Patent ID: 6592750
Filing Date: 2003-07-15
Classification: C10G

Abstract:
A process for the hydrodesulfurization of a cracked naphtha stream comprising the steps of:(a) feeding fresh hydrogen and a naphtha stream containing organic sulfur compounds and olefins to a first reaction zone containing a suitable hydrodesulfurization catalyst at conditions suitable for reacting a portion of the organic sulfur compounds with the hydrogen to produce H2S; (b) feeding the effluent from said first reaction zone to a stripping zone wherein a portion of said H2S is removed to produce a first H2S reduced stream; (c) feeding said first H2S reduced stream and fresh hydrogen to a second reaction zone containing a suitable hydrodesulfurization catalyst at conditions suitable for reacting a portion of the remaining organic sulfur compounds with the hydrogen to produce H2S; and (d) feeding the effluent from said second reaction zone to the stripping zone of step (b) wherein a portion of said H2S is removed to produce a second H2S reduced stream having a further reduced organic sulfur content than said naphtha stream and said first H2S reduced stream.