MULTI-STAGE HYDRODESULFURIZATION OF CRACKED NAPHTHA STREAMS WITH INTERSTAGE FRACTIONATION
摘要
A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically bound sulfur and olefins. The olefinic naphtha stream is selectively hydrodesulfurized in a first sulfur removal stage and resulting product stream, which contains hydrogen sulfide and organosulfur is fractionated at a temperature to produce a light fraction containing less than about 100 wppm organically bound sulfur and a heavy fraction containing greater than about 100 wppm organically bound sulfur. The light fraction is stripped of at least a portion of its hydrogen sulfide and can be collected or passed to gasoline blending. The heavy fraction is passed to a second sulfur removal stage wherein at least a portion of any remaining organically bound sulfur is removed.
申请公布号
CA2467879(C)
申请公布日期
2012.10.30
申请号
CA20022467879
申请日期
2002.11.08
申请人
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
发明人
COKER, JOHN CALVIN;BRIGNAC, GARLAND BARRY;HALBERT, THOMAS R.;MATRAGRANO, JOHN G.;GUPTA, BRIJENDA N.;WELCH, ROBERT CHARLES WILLIAM;WINTER, WILLIAM EDWARD JR.