Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, AFRL-ML-TY-TP-1999-454611. SUPPLEMENTARY NOTES 12a. DISTRIBUTION AVAILABILITY STATEMENTApproved for Public Release; Distribution Unlimited ABSTRACT (Maximum 200 words) 12b. DISTRIBUTION CODEA new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is father envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments-with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, is that for the higher operating voltages (55 and 61 kV) and longer residence times (above 24 sec.) the nitrogen dioxide and total N02, even in dry air, was reduced. Abstract -A new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is further envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, ...
Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, AFRL-ML-TY-TP-1999-454611. SUPPLEMENTARY NOTES 12a. DISTRIBUTION AVAILABILITY STATEMENTApproved for Public Release; Distribution Unlimited ABSTRACT (Maximum 200 words) 12b. DISTRIBUTION CODEA new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is father envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments-with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, is that for the higher operating voltages (55 and 61 kV) and longer residence times (above 24 sec.) the nitrogen dioxide and total N02, even in dry air, was reduced. Abstract -A new design for gas phase pulsed corona reactors incorporating reticulated vitreous carbon electrodes is demonstrated to be effective for the removal of nitrogen oxides from synthetic air mixtures. The reactor consists of a plexiglass tube with porous reticulated carbon disk electrodes placed perpendicularly to the cylinder axis. Streamers propagate between the reticulated carbon disks providing a uniform exposure of the flowing gas stream to the electrical discharge. This mode of operation allows for convenient reactor scale-up and staging while maintaining the inter-electrode spacing in a moderate range, thus precluding the need for higher voltage power supplies. It is further envisioned that the reactor can be operated with multiple sets of electrodes placed in series down the length of the reactor in order to facilitate high efficiency removal of air pollutants.Initial experiments with nitrogen oxide (NO) mixed in dry synthetic air at room temperature and pressure shows that the NO, as expected in an oxidizing environment, is converted to nitrogen dioxide with pulsed corona treatment. Most remarkable, however, ...
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