Egyptian gas plant employs absorbents for Hg removal

Initial mercury measurements in 2000 for gas upstream of Khalda Petroleum Co.’s Salam gas plant in Egypt’s Western Desert showed mercury content between 75 and 175 μg/std. cu m. Concern for the plant’s downstream aluminum heat exchangers led the company to decide, therefore, to install mercury-removal equipment.To avoid mercury condensation under pipeline conditions, mercury should be removed from sales gases to less than 20 μg/std. cu m.1The company evaluated two alternatives-UOP’s HgSIV adsorbents and Puraspec’s 1156 absorbents-for removing mercury from natural gas.This article will review the corrosion mechanism of mercury and aluminum, the a...

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