System for extracting lithium from seawater by using offshore wind power and working method

Abstract

The invention discloses a system for extracting lithium from seawater by utilizing offshore wind power and a working method. Lithium ions and chloride ions in the seawater are respectively adsorbed on a positive electrode plate and a negative electrode plate through a lithium adsorption device, and a flow electrode bearing the lithium ions and the chloride ions in the lithium adsorption device enters a lithium recovery device; and under the action of a reverse electric field, lithium ions and chloride ions are separated and transported into a recovery solution in a transmembrane manner to form a lithium chloride solution, so that the extraction of lithium chloride in seawater and the continuous enrichment of lithium chloride in the recovery solution are realized. According to the invention, offshore wind power and a seawater lithium extraction system are coupled together, abundant offshore resources are fully utilized, electric energy generated by the seawater wind power generator set is utilized to carry out electrochemical lithium extraction on seawater, the lithium extraction system is driven to continuously and normally operate, lithium carbonate is continuously generated, lithium metal is extracted from seawater, and comprehensive resource utilization of the ocean is assisted.

Description

technical field [0001] The invention belongs to the fields of offshore wind energy utilization and marine lithium resource development, and in particular relates to a system and a working method for extracting lithium by utilizing offshore wind power and seawater. Background technique [0002] In the context of the global low-carbon transformation of energy, wind power, as a renewable energy power, has become a global development hotspot. About 70% of the world's area is ocean, and offshore wind energy resources are very rich, especially in deep-sea areas. Larger, more stable wind power, more conducive to the development of offshore wind power. [0003] As a power generation system, offshore wind turbine is mainly composed of three parts: wind turbine, tower and substructure. Among them, the lower structure is divided into fixed and floating platform structures. At present, wind farms in offshore areas generally use various traditional structures of through piles fixed to ...

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Problems solved by technology

At present, wind farms in offshore areas generally adopt various traditional structures of penetrating piles fixed on the seabed. However, with the increase of water depth, the use of traditional fixed structures will greatly increase the construction cost of wind farms. Therefore, in terms of investment and construction economy In the deep sea, it is necessary to develop wind turbines based on floating platforms

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