Solve only 3, 8, 9, 10

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Solve only 3, 8, 9, 10

Solve Only 3 8 9 10 1 (122.6 KiB) Viewed 8 times

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P16-2B (a) Suggest a diagnosis (e.g., bypassing, dead volume, multiple mixing zones, internal circulation) for each of the following real reactors in Figure P16-2b (a) (1 through 7 curves) that had the following RTD [E(t), E(0), F(t), F(0) or (1-F(0))] curves: 1.0 In 1.0 F(0) E(0) E(0) 1-F(0) 0.5 1.0 1.0 6 0 6 0 1.0 (4) (1) (2) (3) :بيات خبر " " - Area = A, A2 0) 0) E() F(0) i 0 g 0 0 (5) (6) (7) (8) F(t) - F(t t t 0 (9) (10) Figure P16-2b (a) RTD curves.
** ELO) a Here, a peak at 0=0 indicates bypass and the MFR has also dead volume, soolte ho as the cluve o onot bo- a at a distance from the orign. pipe effects are also dominant here, so there is a lag. -Area sa Lemp-vert vorhan e The The above can be modelled below Ub V 2 va Vmo Vp А, 6) 1 Elo) tro VA Vptum Mean of va Shaded portions ha Overall Up tum mean tops V Multiple decaying peeks here, at regular intervals indicate there is strong recirculation. +
The above can be modelled as Vpi Elo7 Vph 6) 3 A (2 There might be some dead Space Vpi 110 At verp (R+1) + Ro f the It suggests that there is slow internal circulabien, ie, sluggish kinetics There is a lag because of tulnlar flow effect in pipe also Dead volume might ar might not be present depending on the position of overall mean. can be modelled as 02 above b- kr Arab Rue vo دلایا | * Total area=1 VA VA 0- blev han overall Up tym Foss
Anonymous answered this 36 answers Was this answer helpful? 0 5 A) 1) RTD in this case resembles the RTD of a perfectly operating plug flow reactor with time constant = 0.5T t A=- (here graph is plotted in dimenisionaless quantites called normalized RTD functions and T) 1.01 F(t) I VO V VO 2) here the RTD of the given reactor resembles that of a plug flow reactor with channelling(or bypassing) T and A= with reactor time constant = Ext) SBI Ve V 4) this RTD resembles the RTD of a cstr and pfr in series. 5)this RTD resembles the RTD of a cstr and pfr in series with channelling or bypassing (early peak represents bypassing) and dead zone (the curve is passing asymptotic to x axis, this indicates dead volume) 6) RTD here indicates of multiple mixing zones