混浊变质柴油磁致澄清现象紫外-可见分光光度法研究

Study of Clarification Phenomenon of Turbid & Degenerative Diesel Caused by Magnetization with UV-Vis Spectrophotometry

用紫外-可见分光光度法,研究了混浊变质柴油经磁场强度20~100 m T、搅拌转速400~1 000 r/min、时间15~60 min和温度30~60℃的条件下磁化处理后,在190~800 nm的波长范围内的光谱变化规律。结果表明：在波长200~400 nm范围内,变质柴油中的芳环和杂环化合物的特征吸光值有随着磁化强度的增大、磁化转速的提高和磁化时间的延长而下降的趋势。温度升高到60℃的磁化处理条件不利于变质柴油的吸光值继续下降。照片显示,经60 m T、800 r/min、50℃、45 min优化条件下磁化处理的混浊柴油明显变澄清。该磁致澄清的变质柴油在室温下静置6 d后重新变成混浊状态。混浊变质柴油磁致澄清后能否继续当作发动机燃料用,磁处理对变质柴油的回炼、处理是否有积极作用还需进一步研究工作。

190 ~ 800 nm spectral change rules of turbid ＆ degenerative diesel samples were studied by UV-Vis spectrophotometry after they were treated by magnetization under the conditions of magnetic field intensity of 20 ~100 m T,rotation speed of 400 ~ 1000 r / min,magnetizing time of 15 ~ 60 min and magnetizing temperature of 30 ~60 ℃. The results showed that in the range of 200 ~ 400 nm,characteristic absorbance values of aromatic ring compounds and heterocyclic compounds in degenerative diesel had obvious decline trend with the increase of magnetic field intensity,rotation speed and magnetizing time. The magnetizing temperature condition of 60 ℃ made against to the further fall of absorbance. The photos showed that turbid diesel became clarifying obviously after magnetization treatment under the optimization conditions of 60 m T,800 r / min,50 ℃ and 45 min. The clarifying degenerative diesel restarted to become turbid after 6 d at room temperature. Whether the clarifying degenerative diesel after magnetization treatment being used as engine fuel and whether there is a positive effect of magnetization treatment of degenerative diesel on its recycle and treatment still need to further study.