December 2006

Process Technology

Enhance mercury removal from naphtha

Improved activated carbon provides adsorption of various mercury species

Akihisa, N., Ikushima, K., Taiyo Techno Service Co., Ltd; Mokhatab, S., Consultant

Mercury is present in crude oil and natural gas. Unfortunately, mercury is highly poisonous to downstream catalysts used in the refining and gas-processing industries and must be removed in pretreatment operations. New developments with adsorbents can efficiently remove mercury. Several industrial trails show the benefits of new adsorbents in pretreating naphtha streams. Background. Underground resources of crude oil and natural gas condensates contain various metals including small quantities of mercury. In petroleum products, mercury exists in a combination form: as simple mercury in the metaled form, and as an organic compound. More important, mercury can degrade catalysts involved in o

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