June 2013

Special Report: Process/Plant Optimization

Optimize crude preheat train to balance efficiency and operability

Critical attention must be paid when designing the crude distillation unit (CDU) preheat train. Many pitfalls can easily lead to unnecessary expenditures or unsatisfactory operations. Key design crite..

Zhang, J., Foster Wheeler

Critical attention must be paid when designing the crude distillation unit (CDU) preheat train. Many pitfalls can easily lead to unnecessary expenditures or unsatisfactory operations. Key design criteria include high energy efficiency, operational flexibility and reliability. Some designers may elect to replicate a previously proven design, without full consideration of the feedstock’s characteristics. Others may focus on implementing designs with computer-aided tools to generate the heat exchanger network (HEN) without sufficient attention to the effects of heat integration on the whole plant operation. A practical and systematic design approach can integrate process design, control,

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