高水分煤对制粉系统的影响分析及研究  

Analysis and Research on Influence of High Moisture Coal on Pulverizing System

作　　者：党小建[1] 徐志强 吴寿贵 包银全 付龙龙[1] DANG Xiaojian;XU Zhiqiang;WU Shougui;BAO Yinquan;FU Longlong(Xi'an Thermal Power Research Institute,Co.,Ltd.,Xi’an 710054,China;Northern Weijiamao Coal and Power Co.,Ltd.,Ordos 017100,China;Inner Mongolia Shangdu Power Generation Co.,Ltd.,Xilingol 027200,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]北方魏家峁煤电有限责任公司,内蒙古鄂尔多斯017100 [3]内蒙古上都发电有限责任公司,内蒙古锡林郭勒027200

出　　处：《锅炉技术》2023年第3期71-74,共4页Boiler Technology

摘　　要：为解决电厂燃用高水分煤导致磨煤机干燥出力不足问题,对某电厂煤样、一次风率、二次风率、干燥温度、烟风温度等与设计参数进行比对分析。结果表明:入炉煤水分高、热值低是导致干燥出力不足的主要原因。提出了一种利用抽炉烟提高热一次风温度的方案,从而解决制粉系统干燥出力不足,一次风率、二次风率失配等问题。In order to solve the problem of insufficient drying output of coal pulverizer caused by burning high moisture coal in a power plant,the coal sample,the ratio of primary and secondary air,drying temperature and flue gas temperature were compared and analyzed with the design parameters.High moisture content and low calorific value of coal are the main reasons of insufficient drying output.A scheme to increase the temperature of the hot primary air by using the flue gas from the furnace is proposed.Therefore,the problems of insufficient drying output and mismatch of primary and secondary air rate in the pulverizing system are solved.

关 键 词：高水分煤 干燥出力 一次风率 二次风率 热一次风温度 炉烟 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]