B - Operations – Transporting – 03 – C
Patent
B - Operations, Transporting
03
C
B03C 3/68 (2006.01)
Patent
CA 2123225
The present invention relates to a method for controlling, in an electrostatic precipitator unit comprising discharge elec- trodes and collecting electrodes between which a varying high voltage is maintained, a pulsating direct current supplied to these electrodes. In the method according to the invention the frequency, pulse charge and/or pulse duration of the pulsating direct current are caused to vary such that a plurality of combinations of frequency, charge and duration are obtained. For each of these combinations; the voltage U between discharge electrodes and collecting electrodes is measured, and for each of these combina- tions; a voltage level U ref is determined, measured or calculated, In a defined time interval, for each of these combinations, either the integral I k = U.(U-U ref),dt is measured and/or calculated during the time interval, or A i = U.(U-U ref) is mea- sured at a number of points of time, whereupon I k or linear combinations of A i are used to select the combination of fre- quency, charge and duration of the pulsating direct current,
Abb Flakt Ab
Gowling Lafleur Henderson Llp
LandOfFree
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