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| 1 | 加压流化床气化飞灰造粒及其燃烧特性研究显示文摘流化床气化飞灰造成严重粉尘污染,也大大降低气化效率。文中以U-GAS加压气化炉的飞灰为原料,探讨了圆盘造粒和对辊造粒的工艺条件及造粒产品用作锅炉原料的可行性。结果发现飞灰和造粒配煤以质量比1∶1造粒为宜,圆盘造粒要求水质量分数不低于30.7%,对辊造粒要求较低。造粒产品与锅炉原煤的热重曲线均呈'Z'字形,拐点温差小于15℃,着火温度相差8℃,燃尽温度相差20℃,综合燃烧特性指数分别为11.37×10^(-7)和16.43×10^(-7),燃烧性能差别小,可作为锅炉原料,避免了飞灰单独入炉燃烧造成的烟道超温现象。2种工艺经济性均较好,圆盘造粒产品含水量高,须设置干燥及冷却设备,对辊造粒如果成型前水分较小,可以省去干燥工段,大大减少投资,是首选的造粒工艺。 | 程相龙 郭晋菊 曹敏 马名杰 郭卫杰 董文博 | 2019 | 化学工程2019，47，4： | 3 |
| 2 | 气化飞灰液压造粒及燃烧特性热重研究显示文摘将加压流化床气化飞灰造粒后用作锅炉原料.探讨液压造粒的工艺条件及作为锅炉原料的可行性.结果表明:飞灰和造粒配煤质量比为1∶1,水分不大于20%(质量分数,下同),黏结剂不大于6.5%为宜(以造粒前混合物总质量为基准);在80%N_2+20%O_2气氛下,造粒产品与锅炉原煤的热重曲线均呈'Z'字形,着火温度仅相差10℃,燃尽温度相差45℃,可燃性指数分别为2.94×10^(-5)和7.10×10^(-5),综合燃烧特性指数分别为10.47×10^(-7)和16.43×10^(-7),燃烧性能差别小.造粒产品的使用避免了飞灰单独入炉燃烧造成的烟道超温现象,可作为锅炉原料;按照年处理飞灰20万t,飞灰、造粒配煤、造粒产品分别按20元/t,120元/t,150元/t计算,项目需投资约930万元,年净利润186万元,税后静态投资回收期约5.4年,经济效益显著. | 程相龙 郭晋菊 曹敏 马名杰 郭卫杰 董文博 吕颖捷 | 2018 | 煤炭转化2018，41，6： | 1 |
| 3 | Experimental study and Shannon entropy analysis of pressure fluctuations and flow mode transition in fluidized dense phase pneumatic conveying of fly ash显示文摘The objective of this study was to relate experimental pressure fluctuation behavior to the transition in mode of flow observed in fluidized dense phase pneumatic conveying of fly ash.Shannon entropy and wavelet analysis were utilized to extract features of the flow regimes.Daubechies db4 wavelet analysis of pulsating air pressure revealed that the flow mechanism of fly ash in a fluidized dense phase possessed non-steady characteristics associated with gradual aeration of dunes along the direction of flow.Variations of Shannon entropy values along the length of the pipeline were assessed to determine the location at which the flow converted from dense to dilute phase mode.The effects of conveying parameters and specific power consumption on Shannon entropy and variations of the local power consumption coefficient are discussed. | Yassin Alkassar Vijay KAgarwal RKPandey Niranjana Behera | 2020 | Particuology2020，18，2： | 1 |
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