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December 2011
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Inert Gas Dryers - Closing the Loop
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The processing of solvents often leads to problems with the high volumes of exhaust air generated and the purification thereof in compliance with the BImschG (German Federal Emission Protection Act).
Today, with the increasing production speeds in coating machines for solvent-based coating, dryers have to remove large amounts of solvent. This situation means that atmosphere driven dryers require large areas of space for their exhaust conduits and purification systems. Similarly, the monitoring measures required to prevent the formation of explosive air-solvent vapor mixture are extensive.
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For some time now the highly-rated the DRYTEC Inert Gas Dryer has offered a solution to this problem. The drying process in this machine takes place in an oxygen-reduced atmosphere (O2 < 4 vol. %), with nitrogen being used as the standard inert gas. The inert gas functions as a protective gas as well as a medium of transport for the solvent, which is separated from the gas flow in a downstream solvent recovery plant.
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The DRYTEC Inert Gas Dryer, combined with a downstream solvent recovery plant, is of particular benefit in the manufacturing of lithium-ion batteries in that it not only ensures the recovery of solvent, but also plays a major role in preventing the contamination of the coating by water during the drying process.
This year DRYTEC released its own, in-house developed, solvent recovery plant for the DRYTEC Inert Gas Dryer. This combination is distinguished by its minimal space requirements and easy integration with existing coating plants.
And, from an environmental point of view, this solution sets the benchmark. Legislation for CO2 emissions is becoming progressively stricter, and exhaust air incinerators are no longer a sustainable solution.
This solution permits a secure, future-oriented closing of the loop in solvent-based coating plants.
Questions about the DRYEC Inert Gas Dryers?
Please contact Bernward Kurpisch,
kurpisch@drytec.net (+49/40-528 747-14).
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Questions, inquiries and comments regarding the newsletter should be directed to info@kroenert.de or call us at +49-40-853 93-01.
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