Patent ID: 7052598

Claim:
A process for the production of gasoline with a low sulfur content, comprising at least (a) at least one selective hydrogenation of diolefins that are present in starting gasoline (b), at least one transformation of light sulfur-containing compounds that are present in the starting gasoline,(c), at least one fractionation of gasoline that is obtained in (a) or (b) into at least two fractions: a light fraction and a heavy fraction, (d) at least one transformation of sulfur-containing compounds that are selected from the group consisting of thiophene, thiophenic compounds and mercaptans that are present in the light fraction and/or in at least one intermediate fraction, wherein the effluent of (d) is (i) mixed at least in part with a heavy fraction that is obtained from the fractionation in (c); (ii) sent into a new fractionation unit to be separated into two fractions: an intermediate fraction that is not treated or optionally desulfurized without being mixed, and a heavy fraction that is optionally mixed with the heavy fraction that is obtained from (c) before being desulfurized in stage (f); or (iii) returned to fractionation (c); (e) optionally desulfurizing at least a portion at least one intermediate fraction obtained from (c) or (d), (f), a one stage desulfurization treatment of at least a portion of the heavy fraction that is obtained from fractionation in (c) stage c.