{"title":"氨/二乙醚(DEE)混合物的冲击管和综合动力学模型研究","authors":"Lingfeng Dai, Jiacheng Liu, Chun Zou, Qianjin Lin, Tong Jiang, Chao Peng","doi":"10.1016/j.combustflame.2024.113482","DOIUrl":null,"url":null,"abstract":"<div><p>Ammonia (NH<sub>3</sub>) is a promising alternative clean fuel due to its carbon-free and high hydrogen content, along with the well-established infrastructure for storage and distribution. To overcome the issue of the low reactivity of NH<sub>3</sub>, a feasible strategy is co-burning ammonia with highly reactive fuels. Diethyl ether (DEE) is considered a promising alternative and biomass-oxygenated clean diesel substitute. Therefore, the NH<sub>3</sub>/DEE blend is also a promising carbon neutral alternative fuel. In this work, we measured the ignition delay times (IDTs) of NH<sub>3</sub>/DEE mixtures with DEE fractions (<em>X</em><sub>DEE</sub>) of 0.05, 0.10, 0.30, and 1.00 at equivalence ratios of 0.5, 1.0, and 2.0, pressures of 1.75 and 10 bar, and temperature ranges from 1102 K to 1673 K in a shock tube. The DEE-NH<sub>3</sub> model was proposed in this work, which included the DEE sub-model, NH<sub>3</sub> sub-model, and some new cross-reactions between N-containing species and C-containing species. The DEE sub-model from Shrestha et al. (Fuel Communications, 2022) was modified in this work, NH<sub>3</sub> sub-model was from our previous work (Reaction Chemistry & Engineering, 2023). The DEE-NH<sub>3</sub> model was extensively validated by the IDTs, laminar flame speeds (LFSs), and species profiles (SPs) of NH<sub>3</sub>/DEE mixtures as well as pure DEE and NH<sub>3</sub>. The comparison of the prediction performance between the DEE-NH<sub>3</sub> model and the Shrestha model was conducted for the ignition, flame propagation, and NH<sub>3</sub> consumption. The effects of the cross-reactions on the NH<sub>3</sub>/DEE ignition and combustion were studied in detail.</p></div>","PeriodicalId":280,"journal":{"name":"Combustion and Flame","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Shock tube and comprehensive kinetic modeling study of ammonia/diethyl ether (DEE) mixtures\",\"authors\":\"Lingfeng Dai, Jiacheng Liu, Chun Zou, Qianjin Lin, Tong Jiang, Chao Peng\",\"doi\":\"10.1016/j.combustflame.2024.113482\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ammonia (NH<sub>3</sub>) is a promising alternative clean fuel due to its carbon-free and high hydrogen content, along with the well-established infrastructure for storage and distribution. To overcome the issue of the low reactivity of NH<sub>3</sub>, a feasible strategy is co-burning ammonia with highly reactive fuels. Diethyl ether (DEE) is considered a promising alternative and biomass-oxygenated clean diesel substitute. Therefore, the NH<sub>3</sub>/DEE blend is also a promising carbon neutral alternative fuel. In this work, we measured the ignition delay times (IDTs) of NH<sub>3</sub>/DEE mixtures with DEE fractions (<em>X</em><sub>DEE</sub>) of 0.05, 0.10, 0.30, and 1.00 at equivalence ratios of 0.5, 1.0, and 2.0, pressures of 1.75 and 10 bar, and temperature ranges from 1102 K to 1673 K in a shock tube. The DEE-NH<sub>3</sub> model was proposed in this work, which included the DEE sub-model, NH<sub>3</sub> sub-model, and some new cross-reactions between N-containing species and C-containing species. The DEE sub-model from Shrestha et al. 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引用次数: 0
摘要
氨气(NH3)不含碳,氢气含量高,而且具有完善的储存和分配基础设施,因此是一种前景广阔的替代性清洁燃料。为了克服 NH3 反应性低的问题,一种可行的策略是将氨与高活性燃料共同燃烧。二乙醚 (DEE) 被认为是一种很有前途的生物质氧清洁柴油替代品。因此,NH3/DEE 混合燃料也是一种很有前途的碳中性替代燃料。在这项工作中,我们测量了 NH3/DEE 混合物的点火延迟时间(IDTs),其 DEE 分数(XDEE)分别为 0.05、0.10、0.30 和 1.00,等效比分别为 0.5、1.0 和 2.0,压力分别为 1.75 和 10 巴,在冲击管中的温度范围为 1102 K 至 1673 K。这项工作提出了 DEE-NH3 模型,其中包括 DEE 子模型、NH3 子模型以及含 N 物种和含 C 物种之间的一些新的交叉反应。本研究对 Shrestha 等人(Fuel Communications, 2022)的 DEE 子模型进行了修改,NH3 子模型来自我们之前的研究(Reaction Chemistry & Engineering, 2023)。DEE-NH3 模型通过 NH3/DEE 混合物以及纯 DEE 和 NH3 的 IDT、层流火焰速度 (LFS) 和物种剖面 (SP) 进行了广泛验证。比较了 DEE-NH3 模型和 Shrestha 模型在点火、火焰传播和 NH3 消耗方面的预测性能。详细研究了交叉反应对 NH3/DEE 点火和燃烧的影响。
Shock tube and comprehensive kinetic modeling study of ammonia/diethyl ether (DEE) mixtures
Ammonia (NH3) is a promising alternative clean fuel due to its carbon-free and high hydrogen content, along with the well-established infrastructure for storage and distribution. To overcome the issue of the low reactivity of NH3, a feasible strategy is co-burning ammonia with highly reactive fuels. Diethyl ether (DEE) is considered a promising alternative and biomass-oxygenated clean diesel substitute. Therefore, the NH3/DEE blend is also a promising carbon neutral alternative fuel. In this work, we measured the ignition delay times (IDTs) of NH3/DEE mixtures with DEE fractions (XDEE) of 0.05, 0.10, 0.30, and 1.00 at equivalence ratios of 0.5, 1.0, and 2.0, pressures of 1.75 and 10 bar, and temperature ranges from 1102 K to 1673 K in a shock tube. The DEE-NH3 model was proposed in this work, which included the DEE sub-model, NH3 sub-model, and some new cross-reactions between N-containing species and C-containing species. The DEE sub-model from Shrestha et al. (Fuel Communications, 2022) was modified in this work, NH3 sub-model was from our previous work (Reaction Chemistry & Engineering, 2023). The DEE-NH3 model was extensively validated by the IDTs, laminar flame speeds (LFSs), and species profiles (SPs) of NH3/DEE mixtures as well as pure DEE and NH3. The comparison of the prediction performance between the DEE-NH3 model and the Shrestha model was conducted for the ignition, flame propagation, and NH3 consumption. The effects of the cross-reactions on the NH3/DEE ignition and combustion were studied in detail.
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.