NOVELTY - The process comprises contacting a gas stream with an absorption solvent to obtain a gas stream with a reduced carbon dioxide content and a carbon dioxide containing absorption solvent, withdrawing a part of the gas stream with the reduced carbon dioxide content, withdrawing a part of the carbon dioxide containing absorption solvent and then heating to obtain a mixture comprising a gas phase, an aqueous liquid phase and a non-aqueous liquid phase, where carbon dioxide is predominantly present in the gas phase, and introducing a part of the mixture into a gas lift reactor.    USE - The process is useful for removing carbon dioxide from a gas stream such as natural gas, synthesis gas, obtained by (catalytic) partial oxidation and/or by steam methane reforming of hydrocarbons e.g. methane, natural or associated gas, naphtha, diesel and liquid residual fractions, gases originating from coal gasification, coke oven gases, refinery gases, hydrogen and hydrogen containing gases and flue gases.    ADVANTAGE - The process is capable of energy-efficiently and simply removing the carbon dioxide from the gas stream without the emission of the greenhouse gas into the atmosphere and the need of additional equipment.    DETAILED DESCRIPTION - The process comprises contacting a gas stream with an absorption solvent to obtain a gas stream with a reduced carbon dioxide content and a carbon dioxide containing absorption solvent, withdrawing a part of the gas stream with the reduced carbon dioxide content, withdrawing a part of the carbon dioxide containing absorption solvent and then heating to obtain a mixture comprising a gas phase, an aqueous liquid phase and a non-aqueous liquid phase, where carbon dioxide is predominantly present in the gas phase, introducing a part of the mixture into a gas lift reactor to further release carbon dioxide absorbed in the aqueous liquid phase and the non-aqueous liquid phase, withdrawing gas stream comprising carbon dioxide from the gas lift reactor, withdrawing a mixture of the aqueous liquid phase and the non-aqueous liquid phase from the gas lift reactor, and cooling a part of the mixture of the aqueous liquid phase and the non-aqueous liquid phase to obtain regenerated absorption solvent. The gas phase establishes circulation and mixing of the aqueous liquid phase and the non-aqueous liquid phase between a lower section of the gas lift reactor and an upper section of the gas lift reactor. The carbon dioxide-containing absorption solvent is heated to a temperature of 60-100 degrees C to obtain the mixture of the gas phase, the aqueous liquid phase and the non-aqueous liquid phase. The release of carbon dioxide absorbed in the aqueous liquid phase and the non-aqueous liquid phase is carried out at a temperature of 60-100 degrees C. The gas lift reactor comprises a riser connected to an upper and lower part of the reactor, a downcomer arranged around the riser, and a reactor having the form of a loop. The loop comprises a pump for pumping the mixture in the reactor, where the pump is arranged downstream of an outlet unit for withdrawing the gas stream and arranged upstream of an inlet unit for introducing the mixture.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a process for removing carbon dioxide from a gas stream.    Via line (1)    Absorber unit (2)    Heat exchager (5)    Bottom part of the gas lift reactor (7)    Upper part of the gas lift reactor. (9)