动力煤弹筒发热量快速检测方法  

Rapid detection of bomb calorific value for steam coal

作　　者：蒋涵元 JIANG Hanyuan(Shangyuquan Coal Mine,Shenhua Guoneng（ Shendong Power） Group Co. ,Ltd. ,Hequ 036500,Chin)

机构地区：[1]神华国能(神东电力)集团公司上榆泉煤矿,山西河曲036500

出　　处：《洁净煤技术》2018年第3期118-122,共5页Clean Coal Technology

摘　　要：为实现动力煤选煤厂煤质指标的快速准确检测,上榆泉煤矿洗选中心参考炼焦煤选煤厂常用的灰分快速检测方法,采取精煤胶带机人工采样灰分快速检测和火车商品煤灰分快速检测2种方案进行灰分测定。针对动力煤选煤厂的特点提出弹筒发热量快速检测方法,并对火车商品煤弹筒发热量快速检测和精煤胶带机自动采样弹筒发热量快速检测2种方案的应用效果进行分析。结果表明,灰分快速检测对于动力煤选煤厂存在结果滞后、误差大、指导性差等缺点;采用火车商品煤弹筒发热量快速检测后,化验周期从原来的1 h降至15 min左右,化验时间大幅缩短,但生产参数调整仍相对滞后,无法及时反映煤质的实时变化。精煤胶带机自动采样弹筒发热量快速检测发热量与正常化验发热量的绝对误差平均值仅为-0.12 MJ/kg,相对误差平均值仅为-0.64%,化验周期由灰分快速检测的1 h减至15 min,时效性也由最初的3 d减至2.75 h,增强了化验结果对于生产的指导性。考虑到弹筒发热量快速检测目的是为了指导生产而非结算用,因此其指导生产能够满足要求。In order to achieve rapid and accurate detection of coal quality indicators for steam coal preparation plant, rapid detection of ash in manual sampling of coal belt conveyor and in trains were performed in Shangyuquan Coal Mine Washing Center referred to the rapid ash detection method commonly used in coking coal preparation plants. According to the features of steam coal preparation plant, a rapid detec- tion method for calorific value was proposed, and the application effects of the two schemes, i. e. , rapid detection of bomb calorific value for train commercial products and rapid detection of bomb calorific value by automatic sampling of corrugated coal belt machine, were ana- lyzed. The results show that the rapid detection of ash has disadvantages, such as lagging results, large errors and poor guidance in steam coal preparation plant. After rrapid detection of bomb calorific value for train commercial products ,the test period is reduced from 1 h to about 15 min, and the optimal time is significantly shortened. However, the adjustment of production parameters still lags behind, which can＇t reflect the real-time changes of coal quality. The average absolute error between rapid detection of bomb calorific value by au- tomatic sampling of corrugated coal belt machine and normal detected calorific value is only -0.12 MJ/kg, and the average relative error is only -0.64%. The test period is reduced from 1 h to 15 min,and timeliness is from 3 d to 2.75 h. Taking into account the rapid detection of bomb calorific value is intended to guide the production rather than settlement, above method can meet the requirements.

关 键 词：弹筒发热量 动力煤 水分 灰分 

分 类 号：TQ533.4[化学工程—煤化学工程]