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US 5,325,673 AGranted
Natural gas liquefaction pretreatment process
AssigneeThe M. W. Kellogg Company
InventorsCharles A. Durr, WIlliam C. Petterson
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AssigneeThe M. W. Kellogg Company
InventorsCharles A. Durr, WIlliam C. Petterson
Estimating the term…
A method for pretreating a natural gas stream using a single scrub column to remove freezable C.sub.5+ components and provide an LNG product which can be conveniently handled and shipped is disclosed. The method comprises feeding a natural gas stream to a feed point on a scrub column operated substantially as an absorption column wherein the heavy components are absorbed from the feed gas using a liquid reflux essentially free of such C.sub.5+ components. The feed can be vapor introduced at a low point on the column, or can be optionally split, cooled and/or expanded and introduced at one or more feed points on the column. The reflux stream can be overhead vapor condensate having a temperature of about - 40.degree. C., or methane-rich LNG or a combination of LNG and vapor condensate.
A method of pretreating a natural gas stream for liquefaction by removing freezable components, comprising the steps of:
A method of pretreating a lean natural gas stream for liquefaction by removing freezable components, comprising the steps of:
Dependencies are inferred from the claim text.