6 replies to this topic

[Abm]

I Am Working In a Two Stage Sour water Stripping Unit Of Capacity 14MT/hr. We Have A Flash Pot To Drain the Accumulated HC in Sourwater Surge Drum and the drain in routed to Oilywater sewer. Now The Issue is the lighter HC Are not getting seperated effectively and Carried over in Drain giving out HC Vapours and a posing threat to ignition. Kindly suggest how to design a effective Flashpot and What Are the things to be considered in it. Any Notes Regd Types of Flash Pot Will aslo be Helpful. ThankU

[Bobby Strain]

This kind of material should be discharged to a closed drain system.

 

Bobby

[Abm]

Yes But The Design Is with a Flash Pot. The Flash Pot vent is at Elevated Height to atmosphere and the Drain to oily water sewer

[Bobby Strain]

That is not legal to vent hydrocarbons to the atmosphere in the United States. And it is dangerous.

[Abm]

What Scheme Is bèen Followed in The US to discharge HC Accumulated in the Sour water surge Drum.

[abhi_agrawa]

One possibility could be to connect the vapor line to flare system.

[Technical Bard]

The problem is that your flash pot is operating at conditions where these light hydrocarbons are not liquid.  Thus the vent - which SHOULD be tied into a flare or vapour recovery system.  There would be no pot design that could capture these light ends with either compression or a significant absorption step, both of which will be very expensive.