Residence time distributions in regions of continuous flow systems
β Scribed by L.G. Gibilaro
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 522 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
β¦ Synopsis
The mean residence time of material m any arbltrarlly defined internal region of a contmuous flow system IS shown to equal the holdup m that regron drvlded by the flow rate through the system as a whole It LS thus Independent of the flow rate through the region itself and the manner m which the rewon connects with the remainder of the system If the region IS well m&xed, the regdon residence time distribution consists of an exponentral term together with an Impulse at time zero
π SIMILAR VOLUMES
Mathematical expressions are derived for the residence time and the distribution of residence times of falling particles in a turbulent flow system. Resume-L'auteur d&duit des expressions mathkmatiques pour le temps de residence et la r&partition du temps de residence de particules tombant dans un s
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
Equations are presented for the residence time distribution in recycle systems with crossmixing between the forward and recycle streams. The use of the method of moments to obtain the system parameters, the crossflow and recycle rates, is described and the implications of the limits of the model are