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Last 10 active questions:


Question No : 5940  Date Posted :12/10/2017 View detailsView details and responses  
Category : Refining Submit a responseSubmit a response  
  Subject : Heavy reformate clay-treater clay replacement in Paraxylene unit
  I want to know why fire occurs when we unload the clay from the heavy reformate clay-treater during clay replacement in Paraxylene unit.
Number of responses: 0


Question No : 5939  Date Posted :12/8/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : VSB conversion
  In our Soaker VSB we observed in the last months lower residue stability (p-value) at the same furnace COT. Based on this, we had to reduce the unit conversion to keep producing stable fuel oil. Feed quality changes and throughput variations have not impacted this situation. Do you have any suggestion about the possible causes of lower VSB residue stability?
Number of responses: 2


Question No : 5938  Date Posted :12/4/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : MARS Crude
  Is it possible to produce VG 30 and VG 40 grade Bitumen from MARS crude?

What is the usual penetration and density (@ 50 deg C) of Vac. Resid stream (545 deg C +)?

Number of responses: 0


Question No : 5937  Date Posted :11/29/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : CLOUD POINT variation in a blended crude oil
  Is there any correlation available for resultant cloud point of blended crude oil?
Number of responses: 2


Question No : 5936  Date Posted :11/25/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : CCR Reactors
  We are having CCR unit of Axens technology. Why are the size of the 4 reactors different for CCR?
Number of responses: 2


Question No : 5935  Date Posted :11/13/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Refinery
  This is in continuation to the response to Q 5934 on this forum.

We used centrifugal pump to drive and send Naphtha to storage tank.

Number of responses: 0


Question No : 5934  Date Posted :10/29/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Refinery
  Generally in refinery to displace liquid from one point to another point we need Pump especially in distillation unit. We have centrifugal pump to displace naphtha product from vessel. To clarify further each pump in my plant needs only one cooler to cool down and protect the pump. But naphtha pump has to source and for that reason one of them is cooler and another one seal put. Please tell me your observation about that and your interpretation.
Number of responses: 2


Question No : 5933  Date Posted :10/29/2017 View detailsView details and responses  
Category : Refining Submit a responseSubmit a response  
  Subject : Refinery
  In our plant we have a boiler (Fire tube) to generate steam, my question is for safety of each equipment we have a safety valve but in top of boiler we have 2 safety valves and not just 1. I want to know why 2 ways not just 1, we can create a big one instead of 2 small valves.
Number of responses: 1


Question No : 5932  Date Posted :10/29/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Tower internal component
  What happens if we increase number of Tray in any stage in distillation tower, especially about (quality, quantity) of products?
Number of responses: 2


Question No : 5931  Date Posted :10/25/2017 View detailsView details and responses  
Category : Refining Operations Submit a responseSubmit a response  
  Subject : Effect of water on COMOX reactor catalyst
  What is the effect of free water in Naphtha feed on catalyst in Hydrogen generation unit? What % of water can be allowed in feed?
Number of responses: 1


 


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