Gas-liquid contact system
AssigneeThe Babcock & Wilcox Company
InventorsWilliam Downs, Edward A. Pirsh, Jack F. Stewart, Stephen S. Strom
Life of this patent
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Abstract
A gas-liquid contact system for absorption of gaseous contaminants in an absorptive liquid where contact is attained by controlled flow relation between the gas and liquid forming a fluidized liquid mass for intimate contact between gas and liquid.
Claims6
A gas-liquid contact device comprising walls defining an upright housing with a gas inlet and having means for passing gas upwardly therethrough one or more horizontally disposed perforated plates extending across the housing, the one or more perforated plates being vertically spaced in the housing in location upward from the gas inlet, each of the one or more perforated plates being perforated with substantially symmetrically spaced relatively large openings to form an open area through each of the one or more plates equivalent to approximately 25-50% of the cross sectional area of the housing, a plurality of upright partitions mounted on each of the one or more perforated plates, at least one of the partitions on each of the one or more perforated plates being mounted substantially perpendicular to the other partitions on the one or more perforated plates to form a plurality of open-topped compartments, the height of the partitions being substantially equal and terminating intermediate the spacing above each of the one or more perforated plates, nozzle means positioned interior to the housing above the uppermost of the one or more perforated plates and symmetrically arranged with respect to the one or more perforated plates so as to deposit substantially equal quantities of liquid slurry or liquid solution in the compartments of the uppermost of the one or more perforated plates and at least one or more gas outlet means positioned above the nozzle means for discharge of said gas from the housing.
In a counter-current liquid gas contact device having one or more vertically spaced perforated plates extending horizontally across the flow path of an upwardly rising stream of SO.sub.2 containing gas, each of the one or more perforated plates having approximately 25-50% open area and being divided into a plurality of open topped compartments, the method of operation which comprises passing the gas upwardly to the plates at a rate of 5 to 20 feet per second, introducing a spray of chemically reactive liquid slurry or liquid solution with about 5-10% suspension containing calcium compounds to the uppermost of said one or more plates for downward movement therethrough in counter-current contact with the gas, the chemically reactive liquid slurry or solution being introduced at a rate of approximately 20 gallons per square foot of plate area per minute.
Dependencies are inferred from the claim text.