METHOD OF SODIUM PHOSPHATE SALTS MIXTURE PRODUCING

FIELD: chemical technology, inorganic chemistry. SUBSTANCE: method involves neutralization of phosphoric acid with sodium hydroxide or soda to mole ratio Na2O : P2O5 = 1.55-1.67, separation of impurities from solution and feeding the latter for dehydration. Firstly, phosphoric acid is neutralized to...

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Bibliographische Detailangaben
Hauptverfasser:	NIKITIN A.B, DOBROSKOKINA N.D, LERE-PLAND P.A, KESOJAN G.A, ANISIMOVA L.M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF DAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE FOODS OR FOODSTUFFS HUMAN NECESSITIES INORGANIC CHEMISTRY MAKING THEREOF METALLURGY MILK OR CHEESE SUBSTITUTES NON-METALLIC ELEMENTS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	FIELD: chemical technology, inorganic chemistry. SUBSTANCE: method involves neutralization of phosphoric acid with sodium hydroxide or soda to mole ratio Na2O : P2O5 = 1.55-1.67, separation of impurities from solution and feeding the latter for dehydration. Firstly, phosphoric acid is neutralized to complete ratio Na2O : P2O5 = 1.9-2.5 followed by additional neutralization of solution. Solution at density 1.40-1.51 is fed to dehydration. Dehydration is carried out preferably for either one stage at temperature of exhausting gases 220-270 C or for two stages at temperatures 150-200 C and 240-270 C, respectively. The end product is used in chemical and food industries. EFFECT: improved method of producing. 2 cl, 1 tbl