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利用微波辐射降低原油粘度是一种新的高效处理方法,微波降粘效果取决于油样吸收微波的能量,油样对微波的吸收率取决于微波频率,因此油样最大能量吸收率所对应的微波频率定义为峰值吸收频率。基于微波二端口网络模型,利用自行设计的微波辐射实验设备进行研究,精确测量了待测油样的峰值吸收频率,并详细分析了频率对原油组分的影响。结果表明:在3.9~6.5 GHz的扫描频率下,油样在频率为5.8 GHz时出现第1个吸收频率且能量仅剩69.9%,在6.2 GHz时出现第2个吸收频率且能量仅剩36.4%,该频率为峰值吸收频率;运用GC-MS分析经过5.8 GHz和6.2 GHz微波辐射后,轻组分(C7-C14)分别增加了7.6%、8.7%,重组分(C16及以上碳数)分别减少12.4%、13.5%,原油组分发生明显的改变。研究结论为微波辐射技术在石油行业运用提供了重要的参考,证明了该技术具有良好的应用前景。
The use of microwave radiation to reduce the viscosity of crude oil is a new and efficient method of treatment. The effect of microwave viscosity reduction depends on the energy of the oil sample to absorb the microwave. The oil sample’s microwave absorption rate depends on the microwave frequency. Therefore, the maximum energy absorption rate of the oil sample Microwave frequency is defined as the peak absorption frequency. Based on the microwave two-port network model, the microwave radiation experiment equipment designed by ourselves was used to study the peak absorption frequency of the oil sample under measurement. The influence of frequency on the composition of crude oil was analyzed in detail. The results show that the first absorption frequency and the remaining energy of 69.9% at the frequency of 5.8 GHz and the second absorption frequency of 6.2 GHz and the energy of only 36.4% at the scanning frequency of 3.9-6.5 GHz, respectively (C7-C14) increased by 7.6%, 8.7%, and the weight fraction (C16 and above) respectively by GC-MS analysis after 5.8 GHz and 6.2 GHz microwave radiation Reduce 12.4%, 13.5%, significant changes in the composition of crude oil. The conclusion of the study provides an important reference for the application of microwave radiation technology in petroleum industry, and proves that the technology has good application prospect.