PROCESS FOR RECOVERING CHEMICALS IN A PROCESS FOR RECYCLING BLEND TEXTILES
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United States of America
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Mar 20, 2025
app pub date -
Sep 17, 2024
filing date -
Sep 17, 2024
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Abstract
Process to recover NaOH, polyester monomers, dyes and byproducts from an alkaline depolymerization liquor resulting from a depolymerization reaction of polyester in a blend textile. The process comprises concentrating the liquor solution in a mixture comprising water, solid NaOH, dyes and other liquid products, extracting ethylene glycol from the mixture, dissolving solid NaOH, recovering solid dyes and recovering terephthalic acid.
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