Experimental and modeling study on the high-temperature ignition of ammonia/diethyl ketone

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2025-04-01 DOI:10.1016/j.combustflame.2025.114069

Tianci Yan, Chun Zou, Qianjin Lin, Yi Yuan, Lingfeng Dai, Jiacheng Liu

{"title":"Experimental and modeling study on the high-temperature ignition of ammonia/diethyl ketone","authors":"Tianci Yan, Chun Zou, Qianjin Lin, Yi Yuan, Lingfeng Dai, Jiacheng Liu","doi":"10.1016/j.combustflame.2025.114069","DOIUrl":null,"url":null,"abstract":"<div><div>The ignition delay times (IDTs) of NH3/diethyl ketone (DEK) mixtures at DEK blending ratios (XDEK) of 0.05, 0.1, and 0.5 were measured in a shock tube at equivalence ratios (φ) of 0.5, 1.0 and 2.0, pressures of 1.75 and 10 bar, and temperatures from 1200 to 1900 K. The addition of DEK with XDEK = 0.05 significantly improves the combustion performance of ammonia. A detailed DEK-NH3 model was proposed including the NH3 sub-model, the DEK sub-model, and the cross-reactions between hydrocarbon/oxygenated species and nitrogen-containing species. The model well predicts the IDTs of NH3/DEK mixtures measured in this study, and the IDTs of pure NH3 reported in the literature. The cross-reactions consist of the prompt NO and reburn reactions (reaction-class 1), the recombination reactions and the oxidation reactions of small amines (reaction-class 2), the H-atom abstraction reactions (reaction-class 3), and the disproportionation reactions (reaction-class 4). The comparison of the model predictions shows that the reaction-class 1 and 2 have negligible effects on the ignition. The reaction-class 3 slightly promotes the ignition and the reaction-class 4 significantly inhibits the ignition. The dependence of the effects of the cross-reactions on the blending ratio and pressure are discussed in detail. The NH3/DEK oxidation pathway is also analyzed.</div></div>","PeriodicalId":280,"journal":{"name":"Combustion and Flame","volume":"276 ","pages":"Article 114069"},"PeriodicalIF":5.8000,"publicationDate":"2025-04-01","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/S0010218025001075","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

The ignition delay times (IDTs) of NH₃/diethyl ketone (DEK) mixtures at DEK blending ratios (X_DEK) of 0.05, 0.1, and 0.5 were measured in a shock tube at equivalence ratios (φ) of 0.5, 1.0 and 2.0, pressures of 1.75 and 10 bar, and temperatures from 1200 to 1900 K. The addition of DEK with X_DEK = 0.05 significantly improves the combustion performance of ammonia. A detailed DEK-NH₃ model was proposed including the NH₃ sub-model, the DEK sub-model, and the cross-reactions between hydrocarbon/oxygenated species and nitrogen-containing species. The model well predicts the IDTs of NH₃/DEK mixtures measured in this study, and the IDTs of pure NH₃ reported in the literature. The cross-reactions consist of the prompt NO and reburn reactions (reaction-class 1), the recombination reactions and the oxidation reactions of small amines (reaction-class 2), the H-atom abstraction reactions (reaction-class 3), and the disproportionation reactions (reaction-class 4). The comparison of the model predictions shows that the reaction-class 1 and 2 have negligible effects on the ignition. The reaction-class 3 slightly promotes the ignition and the reaction-class 4 significantly inhibits the ignition. The dependence of the effects of the cross-reactions on the blending ratio and pressure are discussed in detail. The NH₃/DEK oxidation pathway is also analyzed.

查看原文本刊更多论文

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.