【作者】 王丽；

【导师】 俞颐秦；

【作者基本信息】 河北工业大学 ， 热能工程， 2003， 硕士

【摘要】 本课题研究的主要内容就是对现有燃用天然气的燃烧器进行改装，使之适合煤制气燃烧。通过对火焰传播理论和火焰稳定性理论的研究，综合调节火焰传播速度和火孔处混合气体的气流出口速度，不仅能保证煤制气燃烧时不回火而且燃烧完全，使黄火少甚至可以没有黄火。在实验中，主要通过调整一次空气系数和引射器喷口的大小，达到稳定燃烧的运行工况。改装后的燃烧器具有燃烧强度大、火焰燃烧稳定等优点。在此基础上，设计出了容量为3×10~4Kcal/h的小型全自动煤气锅炉，炉体结构采用容积式火管结构，能满足用户大流量使用热水的要求，并能实现一炉多用。更能适合现代家庭中央热水的需要。热水温度可调节，并能保持恒定温度。总之，对小型全自动煤制气锅炉的有关技术和装置所进行的理论和实验研究，对今后实现生产高性能、低价格、自动控制、高可靠性的锅炉产品有很重要的意义。更多还原

【Abstract】 The main content of this subject is to reformat the former burner that uses petroleum and adapt it to coal gas combustion. By the study of Flame Propagation Theory and Flame Stability Theory, backfire and yellow flame can be avoided by regulating the speed of flame propagation and exit velocity of mixture current at orifice. In experiment, steady operating point of combustion can be obtained mainly by setting primary air factor and the size of spout. After reformatting the former burner, it possesses many good characteristics, such as the enhancement of combustion efficiency, flame stability, etc. Therefore, on the basis of all of those mentioned above, a small automatic coal gas boiler with 30000 therm an hour has been designed. The structure of this boiler is adopted the type of volume fire-tube, which can satisfy people’s need of high-fiowrate when using hot water and the demand of central heating unit in modern houses. It can also preserve invariable temperature.All in all, the study of the theory and experiment about the technique and device of small automatic coal gas boiler has great signification to the realization of high performance, low price, automatic and high secure boiler.更多还原