Power generation system and method based on carbonation calcination cycle coupling thermochemical energy storage

Through carbonation calcination cycle coupled thermochemical energy storage system, the problem of collaborative optimization of energy storage, power generation and carbon capture is solved, low-carbon and high-efficiency power generation and large-scale energy storage are achieved, flexible regulation capabilities are provided, calcination energy consumption is reduced and resource recycling is realized.

CN120487304AInactive Publication Date: 2025-08-15ANHUI JINHONG NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510961715.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-14
Publication Date
2025-08-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing technology has failed to effectively solve the problem of coordinated optimization of energy storage, power generation and carbon capture, and it is impossible to use surplus power to drive the development of energy storage and carbon capture. Traditional thermal power has high energy consumption and carbon emissions.

Method used

The power generation system that uses carbonated calcination cycle coupled with thermochemical energy storage includes a calcination reactor, CO2 turbine power generation unit, carbonation reactor and thermochemical energy storage unit. It uses reversible redox reaction materials such as Co3O4/CoO to realize energy transfer and circulation through heat exchangers and heat-carrying medium circuits, and combines the control system to control the system's operating mode in real time.

Benefits of technology

It has achieved low-carbon and high-efficiency power generation, deep carbon capture, large-scale long-term energy storage capacity, flexibly adjusts power generation power, reduces calcination energy consumption, improves the overall efficiency of the system, and has no solid waste generation in recycling resources.

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Abstract

The invention provides a power generation system and method based on carbonation calcination cycle coupling thermochemical energy storage. The power generation system comprises a carbonate calcination reactor, a COturbine power generation unit, a carbonation reactor, a thermochemical energy storage unit, a heat exchange network and a control system. According to the invention, industrial waste heat or renewable energy electric power is utilized to drive carbonate calcination to generate high-temperature COs to push the turbine to generate power; meanwhile, a calcined product CaO / MgO enters a carbonation reactor to absorb COO in smoke or the atmosphere, carbon sequestration circulation is completed, high-temperature heat needed by calcination is supplied by high-grade heat energy stored by a thermochemical energy storage unit in the charging stage, and the heat energy comes from surplus electric power or system power generation tail gas waste heat; the thermochemical energy storage unit releases heat to drive calcination in the discharging stage, and power grid peak regulation and energy time shifting are achieved. The problems of intermittency and carbon emission of traditional thermal power / wind and light power generation are solved, and integration of efficient, low-carbon and schedulable power output and carbon capture is achieved.
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