RECOVERY AND REUSE OF COMPONENTS FROM STREAMS OF WASTES FORMED DURING FINAL TREATMENT OF UREA Russian patent published in 2020 - IPC C05G3/00 C05C9/00 

FIELD: agriculture.

SUBSTANCE: invention relates to the agriculture. Method of recovery and recycling of compounds from waste streams from equipment for high-efficiency final treatment of urea involves: collecting a stream of liquid wastes from the scrubber unit with liquid, configured to clean the exhaust streams of the exhaust air; concentration of liquid wastes with formation of reduced material containing 4 wt. % or less water; combining the reduced material with untreated urea to obtain a mixture, wherein the mixture contains at least 5 wt. % urea from reduced material, and introduction of mixture into equipment for high-efficiency final treatment of urea for the purpose of combination with one or more additives which increase efficiency, wherein one or more efficacy additives are selected from urea, urease inhibitors, nitrification inhibitors, microelements, agricultural chemicals, biological preparations and mixtures thereof.

EFFECT: invention enables to recover components present in waste streams of a plant for final treatment of urea and increases efficiency of producing high-performance urea-based fertilizer.

16 cl, 4 dwg