Patent ID: 11951441
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A method of supplying flare gas for a flare gas recovery system, the method comprising:
supplying, at a first positive pressure, a flow of flare gas as a suction fluid from a flashback prevention device to an ejector of the flare gas recovery system;
supplying, at a second positive pressure that is at least two orders of magnitude greater than the first positive pressure, a continuous flow of regenerable amine solvent in a lean state as a motive liquid to the ejector from a primary gas sweetening unit that is in fluid communication with the flare gas recovery system; and
combining the flare gas and the regenerable amine solvent in the lean state together in the ejector to form a two-phase fluid that comprises a mixture of the suction fluid and the amine solvent in a rich state,
wherein the continuous flow of the regenerable amine solvent in the lean state is configured to increase pressure of the flare gas to allow for delivery of the two-phase fluid either directly or indirectly back to the primary gas sweetening unit.