The detachable plate heat exchanger is limited by the heat resistance temperature of the rubber gasket and is suitable for water-water heat transfer. However, the general detachable plate heat exchanger has a limitation of its own structure, the use pressure does not exceed 2.5 MPa and the use temperature does not exceed 250℃, there is also a problem of compatibility of the fluid and the gasket. For detachable plate heat exchangers, The tightness of the gasket determines the performance of the entire heat exchanger. The gasket is easily damaged after repeated loosening and pressing, and it needs to be replaced. At the same time, the gasket is mechanically or bonded into the plate groove. When using the compressed asbestos gasket, the surface must be coated with an anti-adhesive agent to prevent stick to the heat exchanger plate groove.