Patent ID: 8752383

Claim:
A module based oxy-fuel boiler system for producing steam from water, comprising: a first boiler having a feedwater inlet and in a plurality of first boiler tubes for carrying water, the tubes forming a water wall, said feedwater inlet in flow communication with said plurality of tubes, the first boiler configured to substantially prevent the introduction of air; a first boiler oxygen supply for supplying oxygen having a purity of greater than 21 percent to a first boiler oxy-fuel burner system; a first boiler carbon based fuel supply for supplying a carbon based fuel to a first boiler oxy-fuel burner system; a first boiler oxy-fuel burner system, the first boiler oxy-fuel burner system feeding the oxygen and the carbon based fuel into the first boiler in a stoichiometric proportion to limit an excess of either the oxygen or the carbon based fuel to a predetermined tolerance, wherein the first boiler tubes are disposed within said first boiler for direct, radiant energy exposure for energy transfer to the water to produce steam according to a predetermined energy transfer function; a second boiler having a second boiler inlet and a plurality of second boiler tubes, said second boiler input being in flow communication with said the second boiler tubes, so that said second boiler is in series with the first boiler and configured to carry out a different energy said predetermined transfer function, wherein steam from said first boiler is fed into said second boiler inlet the tubes in the second boiler forming at least one tube wall, the second boiler configured to substantially prevent the introduction of air; a second boiler oxygen supply for supplying oxygen having a purity of greater then 21 percent for supplying oxygen to a second oxy-fuel burner system; a second boiler carbon based fuel supply for supplying a carbon based fuel for supplying fuel to a second oxy-fuel burner system; second boiler oxy-fuel burner system, the second boiler oxy-fuel burner feeding the oxygen and the carbon based fuel into the second boiler in a stoichiometric proportion to limit an excess of either the oxygen or the carbon based fuel to a predetermined tolerance, wherein the second boiler tubes are disposed in the second boiler for direct, radiant energy exposure for energy transfer to produce steam, and wherein the first and second boilers are independent of and in series with one another.