METHOD FOR REMOVING HYDROCARBONS FROM A VAPOUR-GAS MIXTURE AND A DEVICE FOR CARRYING OUT SAID METHOD
The invention relates to cleaning hydrocarbons out of a gas-vapor medium ejected to the atmosphere, formed while storing oil or gasoline or filling a container therewith and can be used in a pumping and effecting plant. A gas-vapor medium is pumped out and compressed in a gas-liquid jet apparatus (2...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The invention relates to cleaning hydrocarbons out of a gas-vapor medium ejected to the atmosphere, formed while storing oil or gasoline or filling a container therewith and can be used in a pumping and effecting plant. A gas-vapor medium is pumped out and compressed in a gas-liquid jet apparatus (2) due to energy of oil or gasoline supplied by a pump (1). The formed mixture is separated in a separator (3), and gas from the separator (3) is compressed in a jet apparatus (5) by oil or gasoline supplied by a pump (4). The formed mixture is separated in a separator (17). Gas from the separator (17) compressed in a jet apparatus (16) by an absorbent supplied by a pump (6). The formed mixture is separated in a separator (18) where a pressure of 0.7 MPa to 2.5 MPa is maintained. The gas medium cleaned from hydrocarbons is outputted from the separator, and the saturated absorbent is directed to a desorber (7) where a pressure is generated to be lower than the pressure in the separator (18). Then, the regenerated absorbent is supplied to an inlet of the pump (6). The liquid medium is removed from the separators (3) and (17) to a container (10) to be filled or to a storage tank (11) from which oil or gasoline is simultaneously supplied to inlets of the pumps (1) and (4) or to the separators (3) and (17). The plant can comprise an additional jet apparatus (31) and a predesorber (35). The predesorber is coupled at a liquid inlet to the separator (18), is coupled at a partially degassed absorbent outlet to the desorber (7), and is coupled at a gaseous hydrocarbons outlet to the jet apparatus (2). The invention allows reduction of oil or gasoline losses, decrease of energy consumption, and increase of the efficiency of cleaning hydrocarbons out of a gas-vapor medium ejected to the atmosphere and formed while storing oil or gasoline or filling a container with oil or gasoline. |
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