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US 4,086,066 AGranted
Method for preventing microorganism induced corrosion of hydrocarbon liquid storage tanks
AssigneeNalco Chemical Company
InventorArthur R. McDermott
Life of this patent
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Abstract
Microorganism induced corrosion of storage vessels which contain a heel of water and an upper layer of hydrocarbon liquid may be prevented by adding to the hydrocarbon liquid contained in such storage vessels a water-dispersible polyvinyl alcohol package which contains a microbiocide.
Claims6
A method for preventing microorganism induced corrosion of a storage vessel which contains a small lower layer of water and a large upper layer of a hydrocarbon liquid by introducing a microorganism control chemical into the small lower layer of water which comprises:
- (A) placing the microorganism control chemical inside a polyvinyl alcohol package;
- (B) sealing the polyvinyl alcohol package;
- (C) dropping the polyvinyl alcohol package into the storage vessel so that it can penetrate the large upper layer of hydrocarbon liquid and pass into the small lower layer of water;
- and,
- (D) permitting the polyvinyl alcohol package to dissolve in the water thereby releasing the microorganism control chemical.
2 more elements
Dependencies are inferred from the claim text.