Patent ID: 8110012

Claim:
A system for hot solids combustion and gasification comprising: a chemical looping system including: an endothermic reducer reactor comprising: a steam inlet for introducing steam into said reducer reactor; at least one materials inlet introducing into said reducer reactor carbonaceous fuel from a fuel source and calcium containing material from a calcium source that are connected to said reducer reactor; a first CaS/gas outlet for discharging CaS/gas therefrom; a first separator defining an inlet in fluid communication with said first CaS/gas outlet, said first separator defining a product gas outlet for discharging a product gas, and a second CaS/gas outlet; a first CaS inlet for introducing CaS into said reducer reactor, said CaS being discharged from said second CaS/gas outlet; an oxidizer reactor having an air inlet for the introduction of air into said oxidizer reactor, a first CaSO 4 /gas outlet and a second CaS inlet for introducing CaS into said oxidizer reactor, said CaS being discharged from said second CaS/gas outlet; a second separator defining an inlet in fluid communication with said first CaSO 4 /gas outlet, a first outlet for discharging gas therefrom, and a second CaSO 4 /gas outlet; a first CaSO 4 inlet defined by said reducer reactor for introducing CaSO 4 discharged from said second CaSO 4 /gas outlet defined by said second separator therein; a second CaSO 4 inlet defined by said oxidizer reactor for introducing CaSO 4 discharged from said second CaSO 4 /gas outlet defined by said second separator therein; and wherein at least a portion of said chemical looping system is in fluid communication with at least a portion of an existing power generation system.