Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1991-01-16
1992-06-30
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60275, 55122, 55146, 55151, 55152, 55DIG30, F01N 302
Patent
active
051252309
ABSTRACT:
A method and apparatus for removing soot from an exhaust gas stream wherein the exhaust gas stream is contacted with water to provide a substantially water saturated exhaust gas stream, particles and droplets in the water saturated gas stream then are electrically charged to produce a gas stream containing electrically charged particles and droplets, and an electric field is established for electrostatically attracting and de-entraining soot and soot containing water droplets from the gas stream containing electrically charged particles and droplets to provide a substantially soot free exhaust gas stream. The present invention includes a precipitator wherein the insulators are positioned in low dew point relatively clean locations and, in one embodiment, includes the use of the exhaust gas stream to maintain the temperature level of the insulators above dew point. In one other embodiment, the condensate produced as a result of electrostatically attracting and de-entraining soot and soot containing water droplets from the exhaust gas stream containing electrically charged particles and droplets is recirculated and used as part of the water for contacting the exhaust gas stream.
REFERENCES:
patent: 3485015 (1969-12-01), Vecchio
patent: 3683626 (1972-08-01), Merrill
patent: 4908047 (1990-03-01), Leonard
Hanegan Herbert M.
Hart Douglas
Kerr-McGee Coal Corporation
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