Removal of NOx from diesel generator exhaust by pulsed electron beams

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The objective of this paper is to determine the effects of electron beam pulse parameters on the utilization of the reactive free radicals for removal of NO{sub x} from diesel generator exhaust. A dose per pulse less than 1 kGy has been determined to be optimum for effective radical utilization. During each post-pulse period, the radicals are utilized in the removal of NO{sub x} in a timescale of around 100 microseconds; thus, with pulse frequencies of around 10 kHz or less, the radical concentrations remain sufficiently low to prevent any significant competition between radical-pollutant and radical-radical reactions. It is shown ... continued below

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9 pages; Other: FDE: PDF

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Penetrante, B. M. July 3, 1997.

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Description

The objective of this paper is to determine the effects of electron beam pulse parameters on the utilization of the reactive free radicals for removal of NO{sub x} from diesel generator exhaust. A dose per pulse less than 1 kGy has been determined to be optimum for effective radical utilization. During each post-pulse period, the radicals are utilized in the removal of NO{sub x} in a timescale of around 100 microseconds; thus, with pulse frequencies of around 10 kHz or less, the radical concentrations remain sufficiently low to prevent any significant competition between radical-pollutant and radical-radical reactions. It is shown that a pulsed electron beam reactor, operating with a dose per pulse of less than 1 kGy/pulse and pulse repetition rate of less than 10 kHz, will have the same plasma chemistry efficiency (parts per million of removed NO{sub x} per kGy of electron beam dose) as an electron beam reactor operating with a low dose rate of 50 kGy/s in continuous mode. Ozone accumulation is a limiting factor under high pulse frequency conditions. The total dose requirement determines the optimum combination of dose per pulse and pulse frequency for both radical utilization and prevention of ozone buildup.

Physical Description

9 pages; Other: FDE: PDF

Notes

OSTI as DE00016412

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  • 11th IEEE International Pulsed Power Conference, Baltimore, MD (US), 06/29/1997--07/02/1997; Other Information: Supercedes report DE98051031; PBD: 03 Jul 97

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  • Other: DE98051031
  • Report No.: UCRL-JC-128068
  • Report No.: CONF-9706113*--
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 16412
  • Archival Resource Key: ark:/67531/metadc624552

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • July 3, 1997

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  • June 16, 2015, 7:43 a.m.

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  • Jan. 4, 2017, 1:34 p.m.

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Penetrante, B. M. Removal of NOx from diesel generator exhaust by pulsed electron beams, article, July 3, 1997; (digital.library.unt.edu/ark:/67531/metadc624552/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.