基于仿真模型的Shell气化炉挂渣特性研究

Research on Slag Characteristics of Shell Gasifier Based on Simulation Model

建立Shell气化炉渣层动态数学模型,运用该模型对某电站的Shell气化炉进行仿真试验,揭示结渣特性与入口参数间的关系。试验结果表明,给氧量增加后,液态渣层和固态渣层厚度均减小,而固态渣层厚度减小程度比液态渣层大,排渣过程和挂渣特性得到改善;给煤量增加后,液态渣层厚度减小,固态渣层厚度增大,排渣过程和挂渣特性恶化。

Slag layer dynamic mathematical model of Shell gasifier is set up in this paper. Using the model simulation experiments of Shell gasifier in a power plant are preformed in order to uncover the relationships between slag characteristics and inlet parameters. The experiments results show that increasing oxygen decreases the thickness of both liquid slag layer and solid slag layer,solid slag layer becomes thin more obviously than liquid slag layer. Besides,slag discharging process and slag sticking characteristics are improved.After increasing coal,liquid slag layer decreases while solid slag layer thickness increases. This situation is not conducive to discharge slag and deteriorates slag sticking.