Essigsäure

Guichon fertigt Sonderarmaturen zur Herstellung von Essigsäure

Ablassventile, Absperrventile, Keilplattenschieber, Kugelhähne, Absperrklappen, Rückschlagklappen Schaugläser & Siebfilter

FAQ
Rückschlagklappe
Typ : 902

DN 15 bis 600 PN 10 bis 420

Edelstähle, Duplexstähle, Nickellegierungen, Sonderstähle

Rückschlagklappe 
Typ : 902
Schauglas
Typ : 803

DN 15 bis 200 PN 10 bis 40
– Anschluss feste oder geschraubte Flansche
Edelstähle oder Sonderlegierungen
Schauglas 
Typ : 803

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 - Essigsäure

Essigsäure – Anwendungen von Essigsäure :

– Manufacture of acetic anhydride, cellulose acetate, vinyl acetate monomer, other acetates, acetylsalicylic acid, chloroacetic acid …
– Manufacture of pharmaceuticals, dyes, insecticides, photographic, …
– Food industry (production of fruit vinegar …)
– Textile Industry,
– Component of cleaning agent in the manufacture of semiconductors,
– Coagulant Natural Latex,
– Bacteriostatic agent (medical applications of acetic acid solutions)

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Essigsäure – Herstellungsprozess von Essigsäure :

Acetic Acid is a largely used industrial product, with a world demand of about 6 million tons per year. Most of the production processes are based on the carbonylation of methanol promoted by an iodine compound and catalysed by Rhodium catalyst (Monsanto process) or Iridium catalyst (Cativa process). Monsanto method was used intensively until 1996 when BP Chemicals introduced the Cativa process, which is a more efficient technology that significantly reduces the cost and produces a high quality acetic acid with very low impurity content.

Iridium-based catalyst is responsible for a series of major improvements on the carbonylation of methanol process. Being more stable allows to extend the previously limited operating conditions. For instance a highly concentrated methanol feed can be used (0.5% water) instead of a 10% water content in Monsanto. This greatly reduces the impact of the side reaction between water and carbon monoxide and consequently improves the selectivity. The overall impact is a less expensive downstream purification process of the acetic acid compared to the technology used in Monsanto process. To be more specific, the new configuration uses a compact two distillation columns configuration.The major units of a commercial scale Cativa methanol carbonylation plant are shown in the following figure.

Figure 1. Simplified process flowsheet for a Cativa-based acetic acid plant

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Essigsäure – Empfohlene Ventile :

the valves involved in the acetic acid manufacturing process have to resist to severe corrosion

Posted in: FAQ - Essigsäure