煤高效制合成气装置传热特性的模拟研究

Based on the Eulerian two-fluid model and with the use of numerical simulation software Fluent, the paper simulate the coal gasification plant’s operation state without chemical reactions involved, and mainly discuss the temperature and the interstice distribution in the coal gasification plant, under the condition of different inner cylinder radius (Ri) and outer cylinder radius (Ro). After reasonably simplifying the theoretical model and rationally dividing the grid, using Fluent (we) successfully obtain the distribution of the temperature and the solid particulate after the plant runs for 15 seconds. Through analysis and comparison of Fluent data, (we) finally conclude that, at the parameters Ro / Ri = 2, Ro / Ri = 3 and Ro / Ri = 5, the temperature inside the separator reaches the required preheating temperature of the coal approximately, and in the 2 <Ro / Ri <3, the plant’s gasification part can achieve a better temperature for gasification and the fluid state is ideal at the same time.