NOVELTY - Separation of a glycine product and an ammonium chloride product from glycine ammonolysis reaction liquid comprises adding catalyst methenamine water solution in a reactor, and adding solid sodium hydrogensulfite; adding an ammonolysis reaction liquid in a vacuum multi-effect evaporator to obtain a mixed crystal product of glycine and ammonium chloride; adding mixed crystal product of glycine and ammonium chloride in water, heating to 60-80 degrees C, and crystallizing to obtain industrial glycine product; and treating methenamine solution to produce a by-product agricultural ammonium chloride.    USE - Method for the separation of a glycine product and an ammonium chloride product from glycine ammonolysis reaction liquid (claimed).    ADVANTAGE - The method performs alcohol precipitation on glycine by a little methyl alcohol, saves a mass of the steam consumption at reclaiming of the methyl alcohol, and saves the consumption of the methyl alcohol. It solves the environmental pollution problem caused by wastewater.    DETAILED DESCRIPTION - Separation of a glycine product and an ammonium chloride product from glycine ammonolysis reaction liquid comprises:    (A) adding catalyst methenamine water solution in a reactor of glycine ammonolysis reaction, and adding 0.1-5 wt.% solid sodium hydrogen sulfite;    (B) adding an ammonolysis reaction liquid after finishing the reaction at 80 degrees C in a vacuum multi-effect evaporator for concentrating by controlling the temperature at less than 80 degrees C, cooling, crystallizing and filtering to obtain a mixed crystal product of glycine and ammonium chloride, controlling the volume of the evaporation and crystallization filter liquid at 5-15% of the original ammonolysis reaction liquid;    (C) adding (pts.wt.) mixed crystal product (100) of glycine and ammonium chloride in water (60-70), heating to 60-80 degrees C until completely dissolving the mixed crystal, adding the solution in a crystallizer, cooling to 60 degrees C, slowly adding methyl alcohol (90-120) for alcohol precipitation, slowly cooling and crystallizing, adding a glycine seed crystal in the crystallizer while cooling and crystallizing, cooling to 20-30 degrees C to stop crystallizing, filtering out glycine, washing the glycine by methyl alcohol (10), centrifuging, and drying to obtain industrial glycine product;    (D) adding the methyl alcohol mother liquid after alcohol precipitation and filtration in a rectifying tower to reclaim methyl alcohol, adding the ammonium chloride solution after reclaiming methyl alcohol in a multi-effect evaporator to evaporate and concentrate, cooling, crystallizing and filtering to obtain crude ammonium chloride, washing, centrifuging, and drying to obtain industrial ammonium chloride product;    (E) adding 2-5 times the volume of the water in the solution filtered from the crude ammonium chloride, adjusting pH value of the solution to isoelectric point 5.97 of the glycine, decoloring and concentrating by a nanofiltration device having a nanofiltration membrane with a molecular weight cutoff of less than 200, and stopping concentrating when the volume of the nanofiltration cut-off liquid is less than 1/6 of the volume of the transmission liquid, where the nanofiltration transmission liquid is used for dissolving the mixed crystal of glycine and ammonium chloride and is used circularly, and the nanofiltration cut-off liquid is evaporated and concentrated to produce a by-product agricultural ammonium chloride;    (F) treating methenamine solution obtained by evaporation, concentration, crystallization, and filtration of ammonolysis reaction liquid by after decoloring the methenamine solution by active carbon, returning to the glycine production system for recycling, and not recycling the solution until recycling the methenamine solution for 15-20 times, adding methyl alcohol of 2-4 times volume of the solution in the methenamine solution for alcohol precipitation to reclaim glycine, reclaiming the methyl alcohol from the methyl alcohol mother liquid by a refining device, evaporating, and concentrating the liquid without methyl alcohol and the nanofiltration cut-off liquid to produce a by-product agricultural ammonium chloride; and    (G) treating methenamine solution obtained by evaporation, concentration, crystallization, and filtration of ammonolysis reaction liquid by adding water of 2-5 times the volume of the liquid in the methenamine solution, decoloring and concentrating by a nanofiltration device having a nanofiltration membrane with molecular weight cutoff of less than 300, stopping concentrating when the volume of the nanofiltration cut-off liquid is less than 1/6 of the volume of the transmission liquid, where the nanofiltration transmission liquid is regarded as the catalyst solution for dissolving the methenamine and is used circularly, and the nanofiltration cut-off liquid is evaporated and concentrated to produce a by-product agricultural ammonium chloride.