| 简介 |
Capturing sulfur impurities e.g. carbonyl sulfide and/or carbon sulfide, present in gas feeds containing hydrogen gas and/or carbon monoxide, comprises : desulfurizing the feed by contacting it with a retaining material containing an active phase at a temperature of 20-450[deg] C; optionally inerting the sulfurized retaining material; oxidatively regenerating the retaining material; optionally inerting the regenerated retaining material; and desulfurizing the feed by contacting it with the retaining material that has been regenerated and rendered inert at a temperature of 20-450?C. Capturing sulfur impurities comprising hydrogen sulfide, carbonyl sulfide and/or carbon sulfide, present in gas feeds containing hydrogen gas and/or carbon monoxide, comprises : desulfurizing the feed by contacting it with a retaining material containing an active phase comprising at least one metal oxide-I of group VIIb, VIIIb, Ib or IIb, and at least one metal oxide-II comprising chromium, molybdenum, tungsten or rare earths comprising praseodymium, neodymium or cerium, at a temperature of 20-450[deg] C, where the molar ratio of the metal oxide-I and metal oxide-II is 0.6 : 20; optionally inerting the sulfurized retaining material; oxidatively regenerating the retaining material; optionally inerting the regenerated retaining material; and desulfurizing the feed by contacting it with the retaining material that has been regenerated and rendered inert, at a temperature of 20-450?C, where the retaining material has been regenerated at a temperature of 20-600[deg] C, preferably 300-480[deg] C. An independent claim is included for the material for capturing sulfur impurities, containing an active phase comprising a metal oxide compound of formula (A1 xB1 yO z) and (A1 tO u). A1 : VIIb, VIIIb, IB or IIb group metal; B1 : Cr, Mo, W or rare earth metal comprising Pr, Nd or Ce; and (x+t) : y : 0.6 : 20. N.B. z and u are not defined. |
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