GAS CRACKING PLANT (OL)

Basis of Process Design
Gas Cracking Plant
This document represents the GAS CRACKING PLANT with an annual capacity of.

1.100.000 tons of polymer grade ethylene
And
200,000 tons of polymer grade propylene 

(GAS CRACKING PLANT (OL
C2 +-Feed
Component
Value
Unit
Ethane 52.97 % wt
Methane 0.3 % wt
Nitrogen Trace % wt
Propane 29.2
i-Butane 4.22 % wt
n-Butane 7.92
% wt
i-Pentane 1.71 % wt
n-Pentane 1.27 % wt
Hexan
0.43
% wt
CO2
1.97
% wt
COS
25
ppm wt
H2S 15 ppm wt

Ethylene Product
Component
Value
Unit
Ethylene 99.95% V min
Methane+Ethane 500 ppm V max
Hydrogen 5 ppm V min
Total C3 & Higher 10 ppm V min
Acetylene 1 ppm
V min
Carbon Monoxide 0.03 ppm V min
Carbon Dioxide 0.5 ppm V min
Oxygen
0.1 ppm
V min
Total combined sulphr
1 ppm
V min
Water
0.1 ppm
V min
Methanol 0.5 ppm V min
Total combined nitrogen 0.2 ppm V min
Oxygenated compounds 0.5 ppm V min
COS 0.02 ppm V min
Mercaptans 0.3 ppm V min

Propylene Product
Component
Value
Unit
Propylene 99.80% V min
Propane and heavier Balance V max
Methane 10 ppm V max
Ethane 200 ppm V max
Hydrogen 5 ppm
V max
Ethylene 5 ppm V max
Acetylene 1 ppm V max
C4HC
1 ppm
V max
Methyl acetylene
1 ppm
V max
Propadiene
1 ppm
V max
Carbon Monoxide 0.02 ppm V max
Carbon Dioxide 2 ppm V max
Oxygen 2 ppm V max
Total Sulphur 2 ppm V max
Water 5 ppm V max
Methanol+Ketones 5 ppm V max

Hydrogen Product
Component
Value
Unit
Hydrogen 99.99 % V min
CO+CO2 1 ppm V max
CH4+N2 0.01 % V max
C2H4 1 ppm V max

Methane Product
Component
Value
Unit
Hydrogen Max.7.0 Mol-%
Ethane Max.1000 Mol-ppm
Methane Min.93.0 Mol-%
CO Max. 1000 Mol-ppm
Acetylene Max.1 Mol-ppm
Sulfur Max.5 Mol-ppm
C3+ nil
Cl nil

C4 plus Product
Component
Value
Unit
M-Mercaptane 51 Wt-ppm
Ethane 131 Wt-ppm
Propane 18.0 Wt-%
i-Butane 17.82 Wt-%
n-Butane 41.72 Wt-%
Pentane 19.43 Wt-%
Hexane 0.03 Wt-%

C5 plus Product
Component
Value
Unit
C4 minus components Max 350 Wt-ppm
Benzene content 49.24 Wt-%
Toluene 14.68 Wt-%
Xylene 1.47 Wt-%
C5 6.02 Wt-%
C6-C8 nonAromatics 4.85 Wt-%
C7/C8Aromatics 4.13 Wt-%
C9+components 19.60 Wt-%
Diene No. 5-10 Wt-%

DPG(PYROLYSIS GASOLINE)
PROPERTY UNIT METHOD RESULT
DENSITY AT15.6 °C GR/CM3 D-4052
0.85-0.9
R.V.P PSIA D-323
3.0-6.0
COLOUR SAYBOLT --- D-156
dark brown
TOTALSULPHUR PPM D-3120
700 max
LEAD CONTENT PPB A.A.
nill
IBP °C D-86
45 min
5 PCT VOL RECOVERED °C D-86
55 min
95 PCT VOL RECOVERED °C D-86
260 max
FBP °C D-86
230 max
PARAFFINS WT% G.C
tbr
OLEFINS WT% G.C
max 15
NAPHTHENES WT% G.C
tbr
AROMATICS WT% G.C
60 min
OTHERS WT% G.C
20 max
BENZEN CONTENT WT% G.C
38 min
GUM CONTENT Mg/100MI D 381
1500 max
DOCTORTEST --------- ---------
negative
COPPER CORROSION --------- D 849
no 1a