煤中全水分不确定度的主要因素评定  

Main factors of uncertainty of total moisture in coal

作　　者：耿松 李宁 刘亚丹 GENG Song;LI Ning;LIU Ya-dan(Leon Inspection Group Co.,Ltd.,Tangshan,Hebei 063611,China)

机构地区：[1]力鸿检验集团有限公司唐山分公司,河北唐山063611

出　　处：《煤炭加工与综合利用》2024年第10期88-90,共3页Coal Processing & Comprehensive Utilization

摘　　要：根据GB/T 211—2017《煤中全水分的测定方法》,利用TC6K型电子天平和PH401型高温试验箱,对试验煤的全水分进行测定并分析测定试验过程中不确定度的主要来源:重复性测定带来的不确定度、煤样称重不确定度、空气干燥后称重不确定度以及仪器设备检定校准结果的不确定度,计算得到合成标准不确定度以及扩展不确定度。通过对各个不确定度分量的分析比较,确定重复性测定引入的不确定度为煤中全水分测定不确定度的主要因素。According to GB/T 211—2017“Determination of Total Moisture in Coal”,the TC6K electronic balance and PH401 high temperature test chamber were used to measure the total moisture of the test coal and determine the main source of uncertainty in the test:repeatability measurement zone Calculate the synthetic uncertainty and expanded uncertainty based on the uncertainty of the coal sample weighing uncertainty,the uncertainty of the weighing after air drying and the uncertainty of the instrument and equipment verification and calibration results.By comparing various uncertainty components,it is determined that the uncertainty introduced by repeatability measurement is the main factor in the uncertainty of the determination of total moisture in coal.

关 键 词：煤炭 全水分 不确定度 重复性测定 

分 类 号：TQ533[化学工程—煤化学工程]