Urea phosphate processing system

The utility model relates to the field of urea phosphate processing, and discloses a urea phosphate processing system which comprises a phosphoric acid pretreatment unit and a urea phosphate synthesis unit, the phosphoric acid pretreatment unit comprises a phosphoric acid recovery tower, the upper p...

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Bibliographische Detailangaben
Hauptverfasser:	QING CAIXIA, CHEN GUOPING, CHEN MINGCUI, ZUO JIAO, NIE SHUANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model relates to the field of urea phosphate processing, and discloses a urea phosphate processing system which comprises a phosphoric acid pretreatment unit and a urea phosphate synthesis unit, the phosphoric acid pretreatment unit comprises a phosphoric acid recovery tower, the upper part of the phosphoric acid recovery tower is communicated with a waste phosphoric acid feeding pipe, and the middle part of the phosphoric acid recovery tower is communicated with a desalted water feeding pipe; the discharge end of the phosphoric acid recovery tower is connected with a reboiler; the urea phosphate synthesis unit comprises a reaction kettle and a continuous crystallizer. When waste phosphoric acid is pretreated, desalted water is introduced into the phosphoric acid recovery tower, so that the removal rate of heteroacid in phosphoric acid can be increased, and the yield of phosphoric acid is increased; after the urea phosphate is synthesized, various metal ions, especially heavy metal ions, brought i