Development of a Mathematical Model for Solid Fuel Gasification and Its Sensitivity Analysis

Within the framework of this study, a brief review of the gasification technology was carried out, the best types of blowing agents and gasification methods used in terms of efficiency and environmental safety were identified, and a mathematical model of a steam-oxygen gasifier was developed in the MS Excel software package. The authors paid special attention to the consideration of the effect of changing the input parameters of the syngas, such as the temperature and relative mass flow rate of steam and oxygen, on the heat of the combustion of the produced syngas. As a result of the research, methods for increasing the heat of the combustion of the syngas and the conditions for using the described methods were formulated. The work also revealed the optimal ratios of the blowing agents and solid fuel supplied for gasification and presented the output parameters of the produced generator gas, including the heat of combustion of the gas, the gas temperature, and the gasification efficiency. Computer simulation models of the gasifier and gasification process were the basis for the analysis of a combined cycle (CC) facility with an integrated solid fuel gasifier. The heat flow thermodynamic analysis shows that the gasification steam bleeding from the turbine is the best solution for the improvement of cycle efficiency.

Automated summary

This study provides a brief review of gasification technology and identifies the best blowing agents and gasification methods for improved efficiency and environmental safety. A mathematical model of a steam-oxygen gasifier was developed, considering the impact of input parameters on combustion heat. The research presents methods to enhance the combustion heat of syngas and optimal ratios of blowing agents and solid fuel for gasification, as well as output parameters of the produced generator gas.