High Voltage Engineering Corporation

Ion Physics Corporation

Helmut I Milde

Sanborn F Philp

Apparatus for the disinfection of liquids

Compound method for disinfection of liquids

A charging apparatus constructed to provide a continuous ac voltage and periodic pulses between the corona electrodes and non-corona electrodes contained therein.

Electrostatic charging apparatus

An improved procedure is disclosed for the electrostatic precipitation of particulates entrained in a stream of gas between corona electrodes and collecting electrodes. The underlying dc field which serves to charge the particulates and transport them out of the stream is relatively uniform and therefore can be relatively high, while the corona which is required to yield ions to charge the entrained particulates is provided by a high repetitively pulsed electric field between the corona electrodes and the collecting electrodes. Embodiments are presented which suggest the manner in which conventional precipitators may be adapted to the present invention.

Electrostatic precipitation

An improved procedure is disclosed for supplying the power to an electrostatic precipitation system of the type wherein an underlying dc field serves to charge the particulates and transport them out of the stream of gas, while the corona which is required to yield ions to charge the entrained particulates is provided by a high, repetitively pulsed, electric field between the corona electrodes and collecting electrodes. The present disclosure reduces overall power input by connecting the corona electrodes in series and applying very narrow, frequent and high-amplitude pulses to one end of the series-connected cathode wire structure so that the pulses are propagated along the structure, thereby pulse-charging only a small portion of the precipitator at any given instant of time.

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Boxford, MA, United States of America

Helmut I Milde