An Agitated Nutsche Filter Dryer (ANFD) is a closed, batch-processing vessel designed for high-purity solid-liquid separation, commonly used in pharmaceuticals, agrochemicals, and fine chemicals. It performs filtration, washing, and drying in a single machine, often using pressure/vacuum and an agitator to manage slurries, cake washing, and drying efficiently.
Key Components and Features
Vessel Structure: A cylindrical pressure vessel with a top dished head and a flat bottom, often jacketed (limpet) for heating/cooling.
Filtration System: A porous plate at the base, covered with filter cloth or mesh, separates solids from liquids.
Agitator: A bi-directional, hydraulically operated shaft with "S" curved blades that mix, smooth the cake, and discharge the dried product.
Discharge Valve: A hydraulic lateral discharge valve located on the side for easy removal of the dry powder.
Process Operation: The closed system allows for slurry filling, cake pressing, washing, heating (vacuum drying), and discharge, often using nitrogen to maintain an inert atmosphere.
