Different processes for diammonium phosphate (DAP) production are described, with different effects of heat balance, water balance, ammonia balance and neutralization degree control.

For maintaining the system's stable working, adding hydrazine or ammonia to feed-water and phosphate to boiler water are the common methods of adjusting water quality.

The production practice of the new RW process for anhydrous ammonia production with ammonium phosphate absorbing ammonia shows that all indexes have reached the design requirements.