Continuous Stirred Tank Reactor (CSTR) : Flow rate and Reactor Volume

The liquid phase reactions
a. A+B--->C
b. A+B--->D
are carried out in a perfectly insulated CSTR. The desired reaction (a) is first order in A and zero order in B, while the undesired reaction (b) is zero order in A and first order in B. The feed rate is equimolar in A and B. Species A enters the reactor at a temperature of 100 deg C and species B enters at a temperature of 50 deg C. The operating temperature of the reactor is 400 K. The molar flow rate of A entering the reactor is
60 mol/min: CpA=20cal/(mol K), CpB=30cal/(mol K), CpD=50cal/(mol K), and
CpU=40cal/(mol K). CA0=0.01 M

for a: delta Hrxn = -3000 cal/mol of A at 300K
Ka= 1000e^-2000/T min^-1 where T is in K
For b: delta Hrxn = -5000 cal/mol of A at 300 K
Kb= 2000e^-3000/T Min^-1

1. What will be the exiting molar flow rate of C and D from the reactors?
2. What is the CSTR reactor volume for the conditions specified?

Solution Summary

Flow rate and reactor volume for a Continuous Stirred Tank Reactor (CSTR) are calculated.

Liquid phase reaction reversible:
A + B = R + S
k1 = 7l/mol*min
k2 = 3l/mol*min
It occurs in a continuousstirredtankreactor of 120liters. 2 streams, one with 2.8 mol of A/liter and the other 1.6 mol of B/liter, feed the reactor with the same volumetric flow. The goal is to have a 75% conversion of the limitant react

Please see the attached file for the fully formatted problem(s).
1. Calculate the volume of a CSTR and of a PFR needed to convert 10 L/min of a 2.0 M solution of A to a concentration of 0.1 M. The reaction is A --> B, the rate law is -r = k CA, where k is 0.01667 sec-1. Which is larger? Why?
2. For the reaction given in p

A lagoon is to be designed to accommodate an input flow of 0.10 m^3/s of nonconservative pollutant with concentration 30.0mg/L and reaction rate 0.20/day. The effluent from the lagoon must have pollutant concentration of less than 10.0mg/L. Assuming complete mixing, how large must the lagoon be?

Please see the attached file for the fully formatted problem(s).
Problem:
From the following data find a satisfactory rate equation for the gas-phase decomposition of pure A, A ---> R + S, in a mixed flowreactor.
Tau based on
Inlet feed conditions, sec 0.423 5.1 13.5 44.0 192
XA (for CAo = 0.002 mol/lit) 0.22 0.

Please see the attached file for the fully formatted problem(s).
An elementary liquid phase reaction (irreversible first order) A ---> R, takes place in a PFR and the conversion is 96%. If a mixed flowreactor of 10 times as large as the PFR is hooked up in parallel with the existing unit, by what fraction could the productio

Two tanks each hold 3 liters of salt water and are connected by two pipes (see figure below) the salt water in each tank is kept well stirred. Pure water flows into tank A at a rate of 5 liters per minute and the salt mixture exits tank B at the same rate.
Salt water flows from tank A to tank B at the rate of 9 liters per min

Please see the attached file for the fully formatted problem(s).
Acetic acid is hydrolyzed in three stirredtankreactors operated in series. The feed flows to the first reactor (V = 1 lit) at a rate of 400 cm3/min. The second and third reactors have volumes of 2 and 1.5 liters respectively. The first order irreversible rate

A lake with constant volume 10X10^6 m^3 is fed by a pollution-free stream with flowrate 50 m^3/s. A factory dumps 5m^3/s of a nonconservative waste with concentration 100 mg/L into the lake. The pollution has a reaction rate coefficient K of 0.25/day. Assuming the pollution is well mixed in the lake, find the steady-state conce

A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at a rate of 100m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming completely mixed conditions,
a) what would be the concentration of pollutant i