Download - Book 9
Before Recycle Of Ethane And Propane
Naphtha = 1000 Kg/hr
Steam Dilution Ratio = 0.6
Steam = 600 Kg/hr
Ethylene Propylene Ratio = 0.6
Overall Mass Balance On Furnace
481.1 Kg/hr
Ethylene Propylene Ratio
0.6
0.6
Solving equation A and B we get,
300.6875 Kg/hr
180.4125 Kg/hr
naphtha = H2 + CH4 + C2H4 + C3H6 + C4H6 + Gasoline + CO2 + Fuel oil + Residue + C2H6 + C3H8 + C3H4 + C4H8 + C2H2 + C4H10
1000 = 9.2 + 149.1 + m1 + m2 + 47.9 + 79.6 + 0.4 + 39 + 131.4 + 43.2 + 5.1 + 7.6 + 45.2 + 4.4 + 4.7
m1 + m2 =
m1 / m2 =
m1 = m2
m1 =
m2 =
PYROLYSISFURNACE
from furnace9.2 Kg/hr Gasoline =
149.1 Kg/hr300.6875 Kg/hr180.4125 Kg/hr
47.9 Kg/hrGasoline= 79.6 Kg/hr
0.4 Kg/hrFuel Oil = 39 Kg/hrResidue= 131.4 Kg/hr
43.2 Kg/hr Seperation Of Gasoline =5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr Fuel oil = 394.4 Kg/hr4.7 Kg/hr
Steam =
from primary fractionator water =9.2 Kg/hr
149.1 Kg/hr300.6875 Kg/hr180.4125 Kg/hr
47.9 Kg/hr
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
CO2 =
C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
PRIMARY
FRACTION
ATOR
WATER - Q
UEN
CHTO
WER
Gasoline = 14.328 Kg/hr0.4 Kg/hr
43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
Residue= 131.4 Kg/hrGasoline =
Residue = 131.4 Kg/hr
from quench towerSodium hydroxide=
9.2 Kg/hr149.1 Kg/hr
300.6875 Kg/hr Reaction180.4125 Kg/hr
47.9 Kg/hr0.4 Kg/hr
43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
sodium carbonate = 0.981818182water = 0.163636364
CO2 = C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
H2 =CH4 =
C2H4 = C3H6 = 2NaOH + CO2
C4H6 =
CO2 = C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
WATER - Q
UEN
CHTO
WER
ACID GAS REMO
VAL TO
WER
Hydrogen =
Methane =from dryer
9.2 Kg/hr149.1 Kg/hr
300.6875 Kg/hr180.4125 Kg/hr
47.9 Kg/hr43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr to de-ethanizer4.7 Kg/hr
to acetylene hydrogenator
from de-methanizer300.6875 Kg/hr180.4125 Kg/hr
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
C2H4 = C3H6 = C4H6 =
C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
C2H4 = C2H6 =C2H2 =
C2H4 = C3H6 =
DEMETHAN
IZERDE-ETHAN
IZER
47.9 Kg/hr43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr to de-propanizer
Assume 50% acetylene convert into ethyleneReaction
from de-ethanizer
300.6875 Kg/hr43.2 Kg/hr4.7 Kg/hr
ETHYLENE =
C4H6 =
C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
C3H6 = C4H6 =
C3H8 =C3H4 =C4H8 =
C4H10 =
2C2H2 + 3H2
C2H4 = C2H6 =C2H2 =
DE-ETHANIZER
ACETYLENE
HYDROGEN
ATOR
ETHYLENE
FRACTION
ATOR
from acetylene hydrogenator
45.55 Kg/hr303.0375 Kg/hr
to propadiene hydrogenation
from de-ethanizer
180.4125 Kg/hr47.9 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr
to de-butanizer
