Abstract A gas scrubbing method and apparatus according to which the gas which is to be cleaned is directed upwardly toward the throat of a Venturi while a curtain of liquid is dropped downwardly along the upwardly flowing gas at the entrance to the Venturi so that the gas will direct the falling liquid upwardly with the gas through the throat of the Venturi after which the liquid is separated from the gas and returned to the falling curtain of liquid. The Venturi is arranged vertically with the gas flowing upwardly along the interior thereof, and the structure which supplies the liquid is situated at the entrance zone of the Venturi and acts as a baffle for dividing the gas into subsidiary streams which become united at the throat of the Venturi. The Venturi throat is adjusted by a suitable adjusting structure so as to have a cross section adapted to the gas flowing through the Venturi, and the curtain of liquid engaged by the upwardly flowing gas is formed into droplets which are distributed throughout the cross section of the gas.
In a method as recited in claim 1 and including the step of uniting the subsidiary gas streams and the droplets therein at the throat of the Venturi.
Claim 2
Dependent Claim
238 words
In a gas scrubber, elongated generally vertical Venturi means having a lower entrance zone above which said Venturi means has a converging portion followed by a Venturi throat which in turn is followed by a diverging Venturi portion, liquid-supply means situated in said Venturi means at said entrance zone thereof for dropping downwardly along the interior of the Venturi means a curtain of liquid forming a falling liquid wall enclosing at least part of a passage for receiving a gas flowing upwardly through said Venturi means toward said converging portion thereof, said liquid-supply means blocking the flow of gas directly into the throat of the Venturi and forming a baffle around which the gas must flow before reaching the Venturi throat, thus compelling the gas to deflect the liquid curtain upwardly with the gas toward the Venturi throat, and gassupply means connected to an inlet of said Venturi means below said liquid-supply means for directing gas to be cleaned upwardly along the interior of said Venturi means toward said liquid-supply means, separator means forming an extension of and situated downstream of said Venturi means in communication therewith for separating liquid from a gas downstream of said Venturi means, receiving means connected to and communicating with said separator means for receiving the separated liquid therefrom, and return conduit means connected to and communicating with said receiving means and said liquid-supply means for returning the separated liquid to the latter.
Claim 3
Dependent Claim
34 words
The combination of claim 3 and wherein a perforated cone is situated between said Venturi means and separator means for providing a uniform flow of fluid from said Venturi means to said separating means.
Claim 4
Dependent Claim
92 words
The combination of claim 3 and wherein a conduit means is situated downstream of and communicates with said separator means for changing the direction of flow of fluid beyond said separator means, an additional separator means communicating with the latter conduit means for further separating liquid from a gas whose direction of flow has been changed downstream of said first-named separator means, and additional return conduit means communicating with said additional separator means and said liquid-supply means for returning to the latter liquid separated from a gas at said additional separator means.
Claim 5
Dependent Claim
30 words
The combination of claim 3 and wherein an adjusting means is operatively connected with said liquid-supply means for adjusting the elevation of the latter with respect to said Venturi means.