The basic principle of the catalytic hydrogenation deacetylene process is to react acetylene and hydrogen under the action of a catalyst to generate unsaturated hydrocarbons such as ethylene and propylene. Catalysts generally use metals such as nickel or copper, and common carriers include alumina, aluminum silicate, etc. Operating conditions include reaction temperature, reaction pressure and catalyst selection. According to relevant query information, the reaction temperature is between 100°C and 250°C, and the reaction pressure is between 0.1 and 10 MPa. The selection of catalyst should be determined according to the specific reaction conditions. During the reaction process, attention needs to be paid to maintaining the stability of the reaction temperature and pressure, as well as the stability and activity of the catalyst.