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Limiting forms of the residence time distribution for recycle system.

โœ Scribed by B. Nauman; B.A. Buffham

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
309 KB
Volume
32
Category
Article
ISSN
0009-2509

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โœฆ Synopsis

The widely held supposition that the residence tnne dlstrlbutlon of a recycle system always approaches that of an Ideal mixer in the limit of htgh recycle rates has been disproved

Physically plausible systems exist whtch vlolate both sufficiency condtttons of Buffham and Nauman [l] Limiting distrlbutlons other than exponential are possible, and recycle systems can be devised which have no hmltmg dlstnbutlon Necessary and sufficient condltlons for a hmlt to exist and for this lnnit to be exponential are derived

๐Ÿ“œ SIMILAR VOLUMES

On the limiting form of the residence-ti
On the limiting form of the residence-time distribution for a constant-volume recycle system
โœ B.A. Buffham; E.B. Nauman ๐Ÿ“‚ Article ๐Ÿ“… 1975 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 512 KB

The residence-time density function for a recycle system usually tends to exponential form, with mean equal to the ratio of the volume to the volumetric flow-rate, when the recycle rate is increased at constant throughput. Two conditions each suffidient to guarantee this behaviour are: (i) that the

The limiting residence time distribution
The limiting residence time distribution of continuous recycle systems
โœ Michael Rubinovitch; Uzi Mann ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 862 KB

The hmltmg residence hme dlstrlbuhon (RTD) of contmuous recycle systems as the recycle ratlo approaches mlimty IS consldered It IS shown that the RTD converges to the exponential dtstrlbutlon whenever the system does not consist of a "dead volume" at the hnut Thus hmltmg behavior IS independent of t

Residence-time distributions at high rec
Residence-time distributions at high recycle ratios: Limiting forms obtained by increasing the recycle and by reducing the throughput
โœ B.A. Buffham; E.B. Nauman ๐Ÿ“‚ Article ๐Ÿ“… 1984 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 769 KB

## Abatrac-The residence-time density function for a recycle system tends to a limit as greater recycle ratios are considered for a fixed flow rate through the system. Similarly, the density function for normalized residence times tends to a Limit as smaller flow rates through the system are consi