Liquid purification or separation – Processes – Chemical treatment
Reexamination Certificate
2011-04-26
2011-04-26
Smith, Duane (Department: 1776)
Liquid purification or separation
Processes
Chemical treatment
C423S219000, C423S231000, C423S243070, C095S138000
Reexamination Certificate
active
07931815
ABSTRACT:
A method of using a sulfided iron reagent to remove oxygen from 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 is disclosed. In a preferred embodiment, the reagent is made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite which are used to remove oxygen from a hydrocarbon or carbon dioxide stream that also contains sulfur compounds such as hydrogen sulfide.
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Howard, Mike, et al, “Operating Experiences at Duke Energy Field Services Wilcox Plant with Oxygen Contamination and Amine Degradation”.
Presented at the 51st Laurance Reid Gas Conditioning Conference, Feb. 25-28, 2001 at the University of Oklahoma.
Farha Floyd E.
Kane James A.
Locke Lord Bissell & Liddell LLP
New Technology Ventures, INc.
Smith Duane
Wu Ives
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