Plug Flow Reactor - Gujarati

Questions posted on ST Forums:

• I getting error in DWSIM V8.8.1 i am attaching the drive link

  https://drive.google.com/file/d/1MGK1Or8fxiujRgqDPNqt_awCirVLCWZM/view?usp=sharing

  05-06M 20-30S krshashi2024
  
  
  Answer last updated on: May 2, 2025, 6 p.m.

  ---

• I getting error in DWSIM V8.8.1 i am attaching the drive link

  https://drive.google.com/file/d/1MGK1Or8fxiujRgqDPNqt_awCirVLCWZM/view?usp=sharing

  05-06M 20-30S krshashi2024
  
  
  Answer last updated on: May 2, 2025, 6 p.m.

  ---

• Error in PFR

  When we are simulate the PFR, the isothermic calculation is not calculated and when click on the solve button this gives error in simulating the PFR.

  09-10M 50-60S Bharkhada_Priyesh
  
  
  Answer last updated on: May 24, 2024, 4:04 p.m.

  ---

• error PFR

  sir,          I put every value as per instruction but still there is error showing. the file link:-https://drive.google.com/file/d/16Ph3BOIENzjA3aBr17sjCjUiXfqaJ6K0/view?usp=drive_link

  03-04M 10-20S mahir1
  
  
  Answer last updated on: April 6, 2024, 11:27 a.m.

  ---

• Plug flow reactor

  Not getting conversion rates as per tutorial, my getting 0.02 and 0.06 for nitrogen and hydrogen resp. Tried changing units of velocity, still answer remains same. pl help

  10-11M 30-40S Bhavya12
  
  
  Answer last updated on: Jan. 1, 2023, 5:28 p.m.

  ---

• Conversion getting low

  even though following all the steps I am getting conversion low, NITROGEN = 0.0193 and HYDROGEN = 0.058.Please tell me where I did mistake, I am using DWSIM version 6.6Below I attached the file of nitrogen and hydrogen in PFD.https://drive.google.com/file/d/1Ge6rEbGm9jEZv88cRkONVA4Dc3E4aRqr/view?usp=sharing

  03-04M 0-10S Abhi@08
  
  
  Answer last updated on: Nov. 9, 2021, 12:17 p.m.

  ---

• Assignment query

  sir, i have followed all the steps as it is in the tutorial but conversion of N getting +200 and H getting +300.

  13-14M 0-10S Abhi@08
  
  
  Answer last updated on: Nov. 9, 2021, 12:16 p.m.

  ---

• Showing error PFR 01-Phase equilibria calculation error

  I am trying to simulate Dibenzyl toluene -Hydrogen reaction in the DWSim using PFR, when the reactor is kept at isothermal conditions , it calculates and does not show any error and when the reactor is switch through adiabatic , it shows the following error such as PFR 01-Phase equilibria calculation error

  06-07M 30-40S nihal1050@gmail.com
  
  
  Answer last updated on: March 15, 2021, 11:05 a.m.

  ---

• Plug flow reactor

  in results section there's no conversion appearing after solving the flowsheet

  10-11M 40-50S alphapal7588@gmail.com
  
  
  Answer last updated on: Feb. 19, 2021, 1:05 p.m.

  ---

• Regarding Plug Flow Reactor

  How to decide the the minimum and maximum temperature since the stream temperature is 425 degrees celcius? Is it an assumption or a particular standard to be followed in such case?

  07-08M 30-40S Abhijithaldankar
  
  
  Answer last updated on: Feb. 19, 2021, 11:50 a.m.

  ---

• Getting different results than what is given in the tutorial

  In the tutorial, the conversion of Nitrogen is 17.91% and conversion of Hydrogen is 53.73%.While simulating, I am getting the conversion of Nitrogen as 0.02 and conversion of Hydrogen to be 0.06.

  10-11M 20-30S ankitkumar.chemengg
  
  
  Answer last updated on: Feb. 19, 2021, 9:20 a.m.

  ---

• flash algorithm not appering dwsim

  the flash algorithm, not appearing dwsimthe flash algorithm property not appearing on dwsim while starting a new steady-state simulation window.

  01-02M 30-40S Mukesh_Kanna
  
  
  Answer last updated on: Sept. 25, 2020, 11 a.m.

  ---

• flash algorithm not appering dwsim

  the flash algorithm property not appearing on dwsim while starting a new steady-state simulation window.

  00-01M 0-10S Mukesh_Kanna
  
  
  Answer last updated on: Sept. 17, 2020, 6:41 p.m.

  ---

• Result of the tutorial does not match with mine

  For Nitrogen, the conversion is 17.91% and for Hydrogen, it is 53.73%.On my interface it is 19.5965% and 58.7896% respectively. I am using DWSIM Version 6.1 Update 1.

  10-11M 20-30S kaushikdatta
  
  
  Answer last updated on: Aug. 28, 2020, 4:29 p.m.

  ---

• Cannot locate New Steady-state Simulation under File Menu in DWSIM Version 6.1 Update 1

  I am unable to find "New Steady-state simulation" option under File Menu as displayed in the tutorial. I am using DWSIM Version 6.1 Update 1.

