Reduced temperature regernerating/calcining apparatus for hydrogen generation
View Patent ↗A method and apparatus are disclosed for regenerating calcium oxide used in the production of hydrogen gas. The method includes steps of: (a) streaming a solid reactant into an inlet port of a contactor vessel; (b) streaming a purge oxidant into an oxidant port of the contactor vessel to reduce a partial pressure of a gas over the solid reactant; (c) venting the gas from a gas port of the contactor vessel; and (d) removing the solid reactant from a discharge port of the contactor vessel.
1. A calcining apparatus comprising:
a contactor vessel;
a solid reactant inlet port coupled to the contactor vessel for streaming a solid reactant into the contactor vessel;
an oxidant inlet port coupled to the contactor vessel for streaming a purge oxidant into the contactor vessel to reduce a partial pressure of a gas released from the solid reactant;
a fuel inlet port coupled to the contactor vessel for introducing fuel to heat the solid reactant;
a gas vent port coupled to the contactor vessel for venting the gas from the contactor vessel; and
a solid reactant discharge port coupled to the contactor vessel for removing the solid reactant from the contactor vessel.
2. The calcining apparatus of claim 1 further comprising a feed stream of hydrogen gas coupled with the fuel inlet port.
3. The calcining apparatus of claim 1 further comprising a feed stream of calcium carbonate coupled with the solid reactant inlet port.
4. The calcining apparatus of claim 1 further comprising a feed stream of steam coupled with the oxidant inlet port.
5. The calcining apparatus of claim 1 further comprising a hydrogen gas outlet port for removing hydrogen gas from the contactor vessel.
6. The calcining apparatus of claim 1 wherein fuel inlet port is located between the oxidant inlet port and the gas vent port.
7. The calcining apparatus of claim 1 wherein the oxidant inlet port is located between the fuel inlet port and solid reactant discharge port.
8. The calcining apparatus of claim 1 further comprising a rotary valve adjacent to and fluidly connected with the solid reactant discharge port.
9. A calcining apparatus comprising:
a regeneration vessel including a solid reactant feed for delivering spent solid reactant to the regeneration vessel, an oxidant gas feed for delivering oxidant gas to the vessel to reduce the partial pressure of a gas released from the solid reactant feed, a fuel gas inlet for delivering fuel gas to the vessel, a gas vent outlet for venting a product gas from regeneration of the spent solid reactant, and a solid reactant discharge outlet for removing regenerated solid reactant from the regeneration vessel.