Project Introduction: I. Combustion System Optimization and Key Auxiliary Equipment Energy-Saving Technologies and Applications under Diverse Coal Quality Experimental research on the impact of coal variety changes on the economic performance of the entire plant; Combustion system transformation to expand coal variety adaptability; Design for reducing flue gas temperature; Technical transformation to reduce carbon content in fly ash; Enhanced and expanded transformation of the induced draft fan; Transformation of burners. II. Technical transformation of precise sampling of coal entering the furnace Through the technical transformation of precise sampling of coal entering the furnace, the coal samples taken by the sampler are representative, and there is a smaller deviation between the calorific value of the coal entering the furnace and the coal received at the plant, thereby improving the precision of coal sampling. This enhances the economic benefits of unit operation and reduces power generation costs. III. Online Detection and Optimization of Boiler Water Quality System The online monitoring and optimization operation technical transformation of boiler water quality is to use an online continuous measurement control method to monitor the condition of boiler water quality. This achieves precise blowdown or reasonable optimization of blowdown. IV. Ball Mill Automatic Ball Selection Energy Saving System: The ball mill steel ball automatic selection device solves the problem that coal mills cannot operate at full capacity for a long time, achieving the optimal proportion of steel ball loading in the mill. V. Technical transformation of coal powder sampling device in thermal power plants: The sampling device can achieve sampling at different points within the pipeline, which means it must have a telescopic mechanism. It should also be capable of truly isokinetic sampling, fully considering the uneven distribution of fineness inside the coal powder pipeline itself, and the fineness of the sampled coal should correspond to that of the standard coal powder sampling gun without deviation.