Guochu Technology Develops Membrane Deaeration for CAES Power Plant Water
Published: 2026-09-14 14:52 Editor: Guochu Technology Views: Tags:
According to Sohu News on September 14, driven jointly by the construction of new power systems and the advancement of the "dual carbon" goals, compressed air energy storage (CAES), as a core long-duration, large-capacity, zero-carbon technology, is moving from demonstration to large-scale commercial use. Circulating cooling water, as its heat transfer medium, directly undertakes the cooling and heat exchange tasks of core equipment such as compressors, expanders, and heat exchangers. Dissolved oxygen content is a key indicator determining the anti-corrosion effectiveness of pipelines and heat exchangers as well as long-term stable system operation.
Traditional thermal deaeration and chemical oxygen removal suffer from pain points such as high energy consumption, high cost, and tendency to cause secondary pollution, making it difficult to meet the stringent demands of energy storage systems for efficiency, environmental friendliness, and stability.
In view of the operating characteristics of circulating water systems in compressed air energy storage, Guochu Technology (Xiamen) Co., Ltd. employs a novel membrane deaeration technology for circulating cooling water, which can greatly reduce the dissolved oxygen content in circulating cooling water and fundamentally suppress corrosion reactions. Its working principle is based on water flowing on one side of the deaeration membrane while vacuum is applied or gas purge is performed on the other side, or a combination of both. The deaeration membrane has many micropores that allow gas molecules to pass through while blocking the penetration of water molecules. Under the negative pressure of vacuum or gas purge, dissolved gases in the water on one side of the deaeration membrane continuously migrate through the micropores to the other side and are carried away by the vacuum or purge gas, thereby removing dissolved gases from the water. The deaeration membrane contains a large number of hollow fibers that enlarge the gas-liquid interface area, thus improving the gas removal rate. The membrane can reduce the dissolved oxygen concentration to below 1 ppb, with a deaeration efficiency of over 99.9%.
Combining the operating characteristics and technical requirements of compressed air energy storage power stations, Guochu Technology has tailor-made a professional ambient-temperature deaeration system solution with the following core advantages:
Deep deaeration, long-lasting corrosion protection: effluent dissolved oxygen is stably below 10 ppb, protecting pipelines and heat exchangers and ensuring long-term safe operation.
Chemical-free and eco-friendly, matching zero-carbon goals: no chemical addition and no secondary pollution, consistent with the green attributes of energy storage.
Ambient-temperature operation, energy saving and cost reduction: no heating required, lower energy consumption, and more economical operation and maintenance.
Adaptable to operating conditions, stable and reliable: suited to intermittent start-stop conditions of power stations, with modular deployment and stable operation.
As the "dual carbon" goals advance in depth, compressed air energy storage technology will enter a golden age of large-scale development. Guochu Technology will continue to deepen its expertise in membrane deaeration technology, building ambient-temperature physical deaeration systems suited to compressed air energy storage scenarios, providing the industry with low-cost, zero-pollution, highly reliable deaeration solutions and building a solid "water quality line of defense" for the safe operation of energy storage power stations.
Since its founding, Guochu Technology (Xiamen) Co., Ltd. has centered on membrane separation technology, dedicated to promoting novel separation technologies and continuously exploring new applications of new membrane separation technologies in fields such as biopharmaceuticals, microelectronics, metallurgy, chemicals, machinery, food, dairy, beverages, and the environment. Based on the highly differentiated needs of different customers, it provides targeted integrated filtration and purification solutions to improve product quality and meet customer needs.
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