摘要
高温空气燃烧技术(HTAC)是九十年代初在日本开发的一项新的燃烧技术。该项技术具有节约燃料、低NOX排放、热利用率高和减小设备尺寸等特点。分析了HTAC的火焰温度分布特征及其可降低NOx排放的原理。高炉煤气、焦炉煤气及94.5%高炉煤气与5.5%焦炉煤气的混合煤气应用于HTAC技术的理论计算结果表明，理论燃烧温度随着预热空气和燃气温度的升高而升高，因此HTAC技术可燃用传统燃烧方式不能使用的低热值燃气。此外，空气、燃气双预热可将排烟温度将得更低，热利用率提得更高。最后，指出了在燃油、燃气锅炉及煤(或可燃固体废弃物)气化系统中采用HTAC技术的可能性。
The High Temperature Air Combustion(HTAC)technique was developed in Japan in the early 1990(s. Using this technique can bring about significant fuel savings, low NOx emission, high heat-utilization efficiency and size reduction of the facility. In this paper, the characteristics of the flame temperature distribution and the principles of NOx reduction in the HTAC technique were analyzed. The results of the theoretical calculation for the blast furnace gas, coke oven gas and mixed gas(BFG 94.5% by volume and COG 5.5% by volume)applied in the HTAC technique showed that the theoretical combustion temperature increases with the temperatures of preheated air and fuel gas. Low heat-value gas, which cannot be fired in conventional combustion systems, can therefore be used in industrial furnaces by the HTAC technique. In addition, using preheated gas and air can make the exit gas temperature lower and the heat-utilization efficiency higher. In the end, the possibilities of application of the HTAC technique to oil- and gas-fired boilers and coal or combustible solid-waste gasification systems were presented.
出处
《能源研究与信息》
2001年第1期27-35,共9页
Energy Research and Information
关键词
高温空气燃烧
热利用率
燃烧技术
high-temperature air combustion
low NOx emission
heat-utilization efficiency
