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Good explanation, one correction though, the slurry doesn’t “mix” with the feed. It exchanges heat with the feed in a heat exchanger. The slurry preheats the feed while it gets cooled down and is pumped around back into the column as a “quench”
it is used in a heat exchanger as u said but it is also used as a recycle to the riser as well to recover some of the entrain catalyst from the main column
Good lesson! One correction though…you will never find an FCC Regenerator operating at 1200 degC, that’s way too hot! Typical max temperatures for an FCC regenerator are in the 750 degC range.
Excellent teaching dada..please make videos on important and common questions for chemical engineering interviews..also guide us how we can start our professional career in core industries...pls
Thank You so much. My concepts are cleared after watching your video but can you please help me in solving the below-mentined question based on FCC. Given Data:- • Catalytic cracking yields - charts 15-18 in Section 5 of Handouts. • Liquid densities for C3 and C4’s in GPSA Engineering Data Book - Physical Properties GPSA-2 • Gas oil feed to FCC unit: 80,000 BPSD, 23 API. • FCC Conversion: 70 vol %. Calculate: 1. Total Feed, kg/hr 2. Fuel gas (C2 and lighter) production, kg/hr 3. a) C3 (Propane) and b) C3= (propylene), BPSD and kg/hr 4. C4= (Butylene or 1-Butene), BPSD and kg/hr 5. i-C4 (Isobutane), BPSD and kg/hr 6. n-C4 (n-Butane), BPSD and kg/hr 7. C5+ Gasoline, BPSD and kg/hr (Density in Chart 18) 8. Coke, tonne/day and kg/hr 9. Total cycle gas oil = Feed - above products, kg/hr 10. Calculate flowrate of total cycle gas oil, BPSD. Look up the density of total cycle gas oil in Chart on slide 18. Calculate the actual conversion percentage using the formula: Conversion % = (vol. Feed - vol. Cycle stock) / vol. Feed x 100
If we need to model this reactor, how many lumps will you consider? And Secondly you did not mention about the thermolysis reaction (this must take place in according to me), in the riser section of the reactor. There might be change in phases, in the entry of the riser there have to be 3 phase (atomized liquid, solid and Hot Air) and at the exit of the riser ,there are only 2 phases (Vapor and Solid catalyst ). Please rectify if I am wrong and plz justify with correct explanation.
Yes you are correct, solid catalyst has not been called a phase as it does not participate in the reaction. But it exists for sure. At the entry, all 3 phases in 4 forms (atomized liquid, vapourized oil, hot air, solid catalyst) are present and at the exit, 3 phases exist, solid catalyst surfaced with C layer, vapourized cracked products mixed with air and heavy uncracked liquid droplets entrained with the cracked vapour if any. To model the reactor, there are several factors on which the number of lumps depend, so it would vary with different conditions in action.
It's actually the Problem of the Phone Camera, It takes on Auto Focus even if the setting is on Manual Focus and the Glitch is Just at the beginning. Once the Writing Starts, No Glitches Do occur after that in Most of the Videos. Since its an independent individual effort with minimum technical Setup and Aspects, just as an effort to reach out with the Proper contents, I hope you would bear with us, Stay with Us and Help us Grow. Thank you!!
To have a detailed chat and one to one consultation with me, you can book an event on my Calendar 📅 as per your requirement, on this link: engineeredlearnings.dayschedule.com/
Follow us at:
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MAIL your Queries and Suggestions at:
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Good explanation, one correction though, the slurry doesn’t “mix” with the feed. It exchanges heat with the feed in a heat exchanger. The slurry preheats the feed while it gets cooled down and is pumped around back into the column as a “quench”
it is used in a heat exchanger as u said but it is also used as a recycle to the riser as well to recover some of the entrain catalyst from the main column
Absolutely correct what you explained in this vedio because I working same plant last 5 years ....keep it up...
Thank you!
Great Information... Very helpful in Placements for Chemical Engineers
keep makeing such content we need teachers like your
please do frequently post such knowledgeable videos
Great explanation! Keep it up!
Really Helpful...... Thanks a lot
Keep up the good work
Good lesson! One correction though…you will never find an FCC Regenerator operating at 1200 degC, that’s way too hot! Typical max temperatures for an FCC regenerator are in the 750 degC range.
