This site does not use cookies. Your personal data will not be processed by using cookies.<ACCEPT>. For more information, see our <DATA PROTECTION NOTICE>.
HOME PRODUCTS MARKET SECTORS CATALOGUE CONTACT

Industry Applications - Phosphoric Acid

   
Weir Type

With the ever increasing demand for higher yielding crops the demand for high grade fertilisers has tripled over the last few decades.

The demand in particular for phosphate based fertilisers has seen the biggest increase and trend for production of these fertilisers is increasing year upon year.

   

The major countries producing phosphate based fertilsers are Morocco, and the Southern States of North America.

The major starting point for the phosphate fertilisers is phosphoric acid and the production of the acid is mainly produced using the wet process. (see Diaval application Sheets)

Very simply, phosphate rock is reacted with sulphuric acid to produce the phosphoric acid and bi-products of gypsum and various acid gases.

To the Plant Enginer and Corrosion Chemist the reaction is a simple one and the choice of valves and pumps straight forward.

However the practical side of the process is far more demanding.

Firstly their is the phosphate ore or rock to handle, then the application of highly corrosive chemicals and finally the impurites such as fluorides to contend with.

The use of glass lined reaction vessels and valves can not be considered due to attack by fluoirde.

To the Plant Engineer and Corossion Chemist, the availablity of Diaval Diaphragm Valves has solved many of the practical problems.

Diaval Diaphragm Valves, with their avalability of many linings and diaphragm grades have shown to be the major choice when considering valves to handle phosphoric acid.

Isobutylene is perhaps the most economic of linings avalable offering both resistance to the phosphoric acid and fluorine derivatives found in the acid.

In the more critical areas the use of Austenic Stainless Steels offer the Corossion Chemist accepable low corrosion rates of between 0.03 and 2.0 mm/year.

In more recent years the introduction of flurocarbon linings has added to the choice of materials available in handling phosphoric acid.

Diaval is able to offer the Plant enginer and Corrosion chemist the widest range of polymer linings and ‘all-metal’ diaphragm valves for the handling of phosphoric acid.

With many years of experience in the application of diaphragm valve materials to handle phosphorice acid please contact the Diaval Technical Section.

     
Market Sectors
Market Sectors
Utilities
Utilities
 
Downloads
Downloads
On-line Enquiries
On-line Enquiries
 
   
SITE MAP LEGAL & DATA PROTECTION NOTICE CORPORATIVE WEBSITE