论文部分内容阅读
流化床燃烧技术具有很多优点,可适用多种燃料,使燃烧炉结构小型化,通过改善蒸汽条件提高动力设备的热效率。为此,正在研究把它用于船用蒸汽动力和陆上动力。在本文中,采用安装在摇摆台上的小型燃烧炉来模拟船舶摇摆状态,以考察流化床燃烧的多种效应,进而研究烧油和烧煤情况下燃烧炉的特点,并对两者进行比较。燃烧炉的倾斜使流化床的温度分布加剧变化,并使燃烧炉的锅炉效率降低,但烧油和烧煤两者无显著差别。另外,与在垂直炉中一样,在燃烧炉摇摆条件下,烧油和烧媒两者取得了几乎相同的锅炉效率。事实上这是由于流动载体具有很大的热容量所引起的时间平均效应的作用。综上所述,作者认为,持续倾斜状态是船用流化床燃烧中最苛刻的设计条件,然而在实际应用中,燃烧炉的功能只受到船体长周期(10分钟以上)摇摆的影响。
Fluidized bed combustion technology has many advantages, which can be applied to a variety of fuels to miniaturize the structure of the combustion furnace and improve the thermal efficiency of the power equipment by improving the steam conditions. To this end, it is studying the use of marine steam power and onshore power. In this paper, a small burner mounted on a rocking table was used to simulate the ship’s rocking state to investigate the various effects of fluidized bed combustion, and to study the characteristics of a combustion furnace in the case of oil burning and coal burning, Compare Inclinations of the furnace have exacerbated the temperature distribution in the fluidized bed and have reduced the efficiency of the boiler in the furnace, but there is no significant difference between the two. In addition, almost the same boiler efficiency is achieved with both the oil burn and the burn-in, as in the vertical furnace, under the burner rocking conditions. In fact, this is due to the time-averaging effect caused by the large thermal capacity of the mobile carrier. In summary, the author believes that the continuous tilting condition is the most demanding design condition for fluidized bed combustion in ships. However, in practical applications, the function of the burner is only affected by the long period of the hull (more than 10 minutes).