Are there any good methods for sampling hydrogen sulfide?
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Our company has recently upgraded a naphtha hydrogenation unit, and sampling is required before the recycle hydrogen compressor; the maximum concentration can reach 5000 ppm. Do any of you have any good methods for sampling hydrogen sulfide-containing gases?
I’ve never seen any effective closed-system sampling devices. It is required to wear an air respirator.
Our hydrogenation sampling port is located at the outlet of the circulating hydrogen separator tank; it is not sealed, so just be careful of the wind direction when taking samples
I have heard of online chromatographic analysis; perhaps the original poster could take a look at the “Coal Chemicals” and “Sulfur” sections to see how hydrogen sulfide sampling is carried out in the Claus process
Ear suction, air sacs – there are such sampling tools available, but safety must be taken into account
To be honest, when design institutes carry out design work involving hydrogen sulfide, sealed sampling is generally used, as that’s what the regulations require. As for on-site operation, it’s really hard to say which one is better.