The removal of mercaptan components from a hydrocarbon condensate stream at a Canadian gas plant using a novel removal chemistry and separation technology was investigated. The removal of mercaptans was required to meet pipeline specifications for total sulfur and mercaptans concentrations. The on-site work consisted of verification of the non-regenerable Nexo Solutions chemical additive (Exion~R LT-200) for mercaptans removal in combination with the Exion~R LT (Liquid Treating) process separation system. A miniaturized version of the removal process system was assembled on-site, and a 1.65 GPM slipstream of condensate was processed through the miniaturized system. Condensate samples were captured before and after treatment and analyzed using a gas chromatograph in order to quantify mercaptan removal levels. The trial results showed that removal of mercaptans (up to 95% for C1-C3, up to 90% for C1-C4, up to 60% for C1-C7) is achievable using the Exion~R LT-200 product and the Exion~R LT process system in combination. The removal efficiency is related to the additive concentration applied and water wash stage.
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