Abstract

The thermal oxidation of mixtures of moderate-temperature coal pitch and the anthracene fraction of coal tar is investigated. The microstructure of the coke produced from the oxidized pitch is analyzed. Analysis of oxidized pitch indicates nonlinear variation in their properties (yield of water on oxidation, softening temperature, yield of volatiles, fractional composition, and microstructure of the coke produced) with increase in content of the anthracene fraction in the initial mixture. To obtain uniform isotropic content, the content of the anthracene fraction in the initial mixture must be within the optimal range, so as to ensure the required proportions of the mesogenic components (from the moderate-temperature coal pitch) and nonmesogenic components of the secondary α₂ (quinoline-soluble) fraction (from the anthracene fraction), thereby suppressing growth of the mesophase.

中文翻译：

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各向同性焦炭微结构的形成。1.由蒽馏分和煤沥青的混合物生产各向同性焦炭

摘要

研究了中温煤沥青和煤焦油蒽馏分混合物的热氧化。分析了由氧化沥青产生的焦炭的微观结构。氧化沥青的分析表明，随着初始混合物中蒽馏分含量的增加，其性能（氧化后的水收率，软化温度，挥发物的收率，馏分组成和生成的焦炭的微观结构）呈非线性变化。为了获得均匀的各向同性含量，初始混合物中蒽馏分的含量必须在最佳范围内，以确保次生α的介晶组分（来自中温煤沥青）和非介晶组分的要求比例₂ （喹啉可溶的）级分（来自蒽级分），从而抑制中间相的生长。