Method for the generation of power

Patent metadata

Field	Value
Publication number	US-11117810-B2
Application number	US-201916294152-A
Country	US
Kind code	B2
Filing date	Mar 6, 2019
Priority date	Apr 23, 2015
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.

First claim

What is claimed is:

1. A composition comprising:
strontium carbonate; and
strontium zirconate;
where the mass ratio of strontium carbonate to strontium zirconate is 2:8 to 8:2;
wherein the composition is absorptive to solar energy; wherein the composition is porous and does not undergo sintering at a temperature of up to 1290° C.

2. The composition of claim 1 , where the composition further comprises a metal oxide, a ceramic, silicon dioxide, aluminum oxide, zirconium oxide, silicon oxide, calcium oxide, magnesium oxide, titanium oxide, or a combination thereof.

3. The composition of claim 1 , where the composition is used for energy generation.

4. The composition of claim 1 , further comprising strontium oxide.

5. The composition of claim 4 , wherein the strontium carbonate and strontium oxide result from a SrO/SrCO 3 carbonation/de-carbonation cycle comprising the reaction:
SrCO 3 SrO+CO 2
wherein the relative amounts of SrCO 3 and SrO in the composition are determined at least in part by the temperature of the composition.

6. The composition of claim 5 , wherein during one SrO/SrCO 3 carbonation/de-carbonation cycle the composition has an energy density of greater than about 1000 MJ/m 3 .

7. The composition of claim 5 , wherein during fifteen consecutive SrO/SrCO 3 carbonation/de-carbonation cycles, the composition has an energy density of greater than about 1000 MJ/m 3 .

8. The composition of claim 5 , wherein the relative amounts of SrCO 3 and SrO in the composition are determined at least in part by the partial pressure of CO 2 .

9. A structure comprising:
a porous matrix comprising strontium carbonate; and
a support comprising strontium zirconate;
wherein the porous matrix is absorptive to solar energy; and wherein the porous matrix is resistant to sintering at a temperature of up to 1290° C.

10. The structure of claim 9 , wherein the porous matrix further comprises one or more metal oxide dopants selected from silicon dioxide, aluminum oxide, zirconium oxide, silicon oxide, calcium oxide, magnesium oxide, titanium oxide, or a combination thereof.

11. The structure of claim 9 , wherein the porous matrix comprises strontium carbonate and strontium oxide that result from a reversible SrO/SrCO 3 carbonation/de-carbonation cycle comprising the reaction:
SrCO 3 SrO+CO 2
wherein the relative amounts of SrCO 3 to SrO in the composition are determined at least in part by the temperature of the porous matrix.

12. The structure of claim 11 , wherein during one SrO/SrCO 3 carbonation/de-carbonation cycle the composition has an energy density of greater than about 1000 MJ/m 3 .

13. The structure of claim 11 , wherein during fifteen consecutive SrO/SrCO 3 carbonation/de-carbonation cycles, the composition has an energy density of greater than about 1000 MJ/m 3 .

14. The structure of claim 11 , wherein the relative amounts of SrCO 3 and SrO in the composition are determined at least in part by the partial pressure of CO 2 .

Assignees

• Univ Florida

Inventors

• Klausner James
• Randhir Kelvin Fnu
• Auyueng Nicholas
• Li Like
• Rhodes Nathan
• Barde Amey Anand
• Mei Renwei
• Hahn David Worthington

Classifications

• F03G6/068

  having other power cycles, e.g. Stirling or transcritical, supercritical cycles; combined with other power sources, e.g. wind, gas or nuclear · CPC title

• F03G6/004

  of the Organic Rankine Cycle [ORC] type or the Kalina Cycle type · CPC title

• C01F11/187

  Strontium carbonate · CPC title

• Y02P20/133

  Renewable energy sources, e.g. sunlight · CPC title

• Y02E10/46

  Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines · CPC title