Abstract In this study, the main ignition and combustion characteristics have been compared for droplet groups of a coal-water slurry containing petrochemicals (CWSP), as well as oil, surrounded by water droplets. Thus, in a combustion chamber, we simulated the ignition and combustion conditions of a heterogeneous fuel aerosol that can be formed when jets of different liquids cross or when multi-component flows delaminate. It was shown that a decrease in the distance between droplets (from 10 mm to 2 mm, i.e. to the typical fuel droplet size) reduces the gas-phase and heterogeneous ignition delay times of oil and CWSP by 30% on average. The evaporation times of water droplets decrease by approximately 25%, if the distance between them increases in the combustion chamber. It was established that the ignition delay times of oil and coal-water slurry containing petrochemicals increased by 20–40% and 40–70%, respectively, when a combustible liquid droplet was in the center with six water droplets around it. The experimental results are a database for the development of efficient technologies of injecting multi-component fuel into combustion chambers.

中文翻译：

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含高浓度水的浆状燃料液滴组点火和燃烧的实验研究

摘要 在这项研究中，比较了水滴包围的含有石化产品 (CWSP) 和油的水煤浆液滴群的主要点火和燃烧特性。因此，在燃烧室中，我们模拟了异质燃料气溶胶的点火和燃烧条件，当不同液体的射流交叉或多组分流分层时可以形成这种气溶胶。结果表明，液滴之间距离的减小（从 10 毫米到 2 毫米，即典型的燃料液滴尺寸）可将油和 CWSP 的气相和非均相点火延迟时间平均减少 30%。如果在燃烧室中水滴之间的距离增加，水滴的蒸发时间会减少约 25%。研究表明，当可燃液滴在中心，周围有六个水滴时，含有石化产品的油和水煤浆的点火延迟时间分别增加了 20-40% 和 40-70%。实验结果是开发将多组分燃料注入燃烧室的有效技术的数据库。