Numerical Simulation of Thermal Stress Field of Water-cooled-wall Pulverized-coal Gasifiers

作者：WEI Yi,YANG Wengang,QIN Hongbin,GUO Xiaojun,LI Hongxia,WANG Yanni

摘要：the stress field in the gasifier operation to research the damage of refractories and slag layer caused by the thermal stress.The results reveal that:(1)the maximum stress of water-cooled-wall gasifier appears at the interface between anchor nails and refractories as well as the interface between refractories and the slag layer,and the maximum stress of slag layer appears on the surface of the slag layer;(2)the increase of slag layer thickness can significantly reduce the thermal stress at the interface between anchor nails and refractories,but increase the thermal stress between slag layer and refractories;(3)when the thermal conductivity is 2-6 W m^-1 K^-1,the thermal stress increases rapidly with the increase of the thermal conductivity,but when the thermal conductivity is 6-10 W m^-1 K^-1,the thermal stress is basically stable;(4)the higher the cooling rate,the faster the decreasing speed of the temperature and thermal stress.

发文机构：State Key Laboratory of Advanced Refractories

关键词：water-cooled-wallpulverized-coalGASIFIERSTRESSfieldNUMERICALsimulation

分类号： TQ1[化学工程]