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Residence time distribution in multi‐stage systems with recycle
Author(s) -
Haddad A.,
Wolf D.,
Resnick W.
Publication year - 1964
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450420507
Subject(s) - residence time distribution , residence time (fluid dynamics) , inlet , mixing (physics) , effluent , discontinuity (linguistics) , attenuation , piston (optics) , residence , distribution (mathematics) , environmental science , stage (stratigraphy) , flow (mathematics) , mechanics , computer science , process engineering , environmental engineering , mathematics , engineering , physics , geology , mechanical engineering , mathematical analysis , optics , wavefront , paleontology , geotechnical engineering , demography , quantum mechanics , sociology
Equations are presented for the residence time distribution in multi‐stage systems in which part of the effluent stream is recycled to the inlet of the system. The cases considered include perfect mixing, piston flow and real systems defined by attenuation and time delay factors. Time delay in the recycle stream is also considered. Graphical solutions for several systems are presented. Recycle of part of the effluent stream results in broadening of the residence time distribution and, in addition, produces a discontinuity in the distribution when a time delay is present.