The ornamental design for a distillationtankfacade, as shown and described.
FIG. 1 is a perspective front view of a distillation tank facade;
FIG. 2 is a front elevation view of the distillation tank facade; the rear elevation, left side elevation view, and right side elevation view being an identical image thereof;
FIG. 3 is a top plan view of the distillation tank facade; and,
FIG. 4 is a bottom plan view of the distillation tank facade.
The distillation tank is shown in broken lines for illustrative purposes only and forms no part of the claimed design.