Batch processes are used for manufacturing higher value products, such as specialty chemicals, pharmaceuticals and structured products. The advantage of a batch process is versatility, the disadvantage lower productivity. This chapter gives an overview of design issues of the most encountered batch operations: chemical reaction, distillation, extraction, crystallisation, filtration and drying. Particular attention is paid to batch distillation with respect to different modes of operation, optimal reflux policy and minimisation of energy consumption. With respect to batch reactors, the emphasis is put on the control of the thermal regime in exothermic reactions, with implications on safety. A case study for large-scale PVC reactors illustrates the manufacturing of large-scale industrial products.