Staged hydrotreating method for naphtha desulfurization

Details Staged hydrotreating method for naphtha desulfurization Staged hydrotreating method for naphtha desulfurization

C - Chemistry, Metallurgy

10

G

C10G 65/14 (2006.01) C10G 45/00 (2006.01) C10G 45/08 (2006.01) C10G 65/16 (2006.01)

Patent

CA 2403999

The invention relates to a method and dual reactor system for hydrotreating a wide cut cat naphtha stream comprising heavy cat naphtha (HCN) and intermediate cat naphtha (ICN). Accordingly, a HCN fraction is hydrotreated under non-selective hydrotreating conditions and an ICN fraction is hydrotreated under selective hydrotreating conditions. The hydrotreated HCN and ICN effluents may be conducted to heat exchangers to pre-heat the ICN feed, obviating the need for a furnace.

L'invention concerne un procédé et un système à double réacteur destinés à l'hydrotraitement d'un flux de naphta catalytique de large coupe comprenant du naphta catalytique lourd (HCN) et du naphta catalytique intermédiaire (ICN). Par conséquent, une fraction HCN est hydrotraitée dans des conditions d'hydrotraitement non sélectives et une fraction ICN est hydrotraitée dans des conditions d'hydrotraitement sélectives. On peut amener les effluents de HCN et de ICN hydrotraités à des échangeurs thermiques afin de préchauffer la charge de ICN, rendant ainsi superflu l'utilisation d'un four.

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