ETHYLENEAMINES FOR REGENERATING ADSORBENT BEDS FOR SULFUR COMPOUND REMOVAL

    公开(公告)号:US20220023835A1

    公开(公告)日:2022-01-27

    申请号:US17244760

    申请日:2021-04-29

    摘要: A regeneration solvent comprised of one or more ethylene amines may contact an adsorbent bed that has been used to remove sulfur compounds from a hydrocarbon stream to extract adsorbed sulfur compounds from the adsorbent material in the bed to regenerate it. The one or more ethyleneamines may have structure (I), (II), or (III): where R1, R2, R5 and R6 are, to the extent chemically possible, independently H, C1-C4 linear or branched alkyl, amido (RRNC═O), or hydroxyalkyl, where each R in the amido group is independently H or C1 alkyl, where R3 and R4 are alkylene of from 1 to 4 carbon atoms, where x ranges from 0 to 3, y ranges from 1 to 6. The regenerated adsorbent bed may be reused, either alone or in combination with a liquid-liquid extraction column, to remove sulfur compounds from a hydrocarbon stream.