steam 48 and the cooling steam 46 thereby preventing overheating of the combustor 4 components and producing a third flow of process steam 52 referring now to fig7 in the preferred embodiment of the invention intermediate pressure combustor 4 receives hydrogen 7 through an orifice 402 of an axially located tube 404 the combustor 4 also receives cooling steam 46 and process steam 48 not shown which is combined into steam 414 steam 414 flows through a space 409 between shell 408 and liner 410 of the combustor cooling the combustor a portion of the steam 414 flows through the liner 410 cooling the liner the remainder of the steam 414 and the hydrogen 7 flows into a premixing chamber 406 to form a low value fuel 422 the fuel 422 passes out of the chamber 406 and through an axially located tube 415a which is surrounded by a tube 415b the radially located tube 420 delivers oxygen 9 to the tube 415b the oxygen is delivered into radially located tube 420 by an orifice 418 the streams of oxygen 9 and fuel 422 flow through swirlers 424a and 424b creating an intensely back mixed zone 412 that produces combustion products 416 referring now to fig1 the third flow of process steam 52 has a temperature range of approximately 1500 u00b0 c to approximately 1700 u00b0 c and a pressure range of approximately 20 bar to approximately 40 bar the lower temperature limit of approximately 1500 u00b0 c is to achieve good thermal efficiency the upper temperature limit of approximately 1700 u00b0 c is the limit of a steam cooled turbine preferably the temperature of the third flow of process steam 52 is approximately 1700 u00b0 c the pressure.