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HOW TO DEBOTTLENECK EXCHANGERS.

Author(s) : MUKHERJEE R.

Type of article: Article

Summary

THE AUTHOR SUGGESTS A NUMBER OF WAYS IN WHICH IT IS POSSIBLE TO REVAMP HEAT EXCHANGERS IN CHEMICAL AND REFINERY PLANTS RATHER THAN SCRAP AND REPLACE THEM TO ACCOMMODATE INCREASED THROUGHPUTS. SHELL AND TUBE EXCHANGERS MAY OFTEN BE REPIPED FOR PARALLEL RATHER THAN SERIES FLOW GIVING HIGHER MEAN TEMPERATURE DIFFERENCES AND LOWER PRESSURE DROP. AIR-COOLED EXCHANGERS MAY BENEFIT FROM INCREASED AIR FLOW AND CAN BE SUPPLEMENTED BY A TRIM COOLER RATHER THAN REPLACED. AN INTERCHANGE OF FLUID SIDES IN SHELL AND TUBE UNITS, ALLOCATING THE MORE VISCOUS FLUID TO THE SHELL SIDE TO INCREASE TURBULENCE AND HENCE HEAT TRANSFER IS WORTH CONSIDERING. EVEN THE REPLACEMENT OF TUBE BUNDLES, CHANGING BAFFLE PITCH OR USING LOW-FIN TUBES, IS CHEAPER THAN REPLACING THE ENTIRE UNIT. D.W.H.

Details

  • Original title: HOW TO DEBOTTLENECK EXCHANGERS.
  • Record ID : 1989-0778
  • Languages: English
  • Source: Hydrocarbon Processing - vol. 67 - n. 7
  • Publication date: 1988
  • Document available for consultation in the library of the IIR headquarters only.

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