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Calcium hydroxide thermochemical energy storage system and application method thereof

An energy storage system, calcium hydroxide technology, applied in the field of solar power generation, achieves high cycle efficiency, solves the problem of inability to operate continuously and efficiently, and high energy storage density

Active Publication Date: 2021-11-26
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently on Ca(OH) 2 / CaO system for thermochemical energy storage is in its infancy

Method used

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  • Calcium hydroxide thermochemical energy storage system and application method thereof
  • Calcium hydroxide thermochemical energy storage system and application method thereof
  • Calcium hydroxide thermochemical energy storage system and application method thereof

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the present invention provides a calcium hydroxide thermochemical energy storage system, including a tower solar thermal collector, a rotary ball mill energy storage device and a steam Rankine power generation device.

[0030] The tower solar thermal collector includes a working medium fluid pump 1 and a tower solar thermal collector 5 .

[0031] The rotary ball mill energy storage device includes a CaO storage tank 10, Ca(OH) 2 Storage tank 9 and rotary ball milling reactor 13.

[0032] The rotary ball mill reactor 13 includes a reaction channel with a solid particle inlet, a solid particle outlet, a steam inlet and a steam outlet, and a heat exchange channel with a lower lower inlet, a lower upper inlet, an upper lower outlet and an upper upper outlet. Among them, the rotary ball milling reactor 13 a...

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Abstract

The invention discloses a calcium hydroxide thermochemical energy storage system and an application method thereof. The calcium hydroxide thermochemical energy storage system comprises a tower type solar heat collection device, a rotary ball milling energy storage device and a steam Rankine power generation device. The tower type solar heat collection device comprises a working medium fluid pump and a tower type solar heat collector; the rotary ball milling energy storage device comprises a CaO storage tank, a Ca (OH) 2 storage tank and a rotary ball milling reactor; the steam Rankine power generation device comprises a steam Rankine turbine, a steam power generation condenser, a steam power generation water pump, a steam power generation gate valve, a first steam power generation heat exchanger and a second steam power generation heat exchanger which are sequentially connected through a circulating pipeline; the steam Rankine power generation device further comprises a water treater; and the system further comprises a standby heat source device. The thermochemical energy storage system adopts Ca (OH) 2 / CaO, energy storage is carried out through mutual conversion between heat energy and chemical energy, three heat sources are flexibly distributed and adjusted, and a solar thermal power station can continuously and efficiently operate.

Description

technical field [0001] The invention belongs to the field of solar power generation, and relates to a thermochemical energy storage system, in particular to a calcium hydroxide thermochemical energy storage system and an application method thereof. Background technique [0002] Solar power has the advantages of wide sources and no pollution to the environment. It is an ideal clean energy that can replace fossil fuels. However, the intermittent and unstable characteristics of solar energy make it difficult to supply energy continuously and stably. Therefore, there is an urgent need to accelerate research in the field of energy storage science, in which high-temperature energy storage is an efficient potential technology to solve the intermittency and instability problems of renewable energy. Among the three main heat storage methods, sensible heat energy storage, latent heat energy storage and thermochemical energy storage, thermochemical energy storage uses reversible heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S60/20F24S50/00F22B1/02F22D1/00B01J19/28F01D15/10F03G6/06
CPCF24S60/20F24S50/00F22B1/028F22D1/003F03G6/067F01D15/10B01J19/28Y02E10/46
Inventor 凌祥宋丹阳靳晓刚张志浩王燕
Owner NANJING UNIV OF TECH
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