红外光谱评价油页岩含油率的方法及仪器关键技术研究

发布时间：2018-09-19 07:26

【摘要】：低温干馏法、测井评价法和岩石热解法等这些常规油页岩含油率测定方法具有操作繁琐或效率低等不足之处，不能用于油页岩含油率的现场快速测量。红外光谱分析技术具有测量速度快、灵敏度高、可连续测量等诸多优点，目前已经被广泛应用于许多领域中油份的定性或定量分析，红外光谱分析技术有望成为油页岩含油率现场快速测量的新方法，为我国油页岩资源大规模深入评价提供一种更为高效、方便、实用的快速检测手段。文章研究了PCA-MD和RHM异常样品剔除算法、数据预处理算法、以及CC、MWPLS和UVE波长选择算法在近红外光谱法测定油页岩含油率中的应用，考察了以上算法的使用条件和对分析模型的优化效果。采用了超声波辅助四氯化碳萃取油页岩的三波数中红外光谱法测定油页岩中的含油率，并和中红外压片透射法测定油页岩含油率以及近红外光谱法测定效果进行对比分析，最终确定近红外光谱法更具优势。依据方法研究结果进行近红外光谱仪器研制：研制出一种覆盖750~2500nm波长区间、带有样品池、能量连续可调的光源，，文章给出了其光机电各部分设计；研制出采用CCD传感器的短波段近红外光纤光谱仪，对其光学、电路和软件各部分设计进行深入研究并给出设计结果；研制出采用InGaAs阵列传感器的长波段近红外光谱仪，给出了仪器各部分的设计方案。
[Abstract]:The conventional oil shale oil content measurement methods, such as low temperature distillation method, logging evaluation method and rock pyrolysis method, have some shortcomings, such as cumbersome operation and low efficiency, which can not be used to measure oil shale oil content quickly in situ. Infrared spectrum analysis technology has many advantages, such as high measurement speed, high sensitivity, continuous measurement and so on, and has been widely used in many fields of qualitative or quantitative analysis of oil content. Infrared spectrum analysis technology is expected to be a new method for oil shale oil content measurement in situ, which provides a more efficient, convenient and practical rapid detection method for the large-scale in-depth evaluation of oil shale resources in China. This paper studies the application of PCA-MD and RHM abnormal sample removal algorithm, data preprocessing algorithm, and CC,MWPLS and UVE wavelength selection algorithm in the determination of oil shale oil content by near infrared spectroscopy. The use conditions of the above algorithm and the optimization effect of the analytical model are investigated. Ultrasonic assisted extraction of oil shale with carbon tetrachloride (CCL 4) was used to determine the oil content in oil shale by using three wave number mid-infrared spectroscopy, and the results were compared with those of medium infrared pressure plate transmission method and near infrared spectroscopy method. The final determination of near infrared spectroscopy has more advantages. According to the results of the research, the near infrared spectrometer is developed: a light source covering the wavelength range of 750~2500nm with a sample cell and continuously adjustable energy is developed. The design of each part of the optical and mechanical parts is given in this paper. A short band near infrared optical fiber spectrometer using CCD sensor is developed. The optical, circuit and software design of the instrument is studied and the design results are given. A long band near infrared spectrometer using InGaAs array sensor is developed. The design scheme of each part of the instrument is given.
【学位授予单位】：吉林大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TE662

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