Mass Flow Measurement of mixed vapor
Mass Flow Measurement of mixed vapor
(OP)
We have an application where we need the Mass Flow measurement of a mixed vapor. Unfortunately, we don't know the concentration of each of the gases but we know it will can range from 100% N2 to 80%Butadiene, 15%Pentene, and 5% N2.
Looked at Ultrasonic flow (Panametric), but were told the N2 will not work and our velocity is not high enough. We are expecting 0 - 100 lbs/hr of BD max...but again, the composition can change. Max flow is 100lbs/hr, normal flow 8 lbs/hr.
Any suggestions?
Looked at Ultrasonic flow (Panametric), but were told the N2 will not work and our velocity is not high enough. We are expecting 0 - 100 lbs/hr of BD max...but again, the composition can change. Max flow is 100lbs/hr, normal flow 8 lbs/hr.
Any suggestions?
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RE: Mass Flow Measurement of mixed vapor
With a VERY capable computer (say a Cray?) you could put an online GC in the stream and use an orifice meter with a new gas composition input a couple of times a minute. You are not going to find that calculation in a basic RTU, you'll have to write it yourself.
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: Mass Flow Measurement of mixed vapor
Line size?
What is the N2 velocity that it is "not high enough"?
RE: Mass Flow Measurement of mixed vapor
a GC sounds plausible: http://products.baseline-mocon.com/item/series-890...
TTFN
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RE: Mass Flow Measurement of mixed vapor
Check the individual gases as though each was 100% of the flow see what it looks like.
Do you have an analyzer that gives the composition?
Line size?
RE: Mass Flow Measurement of mixed vapor
Or a mass meter like an orifice meter and a gravitometer http://www.google.com/search?client=ms-rim&hl=...
or densitometer.
RE: Mass Flow Measurement of mixed vapor
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: Mass Flow Measurement of mixed vapor
Either from GC (not fast enough response), or Calorimeter....
______________________________________________________________________________
This is normally the space where people post something insightful.
RE: Mass Flow Measurement of mixed vapor
RE: Mass Flow Measurement of mixed vapor
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: Mass Flow Measurement of mixed vapor
RE: Mass Flow Measurement of mixed vapor
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Mass Flow Measurement of mixed vapor
______________________________________________________________________________
This is normally the space where people post something insightful.