Petroleum coke is a carbonaceous product obtained in the oil refining process. It is abbreviated as Coke or Petcoke, and is a carbon-rich solid material derived from final cracking process — a thermo-based chemical engineering process that splits long chain hydrocarbons of petroleum into shorter chains— that takes place in coker units. There are two distinctive grades of Petroleum Coke viz. Calcinable or Green Petcoke and Fuel Grade Petcoke..
Calcinable grade coke or Green Petcoke, also referred as RPC is produced at Koyali, Barauni, Bongaigaon, Digboi and Guwahati refineries of IndianOil.
Fuel Grade Petcoke is produced at Panipat, Paradip, Koyali and Haldia refineries of IndianOil.
|Application as||End use|
|Feed Stock/ Fuel Use||Cement
|Carbon Source||Electrodes for electrometallurgical industries
Benefits of Fuel grade Petcoke over coal:
- Petcoke is a direct replacement of coal as a fuel but has higher calorific value (>7800Kcal/Kg as compared to 3500-4500 Kcal/Kg for coal).
- Petcoke is hydrophobic as compared to coal which is hydrophilic, thereby having edge during rainy season.
- Being solid fuel, Petcoke has low volatile matter thus no evaporation losses. Helps saving in transportation cost due to higher density compared to liquid fuels.
- Low ash content.
RPC and Fuel grade Petcoke are sold ex refineries on ex MI basis by Rail (select refineries) and Road mode. The facility of Rail loading is available at Paradip, Koyali and Haldia refineries.
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