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  • Users: KazakhJeff
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  1. KazakhJeff

    Dirty Jet Fuel

    Our refinery ships out Jet Fuel by rail tank car. We had in recent times a shipment which was rejected by the customer, as it contained some solid material (rust). I have checked though all stages of loading, etc, and find that the Jet Fuel here is loaded to standard CS rail tank cars, which...
  2. KazakhJeff

    Metering of waxy crude oil

    We run a refinery which receives its crude down a pipeline owned and metered by a third party using Corilis meters, which are the contractual custody transfer point. This crude is extremely waxy, which means that pour point depressants and heating is used down the line. We have noticed when...
  3. KazakhJeff

    Sour Water in Vacuum Unit

    We run a vacuum tower with steam ejectors, and send the sour water directly to offsites for purification. We have heard that elsewhere refiners run this sour water to their desalters. Any comments please? Are there any particular problems with this? We are nervous about doing this due to phenol...
  4. KazakhJeff

    Vacuum Tower Pressure

    Can anyone help please? We have recently started-up a mothballed vacuum crude distillation tower, and are running at the design condition of approx 60 mmHg in the tower top. We use 3 (steam) ejector stages to achieve this. We are seeking guidance for how we situate ourselves as concerns our...
  5. KazakhJeff

    Lab Vacuum Distillation

    We are due to start up a Vacuum Distillation unit shortly, and I am seeking advice on the best laboratory testing method to follow our operation (feed plus products) and equipment for vacuum distillation, namely advice on whether to choose ASTM 1160 or ASTM 5236 (or other), plus recommended...
  6. KazakhJeff

    Pressure Relief Valves

    In Kazakhstan, our refinery safety (pressure) relief valves are Soviet standard, with inherant problems of unreliability. The springs need changing annually, for instance. Can anyone suggest western manufacturers who we could contact for quotations and possible purchase? Also, what it the...
  7. KazakhJeff

    Problem in Crude Tank

    We run a refinery, which shares its crude storage with an export crude terminal. Our largest floating roof tank has developed a leak in the roof, as well as about 10% of the pontoons. Oil covers about 80% of the roof now. We cannot sit the tank on the floor due to waxy deposits, and management...
  8. KazakhJeff

    Thermocouples in Crude Vacuum Furnaces

    I seek advice for the use of tube skin thermocouples in crude vacuum furnaces. Is the intention normally to check the furnace tubes in normal process operation, or decoking, or both? Does anyone have practical advice for how they work? How many should we place, and where?
  9. KazakhJeff

    Vacuum Unit Transfer Line

    I am seeking advice for recommended suppliers for Transfer Lines (furnace to tower) for a Vacuum Dist Unit. Metallurgy is 15% Cr, 5% Mo. Diameter 600 mm. Location Kazakhstan, Central Asia, therefore most likely source is Central or Eastern Europe. Any suggestions please.
  10. KazakhJeff

    Diluent to Visbreaker Furnace

    I'm working in Kazakhstan where the refinery uses a mix of gas oil/diesel as the diluent to the Visbreaker furnace, in place of steam/condensate. Has anyone else experience of this? If so, does it work in other locations (and what are the benefits)? Has anyone made the switch to H2O, and if so...

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