METHOD FOR REMOVAL OF AMMONIA AND DUST FROM SPENT GAS EXHAUSTED IN PRODUCTION OF FERTILISERS Russian patent published in 2009 - IPC B01D53/58 B01D47/06 

FIELD: technological processes; chemistry.

SUBSTANCE: spent gas is supplied to the first scrubber, and cooling gas is sent to the second scrubber, and additional water is supplied to one scrubber, and water solution is sent to the other scrubber, besides both spent and cooling gas prior to exhaust of appropriate scrubber are passed through at least one droplet separator. At that additional water is sent at first to section of the first scrubber fine purification limited by droplet separator from the upper side, and from the lower side - by liquid impermeable separating plate, and sprayed to at least one droplet separator, and water solution that is produced in section of fine purification is further sent to the second scrubber.

EFFECT: lower contamination of spent gas.

5 cl, 2 dwg, 1 ex