Schlumberger has been granted a patent for an acid gas purification system involving a primary membrane system, compression stages, and a cryogenic separation system. The system efficiently separates CO2 and H2S from hydrocarbons using a unique frozen CO2 fractionator. GlobalData’s report on Schlumberger gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Acid gas purification system using membrane and cryogenic separation
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A recently granted patent (Publication Number: US11883778B2) discloses an acid gas purification system that includes a primary membrane system, a first compressor, and a cryogenic separation system. The cryogenic separation system comprises a frozen CO2 fractionator with specific sections for processing CO2 and H2S, producing a CO2 and H2S liquid stream and a hydrocarbon gas stream. The hydrocarbon gas stream is then compressed in a second compressor and blended with the hydrocarbon stream effluent of the primary membrane system. Additionally, the system includes provisions for recycling streams to optimize the purification process, such as recycling a portion of the bottoms stream to the first compressor.
Furthermore, the patent describes an alternative acid gas purification system that utilizes a membrane separation unit, a conditioner, and a cryogenic fractionator to separate acid gases from a feed stream. The cryogenic fractionator, similar to the previous system, is a frozen CO2 fractionator with specific sections for processing acid gases. The system produces an overhead stream that is compressed and blended with the retentate stream, with options for recycling streams to enhance efficiency. The membrane separation unit is specified to be a polymer membrane unit, and the system is designed to achieve high purity levels of CO2 and/or H2S in the permeate stream. Overall, the patent outlines innovative methods for acid gas purification using membrane and cryogenic technologies, with a focus on optimizing the purification process through recycling and integration of streams.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
