化工进展2023，Vol.42Issue(12)：6141-6156,16.DOI:10.16085/j.issn.1000-6613.2023-0084
基于微米级颗粒临界沉积/剥离标准的研究进展
Research progress of critical deposition/stripping standards based on micron-sized particles
摘要
Abstract
It is a thorny problem for micro-particle deposition based on gas-solid flow.Particle deposition is a common physical phenomenon but with more negative impact,such as the wear of turbine blades caused by sand particles,scale corrosion caused by fly ash particles on boiler heat exchange surface and so on.Although the continuous optimization of soot blowing scheme has greatly reduced the negative impact of fly ash deposition,there are still some uncontrollable problems.Therefore,it is of great significance to summarize and analyze the law of particle adhesion behavior to suppress particle deposition in engineering.Based on the main background of boiler fly ash deposition,this paper expounded the mechanism and characteristics of particle adhesion dominated by inertial impact,reviewed the research work on critical deposition criteria in recent years,focused on the analysis of the influence of deposition factors on the criteria of particle adhesion/rebound,and summarized the main criteria of particle detachment.By comparing the problems and connections of relevant criteria horizontally,the research status and existing problems of particle adhesion criteria was explained,which provided technical and theoretical support for the effective suppression of boiler deposition and the promotion of particle detachment theory.关键词
微米颗粒/沉积模型/临界捕集速度/恢复系数/临界剪切速度Key words
micro-particles/deposition model/critical capture velocity/restitution coefficient/critical shear velocity分类
能源科技引用本文复制引用
邵宏勋,谢俊,桂玉双,李润东..基于微米级颗粒临界沉积/剥离标准的研究进展[J].化工进展,2023,42(12):6141-6156,16.基金项目
国家自然科学基金青年基金(51906164). （51906164）
