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 =