Production system and production method of specified valence electrolyte in high activity all vanadium redox flow battery

摘要

The present invention provides a system and method for producing a specific valence electrolyte solution in a highly active all-vanadium redox flow battery, and fluidizing a vanadium-containing material to have an average valence in the range of 3.0 to 4.5. It is precisely controlled to reduce to low valence vanadium oxide, and water and sulfuric acid are added and dissolved, and further activated by a microwave field to obtain a vanadium electrolyte having a specific valence. The heat exchange between the vanadium-containing material and the reducing exhaust gas and the heat exchange between the reduction product and the fluidized nitrogen gas realize efficient use of heat, and internal members and outlets with different heights are provided in the reducing fluidized bed. By installing it, accurate adjustment of the reduction product valence is realized, the chemical effect of the microwave field is used to activate vanadium ions, and the activity of the electrolyte is greatly improved. The present invention has the advantages of a short process, efficient and clean and stable product quality, suitable for large-scale industrial production, and has good economic and social benefits. [Selection] Figure 1