用MCNP模拟中子煤质检测时外水增加对低位热值的影响  

The influence of the external moisture on low calorific value in the coal using MCNP

作　　者：刘德坤[1] 张宏宇[1] 张丽红[1] 谷德山[1] 卜香云[1] 董焕[1] 

机构地区：[1]东北师范大学物理学院,吉林长春130024

出　　处：《东北师大学报（自然科学版）》2012年第2期52-55,共4页Journal of Northeast Normal University(Natural Science Edition)

基　　金：吉林省科技发展计划项目(20040322)

摘　　要：利用MCNP程序模拟了煤样品中外水含量的增加对低位热值的影响.模拟结果显示煤样品随着外水分的增加,C元素的特征γ峰计数不断减少,计算得到的低位热值明显降低.用中子法进行煤质检测时,煤中外水含量越大,对C元素测量结果带来的误差越大,从而对低位热值计算精确度产生的影响越大.The influence of the 7 count of the carbon element peak with increasing external moisture in coal samples was simulated using MCNP code. And discussed the reasons how external moisture content influence the calorific value. Simulation results indicate that with the increasing of external moisture in the coal samples,the 7 count of the carbon element peak dwindling, and the low value reducing. The conclusion is. using neutrons method to analysis coal quality,the more moisture content, the larger error of the measurement results of the carbon element, and will the calculation accuracy of the low calorific value.

关 键 词：中子煤质分析 外水分 低位热值 MCNP 

分 类 号：O571[理学—粒子物理与原子核物理]