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本文采用动态法原理，用单丝直径为０．２ｍｍ的铜－康铜热偶作为测温元件，在３１３～５３３Ｋ温度区间，测定了耐硫甲烷化催化剂的有效导热系数。用石蜡和锡作为参比物，对所用仪器及实验方法进行了可靠性检验。实验表明，动态法是测定多孔硫化物催化剂导热系数的有效方法，其精度符合工程要求，亦能用于其它材料导热系数的测定。对所测数据用单纯形方法优化拟合，得到大于３５３Ｋ范围内的有效导热系数的经验公式Ｋｅ＝０．２５５１＋８．８９６５×１０~（－５）Ｔ
In this paper, the principle of dynamic method was used to measure the effective thermal conductivity of the sulfur-tolerant methanation catalyst in the temperature range of 313 ~ 533K by using the copper-constantan thermocouple with the diameter of 0.2mm as the temperature measuring element. Using paraffin and tin as reference materials, the reliability of the instruments and experimental methods were tested. The experimental results show that the dynamic method is an effective method to determine the thermal conductivity of porous sulfides. The accuracy of the method is in accordance with the engineering requirements and can also be used to determine the thermal conductivity of other materials. The measured data were optimized by simplex method and the empirical formula Ke = 0.2551 + 8.8965 × 10 ~ (-5) T was obtained for the effective thermal conductivity greater than 353K