公开(公告)号：US12054409B2

公开(公告)日：2024-08-06

申请号：US17565949

申请日：2021-12-30

Applicant: Saudi Arabian Oil Company

Inventor： Fahd Ibrahim AlGhunaimi ,  Hind Saleh Aldossary ,  Mona Saad Dossary ,  Tao Chen ,  Mohammed A. Bataweel ,  Abadi A. Mutairi ,  Norah W. Aljuryyed

IPC: C02F1/44 ,  C02F1/52 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

CPC classification number: C02F1/5236 ,  C02F1/442 ,  C02F2101/101 ,  C02F2103/08 ,  C02F2103/10 ,  C02F2209/10 ,  C02F2305/00

Abstract: A process of treating nano-filtration membrane retentate comprises introducing seawater comprising a sulfate ion concentration of greater than or equal to 3000 mg/l to the NF membrane to produce a retentate stream and a permeate stream, wherein the retentate stream has a sulfate ion concentration greater than or equal to 10,000 mg/l, and mixing barium additives comprising barium chloride dehydrate (BaCl2·2H2O), barium chloride (BaCl2), or both with the retentate stream to precipitate sulfate from the retentate stream to form barite (BaSO4) and reduce the sulfate ion concentration, wherein the barium additives are added into the retentate stream at a barium ion concentration of greater than 10,000 mg/l.

公开(公告)号：US20230227337A1

公开(公告)日：2023-07-20

申请号：US17565949

申请日：2021-12-30

Applicant: Saudi Arabian Oil Company

Inventor： Fahd Ibrahim AlGhunaimi ,  Hind Saleh Aldossary ,  Mona Saad Dossary ,  Tao Chen ,  Mohammed A. Bataweel ,  Abadi A. Mutairi ,  Norah W. Aljuryyed

IPC: C02F1/52 ,  C02F1/44

CPC classification number: C02F1/5236 ,  C02F1/442 ,  C02F2101/101

Abstract: A process of treating nano-filtration membrane retentate comprises introducing seawater comprising a sulfate ion concentration of greater than or equal to 3000 mg/l to the NF membrane to produce a retentate stream and a permeate stream, wherein the retentate stream has a sulfate ion concentration greater than or equal to 10,000 mg/l, and mixing barium additives comprising barium chloride dehydrate (BaCl2.2H2O), barium chloride (BaCl2), or both with the retentate stream to precipitate sulfate from the retentate stream to form barite (BaSO4) and reduce the sulfate ion concentration, wherein the barium additives are added into the retentate stream at a barium ion concentration of greater than 10,000 mg/l.

公开(公告)号：US20230331599A1

公开(公告)日：2023-10-19

申请号：US17722815

申请日：2022-04-18

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Fahd Ibrahim Alghunaimi ,  Tao Chen ,  Mohammed Abudullah Bataweel ,  Hind Saleh Aldossary

IPC: C02F1/52

CPC classification number: C02F1/5236 ,  C02F1/5209 ,  C02F2101/101

Abstract: A method of desulfating seawater includes adding a produced water to a sulfated seawater, forming a first precipitate, separating the first precipitate from the sulfated seawater, measuring the sulfate ion concentration of the desulfated seawater, adding a precipitating agent to the sulfated seawater, and separating a second precipitate from the sulfated seawater. Another method of desulfating seawater includes determining concentrations of sulfates in a sulfated seawater and a precipitating agent in a produced water, adding the produced water to the sulfated seawater based on the determined concentrations of sulfates in the sulfated seawater and the precipitating agent in the produced water, forming a first precipitate, separating the first precipitate from the sulfated seawater, measuring the sulfate ion concentration of the desulfated seawater, adding a precipitating agent to a sulfated seawater, and separating a second precipitate from the sulfated seawater.