Patent ID: 11939536
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method for generating low salinity water for crude oil treatment processes for a continuous water recycle loop, the method comprising the steps of:
separating a gas stream from an inlet crude stream in a gas oil separator vessel;
compressing the gas stream in a gas compressor to generate a compressed gas stream;
introducing the compressed gas stream to a water separation vessel;
introducing a high salinity stream comprising water and salt and having a high salinity concentration to the water separation vessel;
contacting the compressed gas stream with the high salinity stream in the water separation vessel, such that heat transfers from the compressed gas stream to the high salinity stream wherein water from the high salinity stream evaporates generating water vapor, such that the compressed gas stream nears saturation with water;
removing a saturated gas stream from the water separation vessel;
removing a waste stream from the water separation vessel, wherein the waste stream comprises water and salt, and has a waste stream salinity concentration greater than the high salinity concentration;
cooling the saturated gas stream in an aftercooler to generate a cooled saturated gas stream, such that water condenses from the saturated gas stream; and
separating a low salinity water stream from the saturated gas stream in a knockout drum to generate an export gas stream.