Combustion Optimization Of Swirl Coal Burner

Coal is the main source of energy in China, thermal power is the main source of electricity. Optimization of pulverized coal-fired burner is very important for large-scale boilers to achieve high efficiency combustion and low NOx emissions. The present thesis was aimed at the OPCC-swirl burner applied in 2*600MW coal-fired boilers of Guang'an power plant third term expansion project .In order to solve the problems founded in application combustion tuning and optimization experiments were performed to study .In the course of practical operation of the boiler unit, low combustion efficiency, fly ash and the carbon content of the slag, NOx emissions of steam temperature and ultra-high temperature and other issues turned up. These problems are mainly due to the difference between the coal in operation and design, the burner operating parameters used without detailed optimization. So the burner cannot achieve design performance. In this paper, theAuthor analyzed the structure, characteristics and performance of the commonly used types of advanced swirl burner. The possible problems in the application of the swirl burner and the research and application of low NOx swirl combustion technology are also be analyzed. To address the above issues, this paper determined reasonable operating parameters by combustion tuning and optimization experiments under 530MW,600MW and different coals. Through the combustion tuning and optimization experiments, the major economic indicators which can reflect the overall performance such as the boiler efficiency, pollutant emissions ,the minimum stable combustion load meet the design value. These experiments solve the existing problems before in the operation. The burner and the overall performance of the boiler meet the design standards and reflect good economic and environmental performance. At last this paper achieved the purpose of the topic. This has a certain reference value for similar burner.