Ketene Flow measurement Help
Ketene Flow measurement Help
(OP)
I am trying to find a flowmeter that could accurately measure gaseous ketene flow at <0 oC and <200 mmHg vaccuum. Our current flowmeter is a venturi meter with a DP Xmitter. But because of ketene's reactive nature, the residue formed from it's self-polymerization plugs the taps leading to inaccurate readings. Does anyone know of a reliable flowmeter that could measure gaseous ketene within 1-5% accuracy and that could handle the reactive enviroment?
Thanks
Thanks





RE: Ketene Flow measurement Help
you can use purges, although these tend to result in deposition at the process/purge interface.
You can also mount you leads on top of the line to allow self draining. None of these will effect a permanent fix, however.
Does the polymer have a "pour point" that heat tracing can help with? Does it polymerize in the pipe? There are alternative meters, but they measure a velocity of some kind and therefore tend to produce meter indications that drift with the degree of polmerization taking place.
It is a tough service
RE: Ketene Flow measurement Help