Polymeric membrane for separation of fluids under elevated temperature and/or pressure conditions
AssigneeBoard of Regents, The University of Texas
InventorsWilliam J. Koros, Ryan L. Burns
Life of this patent
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Abstract
A polymeric composite may be used for forming fluid separation membranes. The fluid separation membranes may go through a separation selectivity maximum as a function of operating conditions (e.g., temperature and/or pressure). The membranes may be formed from polyamide or poly (pyrrolone-imide). Polyamides may be formed by the condensation of a tetraamine, a tetraacid, and a diamine. Poly (pyrrolone-imides) may be formed by the condensation of a polyamide.
Claims147
A fluid separation membrane for separating one or more components from a fluid, the fluid comprising two or more components wherein the fluid separation membrane comprises the reaction product of a tetraamine, a tetraacid compound, and a diamine and wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively.
A fluid separation membrane for separating one or more components from a fluid, the fluid comprising two or more components wherein the fluid separation membrane comprises a poly (pyrrolone-imide) polymer, and wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively.
A method of preparing a fluid separation membrane for separating one or more components from a fluid, the fluid comprising two or more components, comprising adding a tetraacid compound to an amine composition comprising a tetraamine and a diamine to form a polymer precursor, wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively.
A method of separating one or more components from a fluid, the fluid comprising two or more components, comprising bringing the fluid stream into contact with a face of a fluid separation membrane, the fluid separation membrane comprising the reaction product of a tetraamine, a tetraacid, and a diamine, wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively.
A method of separating one or more components from a fluid, the fluid comprising two or more components, comprising bringing the fluid stream into contact with the a face of a fluid separation membrane, the fluid separation membrane comprising a poly (pyrrolone-imide) polymer, wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively. A method of separating two or more components from a fluid stream comprising bringing the fluid stream into contact with a face of a fluid separation membrane, the fluid separation membrane comprising a poly (pyrrolone-imide) polymer.
An apparatus for separating one or more components from a fluid, the fluid comprising two or more components, comprising:
- a body;
- a fluid separation membrane disposed within the body, the fluid separation membrane comprising the reaction product of a tetraamine, a tetraacid compound, and a diamine, wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively;
- a fluid stream inlet coupled to the body downstream from the fluid separation membrane;
- a first fluid stream outlet positioned upstream from the fluid stream inlet and down stream from the fluid separation membrane;
- and
- a second fluid stream outlet positioned downstream from the fluid separation membrane.
An apparatus for separating one or more components from a fluid, the fluid comprising two or more components, comprising:
- a body;
- a fluid separation membrane disposed within the body, the fluid separation membrane comprising a poly (pyrrolone-imide) polymer, wherein the fluid separation membrane exhibits a first permselectivity with respect to the components at a first temperature and pressure, and wherein the fluid separation membrane exhibits a second permselectivity with respect to the components at a second temperature and pressure, and wherein the second permselectivity is greater than the first permaselectity when the second temperature is greater than the first temperature, the second pressure is greater than the first pressure, or the second temperature and the second pressure are greater than the first temperature and the first pressure, respectively;
- a fluid stream inlet coupled to the body downstream from the fluid separation membrane;
- a fluid stream inlet coupled to the body downstream from the fluid separation membrane;
- a first fluid stream outlet positioned upstream from the fluid stream inlet and down stream from the fluid separation membrane;
- and
- a second fluid stream outlet positioned downstream from the fluid separation membrane.
Dependencies are inferred from the claim text.