Prayon S.A. products

The PRAYON filter is essentially made up of a series of individual filtration pans, fixed on a circular and horizontal frame which rotates around a central distributor. The pans receive the slurry to be filtered and the successive wash liquids by means of distributing troughs. Armored hoses connect the pans to a central distributor under vacuum, which allow filtrates to discharge and, after inverting of the pan, cake discharges with the help of air back-pressure.

Each agitator is optimized using 3D simulation software, allowing a perfect match between the reactor tank and the agitator blades design. PRAYON agitator blades are specifically designed to optimize the flow and shearing effect and lead to the most efficient crystal growth.

The best way to valorize the last droplets of your production. The right positioning of the Prayon Separator in the P2O5 gas flow of your installation helps you protect condenser from scaling and corrosion. The vortex induced by centrifuge head allows a mechanical separation of the liquid droplets from the P2O5 gas flow.

An innovative solution for cleaning and recovering your production’s effluents. The particular design of the sprayer heads creates a liquid artificial cloud, allowing maximized absorption of the effluents. The vortex induced by centrifuge head allows a mechanical separation of the liquid droplets from the P2O5 gas flow.

The best-seller process to produce phosphoric acid. The Prayon Dihydrate (DH) Process is widely used by producers due to its reliability, simplicity of operation and the use of proven equipment (Profile). It consists in the attack of the phosphate rock under dihydrate conditions cooled by a specific flash cooler designed to limit the scaling. The square compartment reactor fitted with Prayon agitators provides the best available conditions on the market in terms of lifetime, maintenance and reaction efficiency. Dihydrate slurry is filtered on a Prayon tilting pan filter to recover the phosphoric acid. Depending on the rock processed, the ex-filter acid strength is typically 25-29% P2O5 and the typical P2O5 recovery efficiency is 94-95%.

Cutting-edge process to produce phosphoric acid with a high recovery efficiency. The Prayon DA-HF Process is a modern process developed and industrially implemented by Prayon. It is an economic and efficient solution to produce phosphoric acid and valuable gypsum as a co-product. It consists in the attack of the phosphate rock under dihydrate conditions. Then, the gypsum slurry is converted to hemihydrate by the addition of sulfuric acid and steam in a specific circular reactor designed by Prayon. Hemihydrate slurry is filtered on a Prayon tilting pan filter to recover a good-quality calcium sulfate. Depending on the rock processed, the ex-filter acid strength is typically 32-34% P2O5 and the typical P2O5 recovery efficiency is 97%.