Claims
- 1. A method of operating a power plant comprising an internal combustion engine, a burner and a boiler space comprising:
- routing a portion of the exhaust from the internal combustion engine to the burner;
- adding fuel and air to the exhaust in order to form a mixture;
- combusting said mixture in a primary combustion zone, creating burner exhaust;
- routing a second portion of the engine exhaust from the internal combustion space to mix with said burner exhaust and fuel, creating a second mixture;
- combusting said second mixture in a secondary combustion zone creating secondary burner exhaust; and
- transferring the heat from said secondary burner exhaust to feedwater and steam in order to create steam.
- 2. The method of claim 1, further comprising the step of:
- routing a final portion of the exhaust from the internal combustion engine to mix with said secondary exhaust, prior to said heat transfer step, creating a bulk gas.
- 3. The method of claim 2, further comprising the step of:
- removing pollutants from said bulk gas by injecting liquid ammonia into said bulk gas prior to said heat transfer step.
- 4. The method of claim 2, further comprising the step of:
- removing pollutants from said bulk gas after said heat transfer step.
- 5. The method of claim 1, wherein said transferring step results in superheated steam for use in a turbine.
- 6. A method of removing pollutants from the exhaust of an internal combustion engine by substoichiometric staged reburning comprising the steps of:
- mixing fuel, air and a portion of said engine exhaust to create a first mixture;
- combusting said first mixture, creating first stage exhaust;
- mixing fuel and another portion of said engine exhaust with said first stage exhaust to create a second mixture;
- combusting said second mixture, creating a second stage exhaust;
- mixing an oxygen rich stream with said second stage exhaust to form a third mixture;
- spontaneously combusting said third mixture, creating a bulk mixture;
- lowering the temperature of said bulk mixture; and
- allowing said bulk mixture to escape into the atmosphere.
- 7. The method of claim 6, wherein said oxygen rich stream is a final portion of said engine exhaust which bypasses the first and second combusting steps.
- 8. The method of claim 6, further comprising the step of:
- removing pollutants from said bulk mixture by injecting liquid ammonia into said bulk mixture prior to said temperature lowering step.
- 9. The method of claim 6, further comprising the step of:
- removing pollutants by selective catalytic reduction after said temperature lowering step.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/352,124 filed Dec. 1, 1994, now U.S. Pat. No. 5,525,053.
US Referenced Citations (48)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
352124 |
Dec 1994 |
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