改进剂的合成及性能评价 总被引:1,自引:0,他引:1
介绍了在甲苯溶液中将甲基丙烯酸酯-马来酸酐二元共聚物用高级脂肪醇、聚乙二醇酯化,得到一系列新聚合物,通过对长庆石化分公司混合柴油的冷滤点的测试,改性后的二元共聚物可降低混合柴油的冷滤点3-4℃;利用多种低温流动改进剂的协同作用,探讨了合成主剂与不同的降凝剂和蜡晶分散剂复配效果;用差示扫描量热法(DSC)对加剂柴油和空白柴油在降温过程中的相变情况进行了研究,实验结果表明加剂后延缓了柴油中石蜡的结晶速度,使石蜡结晶温度降低,改善了柴油的低温流动性。 相似文献
13.
14.
EsMOVS柴油降凝剂的研制 总被引:9,自引:0,他引:9
对柴油降凝剂EsMOVS的合成、用途、使用条件、影响因素等作了阐述。此降凝剂对抚顺石油二厂-10#柴油的纯降凝度是18℃,冷滤点纯降低度是9℃。对其它柴油也有一定的降凝助滤效果。 相似文献
15.
Biodiesel production from pomace oil and improvement of its properties with synthetic manganese additive 总被引:1,自引:0,他引:1
Renewable energy sources are attracting more attention due to lower cost and lower pollution relative to fossil fuels. The aim of this experimental work is the production of renewable and clean methyl ester from pomace oil as an alternative fuel. This oil was obtained from pomace which is the waste of olive oil plants. Optimum producing conditions were determined experimentally. The maximum yield was obtained at 30% of methanol/oil ratio, 60 °C temperature for 60 min with NaOH catalyst. The properties of the biodiesel thus obtained were compared with diesel fuel requirements. An organic based Manganese additive improved the biodiesel properties. Doping the fuel at a ratio of 12 μmol/l oil methyl ester led to a 20.37% decrease in viscosity, 7 °C fall in the flash point and reduced the pour point from 0 °C to −15 °C. This blend of pomace oil methyl ester-diesel fuel with manganese additive was tested in a direct injection diesel engine. The maximum effect of the new fuel blend and diesel fuel on engine performance was obtained at 1400 rpm. 相似文献
16.
Cloud and pour points in fuel blends 总被引:1,自引:0,他引:1
17.
Improving the low-temperature properties of alternative diesel fuels: Vegetable oil-derived methyl esters 总被引:14,自引:0,他引:14
R. O. Dunn M. W. Shockley M. O. Bagby 《Journal of the American Oil Chemists' Society》1996,73(12):1719-1728
This work explores near-term approaches for improving the low-temperature properties of triglyceride oil-derived fuels for
direct-injection compression-ignition (diesel) engines. Methyl esters from transesterified soybean oil were evaluated as a
neat fuel and in blends with petroleum middle distillates. Winterization showed that the cloud point (CP) of methyl soyate
may be reduced to −16°C. Twelve cold-flow additives marketed for distillates were tested by standard petroleum methodologies,
including CP, pour point (PP), kinematic viscosity, cold filter plugging point (CFPP), and low-temperature flow test (LTFT).
Results showed that additive treatment significantly improves the PP of distillate/methyl ester blends; however, additives
do not greatly affect CP or viscosity. Both CFPP and LTFT were nearly linear functions of CP, a result that compares well
with earlier studies with untreated distillate/methyl ester blends. In particular, additives proved capable of reducing LTFT
of neart methyl esters by 5–6°C. This work supports earlier research on the low-temperature properties; that is, approaches
for improving the cold flow of methyl ester-based diesel fuels should continue to focus on reducing CP. 相似文献
18.
19.
The European quality standards for diesel fuel suggest that its characteristics should correspond to the special design of diesel engines and to their operating cycle after long-term fuel storage as well. Changes in the properties of diesel fuel with time under different conditions of storage of fuel containers were analyzed in this study. Three-year-long monitoring revealed that only the flash point of the diesel underwent significant changes, becoming below the limiting minimum temperature. The introduction of an appropriate additive elevates the flash point to the required level, thereby making it eligible for service again. 相似文献