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Recent content by all2win

  1. all2win

    caustic Tower

    In Ethylene Cracker Plants, Caustic tower is placed between Cracked GAs Compressor Final Stage and Pre Final Stage(eg 3rd and 4th).Is there any Technical reason behind it ? Or Its Just matter of Economics??? Your Views Please
  2. all2win

    Seal Pot level

    hi all, I sometimes wonder abt the overemphasis on Seal level in the Reboiler Seal pot. Here the reboiling medium is propylene refrigerant vapor. the reboiling is perfect even without the level in the seal pot. LT and LG are also counter checked. And never faced the problem of hot vapor...
  3. all2win

    PSV Vent To Atmosphere

    thanx for your inputs
  4. all2win

    PSV Vent To Atmosphere

    Hi Everyone, Some of the PSV's vents provided in Distillation Towers are routed to Atmosphere (if they pop up), not to flare as done normally. This is the case in most of Lighter hydrocarbons handling equipments like in Deethaniser and Ethylene tower. why cant we put them into flare? .IS...
  5. all2win

    Hydrogen Chloride (gas) neutralization

    NaoH Flakes( Assuming 99% concn)is too much of concentration to neutralise 1% HCL Gas. Best way i sto Dilute 33% cuastic to Lesser concenration (~ 5%) and use it.
  6. all2win

    DP across Filter Increasing

    Yes. The sulphuric acid carryover is more now .We tried to bypass one tray (bubble cap) in Drying tower.Still it doesnt work.
  7. all2win

    DP across Filter Increasing

    Hi Everyone, I have this problem of DP across the filter increasing.We are using Sulphuric acid to dry the Chlorine in a Drying tower (Packed bottom and Tray top). In the downstream , we have a Dry Chlorine Filter( 5 no of candle filters) to remove the carry over sulphuric acid.Nowdays the...
  8. all2win

    Hydrogen line welding

    Hi All, I have a situation here.we have to do welding on a line whose upstream is connected to the hydrogen system and the downstream is connected to a tank which is also blindedand the line is isolated with valve and tail blinded with teflon sheet. Now During welding the earth rod...
  9. all2win

    Suitable Material for 50% Sodium Hydroxide

    Hi Bewdley and CausticSoda, Dont get shocked. i am operationg a caustic soda plant which has 465 TPD caustic which means more than 180000Tons.we are using membrane cell tchnology. bye
  10. all2win

    flowmeter basics

    hi Guys, One simple Question.Why all volumetric flow meters measure flow in Nm3/hr , not in M3/hr? all2win
  11. all2win

    Online calibration

    HI all, it's not smart type transmitter.I dont want much accuracy and moreover i cant isolate the LT without draining. i think i should go for the Age-Old Dip stick method. thnx
  12. all2win

    Online calibration

    Hi All, We have a 78 % H2SO4 storage tank whose Level transmitter is not working. (DP type). we are not able to isolate the valve so that we can calibrate the LT.We have sufficient quantity of acid inside which we dont want to drain. Is there any way to solve this problem or...
  13. all2win

    Standard & Normal Conditions

    Hi, I am happy Someone asked this question.
  14. all2win

    numerical methods

    hello, Anyone can suggest webresources on using numerical methods in C++. Anything is welcome tnx
  15. all2win

    Practical Process Control Book

    hi CARF, That's the great stuff u haVE posted.i wonder why nobody has appreciated it? All2win

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