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DAP (Diammonium Phosphate) production process consists of two phases: production of phosphonic acid and production of DAP.

As known, phosphoric acid is produced by two methods, the thermal method from elemental phosphorus and the wet method. By processing the phosphate ore with sulfuric acid, the product is called extracted phosphoric acid, which is cheaper than acid. Photophoric heat.

The extraction technology for extracting phosphoric acid is divided into five technologies, including three technologies for the production of dilute phosphoric acid and two technologies for the production of acidic acids. The secret of the technology is that it is easy to adapt to phosphate ore, low raw material consumption, reduced energy consumption, easy to operate, good acid quality, reusable waste PCBs .

Among the technology licensors for the production of dilute phosphoric acid are Rhone-Paulenc, Swenson Isothermal, SIAPE and Jacobs. Norsk Hydro, Prayon, Nissan. Prayon is almost exclusively licensed for all technologies that produce thin and thick acids.

About the DAP production process: From the initial design of the TVA (Tennessee Valley Authority) in 1927, many improvements have been made to reduce investment costs, lower operating costs, stable operation and lower impact. environment.

Important improvements in DAP production are the use of tube reactors for the replacement of phosphoric acid with ammonia from Jacobs - Dorroco, Uhde GmbH, ERT - Espinesa, AZF, Norsk Hydro, Raytheon and S.A.Cors.