An autoclave refers to a reactor that operates under high pressure. According to the process requirements, there are two types of autoclaves: those with agitators and those without. The structure of the former is the same as that of the agitator equipment. Its structural features are:

(1) The reactor body is a high-pressure cylinder with a relatively thick shell. To withstand high temperatures and corrosion, stainless steel is commonly used for manufacturing. There are also cases where carbon steel or low alloy steel is used for the outer shell. Stainless steel serves as the inner material and can be directly made from composite plates or linings.

(2) Generally, no holes are made on the reactor body. The connecting pipes, interfaces and accessories are all set on the reactor cover.

(3) The top of the reactor is equipped with a safety relief device, such as a safety valve, a rupture disc device, or a combination of both, etc.