Application of low thermal stability and low-rank coal in crushed coal pressurized gasification process
HAN Yufeng
DING Jianchu
Abstract：In order to improve the effects of low thermal stability and low-rank coal in crushed coal pressurized gasification, adopt the crushed coal pressurized gasification processes in Henan and Xinjiang Province,investigate the influence of thermal stability of low-rank coal on crushed coal pressurized gasification. The results show that single gasifier oxygen load can only reach about 70% of design load when use low stability and low-rank coal,about 40% less than the high stability and low-rank coal.Thermal stability of coal is lower and the higher dust content in raw gas affects the gas-water separation,it also influents the transform and follow-up processes.The effects of low thermal stability and low-rank coal in crushed coal pressurized gasification can be improved through investigating the thermal stability of different particle size of coal,determining minimum grain size of pulverized coal into the gasifier and the particle size of pulverized coal in the crushed coal pressurized gasification process,improving the dust removal system,selecting the reasonable gasification pressure,com-bining gasification process.
Keywords：thermal stabilitylow-rank coalcrushed coal pressurized gasificationgrain sizeoxygen loadpulverized coal
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 42-44 )