Salt solution desalination power generation system capable of driving ion separation by mechanical energy

The mechanically driven ion separation system uses reverse osmosis membranes and cation and anion exchange membranes to separate water molecules and ions, enabling salt solution desalination and power generation. This solves the problem of low energy conversion efficiency of solid materials due to the piezoelectric effect, and improves energy utilization efficiency and application scenarios.

CN223942606UActive Publication Date: 2026-02-24TAIYUAN NO 12 MIDDLE SCHOOL
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Patent Information

Application Number
CN202520535065.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-02-24
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

When existing piezoelectric effects rely on solid materials, the energy conversion efficiency is low and the application scenarios are limited, making it difficult to achieve an efficient combination of salt solution desalination and power generation.

Method used

A salt solution desalination and power generation system that uses mechanical energy to drive ion separation separates water molecules and ions using reverse osmosis membranes and anion and cation exchange membranes. Combined with an energy storage device, it realizes functions such as salt solution desalination, power generation, and production of hydrogen, oxygen, acids, and alkalis.

Benefits of technology

It improves energy conversion efficiency, enabling efficient desalination and power generation of brine solutions, while producing clean energy and industrial raw materials, which aligns with the concept of a circular economy.

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Abstract

A salt solution desalination power generation system for ion separation driven by mechanical energy belongs to the technical field of electrochemistry and comprises a main chamber, a cation exchange chamber, an anion exchange chamber, a piston and an energy accumulator, a main water inlet and a main water outlet are respectively arranged on the bottom surface of the main chamber, a reverse osmosis membrane is arranged at the main water outlet, and the piston is arranged at the top of the main chamber. The cation exchange chamber and the anion exchange chamber are oppositely arranged on the left side and the right side of the main chamber, the lower parts of the anion exchange chamber and the cation exchange chamber are communicated with the lower part of the main chamber, and anion exchange membranes and cation exchange membranes are respectively arranged at the communicated parts; the use method comprises the following steps: driving water molecules in a salt solution to be discharged through the reverse osmosis membrane by using pressure, and synchronously driving charged ions in the salt solution to pass through the anion exchange membrane and the cation exchange membrane, so that anions and cations respectively enter different chambers to generate potential difference. The system can realize the functions of power generation, salt solution desalination, hydrogen production, oxygen or chlorine production, acid production, alkali production and the like, and is an integrated system capable of synchronously realizing multiple functions.
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