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Selective NOx Recirculation for Stationary Lean-Burn Natural Gas Engines. Reporting Period for October 1, 2002 to December. 31, 2006.

DE2007913089

Publication Date	2007
Personal Author	Clark, N. N.
Page Count	151
Abstract	Nitric oxide (NO) and nitrogen dioxide (NO2) generated by internal combustion (IC) engines are implicated in adverse environmental and health effects. Even though leanburn natural gas engines have traditionally emitted lower oxides of nitrogen (NOx) emissions compared to their diesel counterparts, natural gas engines are being further challenged to reduce NOx emissions to 0.1 g/bhp-hr. The Selective NOx Recirculation (SNR) approach for NOx reduction involves cooling the engine exhaust gas and then adsorbing the NOx from the exhaust stream, followed by the periodic desorption of NOx. By sending the desorbed NOx back into the intake and through the engine, a percentage of the NOx can be decomposed during the combustion process. SNR technology has the support of the Department of Energy (DOE), under the Advanced Reciprocating Engine Systems (ARES) program to reduce NOx emissions to under 0.1 g/bhp-hr from stationary natural gas engines by 2010. The NO decomposition phenomenon was studied using two Cummins L10G natural gas fueled spark-ignited (SI) engines in three experimental campaigns. It was observed that the air/fuel ratio (e), injected NO quantity, added exhaust gas recirculation (EGR) percentage, and engine operating points affected NOx decomposition rates within the engine.
Keywords	Nitric oxide Nitrogen dioxide Lean burn Natural gas emissions Air pollution control Internal combustion engines Progress reports Tables(Data) Schematic diagrams Graphs(Charts) Equations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown. Dept. of Mechanical and Aerospace Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200802
Contract Number	DE-FC26-02NT41608

Selective NOx Recirculation for Stationary Lean-Burn Natural Gas Engines. Reporting Period for October 1, 2002 to December. 31, 2006.

Selective NOx Recirculation for Stationary Lean-Burn Natural Gas Engines. Reporting Period for October 1, 2002 to December. 31, 2006.
DE2007913089

Publication Date	2007
Personal Author	Clark, N. N.
Page Count	151
Abstract	Nitric oxide (NO) and nitrogen dioxide (NO2) generated by internal combustion (IC) engines are implicated in adverse environmental and health effects. Even though leanburn natural gas engines have traditionally emitted lower oxides of nitrogen (NOx) emissions compared to their diesel counterparts, natural gas engines are being further challenged to reduce NOx emissions to 0.1 g/bhp-hr. The Selective NOx Recirculation (SNR) approach for NOx reduction involves cooling the engine exhaust gas and then adsorbing the NOx from the exhaust stream, followed by the periodic desorption of NOx. By sending the desorbed NOx back into the intake and through the engine, a percentage of the NOx can be decomposed during the combustion process. SNR technology has the support of the Department of Energy (DOE), under the Advanced Reciprocating Engine Systems (ARES) program to reduce NOx emissions to under 0.1 g/bhp-hr from stationary natural gas engines by 2010. The NO decomposition phenomenon was studied using two Cummins L10G natural gas fueled spark-ignited (SI) engines in three experimental campaigns. It was observed that the air/fuel ratio (e), injected NO quantity, added exhaust gas recirculation (EGR) percentage, and engine operating points affected NOx decomposition rates within the engine.
Keywords	Nitric oxide Nitrogen dioxide Lean burn Natural gas emissions Air pollution control Internal combustion engines Progress reports Tables(Data) Schematic diagrams Graphs(Charts) Equations
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown. Dept. of Mechanical and Aerospace Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200802
Contract Number	DE-FC26-02NT41608