Prospects for the development of independent power supply systems on the basis of solid fuel thermal conversion technology

• Published in: Thermal engineering 2015, Vol.62 (5), p.359-364
• Main Authors: Sultanguzin, I. A., Fedyukhin, A. V., Kurzanov, S. Yu, Gyulmaliev, A. M., Stepanova, T. A., Tumanovsky, V. A., Titov, D. P.
• Format: Article
• Language: English
• Subjects: Boiler Auxiliary Equipment; Burners; Engineering; Engineering Thermodynamics; Heat and Mass Transfer; Power Plant Fuel; Steam Boilers
• ISSN: 0040-6015; 1555-6301
• DOI: 10.1134/S0040601515050110

Theoretical principles of using solid fuel for organizing independent power supply to small settlements and industrial consumers are considered. Thermogravimetric experiments have been carried out for a few types of wood with determining the universal kinetic parameters characterizing the pyrolysis process. A procedure for describing the solid fuel thermal decomposition process has been proposed that is based on writing the equations of four independent parallel thermal decomposition reactions for each component of the initial raw material. A software package has been developed using which the calorific value, composition, and volume of the gas produced in the thermal conversion of solid fuels can be estimated. The impact of operating parameters on the synthesis gas composition has been evaluated. It has been found that increasing the thermal conversion temperature results in a higher calorific value of the obtained gas per unit weight of the feedstock. A qualitative and quantitative comparison of the computational model and the results obtained during experimental studies on the existing gasifier has been carried out. It is shown that the parameters of gas obtained on the test bench are consistent with the calculated ones in both the amount of gas and its chemical energy. The combined-cycle power plant flow chart involving the biomass gasification process has been numerically simulated in the Aspen Plus computer program, and calculations aimed at determining the optimal operating parameters of different thermal process circuit components and of the entire CCP system were performed.