Patent ID: 9410409
Filing Date: 2016-08-09
CPC Classification: E21B,F01K,F02C,F22B,Y02E

Claim Text:
1. An apparatus for generating a high-pressure stream of superheated vapor, nitrogen, and carbon dioxide, comprising: an inlet section configured to receive fuel and air containing a stoichiometric or near stoichiometric amount of oxygen for the fuel; a combustor section adjacent to and coaxial with the inlet section and configured to confine therein substantially stoichiometric combustion of the fuel and air to produce combustion gases, the combustor section including: i) a tubular combustor body having an inner wall and an outer wall; ii) a plurality of internal cooling channels extending along the length of the tubular combustor body between the inner wall and the outer wall of the combustor body; iii) an upstream coolant manifold in fluid communication with the internal cooling channels and configured to receive and distribute coolant into the internal cooling channels; and iv) a water line mounted within the tubular combustor body and configured to introduce water onto the combustion gases to produce superheated steam; an outlet section adjacent to and coaxial with the combustor section, the outlet section having an outlet for allowing the superheated steam and combustion gases to exit the combustion chamber; and one or more after cooler plates mounted coaxially within the combustor body, each after cooler plate having a plurality of tabs along an outer edge thereof configured to create gaps between the after cooler plate and the inner wall of the combustor body through which the combustion gases flow.