Desalting adjunct chemistry

Details Desalting adjunct chemistry Desalting adjunct chemistry

1993-10-05

2000-09-19

Bell, Mark L.

Mineral oils: processes and products

Refining

Water removal

208251R, 210708, 210732, 204563, 204567, 507220, 507224, 507225, C10G 3304, B01D 2101, C09K 300, E21B 2100

Patent

active

061206784

ABSTRACT:
Improved performance in the phase separation of aqueous brines from hydrocarbons within an electrostatic desalter operation is obtained by the addition to the crude oil emulsions entering the desalter of an effective asphaltene dispersing amount of an alkyl phenol-formaldehyde liquid resin polymer, optionally in the presence of a lipophilic/hydrophilic vinylic polymer. The preferred resin is a nonyl phenol-formaldehyde resin having a molecular weight of from 1,000-20,000, and the preferred vinylic polymer is a copolymer of lauryl (meth)acrylate and hydroxyethyl (meth)acrylate. Best results from the electrostatic desalter are obtained when also using a demulsifier chemical treatment along with the asphaltene dispersing treatments. Desalter efficiency is increased and desalter brine effluent quality is greatly increased.

REFERENCES:
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patent: 4737265 (1988-04-01), Merchant, Jr. et al.
patent: 5021498 (1991-06-01), Stephenson et al.
patent: 5032285 (1991-07-01), Braden et al.
patent: 5073248 (1991-12-01), Stephenson et al.
patent: 5100531 (1992-03-01), Stephenson et al.
patent: 5143594 (1992-09-01), Stephenson et al.

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