4 replies to this topic

[stu]

Dear Sir,
Please explain about Glycol Seal pot exist upstream of Flare .
Somebody says Glycol seal pot present only at onshore Flare setup and not at Offshore Flare setup.Please explain why it is so.
Thanks.
Regards,
Stu.

[fallah]

Liquid Seal could be an integral portion of the Flare Package, and used for the following reasons:

1-Flashback protection;
2-Maintain positive header pressure;
3-Direct flare gas flow.

I do not know why it not being used (as you said) in an Offshore Flare.

[stu]

Dear sir,
Thanks for your reply.apart from the function of Liquid head maintaining,shall we use check valve to prevent the back flash of fire flow.
Please clear the doubts.
Thanks,
Stu

[fallah]

Dear sir,
Thanks for your reply.apart from the function of Liquid head maintaining,shall we use check valve to prevent the back flash of fire flow.
Please clear the doubts.
Thanks,
Stu

Considering check valve closing time lag and possibility of leakage+Main function of check valve as backflow prevention-->No effectiveness could be considered for check valve as preventer of fire's backflash

[djack77494]

shall we use check valve to prevent the back flash of fire flow.

stu,
I would never put a check (non return) valve in a flare header and I have never seen a flare header containing a check valve. Besides the fairly high pressure drop incurred by the use of a check valve, having a mechanical device which could fail (closed) is very unwise in my opinion.