Analyze the Catalytic Methanol Production Process


One process for the production of methanol is the catalytic reaction of carbon dioxide and hydrogen.  The chemical reaction is given by:

CO2 + 3H2 → CH3OH + H2O

The diagram for the process is shown in Figure 2.  It is desired to produce 1.00 × 10mol/hr of methanol.  The single pass conversion of the reactor is 10.% while the overall conversion is 80.% (both in terms of hydrogen).  Note, carbon dioxide in the fresh feed is in 20.% excess and all of the product (methanol) and byproduct (water) is removed in the condenser.

a) Why is the recycle stream included in the design?
b) What is the purpose of the purge stream?  In other words, why would this design not work without the purge stream?
c) Determine the flow rate and composition of the feed stream (F).
d) Determine the flow rate and composition of the purge stream (P).
e) What percentage of the flow leaving the condenser enters the purge stream?
f) Determine the recycle ratio (R/F).


The question belongs to Chemical Engineering and it is about the hydrogenation process of carbon dioxide for methanol synthesis. Various questions about this process have been answered in the solution in detail.

Note: The solution is in handwritten format


Download Full Solution


  • HWA

    this is a very good website

  • HWA

    I have 50 questions for the same test your page is showing only 28

  • HWA

    hi can you please help or guide me to answer my assignments. thanks

  • HWA

    hi can anyone help or guide me to my assignments. thanks

  • HWA

  • HWA

    This solution is perfect ...thanks

  • HWA

    Hello Allison,I love the 2nd image that you did! I also, had never heard of SumoPaint, is something that I will have to exolpre a bit! I understand completely the 52 (or so) youtube videos that you probably watched. Sometimes they have what you want, sometimes they don't! However, it is always satisfying when you are able to produce something that you have taught yourself. Great job!Debra 0 likes

  • HWA

    Perfect bank of solution. 

  • HWA

    great !

  • HWA
    Paul Brandon-Fritzius

    thanks for the quick response. the solution looks good. :)

  • HWA
    tina Johnson

    thnx for the answer. it was perfect. just the way i wanted it. 

  • HWA

    works fine.