超超临界1000MW机组锅炉制粉系统携带大颗粒煤粉问题分析及处理
Thermal Power Generation(2008)
Abstract
华电邹县发电厂超超临界1 000 MW机组锅炉制粉系统在运行中携带大颗粒煤粉,造成飞灰及大渣含碳量偏高。分析认为,其主要原因是磨煤机出口分离器内锥体下料口结构不合理。通过对分离器加装导风槽,制粉系统携带大颗粒煤粉现象完全消除,大渣含碳量由原来的5%~6%降至3.6%,飞灰可燃物由原来的2.2%降至1.2%,效果显著。
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Key words
ultra-supercritical unit,retrofit,coal pulverizer,coal pulverizing system,separator
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