a.- Hydrotreating
Feed and hydrogen rich gas are mixed and heated to reactor temperature
by heat recovery and process heater. A catalytic fixed-bed reactor is
used for desulphurization, denitrogenation and olefines saturation.
The reactor effluent is cooled and separated:
the hydrogen rich gas is recyled to the reaction section and treated
gasoline is fed to a stabilizer column to remove light ends. The stabilized
gasoline is further fractionated into a light gasoline stream, adequate
for C-C isomerization feed, and a heavy gasoline fraction which is fed
to a catalytic reforming unit.
b.- Catalytic
Reforming
Preheated feedstock is mixed with hydrogen-rich gas and is fed to a
reaction section consisting of three reactors in series with inter-heaters
supplying the heat duty of the endothermic reaction. The reactor effluent
is cooled and separated. The hydrogen produced by the reaction is separated
and used in other hydrotreating units. The reformate gasoline is stabilized
and pumped to storage tank.