Batch Agitated Pan Dryers. Pan dryers consists of a circular, pressure-rated vessel with a flat or conical-shaped bottom. An agitator, often heated, can be bottom mounted or top mounted. Top mounting is preferred for most pharmaceutical applications because it eliminates dead spots where product can accumulate. The vessel top head, sidewall, and base are provided with a heated jacket to reducing the likelihood of solvent condensing on these surfaces during the drying operation. The top-mounted agitator is provided with both rotational and up and down movement. The agitator for a pan dryer provides good mixing and efficient contact between the product and the heated vessel surfaces, including the agitator itself. The agitator also helps discharge dried solids. A large nozzle, mounted on the sidewall, is opened, and the agitator arms push product through the opening whenever they pass by it.