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US 2014/0190350 A1Published application
Method and device for obtaining gas products
AssigneeLinde Aktiengesellschaft
InventorsHorst Weiss, Alexander Brandl
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AssigneeLinde Aktiengesellschaft
InventorsHorst Weiss, Alexander Brandl
Estimating the term…
The invention relates to a method and to a device for physical gas scrubbing, wherein a feed gas (1) containing hydrogen, carbon monoxide, carbon dioxide and also carbonyl sulphide and/or hydrogen sulphide is conducted through a first scrubbing section (W1) in countercurrent to a scrubbing medium preloaded with carbon dioxide, in order to separate sulphur components substantially selectively off from the feed gas and to generate a desulphurized gas mixture (3). In a second scrubbing section, carbon dioxide is separated off from only a subquantity of the desulphurized gas mixture by scrubbing with an unloaded scrubbing medium (4) and the resultant carbon dioxide-preloaded scrubbing medium is used completely in the first scrubbing section (W1) as scrubbing medium.
A method for physical gas scrubbing, wherein a feed gas containing hydrogen, carbon monoxide, carbon dioxide and also carbon oxide sulfide and/or hydrogen sulfide is directed through a first scrubbing section in counterflow to a scrubbing medium which is preladen with carbon dioxide in order to generally selectively separate sulfur components from the feed gas and to produce a desulfurized gas mixture, characterized in that carbon dioxide is separated from only a partial quantity of the desulfurized gas mixture in a second scrubbing section by scrubbing with an unladen scrubbing medium and the scrubbing medium, preladen with carbon dioxide, which is obtained in the process is used completely in the first scrubbing section as scrubbing medium.
A device for separating sulfur components and carbon dioxide from a feed gas containing hydrogen, carbon dioxide and also sulfur components by means of physical gas scrubbing, having an absorption column, in which a first scrubbing section is arranged beneath a second scrubbing section, wherein the absorption column in its lower region has a gas supply for feeding the feed gas and at its head has a stripping device for the stripping of a gas mixture which is cleaned of sulfur components and carbon dioxide, and also a scrubbing-medium supply for feeding an unladen scrubbing medium into the second scrubbing section, characterized in that a side-disposed gas stripping line is arranged between the first scrubbing section and the second scrubbing section, via which a gas mixture, which has been desulfurized in the first scrubbing section, can be stripped.
Dependencies are inferred from the claim text.