Integration of in-situ CO2-oxy coal gasification with advanced power generating systems performing in a chemical looping approach of clean combustion

摘要: Abstract Underground coal gasification (UCG) is a clean technology to utilize deep resources effectively. In-situ CO2-oxy may eliminate the operational difficulty of steam process and CO2 (greenhouse gas) Furthermore, it necessary convert gasified energy from UCG into combustion for an end-use. In order achieve efficient power production, present work investigates thermodynamic feasibility integration based with generating systems operating in chemical looping (CLC) product gas. The use CO enriched syngas O2/CO2 reduces heat balance between fuel reactor air nickel oxygen-carrier CLC system. Thermodynamic analyses have been made various routes generation such as subcritical, supercritical ultra-supercritical boiler turbines gas integrated It shown, on mass analysis, that system penalty carbon capture storage (CCS) significantly. A net thermal efficiency 29.42% estimated CCS incorporated system, which operates subcritical condition turbine plant. found proposed increases 35.40% condition. effect temperature combined cycle plant investigated. 42.53% can be obtained at 1200 °C.