Very good explanation thank u very much
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Helpful and quality content! thanks
Thank you for staying with us!
Beautiful lecture. Very good. Go ahead.
Nice video
concise and easy to follow. much appreciated.
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Quite informative lecture,with phenomenonal explanation
Thank you!
Best
Excellent teaching dada..please make videos on important and common questions for chemical engineering interviews..also guide us how we can start our professional career in core industries...pls
Thank you.
Sure! Keep on following our page....
Great video and very well explained! Keep uploading more :)
- Final year Chemical engineering student
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Thank You so much.
My concepts are cleared after watching your video
but can you please help me in solving the below-mentined question based on FCC.
Given Data:-
• Catalytic cracking yields - charts 15-18 in Section 5 of Handouts.
• Liquid densities for C3 and C4’s in GPSA Engineering Data Book - Physical Properties GPSA-2
• Gas oil feed to FCC unit: 80,000 BPSD, 23 API.
• FCC Conversion: 70 vol %.
Calculate:
1. Total Feed, kg/hr
2. Fuel gas (C2 and lighter) production, kg/hr
3. a) C3 (Propane) and b) C3= (propylene), BPSD and kg/hr
4. C4= (Butylene or 1-Butene), BPSD and kg/hr
5. i-C4 (Isobutane), BPSD and kg/hr
6. n-C4 (n-Butane), BPSD and kg/hr
7. C5+ Gasoline, BPSD and kg/hr (Density in Chart 18)
8. Coke, tonne/day and kg/hr
9. Total cycle gas oil = Feed - above products, kg/hr
10. Calculate flowrate of total cycle gas oil, BPSD. Look up the density of total cycle gas oil in Chart on slide 18. Calculate the actual conversion percentage using the formula:
Conversion % = (vol. Feed - vol. Cycle stock) / vol. Feed x 100
The handouts and charts you have referred to are not attached, hence the question is not very clear!
Thank you so much... ❤️
So you are saying, the catalyst provides the heat for the reaction?
Yes, and the catalyst in turn gains it's heat from the Regenerator Exothermic Reaction.
Sir plz make a full video on furnace in refinery unit
Hatts of..✨
GOD 🙌
Bhai keep going but Amar aro valo lagto Jodi programming ar opora hoto......
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Thank you Chail da
Sir pls do some video on hydro cracking and cooking
Ok! We will see to it! Meanwhile Stay Tuned
If we need to model this reactor, how many lumps will you consider? And Secondly you did not mention about the thermolysis reaction (this must take place in according to me), in the riser section of the reactor. There might be change in phases, in the entry of the riser there have to be 3 phase (atomized liquid, solid and Hot Air) and at the exit of the riser ,there are only 2 phases (Vapor and Solid catalyst ). Please rectify if I am wrong and plz justify with correct explanation.
Yes you are correct, solid catalyst has not been called a phase as it does not participate in the reaction. But it exists for sure. At the entry, all 3 phases in 4 forms (atomized liquid, vapourized oil, hot air, solid catalyst) are present and at the exit, 3 phases exist, solid catalyst surfaced with C layer, vapourized cracked products mixed with air and heavy uncracked liquid droplets entrained with the cracked vapour if any.
To model the reactor, there are several factors on which the number of lumps depend, so it would vary with different conditions in action.
Rfcc and Coker and avu ka pura details me vedio upload sir
Bisal😍
Can you provide me pdf of this topic please?
No PDF is available with me.
Riser ka out reactor k top se enter karta hai bro.
Depends on the vapor you are producing, hot cracked vapor is generally less dense and has a tendency to rise up from the Riser into the Reactor
@@LifeBeyondBusiness but catalyst has travel from top to bottom.
Yes it's a counter current interaction between catalyst and the heavy oil in the riser itself
Camera ta thik koro....half to bhujlam e na....focus e hoi na
It's actually the Problem of the Phone Camera, It takes on Auto Focus even if the setting is on Manual Focus and the Glitch is Just at the beginning. Once the Writing Starts, No Glitches Do occur after that in Most of the Videos. Since its an independent individual effort with minimum technical Setup and Aspects, just as an effort to reach out with the Proper contents, I hope you would bear with us, Stay with Us and Help us Grow. Thank you!!
Ok....but i love ur content...short and to the point❤
Thank you so Much!! 🙂
Mad, have no idea how to make presentation.