The enamel reactor has two structures: separated and closed. The open is the separation of body and cover, and the middle is connected with cushion and clip. Generally, the volume is less than 5000L; The closed type is a body cover integration, with a general volume of more than 5000L. The two structures have their own advantages. The open type is more convenient for disassembly. If there is a problem with the nozzle on the tank cover, it is easy to disassemble and repair separately, while the closed type has better sealing performance. Generally speaking, there are two types of open structure: flat butt welding, flange connection and flat cover.