Reformer Light Product Recovery Plant
Objective:
Prepare a design for the recovery of gasoline, butane and
propane products from a CCR
(Continuous Catalytic Reformer) and Naphtha Pretreater
system.
The aim should be to produce the most economic design i.e.:
achieve the highest DCF
(discounted cash flow). The DCF should be at least 20%.
Feed streams composition:
kgmoles/hr Recontacted Separator
Bottoms Light Ends Exit Pretreater
Hydrogen
Methane
Ethane
Propane
Iso-Butane
n-Butane
Iso-Pentane
n-Pentante
Iso-Hexane
n-Hexane
Methyl Cyclo C5
Cyclohexane
Benzene
Iso-Heptane
n-Heptane
C7 Cyclo C5
Toluene
Iso-Octane
n-Octane
C8 Aromatic
Iso-Nonane
n-Nonane
C9 Aromatic
C10 Aromatic
C11 Aromatic
H2S
13.6
1.7
97.4
201.4
58.2
116.4
149.5
143.6
144.7
58.9
7.5
0.0
295.0
16.9
4.2
2.1
504.8
3.7
1.9
364.4
0.2
0.1
179.4
49.1
8.6
0.0
5.5
2.0
46.3
137.9
39.8
174.5
80.5
39.3
0.01
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.5
Temperature (C)
Pressure (barg)
35
14.7
35
13.1
Product specifications:
1. CCR reformate: Reid Vapor Pressure @ 37.8 C 0.4 bara
2. Propane product:
Propane, mole% minimum 95%
Butane and heavier, mole% maximum 3%
Vapor Pressure, maximum @ 45C 17.6 barg
Sulpur, ppmw maximum - 50
H2S, ppmv maximum 0.5
Mercaptan Sulphur, ppmw maximum 50
Water, ppmw maximum 10
3. Butane product:
Vapor Pressure, maximum @ 37.8C 4.83 barg
Distillation, 95% recovered at 2C
Pentane and heavier, maximum - 15 mole%
Sulphur, ppmw maximum 50
Hydrogen Sulphide, ppmv maximum 0.5
Water, ppmw maximum 30
4. Pentane for gasoline blending:
Vapour pressure, maximum @ 45C 2.0 barg
