结合有效介质理论的乳状液太赫兹光谱分析

原油乳状液对原油的长距离输运具有重要影响,乳状液的油、水状态及相互作用机制还需新理论和新方法获得新认识,基于有效介质理论,本文研究了原油乳状液太赫兹光谱响应特征.通过太赫兹时域光谱系统测试得到了含水率为0～28％的原油乳状液的太赫兹时域光谱,结合傅里叶变换计算了吸收系数和介电常数等光学参数,同一频率下吸收系数等光学参数...

Terahertz spectral analysis of emulsion combined with effective medium theory

Crude oil emulsions have an important influence on the long-distance transportation of crude oil.The oil and water state of the emulsion and the interaction mechanism require new theories and new methods.The terahertz spectrum(THz-TDS)response of crude oil emulsion is studied based on the effective medium theory.The THz-TDS of emulsions with water content of 0~28%are obtained by using the THz-TDS system.The optical parameters such as absorption coefficient and dielectric constant are calculated by Fourier transform.The optical parameters increase with the increase of water content of emulsions.The actual dielectric constant is consistent with the dielectric constant calculated by Bruggeman s theory,and the maximum error rate is less than 3%.The results show that when the water content is small,the water is dispersed in the crude oil,the distance between the particles is large,and the interaction force between the particles is small.As the water content increases,the water phase and the oil phase are mixed and distributed,the distance between the particles will become smaller,and the interaction force of the particles will become larger.Therefore,the effective medium theory is significant to investigate the THz spectrum of oil-water emulsions.