Method for producing methionine
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United States of America Patent
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Nov 23, 2021
Grant Date -
Mar 11, 2021
app pub date -
Dec 12, 2018
filing date -
Dec 13, 2017
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Abstract
An object of the present invention to provide a method for producing methionine with consideration given to the environment. The production method of the present invention comprises a removal step of blowing an inert gas into a liquid containing 5-(2-methylmercaptoethyl)hydantoin and thereby diffusing ammonia remaining in the liquid to obtain an emission gas containing the ammonia, and a recovery step of bringing the emission gas into contact with a washing liquid to recover ammonia contained in the emission gas.
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