For exploring the complex heat and mass transfer in the micro-particle fixed bed, the device to measure thermal conductivity was designed and built. The experiments showed that the error was less than 2.97% after calibrated, and reproducibility was good. Effects of particles diameters, porosity, flow rate and ion exchange on the thermal conductivity of micro-particle porous materials were investigated experimentally by thermal probe. The results indicated that the effective thermal conductivity in dry condition declined with the size of particles and porosity increase. The effective thermal conductivity in low flow rate (0.8 mL/min, 1.6 mL/min, 3.2 mL/min) is converse. The thermal conductivity of the resin particles after the ion exchange with the conditions of dry and low flow rate has not changed much. The chemical reaction and interrelated processing have no significant influence on the thermal conductivity by comparing with exchange of the ions of particles. The thermal conductivity of the soil from different areas in different ions further verified the above conclusions. The numerical simulation showed that the probe had little effect on the temperature field of fixed bed. It is a reliable and effective on-line method to measure the effective thermal conductivity of the micro-particle porous materials in fixed bed by thermal probe method.

为了探索微粒固定床中复杂的传热和传质，设计并构建了测量导热系数的装置。实验表明，校正后误差小于2.97％，重现性好。通过热探针实验研究了粒径，孔隙率，流速和离子交换对微粒多孔材料导热系数的影响。结果表明，干燥条件下有效导热系数随颗粒尺寸的增加而降低，孔隙率增加。相反，在低流速（0.8 mL / min，1.6 mL / min，3.2 mL / min）下的有效导热系数却相反。离子交换后的树脂颗粒在干燥和低流速条件下的热导率变化不大。与粒子离子的交换相比，化学反应和相关过程对导热率没有显着影响。不同离子在不同区域土壤的热导率进一步证实了以上结论。数值模拟表明，该探头对固定床的温度场影响很小。通过热探针法测量固定床中微粒多孔材料的有效导热系数是一种可靠，有效的在线方法。数值模拟表明，该探头对固定床的温度场影响很小。通过热探针法测量固定床中微粒多孔材料的有效导热系数是一种可靠，有效的在线方法。数值模拟表明，该探头对固定床的温度场影响很小。通过热探针法测量固定床中微粒多孔材料的有效导热系数是一种可靠，有效的在线方法。