Solid Fuel Chemistry ( IF 0.8 ) Pub Date : 2022-04-20 , DOI: 10.3103/s0361521922020136 A. V. Goncharov 1 , E. B. Krivtsov 1
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Abstract
The paper presents the results of a comparative analysis of the cracking products of three samples of high-sulfur tars obtained at a temperature of 500°C and different process durations. The reaction rate constants of the thermal transformations of asphaltenes in the test tars were calculated using a kinetic model of the cracking process. It was found that the rate of asphaltene condensation into coke depends not only on the initial concentration of asphaltenes but also on their molecular structure. It was shown that the cracking of saturated fragments of the structural blocks of asphaltene molecules containing large aliphatic substituents led to the accumulation of secondary asphaltenes with a high degree of aromaticity, which had higher reaction rates of condensation into coke.
中文翻译：
高硫沥青质热裂化缩合反应速率常数的计算
摘要
本文介绍了在 500°C 温度和不同工艺持续时间下获得的三种高硫焦油样品的裂解产物的比较分析结果。使用裂解过程的动力学模型计算测试焦油中沥青质热转化的反应速率常数。研究发现，沥青质凝结成焦炭的速率不仅取决于沥青质的初始浓度，还取决于它们的分子结构。结果表明，含有大脂肪族取代基的沥青质分子结构块的饱和片段的裂解导致具有高度芳香性的次生沥青质的积累，其缩合成焦的反应速率更高。
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