A kind of production technology of monosodium glutamate

The invention discloses a kind of production technology of monosodium glutamate, comprises the following steps：Glutamic acid fermentation；Extracting glutamic acid：Glutami acid fermentation liquor Jing pasteurizations, two-stage ultrafiltration obtain thalline paste and glutamic acid clear liquid, and glutamic acid clear liquid Jing is concentrated by evaporation, and separate after the electricity cooling such as continuous, obtain the α glutamic acid and separation mother liquor of crystallization；α glutamic acid is mixed with a turn brilliant mother liquor, heating and thermal insulation, separate, it is sour to obtain Bran, Bran acid and water are mixed and made into suspension, control turns brilliant pH value 4.0～5.0, temperature, turns crystalline substance into β glutamic acid, is neutralized with aqueous sodium carbonate, then Jing activated carbon decolorizings, filter, filtrate Jing particles charcoal post is decolourized except iron, Jing evaporative crystallizations, centrifugation, drying are sieved into finished product to destainer again.Present invention process reduces the discharge capacity of waste liquid in glutamate production, reduces the use of chemicals, reduces production cost, improves economic benefit, is conducive to the recycling of resource.