The present invention pertains to a method for producing methionine or salts or derivatives thereof from hydrogen cyanide (HCN), the method comprising a step of producing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN), or a crude product mixture comprising MMP-CN, by contacting a hydrogen cyanide (HCN) process gas mixture prepared according to the Andrussow process from methane, ammonia and oxygen, with 3-methylmercaptopropionaldehyde (MMP), wherein the HCN process gas mixture is obtained from the crude HCN process gas mixture by adjusting the amount of ammonia to between 20 % (v/v) and 60% (v/v) of the amount of the ammonia in the crude HCN process gas mixture.
本发明涉及一种从
氰化氢(HCN)中生产蛋
氨酸或其盐或衍
生物的方法,该方法包括通过将
甲烷、
氨和氧按照Andrussow工艺制备的
氰化氢(HCN)工艺气体混合物与3-甲基巯基
丙醛(MMP)接触,从而产生
2-羟基-4-(甲硫基)丁腈(MMP-CN)或包含MMP-CN的粗产品混合物的步骤,其中通过调整
氨的量使得HCN工艺气体混合物的
氨量在粗H
氰工艺气体混合物中的
氨量的20%(体积/体积)至60%(体积/体积)之间来获取HCN工艺气体混合物。