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Pulsed Voltage Converter for Electric Filter Power Supply
By William Zadorsky ()
ABSTRACT: Nanosecond voltage pulses with a high-slope of forward front are generated in the power supply system of an electrostatic filter. The crown energy is thus increased several times, and the degree of dust control 1.5- to 3-fold. Furthermore, the filter is thereby converted to a reactor capable of removing 65 to 70% of SOx, NOx and COx from the flue gas.
Converter specifications
| Source voltage | 30-70 V |
| Target voltage | 45-85 V |
| Pulse current | 100-350 A |
| Pulse time | 1-30 ns |
| Pulsed current frequency | 25-400 |
| Voltage pulse forward front slope | 200-1200 V/s |
| Weight | 85-100 kg |
| Dimensions | 1000 by 700 by 800 mm |
DEGREE OF COMMERCIALIZATION. The unit passed tests and was reduced to practice on a limited scale.
TECHNICAL DATA AND COST PERFORMANCE. Improved dust control, easier dust detaching due to reduced adhesive forces in a pulsing crown are among the merits. Due to reduced average current, the energy consumption is cut 2- to 3-fold. Assuming its price at $2,000, a converter will pay off in 5 months, if only direct saving of energy is taken into account.
When oxygen is present in the flue gases, the efficiency of oxide removal in wet electric filters and electric absorbers is improved. The estimated profit per one converter may be about $1,000 per year.
The Ukraine's demand for such appliances is estimated at 500. The necessary seed capital is $300,000.
MARKET PENETRATION. Any type of collaboration will be considered.
KEY WORDS. Air pollution, dry electric filters, wet electric filters, dust control, SOx, NOx, COx, energy conservation, pulsed voltage, converters.
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