Device, process, and catalyst intended for desulfurization/demercaptanization/dehydration of gaseous hydrocarbons

A process of desulfurization and/or demercaptanization and/or dehydration of gaseous hydrocarbons, comprising:

• mixing one or more gaseous hydrocarbons comprising an initial amount of hydrogen sulfide, mercaptans, and water, to be purified with an oxygen-containing gas,
• pressurizing and passing through a reactor loaded with a solution of a catalyst for oxidating the hydrogen sulfide and mercaptans in an absorbent that also provides for dehydration of said gaseous hydrocarbons,
• maintaining a gas pressure, as determined by a desired content of water in purified gas thereby simultaneously dehydrating the gaseous hydrocarbons,
• wherein the catalyst comprises mixed-ligand complexes of transition metals,
• wherein the catalyst comprises an amine, dimethylformamide (DMF), and CuCl2*2H2O, and
• producing an end product having a residual mercaptan concentration of 10 ppm or less and a residual hydrogen sulfide concentration of 10 ppm or less.