JACKETED AUTOCLAVE DEVICE FOR PRODUCTION OF POLYAMIDES

摘要

A polymerization autoclave having an exterior heating assembly can include an autoclave vessel body, an autoclave inlet, a pressure release valve, and a heating conduit. The autoclave vessel body defines an interior reaction chamber within which a polymerization reaction can occur. The autoclave vessel body is also of a steel alloy. The heating conduit is wrapped around and attached to a heat transfer portion of the outer surface. The heating conduit has multiple wraps around the autoclave vessel body such that heating fluid can be circulated through the heating conduit to transfer heat into the interior reaction chamber across the heat transfer portion. The heating conduit is formed of a chromium-molybdenum steel alloy. The heating conduit is also attached to the heat transfer portion so as to substantially avoid low cycle fatigue damage from repeated cyclic temperature differentials greater than 80 °C.