Assume 50% of propadiene converts into propylene
C2H6 =C2H4 =
C3H6 = C3H8 =C3H4 =
C3H6 = C4H6 =
C3H8 =C3H4 =C4H8 =
C4H10 =
C4H6 =
C4H8 =C4H10 =
ETHYLENE
FRACTION
ATOR
DE-PROPAN
IZERPRO
PADIENE
HYDROGEN
ATOR
Reaction
from de-propanizer
180.4125 Kg/hr5.1 Kg/hr7.6 Kg/hr
PROPYLENE =
from propylene fractionator
8.9 Kg/hr184.2125 Kg/hr
PROPANE =
2C3H4 + 3H2
C3H6 = C3H8 =C3H4 =
C3H8 =C3H6 =
PROPADIEN
EHYDRO
GENATO
RETHYLEN
EFRACTIO
NATO
R
Before Recycle Of Ethane And Propane
AssumptionProducts wt fraction
Cracked Naphtha Products 0.00929.2 Kg/hr 0.1491
149.1 Kg/hr 0.0479
Kg/hr Gasoline 0.0796
Kg/hr 0.043247.9 Kg/hr 0.0051
Gasoline= 79.6 Kg/hr 0.00760.4 Kg/hr 0.0452
Fuel Oil = 39 Kg/hr 0.0047Residue= 131.4 Kg/hr 0.0044
43.2 Kg/hr 0.00045.1 Kg/hr Fuel Oil 0.0397.6 Kg/hr Residue 0.1314
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
(A)
(B)
H2
H2 = CH4
CH4 = C4H6
C2H4 = m1
C3H6 = m2 C2H6
C4H6 = C3H8
C3H4
CO2 = C4H8
C2H2
C4H10
C2H6 = CO2
C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
+ Gasoline + CO2 + Fuel oil + Residue + C2H6 + C3H8 + C3H4 + C4H8 + C2H2 + C4H10
+ 47.9 + 79.6 + 0.4 + 39 + 131.4 + 43.2 + 5.1 + 7.6 + 45.2 + 4.4 + 4.7
to quench tower9.2 Kg/hr
149.1 Kg/hr300.6875 Kg/hr180.4125 Kg/hr
47.9 Kg/hrGasoline = 14.328 Kg/hr
65.272 Kg/hr 0.4 Kg/hr43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
Residue= 131.4 Kg/hr
Seperation Of Gasoline = 82 % = 0.82
Kg/hr
to acid removal tower
9.2 Kg/hr149.1 Kg/hr
1100 Kg/hr 300.6875 Kg/hr180.4125 Kg/hr
500 Kg/hr 47.9 Kg/hr0.4 Kg/hr
43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
CO2 = C2H6 =C3H8 =C3H4 =C4H8 =
C4H10 =C2H2 =
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
CO2 = C2H6 =C3H8 =C3H4 =C4H8 =
4.4 Kg/hr4.7 Kg/hr
Gasoline = 14.328 Kg/hr
to de-methanizer
9.2 Kg/hr149.1 Kg/hr
300.6875 Kg/hrSodium hydroxide= 0.727273 kg/hr 180.4125 Kg/hr
47.9 Kg/hr43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
C4H10 =C2H2 =
H2 =CH4 =
C2H4 = C3H6 = C4H6 =
C2H6 =C3H8 =
2NaOH + CO2 Na2CO3 + H2O C3H4 =C4H8 =
C4H10 =C2H2 =
Hydrogen = 9.2 Kg/hr
Methane = 149.1 Kg/hr
to de-ethanizer
300.6875 Kg/hr180.4125 Kg/hr
47.9 Kg/hr43.2 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr4.7 Kg/hr
to acetylene hydrogenator
300.6875 Kg/hr43.2 Kg/hr4.7 Kg/hr
to de-propanizer
180.4125 Kg/hr47.9 Kg/hr5.1 Kg/hr7.6 Kg/hr
45.2 Kg/hr4.4 Kg/hr
to ethylene fractionator
45.55 Kg/hr303.0375 Kg/hr
ETHYLENE = 303.0375 Kg/hr
2C2H2 + 3H2 C2H6 + C2H4
C2H6 =C2H4 =
Ethane = 45.55 Kg/hr
Recycle to feed stock
to propadiene hydrogenation
180.4125 Kg/hr5.1 Kg/hr7.6 Kg/hr
to de-butanizer
47.9 Kg/hr45.2 Kg/hr4.4 Kg/hr
to propylene fractionator
8.9 Kg/hr184.2125 Kg/hr
PROPYLENE = 184.2125 Kg/hr
PROPANE = 8.9 Kg/hr
2C3H4 + 3H2 C3H8 + C3H6
C3H8 =C3H6 =