All titanium vessels refer to the main parts, such as the shell, head, and nozzle, which are made of titanium, the secondary parts can be made of non-titanium. For example, the looper flange and its connecting bolts can also be made of carbon steel.
The minimum thickness of all titanium vessel shells is 2mm, which is mainly considered to meet the requirements of the welding process for thickness and geometric dimension tolerance during manufacturing, and meet the stiffness requirements required in the process of manufacturing, transportation, and hoisting; And save titanium materials and reduce costs.
Design selection principle
Because the mechanical strength of titanium decreases when the temperature is greater than or equal to 200 ℃, and the elastic modulus of titanium is low, the application of all titanium structures in high temperature, high pressure, or medium pressure, and large equipment is not suitable.
The service temperature of all titanium pressure vessels should not exceed 250 ℃, and it is considered that it is economical to choose all-titanium structures for small and medium-sized vessels with a pressure of 0.5MPa and a temperature below 150 ℃. Considering the investment cost, it may not be economical to use pure titanium when the thickness is greater than 13mm.
What are its structural requirements? Today's industry knowledge is shared with you.
Structural requirements for all titanium vessels
