Base case design process integration

In this section we compare the steady-state design and the dynamic control of heat-integrated extractive and pressure-swing processes. The same numbers of trays used in the base-case designs are used in both systems. The systems have not been reoptimized for heat integration. Only partial heat integration is considered in which an auxiliary reboiler is used. 

Figure 4.4 Illustration of the heat integration approach. Upper left base case with no integration between ethanol and ethylene process. Upper right heat and material integration between the two processes. Lower heat and material integration and design of a utility system to enable site-wide heat integration...

From competing alternatives select a good base case and improve it by using the techniques of Process Integration. Determine targets for utilities, process water and mass separation agents, as well as for the equipment design. Optimise the final flowsheet. 

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