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Last 10 active questions:


Question No : 5926  Date Posted :10/19/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Seeking effective method for remove iron particle in crude
  We have experienced ECAT iron poison issue in RFCC unit, the RCA was iron particle deposited on catalyst surface formed "nodule", during the iron poisoning period, high spike iron content in RFCC feed was found, all the evidence showed mostly iron fine particle (0.5~2 um) was from crude oil.

So far our countermeasure is focus on RFCC unit (ECAT flush & increase fresh CAT add rate). Is there any better way to remove iron particle in crude?

Number of responses: 0


Question No : 5925  Date Posted :10/18/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : FCC Rx Cyclone inlet velocity
  Can we increase the Rx cyclone inlet width to reduce the cyclone inlet velocity? What could be the consequences if the cyclone is operated just above the design inlet velocity? Can it impact on the cyclone collection efficiency?
Number of responses: 0


Question No : 5924  Date Posted :10/15/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Refinery Heaters
  I want to know the difference between the pipe and tube. To clarify further, to pass flow of heater we need (tube). Why not call it pipe? Why we used tube inside heaters?
Number of responses: 1


Question No : 5923  Date Posted :10/7/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Olefins containing LPG fractions (FCC products) need to convert into high octance gasoline component
  We need to convert refinery stream of C3 & C4 in high octane gasoline pool. Please suggest most robust technologies. We would like it preferentially without using HF & H2SO4. The typical process is Alkylation, Butamer but we need to know other processes as well.
Number of responses: 2


Question No : 5922  Date Posted :10/3/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Partial pressure effect on FCC
  What will be the effect of hydrocarbon partial pressure in FCC unit production. Low partial pressure is good or high partial pressure is good?
Number of responses: 1


Question No : 5921  Date Posted :9/19/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Pool fire in fractionator
  Could any one please tell me about the poolfire in fractionator? How do we identify it? What precautions must be taken to avoid this?
Number of responses: 1


Question No : 5920  Date Posted :9/15/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Desalter Transformer
  Why is desalter transformer secondary side kv not increased?
Number of responses: 0


Question No : 5919  Date Posted :9/13/2017 View detailsView details and responses  
Category : Refining Submit a responseSubmit a response  
  Subject : Fractionation Column Flash Zone
  What is the reason behind increase in flash zone pressure? How and why does this happens?
Number of responses: 2


Question No : 5918  Date Posted :9/7/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Steam Drum
  Why are Steam Drums/Boilers usually kept at a higher Elevation than the rest of the Vessels?
Number of responses: 2


Question No : 5917  Date Posted :9/4/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Coagulant for Purge Treatment Unit RFCC
  What is the Coagulant normally used in RFCC units?
Number of responses: 0


 


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