METHOD AND APPARATUS FOR RECOVERING ORGANIC CARBONATES
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Oct 23, 2023
filing date -
Oct 23, 2023
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Abstract
A method for recovering organic carbonates in an electrolytic solution of a waste lithium ion battery is provided. The organic carbonates include a first carbonate and a second carbonate having a higher melting point and a higher boiling point than the first carbonate. The method includes performing a temperature adjustment process in which an internal temperature of a drier in which the waste lithium ion battery is accommodated is kept in a first temperature range, an internal temperature of a pipe extending to below the drier is kept in a second temperature range, and an internal temperature of a condenser connected to the drier via the pipe is kept in a third temperature range, and performing a recovery process of reducing internal pressures of the drier, the pipe, and the condenser from a normal pressure to a first pressure and recovering the first carbonate in the condenser.
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