Page 93 - 电力与能源2023年第三期
P. 93
第 44 卷 第 3 期 电力与能源
2023 年 6 月 287
DOI:10.11973/dlyny202303018
火电厂燃煤全自动制样机的运行特性
杨茂林 1,2 ,孙利娟 1,2 ,吴 伟 ,崔 凯 ,黄鑫亮 ,武文亮 1
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(1. 华能沁北发电有限公司,河南 济源 459011;2. 中国华能集团有限公司河南分公司,河南 郑州 450018)
摘 要:为了解决全自动制样机制样效率低、样品代表性差的问题,推进它的技术进步和在火电厂的应用,分
析了实际应用中制样机的延时原因,以及影响制样效率的关键因素。通过质量守恒试验和空载试验,探明了
全自动制样机各单元内的积煤、积情况,通过计算备份样、存查样、分析样热值、硫分的重复限定值,分析了样
品的代表性和稳定性。设备频繁故障是造成单个样品制样延时的主要原因。积煤积粉全流域存在,一级破碎
单元最多,三级破碎单元次之,二级破碎单元最少。备份样和存查样化验指标的高度一致性,说明全自动制样
机生成的样品具有良好的代表性。三级破碎单元内的筛上物残留是导致分析样化验结果失真的主要原因,同
时也是限制全自动制样机应用的主要因素。
关键词:火电厂;燃煤全自动制样机;制样效率;积煤积粉
作者简介:杨茂林(1997—),男,硕士,工程师,主要从事热力电厂运行、管理相关工作。
中图分类号:TK9 文献标志码:A 文章编号:2095-1256(2023)03-0287-06
Operation Characteristics of Coal Automatic Sampling Machine in Thermal Power Plant
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YANG Maolin ,SUN Lijuan ,WU Wei ,CUI Kai ,HUANG Xinliang ,WU Wenliang 1
(1.Huaneng Qinbei Power Generation Co.,Ltd.,Jiyuan 459011,Henan Province,China;
2.Henan Branch Company,China Huaneng Group Co.,Ltd.,Zhengzhou 450018,Henan Province,China)
Abstract:In order to solve the problems of low sample efficiency and poor sample representativeness of auto⁃
matic sample preparation mechanism,the technical progress and application in thermal power plant were pro⁃
moted. This paper analyzed the reasons for the delay of prototyping in practical use and the key factors that af⁃
fected the efficiency of prototyping. Through the conservation of mass test and no-load test,the coal and powder
accumulation in each unit of the automatic prototype was proved,and the representativeness and stability of the
sample were analyzed by calculating the repeated limits of the calorific value and sulfur content of the backup
sample,the storage sample and the analysis sample. The frequent failure of equipment was the main reason of
single sample preparation delay. Coal and powder accumulation existed in the whole system with the most primary
crushing units,the second tertiary crushing units and the least secondary crushing units. The high consistency be⁃
tween the backup sample and the stored sample indicates that the sample generated by the automatic sampling ma⁃
chine had good representativeness. The residue on the screen in the tertiary crushing unit was the main reason
leading to the distortion of the analysis sample test results and also the main factor limiting the application of the
automatic sampling machine.
Key words:thermal power plant,coal automatic sampling machine,sample preparation efficiency,accumulation
of coal and powder
全自动制样机的使用不仅能够减少火电厂人 需 燃 煤 种 类 。 烟 煤 、高 热 值 煤 、低 硫 煤 、经 济 煤
员定额,减轻制样人员的劳动强度,同时其生成样 种 [3-4] 的合理库存结构,是火电厂实现负荷灵活性
品的化验指标是火电厂燃煤采购的结算依据。因 调节的基础 。燃煤采购是火电厂最大的成本支
[5]
此,研究影响制样效率的关键因素,分析样品的稳 出,占总生产成本的 60%~80%。面对新能源电
定性和代表性对火电厂进行煤质管理具有重要意 力迅猛发展和煤价高企的双重压力,提高煤质管
[2]
[1]
义。电力现货市场 和辅助服务市场 的运营,加 理水平,严控燃煤采购成本,已成为火电厂节约成
[6]
剧了火电行业之间的竞争,同时丰富了火电厂所 本、扭亏为盈的重要抓手 。火电厂的燃煤采购

