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Emerging Heat Exchanger Technologies for the Mitigation of Fouling in Crude Oil Pre-Heat Trains
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Over the last three years ESDU have been working with engineers from oil companies and the companies that serve them in order to produce a guide describing the current state of knowledge on fouling in pre-heat trains and ways in which it can be mitigated. One result has been the identification and description of heat exchanger technologies that experience has shown to have a role to play in reducing fouling. This paper describes these developments. As shown elsewhere, the rate at which pre-heat train exchangers foul is controlled by fluid velocity and by wall temperature. Technologies which promote the heat transfer on the crude oil side of an exchanger are therefore favoured. (Note: promotion of the heat transfer on the hot side of the unit is not generally favoured, for this is likely to raise the wall temperature on the crude side). The working party identified three exchanger technologies that made use of this principle: • helical baffles • twisted tubes • tube inserts. These technologies will be discussed in turn.
Polley, G. T.; Pugh, S. J.; King, D. C. (2002). Emerging Heat Exchanger Technologies for the Mitigation of Fouling in Crude Oil Pre-Heat Trains. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from