Commonwealth Scientific and Industrial Research Organisation

William Conway

Graeme Douglas Puxty

Qi Yang

Paul Hubert Maria Feron

Paul Feron

Robert Bennett

Michael Webster-Gardiner

Michael Webster-gardiner

A process for absorbing carbon dioxide from a gas stream containing carbon dioxide, including the steps of contacting the gas stream with an aqueous composition including a substituted heteroaromatic compound having a six-membered heteroaromatic ring with from 1 to 3 nitrogen atoms in the heteroaromatic ring and at least one substituent wherein at least one of the substituents is of formula —RNHwherein Ris selected from Cto Calkylene and ethers of formula —R—O—R— wherein Rand Rare Cto Calkylene.

Process and system for capture of carbon dioxide

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 NH; and selectively extracting the degradation product into or through the hydrophobic medium.

Process for regenerating a liquid absorbent

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.

A process for absorbing carbon dioxide from a gas stream containing carbon dioxide, including the steps of contacting the gas stream with an aqueous composition including a substituted heteroaromatic compound having a six-membered heteroaromatic ring with from 1 to 3 nitrogen atoms in the heteroaromatic ring and at least one substituent wherein at least one of the substituents is of formula &#x2014;RNHwherein Ris selected from Cto Calkylene and ethers of formula &#x2014;R&#x2014;O&#x2014;R&#x2014; wherein Rand Rare Cto Calkylene.

A process for absorbing carbon dioxide from a gas stream containing carbon dioxide, including contacting the gas stream with an aqueous composition having a substituted heteroaromatic compound including a six-membered heteroaromatic ring comprising from 1 to 3 nitrogen atoms in the heteroaromatic ring and at least one substituent wherein at least one of the substituents is of formula &#x2014;RNHwherein Ris selected from Cto Calkylene and ethers of formula &#x2014;R&#x2014;O&#x2014;R&#x2014; wherein Rand Rare Cto Calkylene.

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New South Wales, Australia

William Conway