Reduction of NO{sub x} from combustion flue gases by superimposed barrier discharge plasma reactors

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · IEEE Transactions on Industry Applications

DOI:https://doi.org/10.1109/28.605727· OSTI ID:538133

Urashima, Kuniko ^[1]; Chang, J S ^[1]; Ito, Tairo ^[2]

---

1. McMaster Univ., Hamilton, Ontario (Canada). Dept. of Engineering Physics
2. Musashi Inst. of Tech., Tokyo (Japan). Dept. of Electrical and Electronic Engineering

NO{sub x} reduction from combustion flue gases by superimposed barrier discharge plasma reactors is experimentally investigated. The experiments are conducted for applied voltages from 0 to 28 kV, flue gas rates from 0.5 to 2 L/min, ammonia mixture concentrations from 0.7 to 2.65 stoichiometry, and applied voltage phase differences from 0 to 180{degree}, where two 60-Hz ac power supplies are used. The results show the following: (1) NO{sub x} reduction rate decreases with increasing discharge power for surface discharge operations, however, NO{sub x} reduction rate increases with increasing discharge power for silent and superimposing discharge operating modes; (2) NO{sub x} reduction rate increases with increasing discharge power, gas flow rate and ammonia stoichiometry under in-phase operations; (3) NO{sub x} reduction rate for out-of-phase operations is much higher compared with inphase operations, however, NO{sub x} reduction rate has an optimum condition on ammonia stoichiometry, discharge power, and gas flow rate; and (4) energy efficiency of NO{sub x} reduction increases with increasing ammonia mixture and gas flow rate and decreases with increasing discharge power.

• OSTI ID: 538133
• Journal Information: IEEE Transactions on Industry Applications, Journal Name: IEEE Transactions on Industry Applications Journal Issue: 4 Vol. 33; ISSN 0093-9994; ISSN ITIACR
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AMMONIA
ELECTRIC DISCHARGES
NITROGEN OXIDES
PLASMA PRODUCTION
POLLUTION CONTROL EQUIPMENT