In the chemical industry, the organic compound and solvent acetone is crucial. Typically, it is made from propylene using the oxidation process. The catalyst for the reaction is a highly corrosive mixture of copper chloride, palladium chloride, cupric acetate, and hydrochloric acid. Under a working pressure of 1.0 MPa to 1.2 MPa, the working temperature ranges from 110°C to 120°C.
All equipment, with the exception of a few non-metallic components, must be made of titanium materials due to the harsh conditions (typically Ti grade 2). Pressure vessels like the carbonylation tubular reactor, flash evaporator, oxidation seperator, catalyst regenerator, cycling pump, tubing, valves, flanges, and fittings are among the machinery and tools used in these processes. Typically, grade 2 commercially pure titanium will be used. For the joint material selection, such as flange connections, titanium with palladium addition (Grade 7) or Ti-0.3Mo-0.8Ni (Grade 12) are advised in order to prevent crevice corrosion.
