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This system recycles “clean” exhaust gas as fresh air supply back into production areas at a rate of 100%, a closed loop system. Offering NMP recovery efficiency of 99%, and waste heat recovery of 60% or higher.NMP Recovery consists of three primary process steps:
Adsorption: Exhaust air from lithium ion battery electrode manufacturing carrying low-concentration NMP is propelled through a zeolite wheel; the NMP emissions are captured (adsorbed) by the zeolite beads at room temperature.Desorption:
The NMP-laden “spent” zeolite is rotated around to the Desorption airflow where it is heated to 300-400°F and the NMP solvent is released into a small volume, concentrated air stream.
Collection: The small volume air stream with concentrated NMP is is cooled below the boiling point, condensing the NMP into a liquid where it can be collected and easily transported at chilled temperatures.
Global NMP waste gas recovery equipment market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Dürr provides CATL with solvent recovery technology for electrode production in Germany,The Dürr Group is delivering technology for the sustainable manufacture of lithium-ion batteries to be used in CATL’s plant that is currently being built in Arnstadt, Germany.
The order comprises several systems based on an eco-friendly process for solvent recovery in production.This prevents tens of thousands of tons of CO2 from being generated every year and enables the solvent to be reused multiple times.
The plant in Thuringia is CATL’s first production site in Europe.In battery factories, solvents are used in the manufacture of electrodes, more specifically in the coating of electrode foil.
The technology from Dürr enables the removal and recovery of these solvents—generally NMP (N-Methyl-2-Pyrrolidone), which is toxic—from the exhaust air flow.The system consists of a multi-stage condenser with integrated heat transfer, which recovers 99% of the solvent by means of condensation.
