A molten salt conversion device, a molten salt heat storage system and an operation method thereof

By using a molten salt conversion device in the heat storage system, the nitro binary molten salt is converted into a nitro ternary molten salt, which solves the problem of anti-coagulation pressure caused by high melting point, improves the system stability and safety, and reduces operation and maintenance costs.

CN119756043APending Publication Date: 2025-04-04CGN SOLAR ENERGY DEV CO LTD
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Patent Information

Application Number
CN202510083920.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The high melting point of nitro binary molten salt in the heat storage system leads to high anti-coagulation pressure, affecting the stability and safety of the system, and increasing operation and maintenance costs.

Method used

A molten salt conversion device is designed to convert nitro binary molten salt into a nitro ternary molten salt with a lower melting point through heating, stirring and oxygen circulation supply device, reduce the anti-coagulation pressure, and convert it into nitro binary molten salt when needed to achieve heat storage and power generation.

Benefits of technology

It reduces the anti-condensation pressure of the heat storage system, improves the stability and safety of the system, and reduces the operation and maintenance costs, while ensuring the heat storage capacity and power generation efficiency.

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Abstract

The present invention relates to a molten salt conversion device, a molten salt heat storage system and an operation method thereof. The molten salt conversion device comprises a tank body, a heating device, a stirring device and an oxygen circulation supply device. The tank body is provided with a molten salt inlet, a molten salt outlet, a gas inlet and a gas outlet; the heating device is arranged on the tank body, and the heating device is used to heat the molten salt in the tank body; the stirring device is arranged on the tank body, and the stirring device is used to stir the molten salt in the tank body; the oxygen circulation supply device is connected to the gas inlet and the gas outlet, and the oxygen circulation supply device is used to supply oxygen into the tank body. The above-mentioned molten salt conversion device can realize the conversion between a nitro binary molten salt with a higher melting point and a nitro ternary molten salt with a lower melting point, so as to ensure the heat storage capacity and power generation efficiency, and at the same time, it can perform anti-condensation circulation at a lower temperature, reduce the anti-condensation pressure of the molten salt heat storage system, improve the stability and safety of the operation of the molten salt heat storage system, and reduce the operation and maintenance cost.
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