NOTE: Restrictions are in place to limit access to one or more of the files associated with this item. Authorized users must log in to gain access. Non-authorized users do not have access to these files.
Visit the Energy Systems Laboratory Homepage.
Design of Crude Oil Pre-Heat Trains
MetadataShow full item record
Pre-heat trains differ from most other heat recovery networks in a number of important ways. Combination of factors gives rise to the need for a design procedure specific to pre-heat trains. Outlining these factors, we first observe that one cold stream (the incoming crude) dominates the heat demand. We next observe that the heat recovery comes from streams a number of streams having similar temperature spans. Looking at typical Composite Curves (Figure 1) we observe that rather than the presence of a distinct and clear 'pinch point', the curves are close together over quite a large temperature region. Consideration of the process leads to the observation that the heating is undertaking in three distinct stages: storage to desalter, desalter to preflash and preflash to column. The operating temperature of both desalter and preflash can only be varied over a relatively small temperature span. Finally, we see that fouling is an important consideration. At the hot end of the train, this fouling is affected by velocity and by exchanger wall temperature. Consideration of fouling must be incorporated into the design procedure.
SubjectPre-heat Train Design
Polley, G. T.; Yeap, B. L.; Wilson, D. I.; Panjeh Shahi, M. H. (2002). Design of Crude Oil Pre-Heat Trains. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from