MERCURY REMOVAL FROM HYDROCARBON LIQUIDS

摘要

Mercury is found in an ever-increasing number of condensate fields worldwide. The level of mercury in the condensate can vary significantly depending on the location of the field.Since mercury is known to cause corrosion of aluminium and liquid metal embrittlement (LME) of many of its alloys, as well as poisoning of metal based catalysts, it is important that it is removed to prevent equipment failures in plants where these metals are used. Removal of this contaminant not only protects plant equipment but also reduces the risk of personnel inhaling mercury vapour and dermal absorption of organic mercury during routine maintenance or shutdowns.Johnson Matthey Catalysts have supplied PURASPEC absorbents to over 30 units in commercial operation for the removal of mercury from propane, butane and light / heavy naphtha streams. Removal of the mercury from those streams not only increases the value / marketability of the naphtha but also prevents poisoning of metal-based hydrogenation catalysts and equipment damage.BP Netherlands Energie (BPNE) operate gas production platform P/15-D in the Dutch sector of the North Sea. Gas and Hydrocarbon condensate are brought onto the platform and go through a dehydration system before being exported via pipeline to on-shore storageThis paper will review the different steps taken by BPNE to select and install suitable mercury removal technology on the platform. Operational data will be presented in support of the technical evaluations.