Heterogeneous catalyst for hydrocarbon sweetening
AssigneeKing Fahd University of Petroleum and Minerals
InventorsSagheer A. Onaizi, Reyad Shawabkeh, Zuhair Omar Malaibari, Nabeel Salim Abu-Ghander
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Abstract
A two or particularly three-phase process, and corresponding apparatus, desulfurizes sour hydrocarbon gas, e.g., natural gas, generally better than known, using a fixed-bed, two-phase processes in terms of the amount of H2S scavenged and the breakthrough time of H2S. The three-phase process is effective in scavenging H2S at ambient temperature and pressure, using a copper salt catalyst impregnated on alumina or other generally inert support, which is regenerable.
Claims7
A heterogeneous desulfurization catalyst for hydrocarbon sweetening, comprising:
- a solid catalyst comprising:
- a support comprising Al2O3 in an amount of at least 95 wt. %, based upon total support weight, the support being inert to desulfurization at ambient conditions;
- copper (II) ions upon and impregnated within the support in an amount of at least 95 wt. %, based upon total catalytically active metals in the catalyst at the ambient conditions, and
- a liquid comprising at least 75 wt. % H2O, based upon total solvent weight, wherein the Al2O3 is α-Al2O3,
- wherein the copper salt is selected from the group consisting of Cu(NO3)2, CuCl2 and Cu(CO3) and mixtures thereof,
- wherein the solid catalyst comprises less than 1 wt. % CuO and less than 1 wt. % Fe, based upon the total active metal content in the solid catalyst,
- wherein the solid catalyst comprises the copper (II) salt in an amount of from 16 to 17 wt. %, based on a total weight of the solid catalyst, and
- wherein the solid catalyst comprises no activated carbon.
Dependencies are inferred from the claim text.