Autoclave is a sealed apparatus for various operations that require heating under pressure above atmospheric . Under these conditions, the reaction is accelerated and the product yield is increased.
Autoclaves are: rotating, swinging, horizontal, vertical and column. The autoclave is a vessel either closed or with an opening lid. If necessary, they are equipped with internal, external or remote heat exchangers, mechanical, electromagnetic or pneumatic mixing devices and instrumentation for measuring and regulating pressure, temperature, liquid level, etc.