Fluid separation system
AssigneeStatoil ASA
InventorsBernt H. Torkildsen, Martin Sigmundstad, Harald Linga, Finn P. Nilsen
Life of this patent
Estimating the term…
Abstract
A method of removing acid gas components from a gas mixture. Certain embodiments of the method involve bringing the gas mixture into contact with a liquid solvent or reagent for the acid gases in a first turbulent contactor and subjecting the gas mixture and liquid to turbulent mixing conditions. This causes the acid gas to be absorbed by the solvent or reagent. The fluid mixture is passed into a second turbulent contactor and subjected to further turbulent mixing conditions causing further acid gas to be absorbed by the solvent or reagent. Optionally the fluid mixture is separated into a gas phase and liquid phase.
Claims28
A method for removing one or more selected gas components from a gas stream which comprises:
- bringing the gas stream into contact with a liquid including a solve it or a reagent for a selected component in a first turbulent contactor;
- subjecting the gas stream and the liquid to turbulent mixing conditions in the contactor thereby causing a selected gas component to be absorbed by a respective solvent or reagent in the liquid;
- passing the fluid mixture into a second turbulent contactor;
- and subjecting the fluid mixture to further turbulent mixing conditions in the second contactor, thereby causing further absorption of the same selected gas component, or absorption of another selected gas component, by a respective solvent or reagent;
- the method being a continuous process with the gas stream and liquid flowing co-currently, and at least one of the turbulent contactors comprising a vessel having a gas inlet, a liquid inlet, an outlet leading to a venturi passage, and a tube extending from the outlet back into the vessel.
An apparatus for removing a gas component from a gas stream comprising:
- a first turbulent contactor having a liquid inlet, a gas inlet and a fluid outlet;
- a second turbulent contactor having at least one fluid inlet and a fluid outlet, at least one of the turbulent contactors comprising a vessel having a gas inlet, a liquid inlet, all outlet leading to a venturi passage, and a tube extending from the outlet back into the vessel;
- a cooler for the fluid stream from the fluid outlet of the second turbulent contactor, a hydrocyclone or a gravity vessel arranged to separate the cooled fluid stream into a gas phase and a liquid stream;
- a regenerator arranged to treat the separated liquid stream, and a recycle line arranged to convey the regenerated liquid stream to either the first or second contactor or to a reservoir tank.
A method of using more than one turbulent contactor for selectively absorbing one or more selected gas components from a gas stream, comprising:
- using at least one turbulent contactor to bring the gas stream into contact with a liquid including solvents or reagents for the selected gas components, wherein an absorption rate of reaction for the selected gas components is different, thereby causing the selected gas components to be absorbed separately, wherein at least one of the turbulent contactors comprises a gas inlet, a liquid inlet, an outlet leading to a venturi passage and a tube extending from the outlet back upstream.
Dependencies are inferred from the claim text.