Gas separation: processes – Electric or electrostatic field – And nonelectrical separation of fluid mixture
Patent
1999-02-10
2000-12-05
Chiesa, Richard L.
Gas separation: processes
Electric or electrostatic field
And nonelectrical separation of fluid mixture
95 70, 95 71, 95 78, 96 27, 96 53, 96 55, 2396901, B03C 3014
Patent
active
061560987
ABSTRACT:
Gas scrubbing apparatus and method, employing highly charged liquid droplets for removal of both particulates and pollutant gases from the gas to be cleaned, allowing scrubbing of uncharged particulates by means of monopole--dipole attractive forces between the charged liquid droplets and the electric dipoles induced in the uncharged particulates by the charged droplets; employing electrode geometry at the site of droplet production and charging, having spreading liquid sheet electrodes emitting the droplets from the edges of the liquid sheets, interspersed with electrically conductive induction electrodes, with electrostatic potential of no more than about 20 kv existing between the induction electrode array and the array of liquid sheets, and with spacing such that adequately high electric field strength can be maintained at the edges of the liquid sheets to allow adequate charging of the droplets emitted from the liquid sheets, without the occurrence of corona discharges which could deplete droplet charges or interfere with production of the electric field strength required for adequate droplet charging; allowing the particulate and pollutant gas scrubbing procedures to be carried out simultaneously in a single chamber; requiring no substantial power other than that for the blower or other means which moves the gas to be cleaned through the cleaning chamber; and allowing these results to be achieved with low liquid-to-gas flow ratios.
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Chiesa Richard L.
Harris Robert W.
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