Abstract: The invention provides a process for regenerating a liquid absorbent, comprising: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent comprises at least one amine of Formula (I) and degradation product thereof comprising at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.

Abstract: The invention provides a process for regenerating a liquid absorbent, including: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent includes at least one amine of Formula (I) and degradation product thereof including at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.

Abstract: The invention provides a process for regenerating a liquid absorbent, including: contacting the liquid absorbent with a hydrophobic medium, wherein the liquid absorbent includes at least one amine of Formula (I) and degradation product thereof including at least one imine of Formula (II), wherein each Ar is independently an aromatic group and each R is independently selected from hydrogen, an organyl group and NH2; and selectively extracting the degradation product into or through the hydrophobic medium.

Abstract: A process and apparatus for stripping a gas from a gas-rich liquid. The apparatus includes a desorption unit (10) to desorb a gas from the gas-rich liquid to form a first product stream (13) including the gas and a vapor, and a second product stream (14) including a gas-lean liquid. The desorption unit (10) includes a gas-rich liquid inlet (25), a first product stream outlet, and a second product stream outlet. The apparatus further includes at least one of a membrane condenser (22) and/or a membrane (evaporator 17). The membrane condenser (22) includes a membrane interface (26) permeable to the vapor through which vapor transfers from the first product stream to the gas-rich liquid stream and the membrane evaporator (17) includes a membrane interface (18) permeable to the vapor through which vapor transfers to separate a vapor portion from the second product stream (14), and an outlet for a vapor reduced second product stream.

Abstract: The invention relates to a process for removing a target gas from a gas stream rich in the target gas and to an absorbent solution for absorbing a gas, such as carbon dioxide, from a gas stream. The invention involves the use of a photoactive compound that is convertible from a first state to a second state upon irradiation to facilitate removal or collection of a target gas from a gas stream.

Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.

Abstract: A process for the capture of CO2 from gas streams, the process including contacting a CO2 containing gas stream with a compound including: a primary or non-sterically hindered secondary amine group and at least one tertiary amine or sterically hindered secondary amine group; wherein the primary or non-sterically hindered secondary amine and the nearest tertiary or sterically hindered secondary amine group are separated by a carbon chain including 3 or 4 carbon atoms and wherein the compound is a compound of Formula (I).

Abstract: The invention relates to a process for removing a target gas from a gas stream rich in the target gas and to an absorbent solution for absorbing a gas, such as carbon dioxide, from a gas stream. The invention involves the use of a photoactive compound that is convertible from a first state to a second state upon irradiation to facilitate removal or collection of a target gas from a gas stream.

Abstract: A process and apparatus for stripping a gas from a gas-rich liquid. The apparatus includes a desorption unit (10) to desorb a gas from the gas-rich liquid to form a first product stream (13) including the gas and a vapour, and a second product stream (14) including a gas-lean liquid. The desorption unit (10) includes a gas-rich liquid inlet (25), a first product stream outlet, and a second product stream outlet. The apparatus further includes at least one of a membrane condenser (22) and/or a membrane (evaporator 17). The membrane condenser (22) includes a membrane interface (26) permeable to the vapour through which vapour transfers from the first product stream to the gas-rich liquid stream and the membrane evaporator (17) includes a membrane interface (18) permeable to the vapour through which vapour transfers to separate a vapour portion from the second product stream (14), and an outlet for a vapour reduced second product stream.

Abstract: A process for the capture of CO2 from gas streams, the process including contacting a CO2 containing gas stream with a compound including: a primary or non-sterically hindered secondary amine group and at least one tertiary amine or sterically hindered secondary amine group; wherein the primary or non-sterically hindered secondary amine and the nearest tertiary or sterically hindered secondary amine group are separated by a carbon chain including 3 or 4 carbon atoms and wherein the compound is a compound of Formula (I).

Abstract: An absorption column 1 for separating CO2 and a second acid gas from a gas stream, the column comprising a first and second section (4, 5) for the absorption of CO2 and the second acid gas; a solvent inlet in the second section for the addition of liquid stream 3 including an absorbent liquid for CO2 and the second acid gas; a gas inlet (21) in the first section for the addition of a gas stream (2) containing CO2 and the second acid gas; a gas outlet (15) in the second section of the column; a first solvent outlet (22) for the removal of at least a portion of the solvent (6) from the second section of the column and a second solvent outlet (23) for solvent stream (11) from the first section of the column; and a liquid flow distributor arrangement (8) to allow a portion of the solvent to flow from the second section of the column to the first section. A method of operating the apparatus and method of solvent extraction is also disclosed.

Abstract: A process for the absorption of one or more gas(es) selected from the group consisting of carbon dioxide, hydrogen sulfide, sulfur oxides, nitrogen oxides and carbon monoxide from a fluid, the process including: providing a fluid containing the selected gas(es); and an ionic liquid absorbent, the absorbent including the components: one or more anions; one or more metal species; and optionally one or more organic cations; and optionally one or more ligands; the absorbent components being selected such that the absorbent is in a liquid state at the operating temperature and pressure of the process; with the provisos that: when the anion contains in the same molecular entity: both an amine functional group and a sulfonate functional group; both an amine functional group and a carboxylate functional group; both a phosphine functional group and a sulfonate functional group; or both a phosphine functional group and a carboxylate functional group, the metal species is not an alkali metal or alkaline earth metal; the

Abstract: The invention relates to gas separation, in particular to separation of CO2 from CO2-rich liquids, particularly from CO2 absorption liquids used in the removal of CO2 from off-gases or product flows, such as natural gas or synthesis gas. According to the invention, CO2 is separated from a CO2-rich liquid by a method comprising a step wherein, under elevated pressure, said liquid is contacted with a membrane based on polyacetylene substituted with trimethylsilyl groups such that the pressure across the membrane is at least 1 bar and that at least a part of the CO2 is transported from the liquid through the membrane.

Abstract: The invention relates to a method for the absorption of acid gases, such as CO2 and H2S, from gas mixtures. According to the invention, acid gases are absorbed from a gas mixture by contacting this gas mixture with a liquid in which is dissolved so high a concentration of an amino acid or a salt thereof that a precipitate is formed. The contact takes place in a column of the packing-free type or a column suitable for processing slurries.

Abstract: A device for monitoring the unbalance of the electric power demanded on the conductive lines of an alternating current network of a three-phase internal installation. The device applies to all networks or three-phase installations which serve single-phase type devices in terms of variable number and power.

Abstract: The power adapter (114) has a power input (17, 18) and a power output (117) connected to a plurality of power consumption points (3, 4, 6, 7, 8, 9, 11) and a load-shedding device so designed that, when the consumed power exceeds a predetermined threshold value, the supply of current to at least a predetermined number (7, 8, 11) of power consumption points is interrupted in cascase in a pre-established order until the threshold value is complied with, whereupon the supply of current to these points is then restored in the reverse order. The load-shedding device includes a transmitting circuit for delivering at the power output (117) control signals to which receiving devices (115) are selectively responsive in order to interrupt or restore the supply of current to at least a predetermined number (7, 8, 11) of power consumption points.

Abstract: In order to optimize power supply costs and reduce billing rates in terms of prices charged per kilowatt-hour, the current consumed by a domestic installation is compared with a reference value and the result is transmitted to a microprocessor. As a function of this result, the microprocessor disconnects one or a number of power outputs in cascade and in a programmable order. In addition, the microprocessor receives a signal from one output of a relay which is responsive to rate-change data transmitted over the power distribution network at 175 Hz. When the billing rate is at a high price level, the microprocessor disconnects one or a number of outputs at the same time and as a function of a program established beforehand by the user.