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US 8,617,292 B2Granted
Method of obtaining carbon dioxide from carbon dioxide-containing gas mixture
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsDavid J. Hasse, Sudhir S. Kulkarni, Edgar S. Sanders, Jr., Jean-Pierre Tranier, Paul Terrien
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Abstract
Disclosed are methods of obtaining carbon dioxide from a CO2-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures.
Claims45
A method of obtaining carbon dioxide from a CO2-containing gas mixture, said method comprising the steps of:
- obtaining a CO2-containing gas mixture;
- cooling the gas mixture to a temperature from 5° C. to about −60° C.;
- flowing the cooled gas mixture into a gas separation membrane module made of a polymeric material to produce a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the polymeric material has a CO2 solubility at 35° C. and 10 bar pressure of >0.03 [(cm3 of CO2 at STP)/(cm3 of polymeric material)(cmHg)] and a glass transition temperature of >210° C.;
- compressing the carbon dioxide-rich stream;
- at least partially condensing the compressed carbon dioxide-rich stream through cooling;
- subjecting the cooled, compressed carbon dioxide-rich stream to cryogenic phase separation to produce a CO2 rich liquid and a CO2 lean vapor stream;
- and
- combining the CO2 lean vapor stream with the CO2-containing gas mixture.
5 more elements
A method of obtaining carbon dioxide from a CO2-containing gas mixture, said method comprising the steps of:
- obtaining a CO2-containing gas mixture;
- cooling the gas mixture;
- flowing the cooled gas mixture into a gas separation membrane module made of a polymeric material to produce a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the polymeric material has a CO2 solubility at 35° C. and 10 bar pressure of >0.03 [(cm3 of CO2 at STP)/(cm3 of polymeric material)(cmHg)] and a glass transition temperature of >210° C.;
- compressing the carbon dioxide-rich stream;
- at least partially condensing the compressed carbon dioxide-rich stream through cooling;
- and
- subjecting the cooled, compressed carbon dioxide-rich stream to cryogenic phase separation to produce a CO2 rich liquid and a CO2 lean vapor stream, wherein the polymeric material is a polysulfone having repeating units of formula (II)
- wherein:
- q=s;
- each R3 is a moiety independently selected from the group consisting of a molecular segment of formula t, formula u, and formula v
7 more elements
A method of obtaining carbon dioxide from a CO2-containing gas mixture, said method comprising the steps of:
- obtaining a CO2-containing gas mixture;
- cooling the gas mixture;
- flowing the cooled gas mixture into a gas separation membrane module made of a polymeric material to produce a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the polymeric material has a CO2 solubility at 35° C. and 10 bar pressure of >0.03 [(cm3 of CO2 at STP)/(cm3 of polymeric material)(cmHg)] and a glass transition temperature of >210° C.;
- compressing the carbon dioxide-rich stream;
- at least partially condensing the compressed carbon dioxide-rich stream through cooling;
- and
- subjecting the cooled, compressed carbon dioxide-rich stream to cryogenic phase separation to produce a CO2 rich liquid and a CO2 lean vapor stream, wherein the polymeric material is a poly (fluorocarbonate) selected from the group consisting of poly (tetrachlorohexafluorocarbonate) and poly (tetrabromohexafluorocarbonate).
4 more elements
A method of obtaining carbon dioxide from a CO2-containing gas mixture, said method comprising the steps of:
- obtaining a CO2-containing gas mixture;
- cooling the gas mixture;
- flowing the cooled gas mixture into a gas separation membrane module made of a polymeric material to produce a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the polymeric material has a CO2 solubility at 35° C. and 10 bar pressure of >0.03 [(cm3 of CO2 at STP)/(cm3 of polymeric material)(cmHg)] and a glass transition temperature of >210° C.;
- compressing the carbon dioxide-rich stream;
- at least partially condensing the compressed carbon dioxide-rich stream through cooling;
- and
- subjecting the cooled, compressed carbon dioxide-rich stream to cryogenic phase separation to produce a CO2 rich liquid and a CO2 lean vapor stream, wherein the polymeric material is a condensation polymer of 2,2,2-trifluoroacetophenone with biphenyl ether, terphenyl ether or both biphenyl ether and terphenyl ether.
4 more elements
A method of obtaining carbon dioxide from a CO2-containing gas mixture, said method comprising the steps of:
- obtaining a CO2-containing gas mixture;
- cooling the gas mixture;
- flowing the cooled gas mixture into a gas separation membrane module made of a polymeric material to produce a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the polymeric material has a CO2 solubility at 35° C. and 10 bar pressure of >0.03 [(cm3 of CO2 at STP)/(cm3 of polymeric material)(cmHg)] and a glass transition temperature of >210° C.;
- compressing the carbon dioxide-rich stream;
- at least partially condensing the compressed carbon dioxide-rich stream through cooling;
- and
- subjecting the cooled, compressed carbon dioxide-rich stream to cryogenic phase separation to produce a CO2 rich liquid and a CO2 lean vapor stream, wherein the gas mixture is cooled to a temperature from about −20° C. to about −50° C.
4 more elements
Dependencies are inferred from the claim text.