Preparation method and device of Y-type molecular sieve containing rare earth

The invention discloses a rare earth-containing Y-type molecular sieve preparation method, which comprises: S1, beating a NaY molecular sieve, humic acid and water, and filtering to form a NaY molecular sieve filter cake; s2, mixing and pulping a NaY molecular sieve, a rare earth salt and an ammonium salt-containing solution to obtain RE-NaY first-exchange molecular sieve slurry, putting the RE-NaY first-exchange molecular sieve slurry on the NaY molecular sieve filter cake, filtering to obtain a RE-NaY first-exchange molecular sieve composite filter cake, and washing, drying and roasting the RE-NaY first-exchange molecular sieve composite filter cake to obtain a first roasted molecular sieve; and S3, pulping the primarily baked molecular sieve and water, filtering to obtain a filter cake, exchanging the filter cake with an ammonium salt solution, and washing with water to obtain the rare earth-containing Y-type molecular sieve. According to the preparation method of the rare earth-containing Y-type molecular