Method of removing gaseous sulfides from gaseous mixtures
Abstract
Abstract THE PROCESS FOR SELECTIVELY REMOVING H2S AND LIKE SULFIDES FROM FLUIDS CONTAINING THEM BY C ONTACT WITH A SUBSTITUTED AROMATIC NITRILE HAVING AN ELECTRON-ATTRACTING SUBSTITUENT ON THE AROMATIC RING AT LEAST AS STRONG AS HALOGEN (E.G., ISOPHTHALONITRILE) AND AN ALKALI HYDROSULFIDE IN A SUBSTANTIALLY HYDROXYL-FREE SOLVENT SUCH AS N-METHYL-2PYRROLIDONE. PREFERABLY, IN THE PROCESS AN ADMIXTURE OF H2S AND CO2 IN NATURAL GAS IS CONTACTED WITH T HE SUBSTITUTED AROMATIC NITRILE CONTAINING C ONTACTING SOLUTION TO REACT THE H2S WITH SAID NITRILE, T HE CO2 AND/OR LIKE HYDROCARBONS ARE REJECTED FROM THE CONTACTING SOLUTION BY MILD HEATING AND/OR PRESSURE REDUCTION AND THEREAFTER H2S IS REGENERATED BY HEATING THE REMAINING SOLUTION.
Inventors
- 👤 G Tjoa
- 👤 K Kilgren
Bibliographic Details
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