سال انتشار: ۱۳۹۱

محل انتشار: اولین کنفرانس بین المللی نفت، گاز، پتروشیمی و نیروگاهی

تعداد صفحات: ۶

نویسنده(ها):

HOJJATOLLAH ALMASI – 1Inspection Engineer, South Pars Gas Company
FATEMEH NAMAZI – Corrosion Engineer, South Zagros Oil and Gas Company

چکیده:

Natural gas, being produced from gas fields around the globe, along with a large number of other harmful substances (CO2, H2S, RSH, COS, etc.), oftencontains mercury. Mercury’s potentially harmful effect on humans and on the ecological system as a whole as well as the risk regarding mercury’scorrosive effects to the very sophisticated and expensive process material, equipment and catalysts is making its removal an imperative.Gas plants reduce mercury in natural gas with mercury removal units (MRUs). MRUs use fixed bed absorbers, often with sulfur-impregnated carbon orother chemisorbents as the active material. Mercury removal by sulfur-impregnated activated carbon is the best commercial method for treating themain gas stream, provided the carbon is not blinded by adsorbed hydrocarbon. However, it is not suitable for treating liquids because of solution of the sulfur.Solid beds of iron sulfide, and sodium vanadate in the treating solution in the decarbonation units, hold promise for mercury removal and merit furtherinvestigation. This paper will evaluate and compare the various mercury removal technologies namely ActivatedCharcoal-Sulfur System, Oxidizing Solutions, Acids, Metals, Metal Sulfides and other new methods. Ultimately the objective is to produce a system that assures the safety of plant operation thus all have to b addressed when considering corrosion management