Old fan "huan" new machine: energy storage, cement, bridge, make clean energy more "clean"

According to reports, this research has achieved satisfactory results in the laboratory stage, ready for pilot scale. Overall, the degradation rate of epoxy resin is greater than 99%, and the recovery rate is greater than 95%. The carbon fiber recovery rate is greater than 96%, the fiber strength loss is less than 5%, and the strength index and modulus of the recovered carbon fiber monofilms are almost the same as the original fibers, which can be said to directly change the solid waste back to the raw material. "We are confident that the laboratory results will eventually be connected with actual production, and more valuable chemicals will be extracted to create greater environmental and economic benefits," Hou said.

4. New scenarios for gravity energy storage or abandoned fan blades

Recently, Italian Energy company Enel Green Power and Swiss energy storage company Energy Vault signed a cooperation agreement, claiming that they will jointly develop a gravity energy storage system made of decommissioned fan blades, which is also another exploration of the industry for the decommissioning of fan blades.

The joint statement shows that among all the components of wind farms, blades are the most difficult to recycle due to their special material properties. To this end, Enel Green Power and Energy Vault will jointly study waste wind turbine blades with a view to using them in gravity energy storage systems.

It is understood that the gravity Energy storage system is mainly developed by Energy Vault, and the technical principle is similar to the pumped storage system, the use of large solid materials as the gravity potential energy storage medium, the storage of excess power when elevated, and the release of power when needed. In July last year, the company's gravity energy storage system entered the commercial demonstration phase.

"The fan blade is mainly composed of glass fiber or carbon fiber and other materials, which has high material stability and material strength, and in the gravity energy storage system, the solid material produced by this material can effectively extend the system life and the cost is relatively low." Enel Green Power Executive Irene Fastelli.

According to the agreement between Enel Green Power and Energy Vault, the two parties have now analyzed the commercial feasibility of the method and will then study the feasibility of the application of the system in commercial power stations. If the project goes well, the results of the study on the commercial gravity energy storage power station will be available by the end of this year.

In fact, with the expiration of the life of the global wind farm decommissioning tide is gradually approaching, the industry has also accelerated the exploration of waste materials such as blades, in addition to the application of gravity energy storage system, the blade will be broken into building materials, leaf materials decomposition for recycling and other emerging ways are also more and more attention in the industry.