Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takao Mizuno0
Daisuke Yamashita0
Noriyuki Shimada0
Date of Patent
November 23, 2021
Patent Application Number
16771892
Date Filed
December 12, 2018
Patent Primary Examiner
Patent 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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