Investigation of AC energized ferroelectric pellet reactor for gas cleanup

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:226932

Amirov, R H; Asinovsky, E I; Samoilov, I S ^[1]

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1. Inst. for High Temperatures, Moscow (Russian Federation)

The ferroelectric bed reactor employs a high-voltage AC power supply in conjunction with a tubular reactor packed with high-dielectric ceramic pellets. The pellets are held within the tube arrangement by two metal mesh electrodes. When external voltage is applied across the high dielectric layer, the pellets are polarized, and an intense electric field is formed around each pellet contact point. Many pulsed discharges take place around each contact point of the ferroelectric pellets, and the discharge energy can be controlled by changing the dielectric constant of the pellet, and by the voltage waveform. The ferroelectric pellet reactor can destroy a variety of organic compound, including toluene, methylene chloride and CFC-113. In this paper the sterilization performance of ferroelectric pellet reactor is reported. The pellet bed was fixed inside a 40-mm inner diameter glass tube. The cross-sectional area of the pellet bed vertical to the gas stream was 10 cm{sup 2}. The thickness of the bed was 20 mm. The pellets with a diameter of 2.5 mm were BaTiO{sub 3}-based ceramics. Mesh electrodes (1-mm) were attached on both sides of the pellet bed. The AC voltage was a sinusoidal wave with a 5.7 KHz frequency. The maximum peak voltage was 9,6 kV. Ozone, NO{sub x} and Ba concentrations of the exhaust air were measured. The flow rate of the sample air was 5 - 20 l/min.

• OSTI ID: 226932
• Report Number(s): CONF-950749--
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
42 ENGINEERING
54 ENVIRONMENTAL SCIENCES
CERAMICS
CHLOROFLUOROCARBONS
DISSOCIATION
ELECTRIC DISCHARGES
ELECTRIC FIELDS
FERROELECTRIC MATERIALS
METHYLENE CHLORIDE
OZONE LAYER
PELLETS
TOLUENE