Highly efficient particulate matter removal by a fluidized-bed-type device operated in continuous regeneration mode
Highly efficient particulate matter removal by a fluidized-bed-type device operated in continuous regeneration mode
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DOI：
10.1016/j.powtec.2017.09.035
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发表时间：
2018
影响因子：
5.2
通讯作者：
Tsuyoshi Yamamoto;Kento Yokoo;Akitaka Kusu;J. Tatebayashi
中科院分区：
文献类型：
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作者：
Tsuyoshi Yamamoto;Kento Yokoo;Akitaka Kusu;J. Tatebayashi
颗粒物（PM）主要由各种燃烧器排放的可燃物组成，随着燃烧技术的改进，PM直径减小。由于通过现有的去除装置有效地收集小PM颗粒是具有挑战性的，我们制造了连续再生型的PM去除装置，利用低温流化床燃烧并依靠粘附力来有效地收集小PM颗粒。对于上述装置，PM收集和燃烧效率随着PM直径的减小而增加，这分别是由于在小规模上观察到的粘附力的作用增加以及分散的PM粘附到床形成颗粒的表面（增强与氧气的接触）。此外，所构建的装置在连续再生模式下操作，其特征在于同时进行PM收集和燃烧。尽管现有的连续再生装置需要600-650 °C的温度用于PM燃烧，但是本文报道的装置可以在400 °C的床温度下操作。
Particulate matter (PM) is mainly composed of combustible substances emitted from various combustors, with combustion technology improvement resulting in decreased PM diameter. Since the effective collection of small PM particles by existing removal devices is challenging, we fabricated a PM removal device of the continuous regeneration type, utilizing low-temperature fluidized bed combustion and relying on adhesion forces for the effective collection of small PM particles. For the above device, PM collection and combustion efficiencies increased with decreasing PM diameter due to the increased role of adhesion forces observed on a small scale and the adherence of dispersed PM to the surface of bed-forming particles (enhancing contact with oxygen), respectively. Furthermore, the constructed device was operated in a continuous regeneration mode, featuring simultaneous PM collection and combustion. Although existing continuous regeneration devices require temperatures of 600–650 °C for PM combustion, the device reported herein could be operated at a bed temperature of 400 °C.