Stage wise separation processes: binary distillation, liquid-liquid extraction, solid-liquid extraction and absorption. HTU/NTU methods for the design and analysis of packed columns. Surface separation processes. Phase equilibria for multicomponent systems. Procedures for selection, design, specification and representation of pressure vessels and heat exchangers according to engineering standards and procedures. Particle size analysis. Fluid-particle interactions: drag coefficient, effect of Reynolds number. Terminal velocity, effect of shape and concentration. Drops and bubbles. Particle-particle interactions including flocculation. Flow through porous media. Darcy, Carman-Kozeny, Ergun equations. Application of fluid-particle systems: Sedimentation and thickening. Elutriation. Cyclones. Packed beds. Single phase flow. Filtration: constant pressure theory, specific resistance, equipment filter aids, centrifugal. Fluidisation: minimum fluidisation velocity, two-phase theory, bubble properties, applications. Spouting. Pneumatic and hydraulic conveying. Solids handling. Properties of granular solids and powders affecting storage and movement. Stockpiles, silos and hoppers: Feeders, convey or belts and elevators.