Separation of sulfurous materials
Assignee8 Rivers Capital, LLC
InventorsRodney John Allam, Mohammad Rafati
Life of this patent
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Abstract
The present disclosure relates to systems and methods for separation of sulfurous material(s) from a multi-component feed stream. The systems and methods can comprise contacting the multi-component feed stream with a solvent in a contacting column so that at least a portion of the sulfurous material(s) is transferred from the multi-component feed stream to the solvent. A stream of a substantially purified gas can thus be provided along with a liquid stream comprising at least a majority of the sulfurous material. In particular, the solvent can comprise liquid carbon dioxide, which can be particularly beneficial for removing sulfurous materials from multi-component feed streams.
Claims37
A method for separating a sulfurous material from a multi-component feed stream, the method comprising:
- processing a multi-component feed stream in a contacting column with liquid carbon dioxide so that the multi-component feed stream is contacted with the liquid carbon dioxide, the multi-component feed stream comprising one or more fuel gas components including at least one hydrocarbon, and the multi-component feed stream further comprising a sulfurous material including at least hydrogen sulfide;
- withdrawing from the contacting column a bottom product stream containing at least a portion of the sulfurous material including at least hydrogen sulfide from the multi-component feed stream;
- and
- withdrawing from the contacting column an overhead vapor stream containing at least a portion of the one or more fuel gas components including at least one hydrocarbon.
A method for separating a multi-component feed stream, the method comprising:
- providing a multi-component feed stream at a temperature of about −10° C. to about −55° C., the multi-component feed stream comprising one or more fuel gas components including at least one hydrocarbon, and the multi-component feed stream further comprising a sulfurous material including at least hydrogen sulfide;
- providing carbon dioxide at a temperature of about −10° C. to about −55° C. and a pressure of about 7 bar to about 60 bar, wherein greater than 90% molar of the carbon dioxide is in a liquid form;
- processing the multi-component feed stream and the carbon dioxide in a contacting column;
- withdrawing from the contacting column a bottom product stream containing at least a portion of the sulfurous material including at least hydrogen sulfide from the multi-component feed stream;
- and
- withdrawing from the contacting column an overhead vapor stream containing at least a portion of the one or more fuel gas components including at least one hydrocarbon.
Dependencies are inferred from the claim text.