초록 ▼

Improvements in air pollution control and polluted gas effluent treatment, both processes and apparatus; Processes and devices for sequentially several times drawing a polluted gas stream against a liquid surface under a barrier approaching the liquid surface, while adding ambient air to the stream

Improvements in air pollution control and polluted gas effluent treatment, both processes and apparatus; Processes and devices for sequentially several times drawing a polluted gas stream against a liquid surface under a barrier approaching the liquid surface, while adding ambient air to the stream between impacts; Processes and devices for humidifying a polluted gas stream by first drawing the stream in impact against a liquid body surface, thereafter nucleating the humidified gas stream by adding ambient air thereto, and finally again drawing the now nucleated gas stream into impact against a liquid body surface to remove the polluting particulates therefrom; Single vessel and multiple vessel multi-stage processes of treating polluted gas streams by drawing same into first impacting humidification, thereafter ambient air addition-nucleation followed by further draw-through impaction.

대표청구항 ▼

A process of treating hot, polluted gas having particulate matter therein, which hot, polluted gas is at a temperature substantially above ambient air temperature, comprising the steps of: sequentially twice drawing a continuous stream of the polluted gas downwardly to impact against the surface of

A process of treating hot, polluted gas having particulate matter therein, which hot, polluted gas is at a temperature substantially above ambient air temperature, comprising the steps of: sequentially twice drawing a continuous stream of the polluted gas downwardly to impact against the surface of a body of water, thereby to substantially saturate and humidify the hot gas stream, each time while passing the gas stream under a separate barrier subsequent to each impact, each barrier closely approaching the water body surface, with the said humidified, polluted gas stream being drawn upwardly between said impacts into an ambient air addition zone, each impaction serving both to humidify the hot polluted gas stream and remove some of the larger particles carried thereby therefrom, continuously mixing ambient air having a lower temperature than that of the humidified, particulate carrying, polluted gas stream with the said gas stream in said ambient air addition zone between the impacts thereof on the surface, sufficient ambient air being added to said gas stream in said zone to take the total gas volume in the ambient air addition zone below the dew point at the overall temperature and pressure conditions existing in said zone, thereby transforming the said humidified, polluted gas stream from a state of substantial saturation to supersaturation with nucleation and agglomeration of the particulate matter therewithin into larger particles, all of the said operations on said hot polluted gas stream taking place within continuously connected, confined spaces, whereby the drawing of said stream therethrough creates a rarefaction which somewhat lowers the boiling point of the water. A gas scrubber for scrubbing hot, polluted gas containing particulate matter, which hot, polluted gas is at a temperature substantially above ambient air temperature, comprising, in combination: a pair of enclosed chambers each having a body of water in the lower portion thereof, a substantially vertical wall in each chamber dividing at least the upper portion of the space over the water body therein into two zones, each said wall closely approaching the surface of the water body in each chamber with its lowermost extremity, the upper portion of one zone of each chamber having a gas inlet and the upper portion of the other zone of each chamber having a gas outlet, a gas flow duct connecting the gas outlet of a first one of said chambers and the gas inlet to the second of said chambers, an ambient air inlet opening into said gas flow duct and in communication with a source of ambient air, and means for continuously drawing said hot, polluted gas through said chambers from the gas inlet to the first chamber to the gas outlet of the second chamber, thereby to substantially saturate and humidify the hot gas stream in each chamber, and further drawing sufficient ambient air through said inlet opening into said flow duct that the total gas volume in said flow duct is taken below the dew point at the overall temperature and pressure conditions existing therein, thereby transforming the said humidified, polluted gas from a state of substantial saturation to supersaturation with nucleation and agglomeration of the particulate matter therewithin into larger particles, said means for continuously drawing said gas also operative to create a condition of rarefaction in said chambers which somewhat lowers the boiling point of the water therein.