300 MW 循环流化床锅炉改烧低灰分褐煤试验研究

摘要

In allusion to problems such as high bed temperature,uneven distribution of furnace temperature,insufficient cir-culating ash quantity of No.5 and No.6 boiler of Guangdong Yudean Group Cloud River Power Company Ltd.in the process of its changing to burn non-design coal Indonesia lignite,which seriously affect safe operation of the boiler,this research de-velops various combustion optimization experiments under different load working conditions in terms of adjusting grain diam-eter of furnace coal,air quantity of high pressure fluidizing air,total air quantity,matching of primary and secondary air, matching of up and down secondary air,bed pressure,and so on,which effectively solve a series of problems caused by the boiler changing to burn low ash content Indonesia lignite and make it have considerable economic benefit and broad prospect in application.%针对广东粤电集团云河发电有限公司5号、6号锅炉在改烧非设计煤种———低灰分印尼褐煤过程中，出现床温偏高、炉内温度分布不均、循环灰量不足，严重影响锅炉安全运行等问题，从调节入炉煤粒径、高压流化风风量、总风量、一次和二次风配比、上下二次风配比、床压等参数方面，开展了不同负荷工况的各种燃烧优化试验，有效地解决了锅炉由于改烧低灰分印尼褐煤所导致的一系列问题，使改烧低灰分印尼褐煤具有较可观的经济效益和推广应用前景。