Answer / saptarshi

PFR and MFR are basically continuous type reactors while
the batch reactor as its name suggests, is non continuous
type of reactor. however a MFR can be both batch or
continuous.
in a PFR composition varies along the length of the reactor
whereas in a MFR composition of the reactant mixture is
uniform throughout the reactor and same as that in the exit
line. MFRs usually are equipped with an agitating device
(stirrer, agitator) for mixing the reactants but in case of
PFRs mixing takes place pependicular to the direction of
flow of reactants and they do not have any agitating device
as such.

Answer / rajesh kumar bhagat

PFR- plug flow reactor is one where latrel mixing is allowed
but longitudnal mixing that is along the length not allowed.
composition changes along the length.
MFR- mixed flow reactor, composition throughout the reactor
will be same and all calculation will be done on output
composition.
Batch reactor- reactant will placed in reactor and let them
react and after some time or after completion of reaction take
it out.

Answer / v

PLUG FLOW REACTOR and MIXED FLOW REACTOR are basically
continuous type reactors while
the batch reactor as its name suggests, is non continuous
type of reactor. however a MFR can be both batch or
continuous.
in a PFR composition varies along the length of the reactor
whereas in a MFR composition of the reactant mixture is
uniform throughout the reactor and same as that in the exit
line. MFRs usually are equipped with an agitating device
(stirrer, agitator) for mixing the reactants but in case of
PFRs mixing takes place pependicular to the direction of
flow of reactants and they do not have any agitating device
as such.

Answer / praveen

Also in addition to those, in a MFR the concentration of the
reactant drops to a low value at a time whereas for PFR the
concentration of the reactant decreases progressively (i.e
stepwise)and higher conversions can be obtained than MFR for
a given reaction.

Answer / sapna

pfr,mfr are bassically continuous reactor&batch reactor are
non-continuous reactor.

Answer / saeed virk

in pfr the composition will change within the passage of time ,almost when feed is directed to the reactor length.it means composition is not same at inlet and out lat of the reactor.reactor. Cstr is totally vice virsa of this.

Answer / vasista

but u will get same performance equations for batch and pfr why?
and batch reactors will have mean residence time and plug flow reactor has residence time why?

Answer / ravishankarraju

Pfr is continuos reactor wher the flow is plug flow wher there will concentration change along the length of the flow and in mfr there will be mixing all over the reactor which is similar to batch reactor but mfri in mfr the concentration drops suddenly

Answer / hemanth

pfr and cstr are continuos reactors and batch opreate sin
batch mode

X is a solid having a white colour at room temperature. It has a density about 2g/cc. Although it has melting point near 325 degree Celsius, its properties start degrading above 260 degree Celsius. The coefficient of friction is very low about 0.1. It has very good dielectric properties especially at higher radio frequencies. It has a very high bulk resistivity. It is chemically inert. It is also resistant to van der Waals force. It is hydrophobic as well as lipophobic. Creep or ‘Cold Flow’ has been observed in X.

0 Answers   Ford,

hi.i m student of chemical engg. and studying in 5 th sem.how can i improve my technical knowledge..can u sugest me a link like book or any website..?

3 Answers  

ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.2 : (a) In the pricing of a coupon bond, the formula is : P = c / (1 + r) + (c + B) / [ (1 + r) (1 + r) ] for 2 years to maturity, where c = annual coupon payment (in dollars, not a percent), B = par value, P = purchase price. Five years ago someone bought a 20 year coupon bond and would like to get rid of it now : A coupon rate of 7 %, it matures in exactly 2 years, par value is $1000, current interest rate is 5 %. (i) Find the value of c. (ii) Find the value of r or interest rate. (iii) Find the value of P. (iv) Guess the formula for P when the maturity period is 3 years, if such formula for 1 year duration is P = (c + B) / (1 + r). (b) In lemma of Ito on a Forward, recall that a forward contract is priced at : ln F = ln S + rT. Find the value of F in 5 decimal points when S = $100, r = interest rate = 0.05 / year, T = duration = 1 year.

1 Answers  

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0 Answers  

Please tell me what type of questions will be asked in a petrochemical company

2 Answers  

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0 Answers  

Explain some good strategies for curing tube vibration in shell and tube exchangers?

0 Answers  

QUANTUM BIOLOGY - EXAMPLE 33.5 : (a) In the measurement of the number of photons received by a plant during photosynthesis, quantum meter is used. At 8 AM, 11 AM, 12 PM, 2 PM and 4 PM of the same day, the measured readings of the meter are 10, 70, 60, 120 and 120 units. Find the mode, median and min of the readings of the quantum meter. (b) Microtubule is used to carry information in a cell. If the cross-sectional area of the microtubule has a diameter of 25 nanometers, find the volume of the microtubule of 1 nanometer in height. State the assumption of calculation.

1 Answers  

What is some common piping materials used to transport slurries?

0 Answers  

Any idea on recombinant protein expression?

0 Answers  

why distillation of water takes more time than toluene ,eventhough the later boiling point is more than water ?

3 Answers  

can any one tell me that how shoul i prepere for entrance exams of psu i mean from which book i have to gone through?

3 Answers   BPCL Bharat Petroleum, GACL, GATE, IOCL,