Abstract
Steam boilers using the coal as a basic fuel are still one of the most important techniques used to generate electricity in Power Plants. Many activities connected with optimization of steam boilers operation, investigation of combustion efficiency using different fuels, control and reducing pollutants emission are observed. Numerical modeling of large steam boilers using Computational Fluid Dynamic method can be a very way to develop and verify effects of all activities regarding combustion process optimization. Numerical modeling results of the coal combustion process in the front wall coal-fired boiler are presented in the paper. The behavior of the flow of pulverized coal through the burners was analyzed, and the temperature and velocity distribution in the combustion chamber were reproduced in the simulation. Despite the fact that the attention has been focused on boiler simulation at nominal load, it is possible to perform numerical studies concerning the analysis of coal combustion at different boiler loads (minimum load and flexible boiler operation). Analysis of different fuels and their impact on the combustion process, as well as analysis of coal mills operation, coal particles size distribution and they impact on boiler operation can be performed using developed models.
Highlights
Combustion and co-combustion process modeling using CFD tools (Computational Fluid Dynamics) is a known area of research and widely used by the academic and industrial community [1,2,3,4,5,6]
In available CFD codes dedicated to combustion process modeling, several sub-models and methods can be used in the simulation of physic-chemical processes like turbulent flow, radiative heat transfer, pyrolysis, turbulent gas combustion, and char combustion
The mixture fraction/PDF approach is commonly used in Computational Fluid Dynamics and in the modeling of the turbulent reactive flows which are the most popular cases occurring in industrial practice
Summary
Combustion and co-combustion process modeling using CFD tools (Computational Fluid Dynamics) is a known area of research and widely used by the academic and industrial community [1,2,3,4,5,6]. This technique allows conducting low-cost research on the combustion process in large steam boilers. Results obtained in this way are helpful for determining current and identify the optimal boiler operating conditions and their influences on combustion products (CO, CO2, NOx, UBC). One of the goals presented in this paper was a comparison of coal combustion results, obtained by Code_Saturne software, with the results from the most popular commercial software Ansys Fluent
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
