| 三相循环流化床内流化固体颗粒的防除垢机理 |
| |
| 引用本文： | 贾原媛,张文胜. 三相循环流化床内流化固体颗粒的防除垢机理[J]. 化学工程, 2010, 38(1) |
| |
| 作者姓名： | 贾原媛 张文胜 |
| |
| 作者单位： | 1. 天津科技大学,工业微生物教育部重点实验室,天津,300457
2. 石家庄铁道学院,土木分院,河北,石家庄,050043 |
| |
| 基金项目： | 天津科技大学人才引进基金(20070443) |
| |
| 摘 要： | 汽液固三相循环流化床蒸发器已应用到盐化、烧碱、中药和造纸等工业中,表现出良好的防除垢性能。文中研究了这种新型流化床蒸发器的防、除垢机理。首先揭示出汽液固三相流剪应力对延长污垢的诱导期起主要作用,并对汽液固三相流剪应力和三相流剪应力增长率进行了定量计算,分析其影响因素。其次从污垢附着和剥蚀的角度,考察了固体颗粒的除垢作用。根据理论分析指出三相流剪应力对污垢附着需要的时间和污垢剥蚀比率的影响,从而计算了剥蚀比例和剥蚀速率及其影响因素。
|
| 关 键 词： | 三相循环流化床蒸发器 结垢 三相流剪应力 防垢 除垢 |
Mechanism of fouling prevention and cleanup by fluidized particles in three-phase circulating fluidized bed |
| |
| JIA Yuan-yuan,ZHANG Wen-sheng. Mechanism of fouling prevention and cleanup by fluidized particles in three-phase circulating fluidized bed[J]. Chemical Engineering, 2010, 38(1) |
| |
| Authors: | JIA Yuan-yuan ZHANG Wen-sheng |
| |
| Affiliation: | 1.Key Laboratory of Industrial Microbiology of Ministry of Education;Tianjin University of Science and Technology;Tianjin 300457;China;2.School of Civil Engineering;Shijiazhuang Railway Institute;Shijiazhuang 050043;Hebei Province;China |
| |
| Abstract: | Vapor-liquid-solid three-phase circulating fluidized bed evaporator was applied in the evaporation of salt,sodium hydrate,Chinese traditional medicine,and paper-making effluent,showing excellent fouling prevention and cleanup.The mechanism of fouling prevention and cleanup in the novel circulating fluidized bed evaporator was investigated.At first,it revealed that the three-phase flow shearing stress played a primary role in extending the induction period of fouling.The three-phase flow shearing stress and ... |
| |
| Keywords: | three-phase circulating fluidized bed evaporator fouling three-phase flow shearing stress fouling prevention fouling cleanup |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
