四川地区电煤现状对锅炉运行影响分析

目前四川地区火力发电厂燃用热值很低的劣质煤,绝大部分机组入炉煤热值从当年达到或超过设计值下降了约5 000-6 000 kJ/kg,且部分电煤含硫高达3%-5%,严重影响火力发电正常生产,由于燃用劣质煤种,锅炉运行可靠性、经济性下降,受热面磨损严重,电厂SO2排放严重超标,各火力发电厂正经受着非常严峻的考验。

Influence Analysis of Actual State of Fired Coal on Boiler in Sichuan Province

Presently, inferior coal with low heat value has been fired in some thermal power plants of Siehuan province. Mostly the heat value of the as - fired coal reduces about 5000 - 6000 kJ/kg compared with the design value or beyond the design value of that year, and the sulphur content of some fired coal is up to 3 % - 5 %, which has affected the normal production of thermal power plant. Because of using the inferior coal, the reliability and economy of these borers also falls, the heating surface are worn greatly, and the content of SO2 is still exceeding the standard. Therefore, these plants have stood a severe test.