Jiacheng Liu , Dazhao Liu , Lingfeng Dai, Chun Zou, Qianjin Lin, Chao Peng
{"title":"C/N 交叉反应对 NH3/C3H8 燃烧的影响：冲击管和模型研究","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><p>A viable strategy to improve ammonia (NH<sub>3</sub>) combustion stability is blending ammonia with high-reactivity fuels. Propane (C<sub>3</sub>H<sub>8</sub>) 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 NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> mixtures in Ar dilution (90 %) with varying C<sub>3</sub>H<sub>8</sub> fractions (<em>X<sub>C3H8</sub></em>) 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 NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model was developed based on the NH<sub>3</sub> model optimized by Li et al., the C<sub>3</sub>H<sub>8</sub> submodel in the NUIG 1.1 model, and some new cross-reactions were considered in the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model. The NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model was extensively validated against IDTs measured in this work as well as laminar flame speeds (LFSs) and species profiles (SPs) of NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> from the literature. The comparison of the prediction performance between the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model and the M-NUIG model was conducted for ignition, flame propagation, and NH<sub>3</sub> consumption. The effects of the cross-reactions on IDTs, LFSs, and SPs of NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> were studied in detail by the sensitivity analysis and rate of production (ROP) analysis using the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model. The newly added C/N cross-reactions play an important role in the prediction of the IDTs, LFSs, and SPs of NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> combustion.</p></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":"{\"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><p>A viable strategy to improve ammonia (NH<sub>3</sub>) combustion stability is blending ammonia with high-reactivity fuels. Propane (C<sub>3</sub>H<sub>8</sub>) 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 NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> mixtures in Ar dilution (90 %) with varying C<sub>3</sub>H<sub>8</sub> fractions (<em>X<sub>C3H8</sub></em>) 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 NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model was developed based on the NH<sub>3</sub> model optimized by Li et al., the C<sub>3</sub>H<sub>8</sub> submodel in the NUIG 1.1 model, and some new cross-reactions were considered in the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model. The NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model was extensively validated against IDTs measured in this work as well as laminar flame speeds (LFSs) and species profiles (SPs) of NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> from the literature. The comparison of the prediction performance between the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model and the M-NUIG model was conducted for ignition, flame propagation, and NH<sub>3</sub> consumption. The effects of the cross-reactions on IDTs, LFSs, and SPs of NH<sub>3</sub>/C<sub>3</sub>H<sub>8</sub> were studied in detail by the sensitivity analysis and rate of production (ROP) analysis using the NH<sub>3</sub>-C<sub>3</sub>H<sub>8</sub> model. 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The effects of C/N cross-reactions on the NH3/C3H8 combustion: A shock-tube and modeling study
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.
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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:
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