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首页> 外文会议>Proceedings of the ASME power conference 2009 >IMPROVEMENT OF THE PERFORMANCE OF A UTILITY OIL FIRED BOILER BY MODIFYING THE DESIGN OF BURNERS AND ATOMIZERS
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IMPROVEMENT OF THE PERFORMANCE OF A UTILITY OIL FIRED BOILER BY MODIFYING THE DESIGN OF BURNERS AND ATOMIZERS

机译：通过修改燃烧器和雾化器的设计来改善通用燃油锅炉的性能

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Reduction of both atomizing steam and participate emissions were investigated in a 350 Mwe utility boiler. A residual fuel oil was dispersed as a fine mist into the furnace with sixteen atomizers of internal turbulent chamber type.rnThe existing atomizers were replaced by Y-jet type atomizers. To do this, full scale prototypes were designed and tested in a cold model rig using mineral oil as the fuel and compressed air as the atomizing medium. The oil droplet size distribution was measured from a single port of each prototype by using a Malvern particle sizer. The prototype to be tested in the power station was selected based on the smallest oil droplets produced along with lower compressed air consumption.rnIn the power station, the burners were modified to install the new design of Y-jet atomizers. Field tests were conducted at 50, 75 and 100% load. Atomizing steam was measured, as well as particulate emissions and the furnace exist flue gas temperature.rnWith the Y-jet atomizers, the atomizing steam was reduced 55% with respect to the original atomizers; the unburned carbon particles were reduced by a maximum of 50%, the furnace exit gas temperature was similar between the two type of atomizers and no side effects were observed in the boiler.
机译：在350 Mwe的多用途锅炉中研究了减少雾化蒸汽和减少排放的方法。残留的燃油以细雾状分散到带有16个内部湍流室型雾化器的炉子中。rn将现有的雾化器替换为Y型喷射雾化器。为此，在使用矿物油作为燃料，压缩空气作为雾化介质的冷模型钻机中设计并测试了全尺寸原型。通过使用Malvern粒度仪从每个原型的单个端口测量油滴尺寸分布。根据产生的最小油滴和较低的压缩空气消耗量选择了要在电站中测试的原型。在电站中，对燃烧器进行了改装，以安装Y型喷射雾化器的新设计。在50％，75％和100％的负载下进行了现场测试。测量了雾化蒸汽，以及颗粒物的排放和炉膛中烟气的温度。rn使用Y型喷射雾化器，雾化蒸汽相对于原始雾化器降低了55％；两种类型的雾化器之间未燃烧的碳颗粒最多减少了50％，炉膛出口气体温度相似，并且在锅炉中未观察到任何副作用。

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