FIELD: chemistry.
SUBSTANCE: method of producing biuret and cyanuric acid through thermal decomposition of urea involves cooling the product of thermal decomposition of urea in order to settle crystals which are then dissolved in an aqueous alkaline solution and cooled to obtain high-purity biuret, and after neutralising the filtered mother solution with acid, cyanuric acid crystals are settled to obtain a suspension of cyanuric acid crystals which is then filtered to separate the crystals and washed. The invention also relates to devices for realising the given methods.
EFFECT: development of a cheap and simple method of producing biuret and high-purity cyanuric acid.
19 cl, 2 ex, 1 dwg
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