Reconstruction of a heat exchanger network under industrial constraints — the case of a crude distillation unit

Mariusz Markowski


Heat exchanger network retrofit using a pinch based approach is presented. In this approach, the criterion of minimum sensitivity of heat exchanger to fouling effects is accounted for. The present paper introduces this criterion without explaining its details that are described in the literature. A summary is given of HEN reconstruction in a crude distillation unit processing 4.2 million ton crude oil per year. While the total heat quantity of hot streams is 110 MW, the heat recovery in the existing HEN is 60 MW. Using Pinch Analysis, the target value of heat recovery at ΔTmin=10 K was determined at 91 MW. Measurements were carried out on the existing HEN with the aim to determine the influence of fouling effects on the heat transfer in the exchangers. Taking local constraints including fouling into account, HEN reconstruction was proposed. The heat savings in the reconstructed HEN was estimated at 75 MW.
Author Mariusz Markowski (FCEMP / IMEn)
Mariusz Markowski,,
- Institute of Mechanical Engineering
Journal seriesApplied Thermal Engineering, ISSN 1359-4311
Issue year2000
Keywords in EnglishComposite curve, Grand composite curve, Pinch point, Pinch technology
ASJC Classification2209 Industrial and Manufacturing Engineering; 2102 Energy Engineering and Power Technology
Score (nominal)35
Score sourcejournalList
Publication indicators Scopus Citations = 18; WoS Citations = 17; GS Citations = 14.0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 1.033; WoS Impact Factor: 2006 = 0.814 (2) - 2007=1.175 (5)
Citation count*14 (2015-03-29)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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