Free-flowing food grade sodium nitrite and production method thereof

Abstract

A method of obtaining a free-flowing food grade sodium nitrite, wherein the method including steps of charging a predefined amount of water in a reactor; adding dry powder of sodium nitrite (SNI) having predefined purity in the reactor under stirring conditions to obtain SNI liquor of mass sodium nitrite; heating the SNI liquor of mass sodium nitrite at 40-60° C. under stirring to completely dissolve the dry powder and transfer to evaporator feed tank through filters; feeding the SNI liquor of mass sodium nitrite in the evaporator to concentrate liquor to obtain slurry mass of SNI having 30 to 40% free salt concentration; filtering the slurry mass of SNI through centrifuge at a temperature within a range of 50° C.-65° C. to separate wet cake and mother liquor (ML), wherein the ML goes back to an external SNI liquor; drying the wet cake using a drying unit at a temperature within a range of 100° C.-140° C. continuously with cold zone operating at 25-60° C. to obtain dry SNI material; and coating the dry SNI material with a food grade additive in a blender to obtain free-flowing food grade sodium nitrite.

Dependencies are inferred from the claim text.