燃料油与原油混合荧光特性的变化研究

发布时间：2018-01-06 07:26

本文关键词：燃料油与原油混合荧光特性的变化研究　出处：《大连海事大学》2016年硕士论文　论文类型：学位论文

【摘要】：海面溢油会给海洋环境带来严重的威胁。怎样快速、准确的确定溢油源以采取有效的治理措施,是当前溢油研究的重要任务。目前,溢油鉴别多以单油为主,对燃料油与原油混合油指纹特征的研究较少。本研究分析了燃料油与原油混合荧光特性的变化规律,以期为海上溢油的油指纹特征提供技术支持。本研究采用同步扫描荧光光谱法检测大庆、科威特、迪拜、阿曼及印尼五种原油和两种燃料油的荧光特征。根据单油的荧光特征进行聚类,确定燃1号与大庆、科威特,燃2号与迪拜、阿曼、印尼混合的五组样品。在3个特征波长(304±2nm、 336±2nm、388±2nm)下,分析燃料油与原油混合荧光特性与混合比例的关系。通过30天的风化实验,分析风化作用对燃料油与原油混合荧光特性的影响。燃料油1号与原油混合：燃1号与大庆、科威特的混合荧光强度值受混合比例的影响显著。混合荧光强度值随着燃料油1号所占比例的增加而增强,即随着荧光强度值较强的组分所占比例的增加而增强。在336nm波长处两者的线性关系最好,相关系数R2分别为0.9871、0.9828。通过30天风化实验得出：前10天,随着轻质组分挥发混合荧光强度值略有增大后降低的变化趋势,10天后基本维持稳定,三十天的短期风化对混油的荧光特性影响不大。另外,考察了季节对混合荧光特性的影响,夏、冬两期风化后混油的荧光强度值相差不大,均随着燃料油1号所占比例的增加而增强,与未风化时混油的荧光特性变化一致。燃料油2号与原油混合：燃2号与迪拜、阿曼及印尼的混合荧光强度值受混合比例的影响显著,随着荧光强度值强的组分所占比例的增加而增强。在388nm波长处两者的线性关系最好,相关系数R2分别为0.9956、0.9980、0.9801。通过30天风化可知：前13天,随着轻质组分的挥发混合荧光强度值略有变化,13天后基本维持稳定。三十天风化期间混合荧光强度值波动范围较小,可认为基本不受风化作用的影响。风化后油样的混合荧光强度值随着荧光强度值较强的组分所占比例的增加而增强,与未风化时荧光特性变化一致。
[Abstract]:Oil spill on the sea will bring serious threat to marine environment. How to determine the source of oil spill quickly and accurately in order to take effective control measures is an important task of current oil spill research. At present, single oil is the main source of oil spill identification. The fingerprint characteristics of fuel oil and crude oil mixture are less studied. The variation of fluorescence characteristics of fuel oil and crude oil mixture is analyzed in this paper. In order to provide technical support for oil fingerprint characteristics of offshore oil spill, this study uses synchronous scanning fluorescence spectrometry to detect Daqing, Kuwait and Dubai. The fluorescence characteristics of five kinds of crude oil and two kinds of fuel oil in Oman and Indonesia. According to the fluorescence characteristics of single oil cluster, it is determined that No.1 and Daqing, Kuwait, No.2 and Dubai, Oman. Five groups of mixed samples were obtained from Indonesia at three characteristic wavelengths (304 卤2nm, 336 卤2nm) and 388 卤2nm (respectively). The relationship between the mixing fluorescence characteristics of fuel oil and crude oil and the mixing ratio was analyzed. The weathering experiment was carried out for 30 days. The influence of weathering on the fluorescence characteristics of fuel oil and crude oil was analyzed. The mixed fluorescence intensity value in Kuwait is significantly affected by the mixing ratio, and the mixed fluorescence intensity value increases with the increase of the proportion of fuel oil No. 1. The linear relationship was the best at the wavelength of 336 nm, and the correlation coefficient R2 was 0.9871, respectively. 0.9828. through 30 days weathering experiment, it is concluded that the change trend of fluorescence intensity decreased with the increase of light component volatilization intensity in the first 10 days is basically stable after 10 days. The short-term weathering for 30 days had little effect on the fluorescence characteristics of the mixed oil. In addition, the effects of seasons on the mixed fluorescence characteristics were investigated. The fluorescence intensity of the mixed oil was not different after weathering in summer and winter. Both increased with the increase of the proportion of fuel oil No. 1, which was consistent with the fluorescence characteristics of the mixed oil when it was not weathered. Fuel oil No. 2 mixed with crude oil: fuel oil No. 2 and Dubai. The mixed fluorescence intensity of Oman and Indonesia was significantly affected by the mixing ratio, and increased with the increase of the proportion of the components with strong fluorescence intensity. The linear relationship between the two groups was the best at the wavelength of 388nm. The correlation coefficient R ~ 2 is 0.9956 ~ 0.9980 ~ 0.9801.Through weathering for 30 days, it can be seen that the fluorescence intensity of the mixture changed slightly with the volatilization of light components in the first 13 days. After 13 days, it remained stable basically. During 30 days weathering, the fluctuation range of mixed fluorescence intensity was relatively small. It can be concluded that the mixed fluorescence intensity of the oil samples after weathering increases with the increase of the proportion of the components with strong fluorescence intensity, which is consistent with the change of fluorescence characteristics in the unweathered oil samples.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：X55

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