Stickstoffdünger

Guichon fertigt Sonderarmaturen zur Herstellung von Stickstoffdünger

Ablassventile, Keilplattenschieber, Kugelhähne, Rückschlagklappen Schaugläser & Siebfilter

FAQ
Kugel-Rückschlagklappe
Typ : 904

DN 15 bis 200 PN 10 bis 100

Edelstähle, Duplexstähle, Nickellegierungen, Sonderstähle

Kugel-Rückschlagklappe
Typ : 904
Kegelbodenventil
Typ : 652M

DN 80 PN 150 Lbs
– Pneumatischer Membranantrieb mit Elektro-pneumatischem Stellungsregler u. Filter-Regler
Kegelbodenventil 
Typ : 652M

Herstellung

  • Materialen C-Stahl (CS), Edelstahl (SS), Duplex & Super Duplex, Titan (Ti), Zirkonium (Zr), Uranus® B6, Tantal (Ta), Nickel (Ni), Hastelloy®, Monel
  • Konstruktion Schweisstechnik, Gusstechnik, Aus dem Vollen (Monoblock)

Verwendung

  • Betriebsbedingungen Hochdruck, Hochtemperatur, Tieftemperatur, Abrasion, Korrosion, Hochviskosität, Vakuum, Langlebigkeit, Geräuscharmut, Totraumfreiheit
  • Medien Flüssigkeiten, Flüssigkeiten mit festen Bestandteilen, Gas, Pulver und pulverartige Medien, Viskose und hochviskose Medien

FAQ - Stickstoffdünger

Stickstoffdünger – Chemische Formel :

Anhydrous ammonia (NH3),Ammonium sulfate (NH4) 2SO4, ammonium nitrate (NH4NO3)

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Stickstoffdünger – Anwendungen von Stickstoffdünger :

Nitrogen fertilizers are the most commonly used fertilizer in agriculture

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Stickstoffdünger – Herstellungsprozess von Stickstoffdünger :

Nitrogen fertilizers represent a major industry worldwide accounting for nearly 100 million tons of various products per year. Nitrogen fertilizers include many types of liquid and solid products, among which the most common ones are ammonia, ammonium nitrate, and urea.

Ammonia is produced by reacting nitrogen from the air with hydrogen from natural gas at high pressure and temperature using the Haber process (200-300 bars and around 450°C). Anhydrous ammonia is stored as a liquid under pressure or refrigerated. For ease of handling, it is often converted to other types of fertilizers (see the following flow chart).

Example of nitrogen fertilizers process

As a first step, nitric acid is produced by mixing ammonia and air in a tank followed by the absorption of the nitric oxide gas in water. Concentrated nitric acid (50 to 70 %) and ammonia gas are then mixed together in a tank and a neutralization reaction occurs at 100-180 °C, producing ammonium nitrate.

Another important nitrogen-based fertilizer is the urea, which is produced by a reaction of ammonia with carbon dioxide at high pressure. Both ammonium nitrate and urea can be further concentrated and converted into a solid form (prills or granules). Another process step can combine urea with ammonium nitrate solution to make liquid urea ammonium nitrate or UAN.

Equipment failure because of nitric acid corrosion can be avoided by the use of austenitic stainless steel.

Posted in: FAQ - Stickstoffdünger