Heterogeneous Catalytic Reaction || ASPEN HYSYS
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- This video is brief tutorial to use Langmuir-Hinshelwood-Hougen-Watson (LHHW) reaction in aspen HYSYS.
@ 00:23 Defining components and fluid package
@ 00:54 Defining reaction
@ 01:12 Introduction to reaction equation and rate expression
@ 02:09 Aspen HYSYS kinetic help
@ 02:34 Input reaction parameters for forward reaction
@ 03:08 Reverse reaction parameters calculation
@ 03:50 Input reaction parameters for reverse reaction
@ 04:12 Input denominator parameters
@ 05:59 Draw reactor flowsheet
@ 06:21 Defining feed stream
@ 06:55 Defining reactor parameters
@ 07:23 Evaluation of results
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Hi great video. Good instructions. The units in the paper are in mol/(kgcats)) not kmol/m3.h . Is there any work-around for this?
Unfortunately not but it should be.
Density of catalyst need to be multipled with rate constant to get the desired unit.
@@Chemiopedia Does that impact the K? Would it still be k/K like in the video?
@@davidleahy22 the pre-exponent of k is 1.17e15 when the reaction rate unit is mol/kg s while HYSYS can have only volumetric rate unit. So we need to multiply 1.17e15 with catalysis density. As the value of pre-exponent change it will also impact the pre-exponent of k/K.
Please how are the (activation energy and pre exponential values) for big K and small k gotten?
Also how can I get the data (activation energy and pre exponential values) for different components involved in my reactions.
great video!!!!!
Hello sir, it is very great video with good explanation. I got little bit confuse about the number that you fill in the row 1 denominator. Can you explain, how did you get that number. Thanks
I would like to know the reference, please let me know where can i get it. TY!
What about catlyist?
Hello, Sir. Can you tell me where to find such adsorption equilibrium constant? Great video btw.
Try to find in research articles.
Can You explay how make the equations without Aspen ? Or, You have a video Tha explain Tha equations yet?
I didn't get your question. Can you rephrase it?
Can you tell me how to get reactor length and diameter ??
Do you have data for carbon monoxide + H2O------- carbon dioxide +H2 ??
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Interesting video! I have one question, how to add catalyst in the reactor
In the reaction tab. There is a table available named Catalyst Data. You can enter the specifications there.
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I thinks you got something wrong the denominator in the reaction rate expression while not to fill in 1 that's the first term in denominator. Thanks for your replies
Number of denominator term is same however, the position of the term is different from the equation present in the slides.
@@Chemiopedia the denominator Omega^2= 1 + K1*p1+...+ K3*p3 but in this video I didn't see the row in denominator of simulation video corresponding to 1
1 will be in dominator in any case. In the kinetics you need to input the values of adsorption coefficients. Click on kinetics help may be it can help
@@Chemiopedia I think you are the one that should check this one out. Denominator in hysys is defined as (1 + K1*P1 + ... + K3*P3)^n. Based on problem you show on your video, R = f(k,K,P)/omega^2, but omega^2 itself is defined as first order f(K,P) function. According to hysys, the value of n should be filled with 1 not 2. Please recheck and thank you for this tutorial. It helps a lot!
Hi Yosua,
That's a good pick of mistake. However, nothing is wrong with the simulation itself. Mistake is in slides. Omega= 1 + K1*p1+...+ K3*p3 and their will be square on both sides.
However, 1 in above comments is not the power "n". He was talking about 1 in the Omega function. (First term in above expression).
Thank you for this video. Can you please tell me how to find capital K for the reaction of CH4 and H2O to produce CO2 and H2?
K value for secondary reforming reaction (CH4 + 2H2O = CO2 + 4H2) is the product of K for reforming reaction (CH4 + H2O = CO + 3H2) and water gas shift reaction (CO + H2O = CO2 + H2). Kindly email me at chemiopedia@gmail.com I will share a paper from where I took the kinetic data. You will find the equation for the other two reactions as well.
And subscribe to the channel and share with you fellows as well.
@@Chemiopedia can I also get the paper? or can you tell me the details?
@@amaypatel276 sure
@@Chemiopedia Hi ! I would also like you to share the paper that you used to simulate the methane steam reforming reaction in hysys in order for me to try it in Aspen Hysys too ! I will send you a email.
@@Chemiopedia hi sir please send me the paper! I really need it. thank you
can you tell me the name of the book from which you have taken the data?
Data is taken from research article.
Hello, thanks for the video. I am doing model validation on several papers with this reaction. But I keep seeing the right trend but too low of a reaction. Do you know what could cause that?
Another question, I noticed many research papers using the same exponential and energy values as this but none with the same k (1.17e15). How did you get the k value?
I'm having the same problem. In the paper Im trying to validate the constant k is 1.02e15 kmol·bar^(1/2)·kgcat^-1·h^-1. Furthermore, I don't know how the HYSYS is considering these units.
How can we proceed when there are two rate equations?
You can add multiple equations in a reaction set.
Actually i need to know how can i proceed the same using Honeywell's unisim software with two rate equations.
I haven't use unisim
How to do the same reaction in aspen plus?
th-cam.com/video/PALwVDqDZ8k/w-d-xo.html
Please watch and don't forget to subscribe
Already subscribed
Thanks
I am not getting convertion in aspen plus, if you have this simulation in aspen plus so let me know.
I also faced the same problem in Aspen Plus. Therefore I used different reaction for the video of Aspen plus.
I got stuck at this kinetic model and am unable to simplify it to the term which aspen accepts. drive.google.com/file/d/1M1Uky5tzQaLE1CSTxC5VAS9qNrQ_AOSR/view.
Can you simplify it or guide me how to put such kinetics in aspen plus
kindly grant access. or share at info@chemiopedia.com
@@Chemiopedia i have mailed it.
Can you give me the paper as I really need it?
sure. Email us: chemiopedia@gmail.com
I will send you now an email to ask For the rate equation please tell me about the temperature range for the rate equation and pressure range and catalyst type?
I have already sent an email to you.
I sent an email to you but I didn:t receive anything
I have received the email.
Will get back to you
Brother can i get your number?