N[sub 2]O formation in combustion systems
The objective of this project is to characterize N[sub 2]O emissions from combustion sources emphasizing N[sub 2]O emissions from post-combustion selective gas phase NO[sub x] reduction processes and reburning. The processes to be evaluated include ammonia, urea and cyanuric acid injection and rebur...
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| Language: | unknown |
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2008
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| Online Access: | http://www.osti.gov/servlets/purl/7024217 https://www.osti.gov/biblio/7024217 https://doi.org/10.2172/7024217 |
| Summary: | The objective of this project is to characterize N[sub 2]O emissions from combustion sources emphasizing N[sub 2]O emissions from post-combustion selective gas phase NO[sub x] reduction processes and reburning. The processes to be evaluated include ammonia, urea and cyanuric acid injection and reburning. The project includes pilot-scale testing at two facilities supported by chemical kinetic modeling. Testing will be performed on both a gas-fired plug flow combustor and a pulverized-coal fired combustor. Work performed to date has included the performance of the initial detailed chemical kinetics calculations. These calculations showed that both urea and cyanuric acid produce significant quantities of N[sub 2]O, while NH[sub 3] injection produced negligible amounts. These kinetics data support limited test results reported for cyanuric acid and ammonia injection. Laboratory work to evaluate the selective gas phase NO[sub x] reduction processes listed above will begin in the gas-fired facility early in CY 1990. Testing to evaluate reburning at the coal-fired facility is currently planned to be performed in parallel with the testing at the gas-fired facility. Following completion of that work, additional kinetics calculations will be performed. |
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