Spray combustion characteristics of boron slurry fuel in high particle loading conditions

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2024-09-27 DOI:10.1016/j.combustflame.2024.113739

P. Prabhudeva, Srinibas Karmakar

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引用次数: 0

Abstract

Enhancing the energy density of hydrocarbon fuels is indeed crucial, especially in the context of addressing energy needs. Incorporating energetic particles as additives into conventional liquid fuels garners increased attention due to its potential to enhance energy density. Due to its high energy potential, boron is the most promising additive in several energetic particles. However, the study focusing on the boron-loaded slurry fuels are limited. Therefore, the present work focuses on the effect of boron loading on the spray combustion of boron-loaded slurry fuel, especially at higher loadings (10%, 20% & 30% boron + Jet A-1 fuel) using a swirl-stabilized spray combustor. The research scrutinizes the feed and exhaust particles' surface morphology, chemical composition and active boron content through diverse particle characterization techniques. Furthermore, the study investigates the influence of boron loading on the combustion characteristics of slurry fuel using methods such as colour flame imaging, spectroscopy, and BO₂* Chemiluminescence imaging. The impact of boron loading on the positive thermal contribution of the slurry was examined by analyzing temperature measurements at various locations within the combustor. The BO₂* chemiluminescence imaging and spectroscopy results indicate that the intensity of BO₂ emission increases with a rise in particle loading. The temperature results reveal an increase in temperature compared to pure Jet A-1 for all the boron-loaded cases. In particular, JB10 and JB20 achieved nearly 90% and 85% of the theoretical temperature increase. The diffractogram and thermogravimetric results of the burnt particles collected show that the particles were burnt thoroughly for the boron-loaded cases.

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高颗粒装载条件下硼浆燃料的喷雾燃烧特性

提高碳氢化合物燃料的能量密度确实至关重要，尤其是在满足能源需求方面。在传统液体燃料中加入高能粒子作为添加剂，因其具有提高能量密度的潜力而日益受到关注。硼具有高能量潜力，是几种高能粒子中最有前途的添加剂。然而，针对含硼浆状燃料的研究还很有限。因此，本研究的重点是硼负载对使用漩涡稳定喷雾燃烧器的硼负载浆状燃料喷雾燃烧的影响，尤其是在较高负载（10%、20% & 30% 硼 + Jet A-1 燃料）时。研究通过多种颗粒表征技术，仔细检查了进料和排气颗粒的表面形态、化学成分和活性硼含量。此外，该研究还采用彩色火焰成像、光谱学和 BO2* 化学发光成像等方法，研究了硼负载对浆状燃料燃烧特性的影响。通过分析燃烧器内不同位置的温度测量值，研究了硼负载对泥浆正热贡献的影响。BO2* 化学发光成像和光谱分析结果表明，随着颗粒装载量的增加，BO2 的发射强度也在增加。温度结果显示，与纯喷气 A-1 相比，所有硼负载情况下的温度都有所上升。其中，JB10 和 JB20 的理论升温幅度分别达到了近 90% 和 85%。收集到的烧焦颗粒的衍射图和热重结果显示，硼负载情况下的颗粒烧得很彻底。

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.