The effects of C/N cross-reactions on the NH3/C3H8 combustion: A shock-tube and modeling study

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2024-09-14 DOI:10.1016/j.combustflame.2024.113716

Jiacheng Liu , Dazhao Liu , Lingfeng Dai, Chun Zou, Qianjin Lin, Chao Peng

{"title":"The effects of C/N cross-reactions on the NH3/C3H8 combustion: A shock-tube and modeling study","authors":"Jiacheng Liu , Dazhao Liu , Lingfeng Dai, Chun Zou, Qianjin Lin, Chao Peng","doi":"10.1016/j.combustflame.2024.113716","DOIUrl":null,"url":null,"abstract":"<div>A viable strategy to improve ammonia (NH3) combustion stability is blending ammonia with high-reactivity fuels. Propane (C3H8) is the prevalent component in liquefied petroleum gas (LPG), emerging as a compelling choice for co-firing with ammonia in various practical applications. The ignition delay times (IDTs) of stoichiometric NH3/C3H8 mixtures in Ar dilution (90 %) with varying C3H8 fractions (XC3H8) of 0–30 % were conducted at pressures of 1.75 and 10 bar, and temperatures ranging from 1305 to 1890 K in a shock tube. The NH3-C3H8 model was developed based on the NH3 model optimized by Li et al., the C3H8 submodel in the NUIG 1.1 model, and some new cross-reactions were considered in the NH3-C3H8 model. The NH3-C3H8 model was extensively validated against IDTs measured in this work as well as laminar flame speeds (LFSs) and species profiles (SPs) of NH3/C3H8 from the literature. The comparison of the prediction performance between the NH3-C3H8 model and the M-NUIG model was conducted for ignition, flame propagation, and NH3 consumption. The effects of the cross-reactions on IDTs, LFSs, and SPs of NH3/C3H8 were studied in detail by the sensitivity analysis and rate of production (ROP) analysis using the NH3-C3H8 model. The newly added C/N cross-reactions play an important role in the prediction of the IDTs, LFSs, and SPs of NH3/C3H8 combustion.</div>","PeriodicalId":280,"journal":{"name":"Combustion and Flame","volume":"270 ","pages":"Article 113716"},"PeriodicalIF":5.8000,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Combustion and Flame","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010218024004255","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

A viable strategy to improve ammonia (NH₃) combustion stability is blending ammonia with high-reactivity fuels. Propane (C₃H₈) is the prevalent component in liquefied petroleum gas (LPG), emerging as a compelling choice for co-firing with ammonia in various practical applications. The ignition delay times (IDTs) of stoichiometric NH₃/C₃H₈ mixtures in Ar dilution (90 %) with varying C₃H₈ fractions (X_C3H8) of 0–30 % were conducted at pressures of 1.75 and 10 bar, and temperatures ranging from 1305 to 1890 K in a shock tube. The NH₃-C₃H₈ model was developed based on the NH₃ model optimized by Li et al., the C₃H₈ submodel in the NUIG 1.1 model, and some new cross-reactions were considered in the NH₃-C₃H₈ model. The NH₃-C₃H₈ model was extensively validated against IDTs measured in this work as well as laminar flame speeds (LFSs) and species profiles (SPs) of NH₃/C₃H₈ from the literature. The comparison of the prediction performance between the NH₃-C₃H₈ model and the M-NUIG model was conducted for ignition, flame propagation, and NH₃ consumption. The effects of the cross-reactions on IDTs, LFSs, and SPs of NH₃/C₃H₈ were studied in detail by the sensitivity analysis and rate of production (ROP) analysis using the NH₃-C₃H₈ model. The newly added C/N cross-reactions play an important role in the prediction of the IDTs, LFSs, and SPs of NH₃/C₃H₈ combustion.

查看原文本刊更多论文

C/N 交叉反应对 NH3/C3H8 燃烧的影响：冲击管和模型研究

提高氨（NH3）燃烧稳定性的可行策略是将氨与高活性燃料混合。丙烷（C3H8）是液化石油气（LPG）中的主要成分，在各种实际应用中成为与氨气共同燃烧的理想选择。在压力为 1.75 和 10 巴、温度为 1305 至 1890 K 的冲击管中，对氩气稀释（90%）的化学计量 NH3/C3H8 混合物以及 0-30% 的不同 C3H8 分数（XC3H8）进行了点火延迟时间（IDTs）试验。NH3-C3H8 模型是在 Li 等人优化的 NH3 模型和 NUIG 1.1 模型中的 C3H8 子模型基础上开发的，NH3-C3H8 模型还考虑了一些新的交叉反应。NH3-C3H8 模型与本研究中测量的 IDT 以及文献中 NH3/C3H8 的层流火焰速度（LFS）和物种剖面（SP）进行了广泛的验证。对 NH3-C3H8 模型和 M-NUIG 模型在点火、火焰传播和 NH3 消耗方面的预测性能进行了比较。通过使用 NH3-C3H8 模型进行敏感性分析和生成率（ROP）分析，详细研究了交叉反应对 NH3/C3H8 的 IDT、LFS 和 SP 的影响。新增加的 C/N 交叉反应在预测 NH3/C3H8 燃烧的 IDT、LFS 和 SP 方面发挥了重要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.