通过气力与机械力的联合作用,分析双组分颗粒在干燥器内的扰动流态化行为,考察颗粒的组分配比、静止床层高度、机械力作用强度等因素对双组分物料在干燥器内的流体力学性质及传热性质的影响,采用因次分析方法得出相应的表面传热系数关联式。研究结果表明,机械力场的加入,有效改善了双组分颗粒的流化状态及气固间传热性质,为炼焦煤调湿分级一体化工艺技术工业化应用提供技术支撑。
A experiment study on the characteristics of fluidizing behavior of binary particles in disturbance mixed dryer was carried out by combining gas with mechanical strength.The factors such as binary particle size,bed height and mechanical strength intension influence on characteristics of flow and heat transfer were analyzed,and the relative formula of heat transfer coefficient was obtained by dimensional analysis method.The characteristics of flow and heat transfer were improved effectively through mechanical strength action.It provides technical support for wetness-adjusting and grading integration technology of coking coal in industrialization area.
参考文献
| [1] | I.F.戴维森;D.哈里森.流态化[M].北京:科学出版社,1981 |
| [2] | 丛义春,徐春明,高金森.气固流化床中双组分颗粒分离的研究进展[J].石化技术,2004(04):53-56. |
| [3] | Rowe P N;Nienow A W .Particles Mixing and Segregation in Gas Fluidised Beds[J].Powder Technology,1976,15(06):141. |
| [4] | ZabrodskyS S.Heat and Mass Transfer[J].Intern J,1963(06):23. |
| [5] | Clift R;Crace J R.Continuous Bubbling and Slugging in Flu-idization and Edition[M].London,UK:Academic Press,1985 |
| [6] | 郑文华.日本室兰焦化厂的煤预热和煤调湿[J].燃料与化工,2002(01):1-3. |
| [7] | 李九林.煤调湿技术开发及在焦化厂的应用[J].煤化工,2005(01):34-36. |
| [8] | 国井大藏;列文斯比尔.流态化工程[M].北京:中国石化出版社,1977 |
| [9] | 于才渊,张玉,张引.搅拌流化床干燥器流体力学性能研究[J].化学工程,2006(08):28-30. |
| [10] | Godard J K;Richardson J F.The Use of Slow Speed Sturring to Intiate Particulate Fluidization[J].Chemical Engineering Science,1969(24):194. |
| [11] | Sturn Watano;Nan Yeh;Kei Miyanami .Drying of Granules in Agitation Fluidized Be[J].Journal of Chemical Engineering of Japan,1998,31(06):908. |
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