Refinery desalter improvement

摘要

The improved system relates to desalting hydrocarbon feeds using a separator with a stacked disk centrifuge to separate an emulsified oil and water rag layer. This system is effective for desalting heavy, high ionic, and non-traditional crude oils.

主权项

1. A crude oil desalter system comprising:
a) a feed for a crude oil and water mixture; b) a separator connected to said feed wherein said separator comprises three or more outlets including an outgoing crude oil stream outlet, an outgoing wastewater stream outlet and an outgoing rag layer stream outlet, wherein the rag layer is an emulsion formed between the crude oil and water; and c) a disk stack centrifuge connected to said outgoing rag layer stream outlet wherein said disk stack centrifuge comprises three or more separate outgoing streams including an outgoing crude oil stream for desalted crude oil, an outgoing wastewater stream for waste water and an outgoing solids rich stream.