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US 2002/0161059 A1Published application
Aromatic sulfonic acid demulsifier of crude oils
AssigneeExxonMobil Research and Engineering Company
InventorsRamesh Varadaraj, Cornelius Hendrick Brons
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Abstract
The invention is directed towards a chemical demulsifier formulation comprising an alkyl aromatic sulfonic acid additive and a process for demulsification and desalting crude oil using the demulsifier formulation.
Claims23
A crude oil demulsifier formulation comprising:
- about 10 wt. % to about 80 wt. % based on the weight of the chemical demulsifier formulation of an additive having the formula:
- R—Ar—SO3H
- where R is an alkyl group containing at least 16 carbons and at least one branch of an alkyl group, Ar is an aromatic group containing at least two 6-ring aromatic groups and
- about 90 wt. % to about 20 wt. % based on the weight of the chemical demulsifier formulation of a co-additive selected from the group consisting of dipropylene monobutyl ether, aromatic naphtha, isoparaffinic solvent, cycloparaffinic solvent, aromatic solvent, diethylene glycol monobutyl ether, benzyl alcohol, and mixtures thereof.
1 more element
A process to demulsify a crude oil emulsion comprising:
- adding to a crude oil emulsion a chemical demulsifier formulation comprising:
- (a) about 10 wt. % to about 80 wt. % based on the weight of the chemical demulsifier of an additive having the formula:
- R—Ar—SO3H
- where R is an alkyl group containing at least 16 carbons and at least one branch of an alkyl group, Ar is an aromatic group with at least two 6-ring aromatic groups and
- (b) about 90 wt. % to about 20 wt. % based on the weight of the chemical demulsifier of a co-additive selected from the group consisting of dipropylene monobutyl ether, aromatic naphtha, isoparaffinic solvent, cycloparaffinic solvent, aromatic solvent, diethylene glycol monobutyl ether, benzyl alcohol, and mixtures thereof
- separating said emulsion into a plurality of layers, and
- recovering demulsified crude oil.
4 more elements
Dependencies are inferred from the claim text.