Abstract

This work investigates experimentally the thermal and environmental performance of combustion of n-heptane sprayed by superheated steam and heated air in a laboratory atmospheric burner. The one-component analogue n-heptane (formula C₇H₁₆) is often used for numerical simulation of diesel fuel combustion. The results obtained are compared with data on diesel fuel. It is shown that during combustion of n-heptane atomized by a steam jet, all the main features typical of combustion of liquid hydrocarbons with supply of steam are retained. High completeness of the fuel combustion is ensured, and the emission of nitrogen oxides and carbon monoxide is reduced in comparison with air combustion. The CO emission per combustion of 1 kg of n-heptane is about three times lower at steam atomization than that at air spraying, and NOx is about two times lower. The experimental results are topical for verification of results of numerical calculations in relation to study of combustion of liquid fuel sprayed with a jet of superheated steam (or air).

中文翻译：

---

蒸汽或空气射流喷射正庚烷燃烧特性研究

摘要

这项工作通过实验研究了在实验室大气燃烧器中用过热蒸汽和热空气喷射正庚烷的燃烧的热性能和环境性能。单组分类似物正庚烷（分子式 C ₇ H ₁₆）通常用于柴油燃料燃烧的数值模拟。将所得结果与柴油燃料数据进行比较。结果表明，在n的燃烧过程中- 通过蒸汽喷射雾化的庚烷，保留了使用蒸汽供应液态烃燃烧的所有主要特征。保证了燃料燃烧的高度完全性，与空气燃烧相比，减少了氮氧化物和一氧化碳的排放。蒸汽雾化时每燃烧 1 kg正庚烷的 CO 排放量大约是空气喷雾时的三倍，而 NOx 大约低两倍。实验结果是验证与研究喷射过热蒸汽（或空气）喷射的液体燃料燃烧相关的数值计算结果的主题。