The project included installing two hydrodesulfurization (HDS) units for the cracked naphtha produced by two catalytic cracking units, a coker naphtha hydrotreating (HDT) unit, and a catalytic reforming unit.
Two major factors are behind the modernization of Brazil’s refineries: 1) the rising demand for domestic refined products, and 2) the introduction of more stringent diesel and gasoline specifications. Diesel sold on the domestic market already has a maximum sulfur content of 10 ppm; the sulfur limit is 50 ppm for gasoline.
One of the refineries selected by Petrobras for modernization was the Paulínia refinery (Replan), the largest refinery in Brazil, sited in the town of Paulínia in the state of São Paulo. New processing units were incorporated into the Replan refinery to satisfy the stringent diesel and gasoline specifications. The project included installing two hydr
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