Abstract: Based on summarization and digestion of the boiler combustion adjustment technology, aiming at the operation features and technical characteristics of the 300MW subcritical boiler of Yunnan Huadian Kunming Power Generation Corporation Limited, the operation management and the operation adjustment were enhanced. The experiments and comparisons in the topics, such as the reducing the NOx emission, the burning of poorgrade coal, the enhancing the stability of the boiler operation and others, were carried out, and the various indicators were satisfied the requirements of environment protection emission standards, and the better results were obtained.

Key words: boiler combustion, nitrogen oxide (NOx) emission, experiment condition, data analysis