Process simulation of biomass looping gasification with the integrated gasification combined cycle (BCLG-IGCC) system: coupled-parameter effect and thermodynamic analysis

The biomass chemical looping gasification with the integrated gasification combined cycle (BCLG-IGCC) power generation system synergistically integrates biomass chemical looping gasification (BCLG) technology and the integrated gasification combined cycle (IGCC) system. This comprehensive integration presents an efficient way for producing high-caliber synthesis gas, thereby exemplifying a sophisticated, environmentally conscious, and highly efficient power generation technique. This research establishes and investigates the model of the BCLG-IGCC system and investigates the gasification performance of the BCLG system under four operational parameters: various biomass fuels, gasification temperature (T_FR), steam-to-biomass ratio (ε), and oxygen carrier-to-biomass ratio (OC/B). The power generation of the BCLG-IGCC system was researched under different load (i.e., 50%, 75%, and 100%). Energy and exergy analyses were conducted on the system to assess the thermodynamic performance. The energy efficiency of the BCLG-IGCC system is 42.7%, exceeding the typical energy efficiency range of 40–42% associated with traditional IGCC systems.