Abstract An integrated process of coal pyrolysis with steam reforming of propane (CP-SRP) to improve tar yield was studied using Ni/Al2O3 as reforming catalyst. Comparing with coal pyrolysis under N2 atmosphere (CP-N2), the CP-SRP and the integrated coal pyrolysis with steam reforming of methane (CP-SRM) or methane with a few propane (CP-SRMP) show higher tar yield. Tar yield reaches its maximum at 600 °C in CP-SRP, which is 1.17, 1.14, and 1.11 times that in CP-N2, CP-SRMP and CP-SRM, respectively. Simulated distillation and GC–MS were used to characterize the fraction distributions and compositions of tar, which indicated the tar from CP-SRP has higher light oil, phenols and naphthalenes content than that from CP-N2. Isotopic tracer agents like C3D8 and D2O were used to study the tar formation mechanism in CP-SRP. The radicals like D, CD3 generated by activated C3D8 and D2O in SRP combine with radicals formed from coal pyrolysis to improve tar yield and change the product distribution.

中文翻译：

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煤热解与丙烷蒸汽重整联合提高焦油产率

摘要 以Ni/Al2O3 为重整催化剂，研究了煤热解与丙烷蒸汽重整(CP-SRP) 的综合工艺以提高焦油产率。与 N2 气氛下的煤热解 (CP-N2) 相比，CP-SRP 和甲烷蒸汽重整 (CP-SRM) 或甲烷与少量丙烷 (CP-SRMP) 的综合煤热解显示出更高的焦油产率。CP-SRP 的焦油产率在 600 °C 时达到最大值，分别是 CP-N2、CP-SRMP 和 CP-SRM 的 1.17、1.14 和 1.11 倍。模拟蒸馏和 GC-MS 用于表征焦油的馏分分布和组成，这表明来自 CP-SRP 的焦油比来自 CP-N2 的焦油具有更高的轻油、酚类和萘含量。C3D8 和 D2O 等同位素示踪剂用于研究 CP-SRP 中的焦油形成机制。像 D 这样的部首，