Furan hydrogenation catalyst, preparation method and process for producing tetrahydrofuran by using catalyst

The invention relates to the technical field of tetrahydrofuran preparation, in particular to a furan hydrogenation catalyst, a preparation method and a process for producing tetrahydrofuran by using the catalyst. The furan hydrogenation catalyst comprises a carrier and active components loaded on the carrier, the active components are metal Ni and Cu, the carrier is an Al2O3-SiO2 composite oxide, and the carrier comprises, by mass, 10%-20% of Ni, 1%-5% of Cu, 70%-90% of Al2O3 and 10%-30% of SiO2. According to the invention, the Al2O3 carrier is modified by using the structural assistant SiO2 to obtain the composite oxide carrier with moderate acidity, so that the influence of oligomer formed by furan polymerization on the activity and stability of the catalyst can be avoided; cu is adopted as an auxiliary active component, so that the cost of the catalyst is reduced, the furan conversion rate and the tetrahydrofuran selectivity in the furan hydrogenation reaction can be improved, and the high tetrahydrofuran