Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1983-10-18
1985-06-11
Lacey, David L.
Gas separation
Means within gas stream for conducting concentrate to collector
55105, 55139, 323903, 361235, B03C 368
Patent
active
045226350
ABSTRACT:
A method and device for varying a d.c. voltage connected to an electrostatic dust separator so as to render more effective, in return for a low consumption of energy, the collection of dust on an electrode or electrodes incorporated in the dust separator. The d.c. voltage is set to a first level (basic level), said level having superimposed on it a number, in each case two or more, of voltage pulses forming a pulse group, with the consecutive pulse groups being separated from each other in a time sequence and supplied to electrodes incorporated in the dust separator. A pulse generating device is so arranged as to generate a number of pulses making up a pulse group, whereby the first pulse (21) in said pulse group is selected so as to exhibit an amplitude and/or a duration and/or a form such that, when the pulse is supplied to the dust separator, it will not cause flash-over but will produce an increase in the tendency to flash-over (20') of the dust separator, in conjunction with which the immediately following pulse (22) in the pulse group is selected so as to exhibit an amplitude and/or a duration and/or a form such that, when the pulse is supplied to the dust separator, it will not cause flash-over in spite of the increased tendency to flash-over (20') caused by the preceding pulse, and so on.
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Senichi Masuda et al., A Pulse Voltage Source for Electrostatic Precipitators, Conference: Industry Applications Society, IEE-IAS 1978, Annual Meeting, Toronto, Ontario, Canada, (Oct. 1-5, 1978), pp. 23-30.
Flakt Aktiebolag
Lacey David L.
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