神华科技
神華科技
신화과기
NORTHWEST COAL
2011年
5期
66-69
,共4页
郭治%杜万斗%初茉%吴弋峰
郭治%杜萬鬥%初茉%吳弋峰
곽치%두만두%초말%오익봉
褐煤%干燥%动力学%数学模型
褐煤%榦燥%動力學%數學模型
갈매%간조%동역학%수학모형
Lignite%Drying%Kinetics%Mathematical model
针对褐煤水分以毛细孔吸附水为主的特点,提出干燥过程中可忽略液态水迁移,水分减少主要靠水蒸发为蒸汽再扩散出煤粒的假定,据此建立了煤粒水分缩核干燥动力学模型,并应用于宝日希勒褐煤干燥实验,结果表明能够简便、准确地模拟其干燥动力学行为。
針對褐煤水分以毛細孔吸附水為主的特點,提齣榦燥過程中可忽略液態水遷移,水分減少主要靠水蒸髮為蒸汽再擴散齣煤粒的假定,據此建立瞭煤粒水分縮覈榦燥動力學模型,併應用于寶日希勒褐煤榦燥實驗,結果錶明能夠簡便、準確地模擬其榦燥動力學行為。
침대갈매수분이모세공흡부수위주적특점,제출간조과정중가홀략액태수천이,수분감소주요고수증발위증기재확산출매립적가정,거차건립료매립수분축핵간조동역학모형,병응용우보일희륵갈매간조실험,결과표명능구간편、준학지모의기간조동역학행위。
On the basis of lignite＇s characteristics of adsorbing water by pores,the paper puts forward the assumption that during the drying process liquid water migration can be ignored and the reducing of water is mainly resulted from evaporation out of coal particles.Based on this kinetics model of coal particles drying is established and is applied in Baorixile lignite drying experiment.The results show that it can be a simple and accurate simulation of the drying dynamic behavior.
