Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium using multifunctional antifoulant compositions
This patent describes a method of inhibiting fouling deposit formation in a liquid hydrocarbonaceous medium, undergoing processing wherein in the absence of such fouling inhibition, fouling deposits would normally be formed within the medium, the method comprising adding to the medium an effective amount of an antifoulant composition. It comprises: an alkyl phosphonate phenate sulfide antifoulant compound formed from the reaction of an alkyl (C{sub 1}-C{sub 24})phenol sulfide and phosphoric acid; and at least one additional compound selected from the group consisting of: an effective antioxidant compound or compounds to inhibit oxygen based polymerization of the hydrocarbon medium; a corrosion inhibiting compound or compounds to reduce corrosion of metal surfaces in contact with the hydrocarbon medium during processing thereof; and a metal deactivator compound or compounds adapted to complex with metallic impurities in the hydrocarbon medium.
- Assignee:
- Betz Laboratories, Inc., Trevose, PA (USA)
- Patent Number(s):
- US 4927519; A
- Application Number:
- PPN: US 7-208203A
- OSTI ID:
- 6727595
- Resource Relation:
- Patent File Date: 17 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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