摘要
利用高压非均匀电场的作用研究流动煤粉正电晕荷电特性,为能够迅速找到影响煤粉荷质比各因素的最优工艺条件,在前期单因素实验的基础上,确定了荷电电压、粒径和给粉浓度等主要影响因素.采用正交实验法获得荷电电压、粒径和给粉浓度等主要影响因素的最佳工艺条件,并对结果进行方差分析.根据分析结果,对重要因素进行最小二乘回归,得到煤粉荷质比的实验回归公式.
By means of non-uniform electric field with DC high-voltage,researches on the positive corona charging characteristics of flowing pulverized coal.In order to find out the optimal technological condition of pulverized coal＇s charge-to-mass ratio and its influencing factors,based on single-factor experiments,the main factors as the charged voltage,mean sieving particle size and powder feed concentration are determined.The best technological conditions have been pre-sented by orthogonal test,and the results have been examined by variance analysis.According to the analysis results,obtained regression formula of pulverized coal＇s charge-to-mass ratio and its influencing factors by using least square regression analysis.
出处
《煤炭转化》
CAS
CSCD
北大核心
2010年第4期5-8,共4页
Coal Conversion
基金
国家自然科学基金资助项目(50476077).
关键词
电晕荷电
煤粉
荷质比
正交实验
回归分析
corona charge
pulverized-coal
charge-to-mass ratio
orthogonal experiment
regression analysis
