API Standard 521 (ISO 23261) states that the required relieving rate is difficult to calculate and that a portable 3/4" x 1" valve is very commonly installed to provide protection.
The standard does give some cautions with regards to large diameter liquid pipelines where the distance between...
One question popped up, about heat exchanger with two tube( one for steam and one for ammonia liquid), between the two tubes is methonal. The RV of shell side is 6890 lb/hr( Methonal), the tubeside of ammonia is in liquid condition(-32 C@ 900 Kpa), flow rate is 399kg/hr). I just do not know how...
One question popped up, about heat exchanger with two tube( one for steam and one for ammonia liquid), between the two tubes is methonal. The RV of shell side is 6890 lb/hr( Methonal), the tubeside of ammonia is in liquid condition(-32 C@ 900 Kpa), flow rate is 399kg/hr). I just do not know how...
Hi Noose,
I want to check it size and installed correctly, such as if the inlet prossure drop if less than 3%,back pressure is not more than 110% for conventional PSV, etc. If not good, I have to size it again.
Regards,
Jim
I am going to do the revalidation of nitrogen fertilizer plant. But I do not have experience in sizing PSV for equipment with chemical reaction. Can you give me a hint ?
