31 replies to this topic

[Qalander (Chem)]

Dear Herrani,

Thanks For Your Responce But Still I Am In Confusion if downstream Volumetric flowrate across the orifice is higher than the upstream Vol Flowrate ( Means Through BDV ) Then How We are reducing the capacity of flare because the Vol Flowrate is Increased Because Of Orifice.

Please explain in details.

Dear ajayd,

I request you to kindly once again go through the various posts with a Cool/Resolute free mind.

If the very motive of Restriction Orifice insertion is to restrict flow(within certain limiting parameters);then what is the further discussion's requirements;if any?

[fallah]

Then How We are reducing the capacity of flare because the Vol Flowrate is Increased Because Of Orifice.

You push me to show this simple issue by an example:

Case 1 Before putting the RO in a specified line with gas passing inside: Suppose Volumetric flowrate is 100 cubic meter per hour

Case 2 After putting the RO:Then Volumetric flowrate before/after RO would be e.g. 60/70 cubic meter per hour

As you can see the flowrate after putting the RO (Case 2) decreased with respect to Case 1 (i.e. 100---->60).It is observed even though the flowrate after RO in case 2 increased,still remained lower than the flowrate before putting the RO.

Of course,mass flowrate in Case 2 is decreased as well.

[ajayd]

Case 1 Before putting the RO in a specified line with gas passing inside: Suppose Volumetric flowrate before/after RO is 100/120 cubic meter per hour

Sorry I didnt get you.

How the flowrate will be different before putting the ro in the line?

[Qalander (Chem)]

Case 1 Before putting the RO in a specified line with gas passing inside: Suppose Volumetric flowrate before/after RO is 100/120 cubic meter per hour

Sorry I didnt get you.

How the flowrate will be different before putting the ro in the line?

Dear ajayd Hello/Good Morning,
Can you not entertain my humble request in previous post please!

[fallah]

Case 1 Before putting the RO in a specified line with gas passing inside: Suppose Volumetric flowrate before/after RO is 100/120 cubic meter per hour

Sorry I didnt get you.

How the flowrate will be different before putting the ro in the line?

Sorry for my mistake.You can see my corrected post regarding the above wrong statement.

[ajayd]

Thank You Fallah.

[VikingUK]

Dear All,

Please explain me why we are putting RO in the Bypass Shutdown Valve Line...........?

Regards,

Ajay

To prevent too great a differential pressure across the main valve