华东理工大学学报（自然科学版）2017，Vol.43Issue(2)：171-177,7.DOI:10.14135/j.cnki.1006-3080.2017.02.004
粉煤气化工业装置煤粉黏附力表征及其流动性评价
Cohesive Force Determination and Flowability Evaluation of Pulverized Coal in Industrial Gasification Unit
摘要
Abstract
In the process of pressurized entrained-flow pulverized coal gasification,pulverized coals often form arching-bridge phenomenon in the lock hopper feeding unit due to the small particle size,the large specific surface area,and the resulting cohesive force among particles.In this paper,by using the industrial demonstration unit of SE (Sinopec-ECUST)-Gasifier pulverized coal gasification as the background,pulverized coal samples with different particle sizes as the research materials,and a combination of a continuum medium approach and a model of particle-particle interaction as the analytical method,a model to predict the cohesive force was built.By comparing the flow properties,the interparticle force as well as its relationship with the gravity of different samples,the effects of mean particle size and fine particle content on the flowability and the discharge process of pulverized coal were revealed.The results predicted by the model were also verified by the visualization platform in the lab and the industrial unit.The research results indicate,as the mean particle size decreases and the fine particle content increases,the flowability of pulverized coal becomes weaker and there is a transition from arching-bridge to arching-free flow during the discharge.The research work can provide a useful reference for improving the flowability of feeding pulverized coal and enhancing the stability of pulverized coal feeding system.关键词
煤粉/流动性/煤气化/黏附力Key words
pulverized coal/flowability/coal gasification/cohesive force分类
化学化工引用本文复制引用
丁家海,陆海峰..粉煤气化工业装置煤粉黏附力表征及其流动性评价[J].华东理工大学学报（自然科学版）,2017,43(2):171-177,7.基金项目
中国石化集团科技项目(SE煤气化示范装置系统优化(415022)) （SE煤气化示范装置系统优化(415022）
