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Diammonium Phosphate Manufacture Technology Description

Online Diammonium Phosphate Data: Manufacture, Uses and Applications

Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.

In this page you will find free data about Diammonium Phosphate, including:

  • What is Diammonium Phosphate
  • How to make Diammonium Phosphate
  • Diammonium Phosphate uses and applications

This page presents brief synopsis of Diammonium Phosphate production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:

  • Major process steps
  • Simplified, schematic flow diagram & key equipment
  • Important safety or environmental considerations
  • Economic perspective, comprising capital expenditures and/or operating expenses

All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about Diammonium Phosphate production processes presented below and others examined in Intratec reports, click here.

Diammonium Phosphate Manufacture

Diammonium phosphate (DAP) ranks among the most important phosphate-based fertilizers, not only for its high nutrient content, but also for its excellent physical properties, such as high solubility and alkaline pH around the dissolving granules.

DAP is commonly formulated in a controlled reaction of phosphoric acid with ammonia. It is typically produced in both granular form, to be used as fertilizer either directly or blended with other types of fertilizers, and in nongranular form, to be used in liquid fertilizers.

Technology Description

The following paragraphs describe a process for diammonium phosphate production from phosphoric acid and ammonia via an ammoniation-granulation process using a pipe reactor. The figure below presents a simplified flow diagram of the process.

Diammonium Phosphate Manufacture Technology - Process Flow Diagram

Ammoniation-granulation

Initially, phosphoric acid, gaseous ammonia, and scrubber liquor are directed to the pre-neutralizer reactor. The main goal of the pre-neutralization is ...

Drying, cooling and sizing

The DAP granules are dried with moderate heat at about 85°C. At this temperature, the wet fertilizer ...

Scrubbers

A scrubbing circuit that comprises four scrubbers recovers the unabsorbed ammonia gases from ...

Economic Performance

An economic evaluation of the process described was conducted on a plant with the capacity to produce ...

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This synopsis is based on the report Diammonium Phosphate Production - Cost Analysis | DAP E11A. (For more information, Click here).