| 摘要 |
The invention relates to a method for removing sour gases from raw gases (1). The removed sour gases are intended to accumulate at a high regeneration pressure. This enables the sour gases to be transported to a storage area with a minimum effort for compression. The raw gas (1) is fed into an absorption column (40) and there purified of the sour gas components present in the raw gas (1), under increased operational pressure, by means of a physical absorption agent (16). The absorption agent (5) charged with sour gases and useful gases is then fed into a high-pressure stripping column (43), in which a portion of the absorption agent is vaporized, and a stripping vapor is thereby generated. The coabsorbed useful gases are driven out by the stripping vapor. The useful gases are drawn off at the head of the high-pressure stripping column (43). The absorption agent present in the head vapors of the high-pressure stripping column (43) is liquefied and fed back into the high-pressure stripping column (43). The flow of absorption agent (7) departing the base of the high-pressure stripping column (43) is fed into a high-pressure regeneration column (47), in which the sour gases present in the absorption agent are separated out and drawn off from the head of the high-pressure regeneration column (47) at high pressure. The regenerated absorption agent (10) is drawn off at the base of the high-pressure regeneration column (47) and fed back into the absorption column (40).
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