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Non-Catalytic Steam Reforming of C1–C4 Hydrocarbons
Petroleum Chemistry ( IF 1.4 ) Pub Date : 2021-07-13 , DOI: 10.1134/s0965544121070021
V. I. Savchenko 1 , Ya. S. Zimin 1, 2 , A. V. Nikitin 1, 2 , I. V. Sedov 1 , V. S. Arutyunov 1, 2
Affiliation  

Abstract

The paper reports the results of a kinetic modeling and thermodynamic analysis of non-catalytic steam reforming (NCSR) of methane and C2–C4 hydrocarbons at 1400–1800 K. The hydrocarbon-to-syngas conversion sequence and the time periods of the major process steps were identified. The initial step consists of hydrocarbon pyrolysis to acetylene and H2 with essentially no involvement of H2O. Noticeable H2O conversion starts at a significantly later point than thermal hydrocarbon conversion, under the effects of radicals formed from the pyrolysis. The H2O conversion results in the generation of OH radicals, which subsequently react with acetylene to form CO and H2. The key step in the NCSR of C1–C4 hydrocarbons, as well as in their high-temperature interaction with CO2 (carbon-dioxide conversion) is conversion of the acetylene formed from the hydrocarbon pyrolysis. The study findings are important for the optimization of high-temperature syngas production via partial oxidation of hydrocarbons.



中文翻译:

C1-C4 烃的非催化蒸汽重整

摘要

该论文报告了在 1400-1800 K 下对甲烷和 C 2 - C 4烃进行非催化蒸汽重整 (NCSR) 的动力学建模和热力学分析的结果。烃到合成气的转化顺序和时间段确定了主要的工艺步骤。初始步骤由烃热解为乙炔和 H 2 组成,基本上没有 H 2 O 的参与。在热解形成的自由基的影响下,明显的 H 2 O 转化在明显晚于热烃转化的点开始。H 2 O 转化导致生成 OH 自由基,随后与乙炔反应生成 CO 和 H 2。C 1 -C 4烃的 NCSR以及它们与 CO 2的高温相互作用(二氧化碳转化)的关键步骤是转化由烃热解形成的乙炔。研究结果对于通过碳氢化合物的部分氧化来优化高温合成气生产具有重要意义。

更新日期:2021-07-14
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