P1-6_(B)

The reaction\

A->B

\ is to be carried out isothermally in a continuous-flow reactor. The entering volumetric flow rate

v_(0)

is

10d(m^(3))/()

h. Note:

F_(A)=C_(A)

U. For a constant volumetric flow rate

v=v_(0)

, then

F_(A)=C_(A)v_(0)

. Also,

C_(A0)=(F_(A0))/(v_(0))=((5(mol)/(h))/(10d(m^(3))/(h)))0.5mo(l)/(d)m^(3)

.\ Calculate both the CSTR and PFR volumes necessary to consume

99%

of A (i.e.,

C_(A)=0.01C_(A0)

) when the entering molar flow rate is

5mo(l)/(h)

, assuming the reaction rate

-r_(A)

is\ a.

-r_(A)=k

with Ans.:V

CSTR=99dm^(3)

]\ b.

-r_(A)=k_(CA)

with

0.0001s^(-1)

\ c.

-r_(A)=kC_(A)^(2)

with Ans.:

V_(CSTR)=660dm^(3)

]\ d. Repeat (a), (b), and/or (c) to calculate the time necessary to consume

99.9%

of species A in a

1000dm^(3)

constant-volume batch reactor with

C_(A0)=0.5mo(l)/(d)m^(3)

.

- P16B The reaction AB is to be carried out isothermally in a continuous-flow reactor. The entering volumetric flow rate v0 is 10dm3/h. Note: FA=CAU. For a constant volumetric flow rate v=v0, then FA=CAv0. Also, CA0=FA0/v0=([5mol/h]/[10dm3/h])0.5mol/dm3. Calculate both the CSTR and PFR volumes necessary to consume 99% of A (i.e., CA=0.01CA0 ) when the entering molar flow rate is 5mol/h, assuming the reaction rate rA is a. rA=k with k=0.05hdm3mol[ Ans.: VCSTR=99dm3 ] b. rA=kCA with 0.0001s1 c. rA=kCA2 with k=300molhdm3[ Ans.: VCSTR=660dm3] d. Repeat (a), (b), and/or (c) to calculate the time necessary to consume 99.9% of species A in a 1000dm3 constant-volume batch reactor with CA0=0.5mol/dm3. - P16B The reaction AB is to be carried out isothermally in a continuous-flow reactor. The entering volumetric flow rate v0 is 10dm3/h. Note: FA=CAU. For a constant volumetric flow rate v=v0, then FA=CAv0. Also, CA0=FA0/v0=([5mol/h]/[10dm3/h])0.5mol/dm3. Calculate both the CSTR and PFR volumes necessary to consume 99% of A (i.e., CA=0.01CA0 ) when the entering molar flow rate is 5mol/h, assuming the reaction rate rA is a. rA=k with k=0.05hdm3mol[ Ans.: VCSTR=99dm3 ] b. rA=kCA with 0.0001s1 c. rA=kCA2 with k=300molhdm3[ Ans.: VCSTR=660dm3] d. Repeat (a), (b), and/or (c) to calculate the time necessary to consume 99.9% of species A in a 1000dm3 constant-volume batch reactor with CA0=0.5mol/dm3