Patent ID: 8088705

Claim:
An off-site sulfurization process comprising: incorporating sulfur in the porosity of solid particles of a catalyst or an adsorbent containing at least one of the metals cobalt, molybdenum, nickel, tungsten or copper, silver or gold, wherein said process is carried out in the presence of a reaction gas comprising a hydrogen sulfide gas diluted or not in hydrogen or nitrogen, wherein said solid particles are made to rise or fall in a sulfurization zone in a vertically disposed vibrating helical coil, said coil having a bottom end and a top end and a multiplicity of longitudinally spaced apart lateral orifices, said sulfurization being conducted solely by gas-solid contact comprising passing said solid particles of catalyst or adsorbent into the top or bottom end of the vibrating coil and passing said reaction gas into said multiplicity of spaced apart lateral orifices, wherein the temperature at the coil and flowrate of the reaction gas through said lateral orifices and said vertically disposed vibrating helical coil is continually monitored and the flowrate of said reaction gas and catalyst or absorbents is continually adjusted as needed to establish a temperature profile between 20° C. and 250° C. that is solely controlled by the exothermal heat generated from a reaction between said reaction gas and said catalyst or adsorbents, and wherein the temperature is lower than that required to provide stoichiometric sulfided particles and wherein no turns of the coil are heated by Joule effect.