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Help: NOx determination upstream of Cold Boxes

Thread starter JohnCalvin
Start date Nov 9, 2005

Status: Not open for further replies.

Nov 9, 2005

JohnCalvin

Chemical

I am urgently looking for any advice on what the accepted methods for determining NOx's are in ethylene and propylene entering cryogenic units. I am sure that anyone who owns such units is aware of the explosive hazard cause by NOx gums and NOx salts. I have two questions:

What operation philosophy do owners of such cryogenic units follow regarding NOx's?
What analytical technique do they use to measure them?

Many thanks,

John