Assessing the impact of integration of hydrogen blending from municipal solid waste and biomass with gas turbine on performance of traditional coal power plants

• Integration of MSW gasification with conventional coal and biomass systems enhances overall power generation and hydrogen production while promoting sustainable waste management. • System power generation increases from 300 MW to 877 MW. • All proposed scenarios exhibit markedly lower CO₂ emissions compared to a traditional coal power plant , highlighting their environmental and thermodynamic advantages. • MSWHIRBGT2 delivers the highest power generation , while MSWHIRCC achieves the best energy and exergy efficiencies. • Hydrogen injection significantly improves combustion characteristics , reducing CO emissions from 2947 to 761.6 kg/h, aided by lower boiler temperatures. Producing hydrogen from municipal solid waste (MSW) presents a transformative and sustainable solution for waste management. This paper presents a system that integrates MSW gasification with a traditional coal power plant (TCPP), along with biomass gasification and a gas turbine. It also incorporates a water recovery Rankine cycle (RC) that utilizes flue gas for electricity generation, making it a key strategy for cleaner energy and effective waste disposal. The study examines three scenarios: MSWHIRBGT1, MSWHIRBG, and MSWHIRBGT2. In the MSWHIRBGT2, electricity generation reaches 877 MW. This achievement results from the injection of hydrogen from MSW gasification into the TCPP boiler, combined with advanced biomass technologies and flue gas recovery from TCPP. MSWHIRBGT2 achieves energy and exergy efficiencies of 46.9 % and 43.05 %, making it the optimal choice for enhancing power generation in future energy solutions. All scenarios resulted in reduced CO2 emissions compared to a conventional coal-fired power plant of the same capacity, highlighting the proposed system's contribution to a cleaner environment. Furthermore, the impact of different percentages of injected hydrogen on the concentrations of CO, CO2, H2, H2S, SO3, and SO2 in the flue gas is analyzed. Results show that higher hydrogen injection reduces CO by 81 % and H2 by 94 %, while increasing SO3 and CO2 levels by 96 % and 39 %, respectively. This demonstrates the environmental benefits of the technologies being implemented.