SilcoTek Coatings - Overview - page 66

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* Detect costly process upsets
in a fractionof the time
* Prevent catalyst contamination
by eliminating reactor wall effects
* Assure regulatory compliance
–Rule 1118
–Ultra-low sulfur diesel
andgasoline standards
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Lit Cat #SN-010
Figure 1: Sulfur compounds are stable inSilcoNert 2000 treated stainless steel systems- 17ppbv
hydrogen sulfide in500ml cylinders1 .
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Accurateanalysisof part-per-millionandpart-per-billion levelsof sulfur
containingcompounds likeH2Sandmethylmercaptan inpetrochemical
streams anddownhole samplers arecritical tomeetingnew regulations for low
level sulfur.Manyorgano-sulfur compounds, likehydrogen sulfide (H2S),methyl
mercaptan, andethylmercaptan, adsorb tometal surfaces.
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Figure 1depicts performance results from a comparisonof sample cylinders
(typically used in refinery or down hole sampling) inwhich a gas containing
17parts-per-billion (ppbv) hydrogen sulfide (H2S) was stored for 7days in
untreated andSilcoNert 2000 treated stainless steel highpressure sample
cylinders. TheSilcoNert 2000 treated sample cylinder demonstrated superior
sulfur/H2S inertness andwill reliably store low levels of active sulfur compounds
for longperiods of time. In contrast, H2Sdegraded rapidly in the untreated
cylinder, andwas totally adsorbedwithin 24 hours.
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