Simulation of the effects of blending out-furnace and in-furnace on combustion performance under low load

Yang Wang; Jun Zhang

doi:10.1117/12.3032232

19 June 2024 Simulation of the effects of blending out-furnace and in-furnace on combustion performance under low load

Yang Wang, Jun Zhang

Proceedings Volume 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) ; 1317205 (2024) https://doi.org/10.1117/12.3032232
Event: 9th International Symposium on Energy Science and Chemical Engineering, 2024, Nanjing, China

Abstract

In order to study the difference in combustion performance between out-furnace blending and in-furnace blending under low load, the combustion of a 350MW tangential boiler under the conditions of lignite blending with different proportions of bituminous coal was simulated and analyzed based on Fluent software. The results show that the blending of bituminous coal can increase the combustion temperature and is conducive to the complete combustion of pulverized coal. When blending outside the furnace, the temperature change in the furnace is gentler, which is safer than in-furnace blending. Under blending conditions, lignite and bituminous coal compete for O₂ seriously, which is most obvious under 40% coal blending conditions. Blending outside the furnace, especially in the 40% working condition, has a good effect on reducing NO_x emissions. However, In-furnace blending has side effects and increases NO_x emissions by 30%.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yang Wang and Jun Zhang "Simulation of the effects of blending out-furnace and in-furnace on combustion performance under low load", Proc. SPIE 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) , 1317205 (19 June 2024); https://doi.org/10.1117/12.3032232

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