ANALYSIS OF DECREASING SYSTEMATIC ERROR FOR PLANT-INCOMING COAL SAMPLING

SUN Bing; HU Yue-hong; YANG Ying-chuan 1.Chengde Petroleum Senier Professional College

doi:10.19666/j.rlfd.2007.09.004

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ANALYSIS OF DECREASING SYSTEMATIC ERROR FOR PLANT-INCOMING COAL SAMPLING

Thermal Power Generation Issue 9, Pages: 16-19(2007)

更新时间：2025-09-28

- ANALYSIS OF DECREASING SYSTEMATIC ERROR FOR PLANT-INCOMING COAL SAMPLING
- 作者机构：
  
  1. 承德石油高等专科学校
  2. 长春热电一厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2007.09.004
  CLC： TM621
- Published：2007
- 稿件说明：
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SUN Bing, HU Yue-hong, YANG Ying-chuan 1.Chengde Petroleum Senier Professional College. ANALYSIS OF DECREASING SYSTEMATIC ERROR FOR PLANT-INCOMING COAL SAMPLING[J]. Thermal Power Generation, 2007, (9): 16-19.
DOI：

SUN Bing, HU Yue-hong, YANG Ying-chuan 1.Chengde Petroleum Senier Professional College. ANALYSIS OF DECREASING SYSTEMATIC ERROR FOR PLANT-INCOMING COAL SAMPLING[J]. Thermal Power Generation, 2007, (9): 16-19. DOI： 10.19666/j.rlfd.2007.09.004.

摘要

现场调查发现

入厂煤质检测存在较大的采样系统误差

通过对比试验

提出了减小这些误差的方法:(1)取样深度由原来的0.4m改为0.6m;(2)入厂煤粒度≥100mm时

子样质量定为≥7.5kg。采用这一方法后

全水分测量的系统误差为-0.1%

干燥基高位发热量测量未出现系统误差。所述方法可供相关标准修订时参考。

Abstract

From investigation in the field

it has been discovered that a big systematic error existing in coal sampling for quality control of plant -incoming coal.After analysis of the causes

some improving methods have been put forward as follows:(1)changing the sampling depth from 0.4m to 0.6m;(2)setting the mass of subsample to be≥7.5 kg in case the particle size of plant-incoming coal to be≥100mm. After adopting said methods

systematic error of measuring the total moisture content to be-0.1%

and no systematic error occurred in measuring the high calorific value.The said methods can provide reference for revising related satandards.

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