Gas separation: processes – With control responsive to sensed condition – Concentration sensed
Patent
1993-06-08
1994-10-18
Drodge, Joseph W.
Gas separation: processes
With control responsive to sensed condition
Concentration sensed
73 3102, 7386434, 95235, 210916, 422 3, 422 5, 436121, B01D 5314
Patent
active
053564588
ABSTRACT:
A system for continuously monitoring the hydrogen sulfide concentration present in the atmosphere above a waste water stream, such as a sewerage stream, and for controlling the amount and time of injecting a specified chemical into the waste water stream in order to control the quantity of hydrogen sulfide which would evaporate into the atmosphere. This system comprises the steps of obtaining a sample of atmosphere above the stream; routing the sample of air through a sensor for determining the concentration of hydrogen sulfide gas within the quantity of air determining the amount of an amine-based dopant to add to the waste water; sending a signal from the controller to a chemical injection pump for injecting the determined quantity of chemical compound into the waste water stream to absorb some of the hydrogen sulfide gas; continually monitoring the stream for determining the concentration of hydrogen sulfide gas in the stream following the introduction of chemical compound thereunto; and adding additional compound on a continuing basis, as needed, depending on the concentration of hydrogen sulfide within the stream.
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Javadi Younes
Jones Randy L.
Werner Douglas F.
Clearwater Industries Corporation
Drodge Joseph W.
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