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  • Users: grt12
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  1. grt12

    sizing of vane separators

    Vendors include: Peerless Burgess Manning ConsepT CDS Engineering NATCO and many others. I found these by an internet search on vane Pack Separators.
  2. grt12

    Gas Turbine Overpressure Protection

    Why do you have a relief device on a turbine exhaust? is it not open to atmosphere?
  3. grt12

    Offshore Plant Performance Monitoring

    In my offshore experience this type of monitoring is only done when required by a project or specific reason. Generally trying to "steady" the operaiton is not always easy as many offshore facilities have their rates set by consumer demand and must be able to increase and decrease...
  4. grt12

    correct thermo method for simulation

    You could try PR
  5. grt12

    Fire and Non-Fire cases in Relief Valves?

    The fire case relief is not always the determining relief case for a pressure vessel. In a fire, unless you have a vessel extremely full (which is rare on a platform) the relief is of vapour not liquid therefore you do not have liquid and gas being relieved during the fire relief. To determine...
  6. grt12

    Clarification of example given in API-520

    I suggest you get a more up to date copy of API 520 - the latest is January 2000.
  7. grt12

    TEG dehydration

    There are various references around for doing first pass calculations, for example Campbell Gas text books. A vendor can also help, there are various around.
  8. grt12

    foaming/carry over in amine scrubber

    One suggestion is that at teh cooler temperatrue you got soem hydrocarbon liquid condensing which could cause the foaming. Have you tried approaching a vendor of amine systems to ask the question?
  9. grt12

    Slant cut on Relief Valve Outlet Piping

    The last plant I was involved with had no slant, just an open end pointing upwards. The bottom of the upward leg had a small weep hole to deal with rain water.
  10. grt12

    'Stock Tank' & 'Shrinkage' definitions

    Stock tank conditions are standard conditions, that is 15 deg C and 101.3 kPaa (or other units as required). Shrinkage measures the difference in volume flow from reservoir conditions to stock tank conditions, alloqing for the light ends to flash off from the crude.
  11. grt12

    Steam jet ejector

    Transvac and Yarway re two reputable suppliers who have web sites.
  12. grt12

    Desalter PSV calculation

    Maxxum, If you are in the dense phase (above the critical point) then the relief has to be regarded as a thermal expansion of a vapour and the relief calculation becomes a little more difficult. Latent heat is not an issue under these conditions.
  13. grt12

    Tubeside Rupture Protection

    A couple of points to note: 1. ASME has been modified so that it is no longer a 2/3 rule - the hydrotest pressure has been changed from 1.5 times MAWP to 1.3 times. 2. For tube rupture in this case, if flashing is occurring across the tube break then the relief rate may be too high for a PSV to...
  14. grt12

    glycol coil sizing

    This should be a straight forward heat transfer calculation to determine the surface area required, then determine the number of coils to achieve the required area. A good heat transfer text will help you with this (try Process Heat Transfer by DQ Kern)
  15. grt12

    find property

    You shold be able to find it by doing an Internet search on 2 methyldecane. The CRC Rubber Handbook of Chemistry and Physics may also have something.
  16. grt12

    Predicting Water Content of Natural Gas

    I have a spreadsheet based on the GPSA curves for water content of natural gas, where there is a correlation provided for the water content. If you send me your email address I'll send you a copy.
  17. grt12

    Relief Valve Fire Sizing - Pressure Vessel

    Gilzow, To do what you are asking we use a simulation in HYSYS which applies the heat input to a series of flash vessels and over time the temeperature rises and boiling is predicted. By using this approach we get a better estimate of the relief temperature and a good idea of how the mixture in...
  18. grt12

    Removal of sulfur in gas (petroleum)

    Yes there are a number of them. Get hold of the May 2002 issue of hydrocarbon processing which has a listing of all the major gas processes available, who licenses them and a description.
  19. grt12

    pressure - Pa vs. Psig vs psia

    You should get the same answer either way as the 6894 applies to the 14.7 as much as the 25. According to my unit converter, 25 psig = 273721.8 Pa (absolute)172390 Pa (gauge) - a lot depends on your pressure base as to the exact answer to the above. Suffice to say, converting either way you need...
  20. grt12

    Gases conditions definitions

    Note that atm is not an SI unit ! Standard conditions in SI are 101.3 kPa and 15.6 deg C though often 100 kPa and 15 deg C are used.

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