Commodity Knowledge
Commodity Knowledge
Petroleum coke (often abbreviated Pet coke or petcoke) is a carbonaceous solid derived from oil refinery coker units or other cracking processes. Other coke has traditionally been derived from coal.

The range of Pet Coke is available in the following grades:
  • Raw Petroleum Coke mainly used as fuel by many industries
  • Green Petroleum Coke is used for further calcination to produce following products: calcined petroleum coke used in aluminum, graphite industries
  • CPC Breeze used in refractories and other specialty industries
Its high heat and low ash content make it a good fuel for power generation in coal fired boilers, but petroleum coke is high in sulfur and low in volatile content which pose some environmental and technical problems with its combustion. In order to meet current North American emissions standards some form of sulfur capture is required, a common choice of sulfur recovering unit for burning petroleum coke is the SNOX Flue gas desulphurisation technology[2][3], which is based on the well-known WSA Process. Fluidized bed combustion is commonly used to burn petroleum coke. Gasification is increasingly used with this feedstock (often using gasifiers placed in the refineries themselves).

Calcined petroleum coke (CPC) is the product from calcining petroleum coke. This coke is the product of the coker unit in a crude oil refinery. The calcined petroleum coke is used to make anodes for the aluminium, steel and titanium smelting industry. The green coke must have sufficiently low metals content in order to be used as anode material. Green coke with this low metals content is referred to as anode grade coke. The green coke with too high metals content will not be calcined and is used for burning. This green coke is called fuel grade coke.
  • Calcination Grade RPC is used for production of Anodes for the Aluminium Industry. Fuel Grade Petcoke is used primarily by Cement Plants.
 
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