Effect of operating conditions on the performance of riser reactor for oxidative coupling of methane

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2024-04-06 DOI:10.1016/j.partic.2024.03.007

Min Cai, Shuangzhu Kong, Mengxi Liu, Chunxi Lu

引用次数: 0

Abstract

Oxidative coupling of methane (OCM) is characterized by high temperature and strong heat released. A riser reactor is designed for the OCM process to improve gas-solid contacting and heat transfer. This work illustrates the effect of hydrodynamic conditions and feed gas composition on the performance of an OCM riser reactor. The findings suggest that oxidative reactions predominantly occur within the acceleration zone and developed flow zone. Furthermore, at the low superficial gas velocity accompanied by a high solid circulating rate, the C₂ yield initially increases in the acceleration zone, followed by a decrease in the developed flow zone and deceleration zone. The optimal operating conditions are a specific region corresponding to the solids holdup ranges from 0.015 to 0.02. Moreover, the C₂ yield can be elevated using an appropriate feed mixture.

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操作条件对甲烷氧化耦合立管反应器性能的影响

甲烷氧化偶联（OCM）的特点是温度高、放热强。为改善气固接触和传热，设计了一种用于 OCM 工艺的立管反应器。这项研究说明了流体动力学条件和原料气体成分对 OCM 立管反应器性能的影响。研究结果表明，氧化反应主要发生在加速区和发达流区。此外，在低表层气速和高固体循环速率条件下，C2 产率最初在加速区增加，随后在发达流区和减速区减少。最佳运行条件是与 0.015 至 0.02 的固体截留率范围相对应的特定区域。此外，使用适当的进料混合物可以提高 C2 产量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.