Patent ID: 9638418
Date: 2017-05-02
CPC Classifications: F23C,F23L,Y02E

Claim:
1. A method for operating a steam generator comprising: providing a transport reactor; introducing only a substantially pure oxygen feed stream into said transport reactor in an amount sufficient to maintain the transport reactor at or above a specific system load, whereby the specific system load is the system load when only the substantially pure oxygen feed stream is provided to the transport reactor at a minimum flow velocity for operating said transport reactor; introducing a fuel into the transport reactor, wherein the fuel and the substantially pure oxygen are mixed prior to being introduced into the transport reactor and the resulting mixture is introduced into the transport reactor via the same inlet; combusting the fuel in the presence of said substantially pure oxygen feed stream to produce a flue gas, said flue gas containing solid material; separating said solid material from the flue gas; passing the solid material to a heat exchanger; mixing the solid material with the substantially pure oxygen feed stream and fuel prior to directing the mixture of the solid material, the substantially pure oxygen feed stream, and the fuel to said transport reactor to contribute to the combustion process occurring within the transport reactor; and directing the mixture of the fuel, substantially pure oxygen feed stream, and solid material into said transport reactor to contribute to the combustion process.