TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Component: The flow nozzle comprises a ceramic material.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Component: The injector body comprises a first flange (64) operably forming the inlet end; a second flange (68) operably forming the discharge end; and a tubular body portion disposed between the first and second flanges. The injection device further comprises a wall of the tubular body portion; a cooling channel disposed within the wall of the tubular body portion; and insulation layer(s) (74) disposed within the tubular body portion and adjacent the wall. The transfer tube comprises an internal flow passage; a connector adapted for mechanical connection to the tubular body end; and a discharge end adapted for connection to the second flange. The internal flow passage of the transfer tube is configurable to discharge the calcium carbonate particles operably transferred through the internal flow passage from the discharge end and external to the injector body. The reforming system further comprises a hydrogen reactor operably reacting the steam volume and the methane volume and operable to produce the carbon dioxide volume; the transfer tube(s) operable to transfer the calcium carbonate particles to the calciner; a flow splitter (30) connectable to the calciner injector, and including at least two of the transfer tubes; an average calcium carbonate particle velocity within the transfer tube of approximately 6.1 m/second; a maximum bulk density of the calcium carbonate particles within the transfer tube of approximately 480.5 kg/m3; a minimum bulk density of the calcium carbonate particles within the transfer tube of approximately 0.8 kg/m3; and an average bulk density of the calcium carbonate particles within the transfer tube of approximately 0.8- approximately 40.05 kg/m3; an average velocity of the hot vitiated air within the calciner injector of approximately 61 m/second; and a maximum residence time of any one of the calcium carbonate particles within the calciner of approximately 0.3 seconds. The calciner injector comprises the injector body operable to receive the transfer tube and to orient a discharge from the transfer tube. The flow splitter is operable to receive the calcium carbonate particles and split the calcium carbonate particles into approximately equal flow volumes in each of the transfer tubes. The hot vitiated air comprises air at approximately 1412- approximately 1523degreesC, operably heated by combustion of a methane fuel added to the air. Preferred Properties: The transfer tube has a tube outer diameter of approximately 0.64- approximately 0.95 cm, and a minimum internal diameter of approximately 0.46 cm. Preferred Method: The method further comprises dividing the volume of heated vitiated air into flow volumes; directing each of the flow volumes into one of nozzles connectable to the calciner injector; angularly orienting the flow nozzles with respect to an axis of discharge of the calcium carbonate particles; impinging the volume of hot vitiated air directly into the calcium carbonate particles discharged from the calciner injector; providing the feed tube as feed tubes; splitting the calcium oxide particles into particle streams; directing each of the particle streams into one of the feed tubes; creating the calciner injector from at least an opposed pair of flanges having a tubular shaped body disposed between the pair of flanges; and insulating at least an inner wall (75) of the tubular shaped body (66).    TECHNOLOGY FOCUS - METALLURGY - Preferred Component: The injector body comprises at least a nickel-chromium containing alloy material, and a steel material. The transfer tube comprises at least a nickel-chromium containing alloy material, and a steel material.