Caprolactam

Guichon manufactures valves specially adapted to the production of Caprolactam :

Ball and plug valve, Piston valve, Gate valve

Lift type plug valve
Type : 301

DN 1/2" to 4" Class 150 to 1500 Lbs
– Fully jacketed
– AISI 321 stainless steel
Piston valve
Type 655M

DN 1/2" to 12" Class 150 to 1500 Lbs
– Cast construction
– Stainless steel, nickel alloys, special alloys (Titanium, Zirconium..)

Piston valve
DN 6" Class 900 Lbs
– Electric actuator
– A321 stainless steel

Construction

  • Construction materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
  • Construction methods: Fabricated (Welded), Cast, Solid

Uses

  • Service conditions: High pressure, High temperature, Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Reliability, Low acoustic signature, Dead space free
  • Types of fluids: Liquids, Liquids with solid particles, Gas, Powder and powdery media, High viscosity fluids

FAQ - Caprolactam

Caprolactam – Uses of Caprolactam

Caprolactam is primarily used in the manufacture of synthetic fibers (especially Nylon 6). Caprolactam is also used in production of :
– brush bristles,
– textile stiffeners,
– film coatings,
– synthetic leather,
– plastics and plasticizers,
– paint vehicles,
– cross-linking for polyurethanes,
– lysine (synthesis).

Posted in: FAQ - Caprolactam

Caprolactam – Manufacturing process of Caprolactam

Caprolactam is an organic compound, this colourless solid is a lactam or a cyclic amide of caproic acid. Approximately 4.5 billion kilograms are produced annually. Caprolactam is the precursor to Nylon 6, a widely used synthetic polymer. Firstly, Caprolactam was prepared by the cyclization of ε-aminocaproic acid, the product of the hydrolysis of caprolactam. Given the commercial significance of Nylon-6, many methods have been developed for the production of caprolactam :

Most of the caprolactam is synthesised from cyclohexanone, which is first converted to its oxime. Treatment of this oxime with acid induces the Beckmann rearrangement to give caprolactam.

The immediate product of the acid-induced rearrangement is the bisulfate salt of caprolactam. This salt is neutralized with ammonia to release the free lactam and cogenerate ammonium sulfate. In optimizing the industrial practices, much attention is directed toward minimizing the production of ammonium salts.

The other major industrial route involves formation of the oxime from cyclohexane using nitrosyl chloride. The advantage of this method is that cyclohexane is less expensive than cyclohexanone.

The immediate product of the acid-induced rearrangement is the bisulfate salt of caprolactam. This salt is neutralized with ammonia to release the free lactam and cogenerate ammonium sulfate. In optimizing the industrial practices, much attention is directed toward minimizing the production of ammonium salts.

The other major industrial route involves formation of the oxime from cyclohexane using nitrosyl chloride. The advantage of this method is that cyclohexane is less expensive than cyclohexanone.

Posted in: FAQ - Caprolactam

Caprolactam – Recommanded valve :

Guichon Valves offers valves for Caprolactam application specially designed for viscous liquids and designed to minimize pressure drops and dead zones. Jacketed valves allow to maintain the fluid temperature to prevent solidification of caprolactam. Sealants (gaskets, seals, etc …) are selected to prevent pollution of the caprolactam.
In case of powder transport, Guichon Valves offers solutions to prevent abrasion.

Posted in: FAQ - Caprolactam