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  1. ribabata

    Ethylene Tar Production

    Can anyone provide me with some detailed process description on the production of ethylene tar? This tar results from the production of ethylene from the steam cracking process (typically ethane as raw meterial). Heavy hydrocarbons, which consist of fuel oil, tar, coke etc. settles in separator...
  2. ribabata

    Air Cooled Condensers Controls

    Anyone has some tips on what control logic should be used for an ACC condensing steam from a turbine. Unit has 4 fans with variable speed drives. Objective is to control fan speed and # of fans in operation to maintain a fixed exhaust pressure (condensing turbine) Thanks
  3. ribabata

    Heat Exchanger Design - Heat Recovery

    I'd like some opinions on how to proceed on a particular type of heat exchanger design used for heat recovery. A single 2" SS316, Sch 40 approx. 900 ft. long that runs for 20 ft length then snakes back (U - Bend) for another 20 ft and so on. The entire tube arrangement therefore becomes approx...
  4. ribabata

    What is correct charge pressure for pulsation dampener bladder?

    I've seen #s varying from 60% to 90% of process line pressure. The Jesco-America pulsation dampener (liquid flows thru the dampener)recommends 60%. The Milton Roy dampener (T off the discharge line) recommends 90%. Check their web sites for specific details around their pulsation dampeners.

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