连续蓄热燃烧技术在固体燃料加热炉应用探索

Exploration of Applications of Continuous Type Heat Accumulation Combustion Technologies in Solid Fuel Heater

根据固体燃料燃烧的特点及高温空气燃烧技术原理,对连续蓄热燃烧技术在固体燃料加热炉上的应用进行了探索。搭建连续式蓄热固体燃料实验装置,对炉膛温度、烟气温度及助燃空气温度等参数进行测量分析,排烟温度可以控制在150℃以下,助燃空气预热温度低于高温烟气温度约100℃。当助燃空气预热温度波动30℃左右时,炉膛温度波动不高于3℃,可以满足多种加热工艺对加热精度的要求。测试结果表明,连续式高温空气燃烧技术可以应用在固体燃料加热炉上,通过对其烟气余热最大限度的回收,拓展了蓄热燃烧技术的应用领域。

In the light of the features of solid fuels when they are burning and the principles controlling the high temperature air combustion technology,explored were applications of the continuous type heat accumulation combustion technology in solid fuel heaters. A continuous type heat accumulation solid fuel test device was set up and such parameters as temperature in the furnace,flue gas temperature and combustion-aided air temperature etc. were measured and analyzed,indicating that the flue gas temperature can be controlled at a temperature below 150 ℃ and the combustion-aided air preheated temperature can be lower than the high-temperature flue gas temperature by about 100 ℃.When the fluctuation in the combustion-aided air preheated temperature is around 30 ℃,the fluctuation of the temperature in the furnace is not higher than 3 ℃,capable of meeting the requirements for the heating precision by numerous heating processes. The test results show that the continuous type high temperature air combustion( HTAC)technology can be applied in solid fuel heaters,thus achieving a waste heat recovery to the limits and extending the domains in which the heat accumulation combustion technology is applied.