热声型自激励脉动燃油锅炉研究

可控脉动燃烧因其周期性的强烈气流扰动,有很强的强化燃烧、强化传热作用,而且NOx和烟尘排放低,是一种清洁燃烧技术。介绍了改进型Rijke脉动燃烧器的工作原理、热力系统及降噪措施,并与常规0.5 t/h燃油锅炉进行了比较。结果表明,脉动燃油锅炉与燃油锅炉体积、形状相当,但炉膛容积、辐射受热面积,对流传热面积分别减少了55.0%、44.5%、13.5%,而传热效率提高30%强,出力达到0.7 t/h,热效率为86%,提高了2%,噪声<70 dB。

STUDY ON BOILERS WITH THERMALACOUSTIC TYPE SELFEXCITED FUEL OIL PULSATION

The controllable pulsating combustion has very strong effect on intensifying the combustion and heat transfer for its periodic violent gas flow turbulence,and is a clean combustion technology with low emission of pollutants NO_x and smoke.The working principle,thermal system,and noise removal measures of modified Rijke pulsating burners have been presented,and comparison with traditional 0.5 t/h oil-fired boiler being carried out.Results show that the volume and shape of fuel oil pulsating boiler are similar to that of traditional oil-fired boiler,however,the furnace volume,the radiation heating surface,and the convection heating surface has reduced 55%,44.5%,and 13.5% respectively,while the heat transfer efficiency has enhanced more than 30%,the output capacity reaches 0.7 t/h,thermal efficiency to be 86%,heightening 2%,and the noise level<70 dB.