China's coal chemical wastewater has characteristics of large discharge

high pollution concentration

difficult treatment and high cost. By adopting the Equilib module of FactSage thermodynamic simulation software

the Gibbs free energy minimization method was used to simulate the gasification process of coal water slurry prepared from coal chemical wastewater. The effects of the concentration of wastewater coal slurry and oxygen-tocoal ratio on the gasification results of coal water slurry were studied. Based on the operation of the actual industrial gasifier

the simulation results were compared with the actual values. The simulation results show that

with the increase of wastewater coal slurry concentration and oxygen-to-coal ratio

the gasification temperature increases

while the effective syngas yield increases and decreases respectively. Under the same working conditions

the effective syngas yield of coal chemical wastewater slurry gasification is higher than that of the ordinary water coal slurry. Coal chemical wastewater can increase the proportion of effective gas in coal slurry gasification. The simulation results of gasification process are in good agreement with the actual working conditions. The research results provide a new clean and efficient coal chemical wastewater treatment method

which provides a theoretical basis for further research on industrial wastewater and coal gasification.