The ireversible gas-phase nonelementary reaction A+ 2B C is to be carried out isothermally in...

   

Transcribed Image Text:

The ireversible gas-phase nonelementary reaction A+ 2B → C is to be carried out isothermally in a constant-pressure batch reactor. The feed is at a temperature of 227°C, a pressure of 1013 kPa, and its composition is 33.3% A and 66.7% B. Laboratory data taken under identical conditions are as follows (note that at X = 0, -rA 0.00001): -ra (mol/dm -s) x 10 0.010 0.005 0.002 0.001 0.0 0.2 0.4 0.6 (a) Estimate the volume of a plug-flow reactor required to achieve 30% conversion of A for an entering volumetric flow rate of 2 m/min. (b) Estimate the volume of a CSTR required to take the effluent from the plug-flow reactor (PFR) above and achieve 50% total conversion (based on species A fed to the PFR). (c) What is the total volume of the two reactors? (d) What is the volume of a single plug-flow reactor necessary to achieve 60% conversion? 80% conversion? (e) What is the volume of a single CSTR necessary to achieve 50% con- version? (f) What is the volume of a second CSTR necessary to raise the conver- sion from 50% to 60%? (g) Plot the rate of reaction and conversion as a function of PFR vol- ume. (h) Give a critique of the answers to this problem. The ireversible gas-phase nonelementary reaction A+ 2B → C is to be carried out isothermally in a constant-pressure batch reactor. The feed is at a temperature of 227°C, a pressure of 1013 kPa, and its composition is 33.3% A and 66.7% B. Laboratory data taken under identical conditions are as follows (note that at X = 0, -rA 0.00001): -ra (mol/dm -s) x 10 0.010 0.005 0.002 0.001 0.0 0.2 0.4 0.6 (a) Estimate the volume of a plug-flow reactor required to achieve 30% conversion of A for an entering volumetric flow rate of 2 m/min. (b) Estimate the volume of a CSTR required to take the effluent from the plug-flow reactor (PFR) above and achieve 50% total conversion (based on species A fed to the PFR). (c) What is the total volume of the two reactors? (d) What is the volume of a single plug-flow reactor necessary to achieve 60% conversion? 80% conversion? (e) What is the volume of a single CSTR necessary to achieve 50% con- version? (f) What is the volume of a second CSTR necessary to raise the conver- sion from 50% to 60%? (g) Plot the rate of reaction and conversion as a function of PFR vol- ume. (h) Give a critique of the answers to this problem. The ireversible gas-phase nonelementary reaction A+ 2B → C is to be carried out isothermally in a constant-pressure batch reactor. The feed is at a temperature of 227°C, a pressure of 1013 kPa, and its composition is 33.3% A and 66.7% B. Laboratory data taken under identical conditions are as follows (note that at X = 0, -rA 0.00001): -ra (mol/dm -s) x 10 0.010 0.005 0.002 0.001 0.0 0.2 0.4 0.6 (a) Estimate the volume of a plug-flow reactor required to achieve 30% conversion of A for an entering volumetric flow rate of 2 m/min. (b) Estimate the volume of a CSTR required to take the effluent from the plug-flow reactor (PFR) above and achieve 50% total conversion (based on species A fed to the PFR). (c) What is the total volume of the two reactors? (d) What is the volume of a single plug-flow reactor necessary to achieve 60% conversion? 80% conversion? (e) What is the volume of a single CSTR necessary to achieve 50% con- version? (f) What is the volume of a second CSTR necessary to raise the conver- sion from 50% to 60%? (g) Plot the rate of reaction and conversion as a function of PFR vol- ume. (h) Give a critique of the answers to this problem. The ireversible gas-phase nonelementary reaction A+ 2B → C is to be carried out isothermally in a constant-pressure batch reactor. The feed is at a temperature of 227°C, a pressure of 1013 kPa, and its composition is 33.3% A and 66.7% B. Laboratory data taken under identical conditions are as follows (note that at X = 0, -rA 0.00001): -ra (mol/dm -s) x 10 0.010 0.005 0.002 0.001 0.0 0.2 0.4 0.6 (a) Estimate the volume of a plug-flow reactor required to achieve 30% conversion of A for an entering volumetric flow rate of 2 m/min. (b) Estimate the volume of a CSTR required to take the effluent from the plug-flow reactor (PFR) above and achieve 50% total conversion (based on species A fed to the PFR). (c) What is the total volume of the two reactors? (d) What is the volume of a single plug-flow reactor necessary to achieve 60% conversion? 80% conversion? (e) What is the volume of a single CSTR necessary to achieve 50% con- version? (f) What is the volume of a second CSTR necessary to raise the conver- sion from 50% to 60%? (g) Plot the rate of reaction and conversion as a function of PFR vol- ume. (h) Give a critique of the answers to this problem.

Answer rating: 100% (QA)

The following Assumptions are using The temperature and pressure are constant during the process The ... View the full answer