Sulfur removal using ferrous carbonate absorbent
AssigneeNew Technology Ventures, Inc.
InventorFloyd E. Farha
Life of this patent
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Abstract
Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followed by drying, are used to treat and significantly reduce concentrations of hydrogen sulfide, carbonyl sulfide, organic disulfides, mercaptans and other sulfurous compounds and contaminants in gaseous and liquid fluid streams such as natural gas, light hydrocarbon streams, crude oil, acid gas mixtures, carbon dioxide gas and liquid streams, anaerobic gas, landfill gas, geothermal gases and liquids, and the like.
Claims37
An absorbent for sulfur-containing compounds disposed in streams of gas, liquid, or mixed gas and liquid at temperatures ranging from about 52 to about 130° F. and at pressures ranging from about 200 to about 500 psig, the absorbent comprising ferrous carbonate as its principal absorptive component.
A method for making an absorbent that is useful for removing sulfur-containing compounds disposed in streams of gas, liquid, or mixed gas and liquid by providing from about 50 to about 100 parts by weight of ferrous carbonate having a particle size of about 100 mesh, by blending with the ferrous carbonate from about 2 parts by weight to about 10 parts by weight cementitious binder and from about 15 to about 25 parts by weight water, by extruding the blended ferrous carbonate, cementitious binder and water to produce an extrudate of desired length, and by thereafter drying the extrudate to a moisture content less than 3 weight percent.
A method for absorbing sulfur-containing compounds disposed in a stream of gas, liquid, or mixed gas and liquid at temperatures ranging from about 52 to about 130° F. and at pressures ranging from about 200 to about 500 psig by providing an absorbent principally comprising ferrous carbonate as its principal absorptive component and by contacting the ferrous carbonate with the stream.
Dependencies are inferred from the claim text.