Patent ID: 6838060

Claim:
An apparatus for production of gasoline with reduced sulphur content from a gasoline, comprising a fractionation column ( 1 ) having a gasoline inlet line ( 2 ) for introducing gasoline into said fractionation column, a first discharge line ( 3 ) for removing a first gasoline cut from an upper portion of said fractionation column, and a second discharge line ( 4 ) for removing a second gasoline cut from a lower portion of said fractionation column; a hydrotreatment zone ( 5 ) comprising a catalytic bed, a gasoline cut inlet line ( 6 ) for introducing said first gasoline cut, said gasoline cut inlet line ( 6 ) being in fluid communication with said first discharge line ( 3 ) of said fractionation column ( 1 ), said hydrotreatment zone ( 5 ) also comprising a hydrotreated effluent outlet line ( 8 ); a stripping zone ( 9 ) comprising a hydrotreated gasoline inlet in fluid communication with said hydrotreated effluent outlet line ( 8 ) of said hydrotreatment zone ( 5 ), an H 2 S outlet line ( 10 ), and a stripped gasoline outlet line ( 11 ); a sweetening zone ( 12 ) comprising a gasoline inlet in fluid communication with said stripped gasoline outlet line ( 11 ) and with an oxidizing agent supply line ( 14 ) for introducing oxidizing agent to said sweetening zone and a stripped and sweetened gasoline outlet line connected to said sweetening zone ( 12 ); and a selective diene hydrogenation zone located between said fractionation column ( 1 ) and said hydrotreatment zone ( 5 ), said selective diene hydrogenation zone comprising a gasoline inlet line in fluid communication with said first discharge line ( 3 ) for introducing a first gasoline cut, and a dedienized first gasoline cut outlet line in fluid communication with said gasoline cut inlet line ( 6 ); wherein said apparatus does not comprise a treatment zone ( 7 ) in fluid communication with said first discharge line ( 3 ) and said hydrotreatment zone ( 5 ).