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为研究富氧燃烧技术在陶瓷窑炉中实际传热现象,以液化气为燃料通过燃烧试验台进行富氧燃烧的试验。通过氧浓度和助燃气体温度对温度梯度、最高温度及最高温度点位置的影响研究,分析不同富氧燃烧条件与窑炉内温度分布的变化关系及规律。研究结果表明,在富氧燃烧条件下,随着氧浓度增加,1200℃以上高温区范围扩大,最高温度明显提高,温度分布均匀性更好;在氧浓度较高的条件下,助燃气体温度的升高更加有利于提高实际燃烧温度和传热空间的平均温度。
In order to study the actual heat transfer phenomenon of oxy-fuel combustion technology in ceramic kilns, LPG combustion test was carried out with liquefied gas as the fuel. Through the study of the effect of oxygen concentration and combustion gas temperature on the temperature gradient, the maximum temperature and the maximum temperature point, the relationship between different oxygen enrichment combustion conditions and the temperature distribution in the furnace was analyzed. The results show that under the condition of oxygen-rich combustion, with the increase of oxygen concentration, the range of high temperature above 1200 ℃ is expanded, the maximum temperature is obviously increased, and the temperature distribution is even better. Under the condition of high oxygen concentration, the temperature of combustion-supporting gas Raise is more conducive to improve the actual combustion temperature and the average temperature of heat transfer space.