Integration of Separate Ethanol and Ethylene Production Processes

2 Integration of Separate Ethanol and Ethylene Production Processes 

Direct steam injection in the pretreatment steps in ethanol production process (51.2MW) and direct steam to the ethylene reactor (25.1 MW) is not included in the heat integration analysis. This is due to the fact that this steam usage is a process requirement and cannot be replaced by heat exchange with other process streams. These amounts of steam must be added to cover the total steam demand of the processes. 

The total minimum heating and cooling demands of the two separated processes are 131MW g and The electricity demand of the ethanol dehydration 

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