Commonwealth Scientific and Industrial Research Organisation

Ashleigh Jane Cousins

Paul Feron

Paul Hubert Maria Feron

Leigh Thomas Wardhaugh

Ramesh Thiruvenkatachari

A process for the absorption of a target gaseous component from a gas stream comprising the steps of: contacting the gas stream with an absorber comprising an liquid absorbent for absorbing the target gaseous component to produce a rich liquid absorbent stream and a non target gaseous component, said non target gaseous component including water vapour; treating the rich liquid absorbent stream in a desorber to thereby release the target gaseous component and a water vapour component into a desorber gas stream and produce a lean liquid absorbent stream; and forming a recovered water stream from the output of a water separator for separating the water vapour from the target gaseous component, said water separator forming part of the absorber and/or the desorber. The lean liquid absorbent stream exiting the desorber is treated with a forward osmosis (FO) membrane unit comprising a water permeable membrane, wherein the membrane unit transfers water from a salt water stream through the water permeable membrane to the lean liquid absorbent stream, thereby replenishing at least part of the water removed in the process.

Combined acidic gas capture and water extraction process

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

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Pullenvale, Australia

Ashleigh Jane Cousins