Ammonia → Ammonia

Participants

Reaction Steps

The sugar stream 4 is fed to a precipitation tank to precipitate 20 the calcium and magnesium. Carbon dioxide is added at a rate of 62.7 kg/hr to precipitate the calcium carbonate and magnesium carbonate salts. The precipitation 20 is carried out at ambient temperature in a tank of volume 40,000 liters. As the carbon dioxide reacts with calcium or magnesium, it produces sulfuric acid. A stream of 493 kg/hr of ammonia is added to neutralize the sulfuric acid and maintain a pH of 8.0 to 8.5. The neutralization of sulfuric acid with ammonia produces ammonium sulfate.

Provenance & Evidence