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US 12,697,589 B2Granted
Ion removal from heavy ends using electrodialysis
AssigneeTexOPCO, LLC
InventorEthan L. Demeter
Life of this patent
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Abstract
Provided are electrodialysis systems for removing ions from heavy ends. The electrodialysis systems include an electrodialysis device comprising a brine inlet stream, a heavy ends inlet stream, a brine outlet stream, and a product outlet stream, wherein the brine outlet stream comprises more acetic acid than the brine inlet stream, and the product outlet stream comprises no more than 10% the amount of ions relative to an amount of ions in the heavy ends inlet stream.
Claims10
An electrodialysis system for removing ions from heavy ends, comprising:
- an electrodialysis device comprising a brine inlet stream, a heavy ends inlet stream, a brine outlet stream, and a product outlet stream,
- wherein the heavy ends inlet stream comprises a non-aqueous organic waste stream generated from an acetoxylation process for forming vinyl acetate monomer, wherein the non-aqueous organic waste stream comprises acetic acid, ethylene glycol, vinyl acetate, ethylene, and acetate compounds,
- wherein the brine outlet stream comprises more acetic acid than the brine inlet stream, and the product outlet stream comprises no more than 15% the amount of ions relative to an amount of ions in the heavy ends inlet stream, and
- wherein the conductivity of the heavy ends inlet stream is less than or equal to 10 microsiemens per centimeter.
1 more element
Dependencies are inferred from the claim text.