The duty specification for the heater can now be developed with the coil profile
and other data to meet the required conversion. The final material composition can
also be used now to develop the syncrude composition for the design of the
recovery side which will probably consist of a main fractionator with possibly a
vacuum distillation unit for the cracked residue. The main fractionator usually
produces a “wild” full-range naphtha which is routed to the naphtha product stream
leaving the atmospheric crude unit. A full-range gas oil would be blended with the
straight-run atmospheric light gas oil to be hydrotreated and routed to the
diesel pool.
1.0
3.0
5.0
KT/K800 °F Ratio
7.0
Coil Outlet
920
800
Shaded Area =
= 3867
KT/KT800. Coil Volume
9.0
1400
1200
Coil Volume Cu ft
1000
8000
600
11.0
Fig. 20 Coil volume above 800
F versus the K T /K 800
F ratio
564
D.S.J. Jones
and other data to meet the required conversion. The final material composition can
also be used now to develop the syncrude composition for the design of the
recovery side which will probably consist of a main fractionator with possibly a
vacuum distillation unit for the cracked residue. The main fractionator usually
produces a “wild” full-range naphtha which is routed to the naphtha product stream
leaving the atmospheric crude unit. A full-range gas oil would be blended with the
straight-run atmospheric light gas oil to be hydrotreated and routed to the
diesel pool.
1.0
3.0
5.0
KT/K800 °F Ratio
7.0
Coil Outlet
920
800
Shaded Area =
= 3867
KT/KT800. Coil Volume
9.0
1400
1200
Coil Volume Cu ft
1000
8000
600
11.0
Fig. 20 Coil volume above 800
F versus the K T /K 800
F ratio
564
D.S.J. Jones