Process for obtaining a mixture comprising methionine and potassium hydrogen carbonate

JP2025520532A5Pending Publication Date: 2026-06-15EVONIK OPERATIONS GMBH
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Patent Information

Application Number
JP2024573903
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-06-17
Filing Date
2023-06-07
Publication Date
2026-06-15

AI Technical Summary

Technical Problem

Existing methods for recovering methionine and potassium bicarbonate from mother liquors rich in methionyl-methionine face challenges such as poor filterability due to high met-met content, leading to increased waste and energy consumption, and the need for expensive equipment.

Method used

A process involving controlled carbonation at specific pH and temperature conditions to precipitate methionine and potassium bicarbonate, with met-met content limited to 6.5% or less, ensuring easy filterability and reducing waste generation.

Benefits of technology

Achieves high yield and improved filterability of the precipitate, reducing energy and cost requirements while increasing the reuse of valuable substances, thus enhancing the economic and ecological efficiency of methionine production.

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Abstract

The present invention is in the form of potassium bicarbonate and / or potassium carbonate, methionine, A process for obtaining a mixture containing methionine and potassium bicarbonate from an aqueous solution or suspension containing titratable potassium and 4.5 to 12.0% by weight of methionyl-methionine, Supplying CO2 to the solution or suspension used at a temperature of 15 to 60 °C (carbonation) to precipitate a mixture containing methionine and potassium bicarbonate as a suspension containing on average 6.5% by weight or less of met-met, Separating the precipitate from the mother liquor, Characterized by comprising.
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