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US 4,561,981 AGranted
Treatment of fouling with microcapsules
OwnerWilliam G. Characklisinventor
Life of this patent
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Abstract
A method for controlling, preventing, or removing fouling deposits comprising microencapsulating fouling control chemicals in a slow release capsule. The microcapsules are applied to the substrate to be treated, where they stick to the substrate and slowly release the active treating agents.
Claims5
A method for removing and/or inhibiting fouling deposited on an inner wall of a pipeline for transporting a fluid stream comprising the steps of:
- selecting microcapsules, said microcapsules having a specific gravity greater than said fluid stream which have an anti-fouling material encapsulated therein;
- the microcapsules being constructed of a semipermeable membrane material which slowly releases the anti-fouling material and which material adheres selectively to the fouling deposited on the inner wall of the pipeline and
- introducing an effective amount of the microcapsules into the fluid stream;
- causing the microcapsules to adhere to the fouling deposited on the inner wall and slowly releasing the anti-fouling material to remove and/or inhibit fouling deposited on the inner wall.
1 more element
A method for preventing fouling deposited on an inner wall of a pipeline for transporting a fluid stream comprising the steps of:
- selecting microcapsules which have an anti-fouling material incapsulated therein, said microcapsules having a specific gravity greater than said fluid stream;
- the microcapsules being constructed of a semipermeable membrane material which slowly releases the anti-fouling material and which material adheres selectively to the inner wall of the pipeline;
- and
- introducing an effective amount of the microcapsules into the fluid stream;
- causing the microcapsules to adhere to the inner wall and slowly releasing the anti-fouling material to prevent the formation of fouling on the inner wall.
2 more elements
Dependencies are inferred from the claim text.