Synthesis of Reaction and Separation Systems for Batch Processes

8 SYNTHESIS OF REACTION AND SEPARATION SYSTEMS FOR BATCH PROCESSES 

Now consider how to synthesize the reaction and separation system for a batch process. Start by assuming the process to be continuous and then, if choosing to use batch operation, the continuous steps are replaced by batch steps10. It is simpler to start with continuous process operation because the time dependency of batch operation adds additional constraints over and above those for continuous operation. 

Before steps are merged into a single piece of equipment, it must be ensured that the equipment is suitable for multiple purposes in terms of its function, size, materials of construction and pressure rating. Also, it is clear 

Finally, recycling of materials is difficult in batch processes because the connection in time cannot usually be made between the steps involved in the recycling. This is because different steps take place in different time periods. However, time can be bridged through the use of intermediate storage for the recycle. 

Example 14.2 Butadiene sulfone (or 3-sulfolene) is an intermediate used for the production of solvents. It can be produced from butadiene and sulfur dioxide according to the reaction10,11  

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