The Olefins Plant uses the technology licensed by Kellogg Brown & Root (KBR) of USA. The plant has six SCORE furnaces of millisecond technology, of which five are usually operated and the sixth is used for de-coking or as standby. The feed stock Natural Gas Liquid (NGL) is fed into the fractionators where C5+ hydrocarbons are recovered at the bottom and C2 to C4 fractions are fed to the cracker furnaces along with recycle gases – ethane, propane and butane. Ethylene and Propylene are the main products of Olefins plant, while pentane, hydrogen and fuel gas are the by-products.

 

Capacity: 300,000 KTA of Ethylene and 130,000 KTA of Propylene

 

A battery of 9 Distillation Columns separate the cracked gas in its main components: Methane, Ethane, Ethylene, Propylene, Propane, Butane and Cracked C5+

Ethylene and Propylene are main products while ethane, propane and butane are recycled to furnaces. Methane is used as fuel gas in furnaces.

 

1-C-4 Demethaniser

1-C-5 Deethaniser

1-C-6 C2 splitter

1-C-7 Depropaniser

1-C-8A/B C3 splitter (2)

1-C-9 Debutanizer

1-C-90 C5+ stabilizer

1-C-91 C5+ fractionator

 

Feed:   NGL (Natural Gas Liquids)   from Agip

PRF (Propylene Rich Feed) from PHRC

 

Other by-products:

 

120 KT/Y of V/C C5+

Fuel gas

Hydrogen

Light/Heavy Oil