Ignition of micron amorphous boron particles in CO2 with shock tube

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2025-06-23 DOI:10.1016/j.combustflame.2025.114311

Shengyu Pang , Kai Pang , Long Miao , Yugan Liao , Xiao Hou , Baolu Shi

引用次数: 0

Abstract

This study successfully ignited 11 μm amorphous boron (B) powder in a pure carbon dioxide (CO₂) atmosphere using a shock tube ignition platform, providing important insights for CO₂-B reaction which was generally neglected in propulsion system. The experiments were conducted at temperatures ranging from 2100 to 2900 K and 3.5 atm, focusing on the effects of temperature and CO₂ concentration on the ignition characteristics. The results show that the ignition delay time decreases with increasing temperature. And the critical ignition temperature of boron was found to beyond 2100 K. The effects of CO₂ concentration on the ignition delay time and critical ignition temperature were much complex. These findings provide new data on boron ignition characteristics in CO₂ environments, offering valuable reference information for CO₂ propulsion technologies in space exploration.

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用激波管在CO2中点火微米级无定形硼颗粒

本研究利用激波管点火平台在纯二氧化碳（CO2）气氛中成功点燃了11 μm非晶硼(B)粉末，为推进系统中通常被忽视的CO2-B反应提供了重要的见解。实验在2100 ~ 2900 K和3.5 atm的温度下进行，重点研究了温度和CO2浓度对点火特性的影响。结果表明，点火延迟时间随温度的升高而减小。硼的临界着火温度在2100 K以上。CO2浓度对点火延迟时间和临界点火温度的影响非常复杂。这些发现提供了二氧化碳环境下硼点火特性的新数据，为空间探索中的二氧化碳推进技术提供了有价值的参考信息。

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

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.