Patent ID: 11945730
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  F | IPC B  C  F

Claim 10:
11. A method comprising:
oxidizing combustible fuel in an oxidation reactor to produce heat and hot steam as a result of oxidation of the fuel;
loading a hollow first cavity of a first chamber that is operationally connected to the oxidation reactor with water and the fuel;
drawing a vacuum on the hollow first cavity to lower a boiling point of water in the hollow first cavity to a lowered boiling point at least 20° F. below 212°F.;
providing the hot steam from the oxidation reactor to a hollow second cavity of a second chamber that at least partially surrounds the hollow first cavity, such that hot steam received from the oxidation reactor into the hollow second cavity causes water in the hollow first cavity to boil to cold steam at the lowered boiling point;
moving a movable piston located within the hollow first cavity and that is in sealable contact with an inner wall of the first chamber along a length of the first chamber to mechanically move residual fuel in the hollow first cavity to the oxidation reactor, wherein the residual fuel remains in the hollow first cavity after water in the hollow first cavity boils to cold steam before the residual fuel is moved to the oxidation reactor, wherein residual fuel that is moved into the oxidation reactor provides the combustible fuel for oxidation in the oxidation reactor; and
pumping liquid in and out of the hollow first cavity to cause movement of the movable piston between a first position in which the fuel and water is loaded into the hollow first cavity and a second position in which the residual fuel is moved from the hollow first cavity to the oxidation reactor.