PET COKE

Petcoke can be a good replacement of coal/lignite.

It can be used in blend form along with coal/lignite or 100% in AFBC/CFBC boilers.

Ash content in Petcoke is much lower than coal/lignite. Hence particulate emissions are always lower as compared to coal.

In a petroleum refinery, vacuum distillation and atmospheric processes eliminate components from the crude the oil that boil over 500oC. The distillation process segregates the lighter part of the crude oil into various fractions which are processed further into useful refined products such as petrol, kerosene, LPG, diesel, etc. That part of the crude oil which resists boiling during the distillation process even under vacuum is called as the vacuum reside. The vacuum residue comprises of heavy, viscous and complex hydrocarbon molecules.Cocking is basically a thermal cracking process categorized by long residence time as well as the production of petroleum coke (Petcoke), which is a heavy carbon residue. Petcoke is developed by thermal cracking of vacuum residue, produced from crude oil.

Petcoke yield is primarily dependent on the carbon content of feedstock, whereas the structural quality of the Petcoke is influenced chiefly by the type of feed, either virgin crude or cracked products. Fuel grade Petcoke is obtained from vacuum residues that have high sulfur contents. High sulphur Petcoke is utilized as a fuel while low sulphur Petocoke is used in producing anodes. Fuel grade Petcoke often replaces iignite and coal.