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  • Users: patibar
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  1. patibar

    Movable multi hole orifice

    we have two restriction orifices in our sea water return line. We would like to open these orifices partially whenever choked with sea shells and plastic material. Can somebody help me in this. Can I convert the existing multi hole RO into Slide gate valve with multi hole orifice...something...
  2. patibar

    Power Generation from Sea Water Return

    In one of our unit, we kept two restriction orifices in sea water return line (72") to create back pressure for adequate sea water distribution to other units. Now the problem is these orifices are choking with plastic material, which was lined inside a cement lined carbon steel piping. What I...
  3. patibar

    Sea Water Line online dechoking technology

    In one of our unit, we have cement lined carbon steel piping for sea water (72" line and 15000 m³/h). Return line is having two multi hole orifices, which are getting choked with cement material. In 2006, we have provided one more plastic lining to protect the cement lines. But this time...
  4. patibar

    Multi hole orifice in Sea Water return Line

    In Our site there are total seven plants and Sea water is supplied to some of the plants. The first plant near to the sea water supply having issues in return line. Because of high pressure drop available, we have inserted a multi hole orifice in the return line (72"). Then we found flashing of...
  5. patibar

    Designing unflooded (Self Venting) Piping

    In Ethylene Glycol unit, recently we have decided to route the vaccum condensate of PGU Refining column two stage ejector system to an existing vessel, which is having a spare nozzle at the bottom of the vessel. The vaccum required in the column is 49 mmHg. The vertical distance between...
  6. patibar

    Storage Tank Heat Gain

    We are thinkng of transfering isopentane from iso container to an internal floating roof storage tank, and to store it. In Middle East, as you know the ambient temperatures are very high, and the isopentane boiling point is 27.8°C, we are thinking of providing chiller and maintain the tank...
  7. patibar

    Barometric Leg Design

    In one of our unit, the existing barometric leg from a two stage ejector-condenser system is routed to OWS. Because of some TOC(Total Organic Comp)at utilities issue, proposed to divert the stream to other existing vessel. We have the problem of space constraint. The proposed vessel is far away...
  8. patibar

    Compressor Efficiency

    What is the significance of using both adiabatic and polytropic efficiencies for compressors? Why we calculate both efficiencies?
  9. patibar

    Static Pressure

    I would request somebody to help me in understanding the concept of using static pressure in Fans and blowers performance curves. Normally for centrifugal pumps there will be a characteristic curve of differential head vs Flow. Why we use statis pressure rather than the total pressure for...
  10. patibar

    PSV Requirement

    We are going to install a filter in tailgas compressor suction line of (18"). I would like to go with out any requirement of PSV. As it is a gas filled line, there is no possibility of pool fire scenario. If i keep open the both inlet and outlet valves in "Car Seal Open" position, I can omit the...
  11. patibar

    allowable velocity criteria

    What is the maximum allowable velocity for a nitrogen service line which is an intermediate service (not continuous)?
  12. patibar

    Unisim Simulation

    Hi, While i was working on Unisim to check the performance of a stripper column, i was facing a problem with tray sizing. In tray sizing, i have given all the details of trays and selected the tray flooding method as "minimum Csb". Then the model was Flooding was showing jet flooding. But, if i...

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