以加氢工艺生产CA值大于12%的环保橡胶油为目标,考察了环保橡胶油中8种特定多环芳烃(PAHs)与总多环芳烃(PCA)含量之间的对应关系.用不同原料油、不同类型的加氢催化剂以及在不同工艺条件下制备环保橡胶油,对比其PAHs和PCA含量的对应关系.结果表明:对于加氢工艺生产环保橡胶油,其 PAHs 与 PCA 含量的对应关系为:当环保橡胶油的PCA质量分数低于3%时,其PAHs含量满足欧盟环保指标的要求,而环保橡胶油的 PAHs 含量合格时,其PCA含量不一定合格,当且仅当PAHs质量分数低于1. 0 μg/g或是未检出时,其PCA质量分数满足小于3%的指标要求;以PAHs含量为环保橡胶油的控制指标,其操作空间(反应温度)较以 PCA含量为控制指标宽;建立了加氢法环保橡胶油中PAHs与PCA含量的经验关联式yPAHs=0. 0363 xPCA3. 1866,相关系数为0. 9822,可在一定范围内通过PCA含量的分析数据进行PAHs含量的预测.%In this article,corresponding relations to PAHs and PCA content was studied in order to produce environment-friendly rubber filling oil with CAvalue over 12% by hydrofining process. A large number of experiments were done to produce environmental-friendly rubber filling oil by different feed-stock,hydrofining catalysts and process conditions accompanying by analyzing and comparing the PAHs and PCA content. The results showed that there was a non-ideal correspondence between PAHs and PCA content in environmental-friendly rubber filling oil by hydrofining process;the PAHs met the re-quirements of EU environmental protection laws and regulations when the PCA content was less than 3%. Otherwise,it was not necessarily,and the PCA content met requirements if and only if the 8 kinds of PAHs were below 1. 0 μg/g or not detected. What's more,the operation range(reaction temperature)was wider than PCA when PAHs were regarded as environmental index. The empirical correlation yPAHs=0. 036 3 xPCA3. 186 6 for the determination of PAHs and PCA content in the hydrogenation process of the environmental-friendly rubber filling oil was established with the correlation coefficient of 0. 9 8 2 2, which can predict the PAHs content through the analysis of the PCA content within a certain range.
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