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US 2017/0362090 A1Published application
High temperature thermochemical energy storage system
AssigneeSouthern Research Institute
InventorsRyan Melsert, Santosh Kumar Gangwal, Tim A. Hansen
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Abstract
A thermochemical energy storage system and method of storing thermal energy are disclosed. The energy storing system described herein comprises a reactor comprising a CO2 sorbent comprising i) CaO and mayenite or ii) Li4SiO4, or a combination thereof, and b) a CO2 source, wherein the CO2 source is in fluid communication with the reactor to allow flow of CO2 between the CO2 source and the reactor. Further, methods are disclosed for storing thermal energy through a wide temperature range.
Claims20
A system for storing energy comprising:
- a) a reactor comprising a CO2 sorbent comprising i) CaO and mayenite or ii) Li4SiO4, or a combination thereof;
- and
- b) a CO2 source, wherein the CO2 source is in fluid communication with the reactor to allow flow of CO2 between the CO2 source and the reactor.
A method of storing energy comprising the steps of:
- a) in a reactor, heating 1) CaCO3 and mayenite or 2) Li2CO3 and Li2SiO3, or a combination thereof, thereby promoting an endothermic chemical reaction to produce CO2 and a CO2 sorbent comprising i) CaO and mayenite or ii) Li4SiO4, or a combination thereof;
- and
- b) separating the CO2 from the CO2 sorbent.
Dependencies are inferred from the claim text.