棉籽油基生物柴油铜片腐蚀特性  

Corrosion performance on copper in biodiesel from cottonseed oil

作　　者：陈金思[1] 胡恩柱[1] 汪向阳[1] 徐玉福[1] 胡献国[1] 潘丽军[2] 姜绍通[2] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]合肥工业大学生物与食品工程学院,合肥230009

出　　处：《农业工程学报》2011年第11期111-115,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家科技支撑计划项目(批准号:2007BAD34B03)

摘　　要：参照国家标准《发动机燃料铜片腐蚀试验方法》(GB/T378-1990),在温度为25℃和50℃条件下,研究棉籽油基生物柴油铜片腐蚀特性,同时考察了棉籽油甲酯和乙酯理化性质的变化,并与0#柴油作了对比。结果表明:在25和50℃条件下,腐蚀试验历时2个月,棉籽油甲酯、乙酯对铜片具有不同的腐蚀现象,且棉籽油甲酯比乙酯的腐蚀性更大。在温度25℃条件下,棉籽油甲酯的铜片腐蚀率达到0.0926cm/d,腐蚀后棉籽油甲酯的酸值、过氧化值、运动黏度分别提高10.4、1.44、1.13倍;温度升高到50℃时,棉籽油甲酯的铜片腐蚀率达到0.4115cm/d,腐蚀后棉籽油甲酯的酸值、过氧化值、运动黏度分别增加12.8、2.16、1.13倍。温度升高,铜片腐蚀加剧,油品性质变化增大,乙酯生物柴油也具有类似的变化趋势,而0#柴油对铜片几乎无腐蚀。铜片的腐蚀是由生物柴油变质导致的。该研究可为棉籽生物柴油的工业化应用提供腐蚀数据。Based on national standard method of petroleum products copper corrosion test（GB/T5096-1990）,the corrosion character on copper in cottonseed oil methyl ester（CSOME） and cottonseed oil ethyl ester（CSOEE） were detected at 25℃ and 50℃.At the same time,the physical-chemical performances of the two samples were investigated and compared to diesel before and after corrosion.The results showed that variations of the corrosion phenomenon on copper which immersed in the two samples for two months at the 25℃and 50℃.The corrosion property of CSOME was changed seriously.Under the condition of 25℃,the copper corrosion rate was 0.0926 cm/d,and the acid value,the peroxide value,the kinetic viscosity increased by 10.4,1.44,1.13 times,respectively.Copper corrosion rate was 0.4115 cm/d and acid value,peroxide value,kinetic viscosity increased by 12.8,2.16,1.35 times respectively with temperature rising up to 50℃.The variations of corrosion rate and properties of oils changed seriously with the temperature increasing.The corrosion character of CSOEE had the similar to the CSOME.The changes of diesel was slightly.The copper corrosion was ascribed to degradation of biodiesel.Data of copper corrosion could contribute to industrial application of CSOME or CSOEE.

关 键 词：棉籽油 生物柴油 铜 腐蚀 0#柴油 

分 类 号：TK63[动力工程及工程热物理—生物能]