  01-02M 30-40S priyamnayak
  
  
  Answer last updated on: Aug. 28, 2020, 2:13 p.m.

  ---

• Cannot locate "Unit Operations" to drag and drop Plug Flow Reactor in DWSIM Version 6.1 Update 1

  I cannot find the Unit Operations tab from where I can drag and drop Plug Flow Reactor. I am using DWSIM Version 6.1 Update 1.

  08-09M 0-10S priyamnayak
  
  
  Answer last updated on: Aug. 28, 2020, 12:22 a.m.

  ---

• Which option to select between Arrehenius and User-Defined to enter A=0.004 in DWSIM Version 6.1 Update 1

  In the Direct Reaction, there are two options as Arrehenius and User-Defined. For which should A=0.004 be entered? I am using DWSIM Version 6.1 Update 1

  07-08M 40-50S priyamnayak
  
  
  Answer last updated on: Aug. 28, 2020, 12:12 a.m.

  ---

• Cannot find the Green Tick button for Accept Changes in DWSIM Version 6.1 Update 1

  I am unable to find any green tick button to Accept changes.I am using DWSIM Version 6.1 Update 1.

  04-05M 30-40S priyamnayak
  
  
  Answer last updated on: Aug. 27, 2020, 11:52 p.m.

  ---

• Cannot find Composition option to enter the Basis as Mole Fraction in DWSIM Version 6.1 Update 1

  I am unable to locate the Composition option to enter the Basis as Mole Fraction.I am using DWSIM Version 6.1 Update 1.

  03-04M 50-60S priyamnayak
  
  
  Answer last updated on: Aug. 27, 2020, 11:46 p.m.

  ---

• Cannot locate the Object Palette window on thw right hand side of the main simulation window in DWSIM Version 6.1 Update 1

  I am unable to locate the Object Palette window on the right-hand side of the main simulation window. I am using DWSIM Version 6.1 Update 1.

  02-03M 50-60S priyamnayak
  
  
  Answer last updated on: Aug. 27, 2020, 11:35 p.m.

  ---

• Assignment Query

  I wish to know in the assignment problem, how we decide DO values for individual reactants (I took DO=1 for Ethylene Glycol and zero for others- please let me know it is decided). Also I wish to know how to decide Tmin and Tmax values (When I took Tmin= 300K as I read that 333K is the desired temp, I got 100+ values of Conversions ).Also, the type of reactor was not specified (Adiabatic or Isothermal). Has these things omitted for us to research about them through papers?

  13-14M 50-60S himanshu08
  
  
  Answer last updated on: July 17, 2020, 1:34 p.m.

  ---

• PFR Assignment

  Please tell us what are the chemical reaction kinetics specifications we need to put in the settings menu? after giving some appropriate specifications on researching , the flow sheet is giving pressure drop error inside PFR! Please help? Thanks, with regards. 

  12-13M 20-30S 9shubh_1729
  
  
  Answer last updated on: May 6, 2020, 3:58 p.m.

  ---

• Simulation Configuration Wizard window

  After starting simulation configuration Wizard window, it doesnot show flash algoritham.I have downloaded 5.8 version is it requires 4.3 kindly guide

  02-03M 10-20S yadavsdjnec@gmail.com
  
  
  Answer last updated on: May 3, 2020, 9:29 p.m.

  ---

• The Pressure drop inside the PFR is too high

  I am getting an error message as ' The pressure drop inside the PFR is too high. Check input data like volume, diameter and catalyst loading, if applicable. Can you pl help on this error?Thank you in advance.

  11-12M 30-40S shilpa.kodolikar@mitpune.edu.in
  
  
  Answer last updated on: April 29, 2020, 6:13 p.m.

  ---

• I can't find the "REACTIONS MANAGER" under Tools toolbar

  Hi,I can't find the "REACTIONS MANAGER" under Tools \r\ntoolbar. Is it because my DWSIM version is not enough to simulate such \r\nreactions?Many thanks.ISIK

  00-01M 0-10S ISIK
  
  
  Answer last updated on: May 9, 2019, 4:04 p.m.

  ---

• Plug Flow reactor

  We are given the value of k, but you put it on the space for value of A, the frequency factor. Where do we put the value of k? Also where do we put the units of k, as in the assignment the units of k = 1/seconds and on the tutorial k was unit-less. You also left velocity units empty.l assume velocity unit = reaction rate units and amount unit = molar concentration units. Your help will be much appreciated. Thanks 

  07-08M 50-60S thubelihle
  
  
  Answer last updated on: May 9, 2019, 3:05 p.m.

  ---

• Phase equilibria error

  I was trying to simulate a PFR for the production of aniline from nitrobenzene. I got an error message that states "PFR-010-Phase equilibria calculation error".Do you have any suggestions how I can go about fixing it?. I tried changing the PFR parameters but it still doesnt work.Thanking you in advance

  12-13M 40-50S mbali20
  
  
  Answer last updated on: Nov. 24, 2017, 10:14 a.m.

  ---