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Single stage and double absorption heat transformers used to recover energy in a distillation column of butane and pentane
Author(s) -
Rivera W.,
Cerezo J.,
Rivero R.,
Cervantes J.,
Best R.
Publication year - 2003
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.943
Subject(s) - reboiler , pentane , fractionating column , butane , transformer , distillation , refinery , nuclear engineering , chemistry , fortran , thermodynamics , process engineering , mechanical engineering , engineering , electrical engineering , computer science , organic chemistry , voltage , physics , operating system , catalysis
This paper presents the theoretical analysis of the use of single stage and double absorption heat transformers operating with the water–lithium bromide mixture coupled to a butane and pentane distillation column in a Mexican refinery. A mathematical model of the heat transformers was developed in FORTRAN and integrated as a user model to the Aspen Plus simulation code. Both components coupled to the column were modelled on steady‐state conditions. The results show that it is theoretically possible to reduce the energy consumed in the reboiler between 26 and 43% by the use of single stage heat transformer at specific conditions, and between 28 and 33% with double absorption heat transformers for a wide range of operating conditions. Copyright © 2003 John Wiley & Sons, Ltd.