The main reactions occurring in a fertilizer plant are the neutralizations of ammonia with acids (nitric acid, sulfuric acid or phosphoric acid). For some application, these acids can react with ores such as magnesium oxide or calcium carbonate.
The pressurized neutralizer operates is designed to work at higher pressure. Reaction takes place at the contact between reactants and all along the thermo-siphon created by the reaction itself. Process steam generated can be used as a heating medium thus making the process energy efficient.
The atmospheric neutralizer work at atmospheric pressure. The vapors may be extracted through the vents. There is provision of installing agitator for proper mixing of reactants.
A lot of reactions can occur in these kind of reactor, such as ammonia + acids, powder + acids