PRIDNEPROVIE'S SCIENTIFIC - EDUCATIONAL AND INFORMATIVE

CENTER FOR CLEANER PRODUCTION (PSEIC)

E-mail: zadorsky@hotmail.com

1.SUMMARY

It is shown, that the modulating of voltage for power supply of electric filter by pulse permits to increase capacity of a crown in the some times, that results in reduction of a dust waste and smog in 1.5-3.0 times in depending on features of technological process and conditions of the electric filter. The basic difference of the technical decision from the similar decisions, offered in advanced countries, is high speed of increase of the forward front of an voltage impulse, that provides additional effects. Equipment for clearing of departing gases of a dust, oxides of a sulfur, oxides of a nitrogen and oxides of a carbon was designed on the base of electric filters with pulsing power supply voltage. In 50 % of technologies of clearing of industrial gas pollution electric filters with constant voltage are used. As a rule, after them do not put additional devices for sorption of sulfur oxides, oxides of nitrogen, carbon in particular at large volumes of gas pollution. It is known use of electric filters with the duration of pulses, lying in a nanosecond range gives efficiency of sulfur oxides sorption 65-70%, reduction of a dust pollution in atmosphere in 1.5-3.0 times. It permits to use electric filter in quality of the reactor, capable to devour a dust simultaneously with gas components also.

Main parameters:

• Target current in a pulse, A 100-350
• Source voltage, kV 30-70
• Target voltage, kV 45-85
• Duration of a pulse, mks 1-30
• Frequency of a target current, 1/s 25-400
• Speed of increase forward front of impulse of a voltage, kV/mks 200-1200
• Weight, kg of 85-100
• Dimensions, mm x mm x mm 1000 x 700 x 800.

3. The level of realization of the object in the industry is testing and partial inculcating in production.

4. The main technical and economical results of realizations. Use of pulsing voltage converters permits to increase efficiency of clearing of gases from a dust, to improve conditions of shaking of filters at the expense of reduction of adhesive forces in a pulsing crown, to reduce of the energy consumption in 2-3 times at the expense of reduction of average current, and at availability in departing gases of a oxygen and absorber after dry electric filter the converter permits to increase the sorption efficiency of oxides. At the price of a pulsing converter $2000 it pays back self in current of 5 months only at the expense of direct economies of the electric power. The voltage converters can be used also for increase of sorption efficiency of oxides in wet electric filters and electric absorbers. A profit on one converter on estimated accounts makes about $1000. The requirement for such modernization only in Ukraine of the order of 500 objects. A necessary seed capital - $300.000.

5. Desired forms of the exit in the west market of high technologies. We search for the business partners for joint activity on mutual beneficial conditions.

Information supplied by the Author April 1999.  Page last updated: January 19, 2004