被撤回的出版物: Numerical simulation of combustion process in different heating furnaces (Retracted article. See vol. 230, 2023)

The physical field of different heating furnaces and its related aspects were studied by numerical simulation method. Firstly, by studying the heating furnaces of different shapes, namely triangle furnace, square furnace and cylindrical furnace, it was found that: square furnace and cylinder furnace combustion was more full, high temperature range was larger, different furnace tube heat intensity distribution was more uniform, the amount of heat loss was lower, the outlet NOx emission was higher. By studying the cylindrical furnaces with different dip angles of 95 degrees, 93 degrees, 90 degrees, 87 degrees and 85 degrees, it was found that with the decrease of the dip angle, the inner reflux decreases, the reaction rate decreases, the range of higher temperature increases, the heat absorption of the furnace tube was larger, and the NOx concentration at the outlet was lower.

Automated summary

The study conducted through numerical simulation found that square and cylindrical furnaces have more complete combustion, lower heat loss, but higher NOx emissions; cylindrical furnaces with smaller dip angles have reduced internal reflux, lower reaction rates, higher heat absorption, and lower NOx concentrations at the outlet.